Sensor Therm METIS M311 User manual

Pyrometers
METIS M311 / M322
METIS H311 / H322
With 17-pin connector and PID controller
User Manual

METIS M311 / M322 / H311 / H322 (17-pin)
Content
2
Content
1General...............................................................................................................................................4
1.1 Information to this Manual.........................................................................................................4
1.2 CE Conformity and Standards..................................................................................................4
1.3 Limitation of Liability..................................................................................................................4
1.3.1 PID controller.......................................................................................................................4
1.4 Terms of Warranty ....................................................................................................................4
1.5 Copyright...................................................................................................................................5
1.6 Customer Service / Spare Parts ...............................................................................................5
1.7 Disposal ....................................................................................................................................5
2Safety..................................................................................................................................................5
2.1 Use of the Manual.....................................................................................................................5
2.2 Supplementary Information about the Operation......................................................................5
2.3 Responsibility of the Operator...................................................................................................5
2.4 Warning Notes ..........................................................................................................................5
2.5 Electrical Connection ................................................................................................................6
2.6 Laser Targeting Light................................................................................................................6
2.7 Through-lens Sighting / View Finder.........................................................................................6
2.8 Device Labels............................................................................................................................6
3Overview ............................................................................................................................................7
3.1 Intended Use.............................................................................................................................7
3.2 Scope of Delivery......................................................................................................................7
3.3 Model Designs ..........................................................................................................................7
3.4 Identification Label....................................................................................................................7
4Electrical Connection........................................................................................................................8
4.1 Cable Colors and Pin Assignment............................................................................................8
4.1.1 Power Supply.......................................................................................................................8
4.1.1.1 Factory Settings..............................................................................................................9
4.1.2 Analog Output 1 and 2.......................................................................................................10
4.1.3 Digital Inputs / Outputs and Analog Input..........................................................................10
4.1.4 Serial Interface RS232 / RS485 (M3: switchable RS232 / RS485; H3: only RS485)........11
4.1.4.1 Interface Converter (Accessory)...................................................................................12
4.1.5 Shielding ............................................................................................................................12
4.1.6 Camera Module .................................................................................................................12
5Mechanical Installation...................................................................................................................13
5.1 Mounting .................................................................................................................................13
5.2 Mounting Optical Fiber / Optics (optical fiber devices) ...........................................................13
5.2.1 Bending Radius Optical Fiber............................................................................................13
5.2.2 Winding and Unwinding the Optical Fiber .........................................................................13
5.2.3 Mounting of Optical Fiber...................................................................................................14
5.2.4 Connect the Optics ............................................................................................................14
5.3 Ambient Temperature.............................................................................................................15
5.4 Ratio Technology / Alignment onto the Measuring Object .....................................................15
5.4.1 Alignment with the Laser Targeting Light ..........................................................................16
5.4.2 Alignment with the Through Lens Sighting / View Finder..................................................16
5.4.3 Alignment with the Camera Module...................................................................................17
5.5 Setting the Measuring / Focus Distance.................................................................................17
5.5.1 Manually Focusable Optics................................................................................................17
5.5.2 Motorized Focus Optics (only M3).....................................................................................17
5.5.3 Manually Focusable Fiber Optic Lenses............................................................................18
5.6 Spot Size Tables.....................................................................................................................18
5.6.1 Manually Adjusted or Motorized Focus Optics ..................................................................18
5.6.2 Focusable Fiber-Optic Lenses...........................................................................................19

METIS M311 / M322 / H311 / H322 (17-pin)
Content
3
5.6.3 Calculation of the Spot Size Diameter outside the Focused Distance..............................19
6Pyrometer Parameters / Settings ..................................................................................................20
6.1 Emissivity Slope......................................................................................................................20
6.2 Emissivity ε (when used in single-channel mode)..................................................................20
6.3 Transmittance.........................................................................................................................21
6.4 Spot Size Fill Factor................................................................................................................21
6.5 Switch-off Level.......................................................................................................................21
6.5.1 Switch-off Verification ........................................................................................................22
6.5.2 Dirty Window Alarm ...........................................................................................................22
6.6 Response Time t90 ..................................................................................................................22
6.6.1 Dynamic Adaptation at Low Signal Levels (only M3) ........................................................22
6.7 Maximum Value Storage (Peak Picker) / Clear Time tCL ........................................................22
6.8 Temperature Sub Range ........................................................................................................23
6.9 Customize Analog Output.......................................................................................................23
6.10 Analog Output.........................................................................................................................23
6.10.1 Test Current.......................................................................................................................23
6.10.2 Upscale-Burnout................................................................................................................23
6.11 Interface Type (only M3).........................................................................................................24
6.12 Baud Rate...............................................................................................................................24
6.13 Temperature Unit....................................................................................................................24
6.14 Address...................................................................................................................................24
6.15 Interface Delay / Answer Delay ..............................................................................................24
7SensorTools Software ....................................................................................................................25
7.1 Program Start / Connecting the Pyrometer ............................................................................25
7.2 Software Window....................................................................................................................27
7.2.1 Main Window Graphs....................................................................................................27
7.2.2 Control Window .................................................................................................................30
7.2.3 Device Settings and Configuration ....................................................................................32
7.2.3.1 Digital Input / Output Configuration..............................................................................33
7.2.3.2 Service functions..........................................................................................................35
7.2.3.3 Interface........................................................................................................................35
7.2.3.4 Data Collection (Buffer Mode)......................................................................................36
7.2.3.5 Single-Point Adjustment...............................................................................................37
7.2.4 PID Controller ....................................................................................................................39
7.2.5 Setups................................................................................................................................41
7.3 Data Playback.........................................................................................................................42
7.4 Communication / Options .......................................................................................................43
7.5 Spot Size Calculator ...............................................................................................................43
8SensorFlash Software (Update Firmware)....................................................................................44
9Technical Data.................................................................................................................................45
9.1 Storage ...................................................................................................................................46
9.2 Dimensions .............................................................................................................................47
9.3 Composition of the Type Number...........................................................................................48
9.4 Accessories.............................................................................................................................49
10 Maintenance.....................................................................................................................................50
10.1 Cleaning..................................................................................................................................50
10.2 Pyrometer Calibration.............................................................................................................50
10.3 Trouble-Shooting ....................................................................................................................50
11 Communication via Serial Interface / Interface Commands .......................................................51
Index.........................................................................................................................................................56

METIS M311 / M322 / H311 / H322 (17-pin)
General
4
1 General
1.1 Information to this Manual
This manual enables the safe and efficient use with the device. The manual is part of the instrument and
has to be kept in a location where users always have access to.
Read this manual carefully before operating. For secure working all security notes and operation proce-
dures in this manual has to be followed.
Additionally the local accident prevention regulations and common safety regulations of the instruments’
operational area are valid.
The descriptions may differ from the current delivery status, since the pyrometer is continuously devel-
oped. Illustrations in this manual are for basic understanding and can differ from the actual construction.
1.2 CE Conformity and Standards
The product conforms to the following standards:
CE conformity: DIN EN 61326-1 (electromagnetic compatibility)
Laser safety: IEC 60825-1, laser class 2 (only devices equipped with laser targeting light)
RoHS: 2011/65/EU
1.3 Limitation of Liability
All information and notes in this manual are made under consideration of valid standards and rules,
state of technology and our expert knowledge for many years.
The producer assumes no liability for damages due to:
Non-observance of this manual
Usage out of intended use
Assignment of unskilled personnel
Unauthorized modifications
Technical modifications
Usage of spare parts not approved
The responsibilities of the delivery contract are valid as well as our general terms and conditions and
terms of delivery and the valid statutory rule at date of the conclusion of contract.
1.3.1 PID controller
The PID controller has been designed to control temperatures in a variety of applications, especially for
controlling fast processes. The temperature control accuracy depends on the appropriate choice of con-
trol parameters and on the process itself. Sensortherm excludes process responsibility.
1.4 Terms of Warranty
A warranty period is 24 months from date of shipment form the Sensortherm facility. The seller will re-
pair or replace the device at its own discretion. Further claims of the buyer against the seller or its
agents are excluded, especially claims for damages that are not incurred in the delivery itself. This shall
not apply in cases of intent, gross negligence, or the absence of assured properties. Damage or misuse
of the product will be determined and void the warranty coverage. Repairs paid by the customer will in-
clude a 180 days warranty from date of shipment. Transportation costs are to be paid by the customer.
Any claims for damage caused by misuse, neglect or tampering with the sensor are excluded.
Sensortherm does not guarantee that the software is free of errors or programming errors.

METIS M311 / M322 / H311 / H322 (17-pin)
Safety
5
1.5 Copyright
This manual is protected by copyrights and are intended solely for internal purposes.
It is not permitted to transfer these instructions to third parties, duplication in any kind and form - includ-
ing excerpts - as well as recovery and / or notification of contents without written permission of the man-
ufacturer, except are internal purposes.
Contraventions are liable for damages. All other rights reserved.
1.6 Customer Service / Spare Parts
For technical information contact our customer service.
It is recommended to purchase spare parts and accessories direct from Sensortherm (manufacturer).
In addition, our employees are always interested in new information and experiences arising from the
application and can be valuable for improvement of our products.
1.7 Disposal
Dispose of the product properly when it is no longer usable: pyrometers include electrical and electronic
waste and have to be recycled or disposed environmentally friendly or to send to the manufacturer for
disposal.
2 Safety
2.1 Use of the Manual
Any person who is going to work with the device must have read and understood the operating man-
ual before beginning.
Operation and maintenance of the system is only to be performed by trained personnel.
This manual is to be kept and handed over when passed on.
2.2 Supplementary Information about the Operation
The following symbol is used to simplify the search for useful information:
NOTE: This combination of symbol and signal word indicates a potentially hazardous situation
that can lead to property and environmental damage if not avoided.
INFO: This symbol indicates useful tips, recommendations and information for efficient and
trou-ble free operation.
2.3 Responsibility of the Operator
If the device is used in the commercial sector the operator is subject to the legal responsibilities for
workplace safety.
In addition to the safety instructions in this manual follow the regulations of safety, accident prevention
and environmental protection. If the device is integrated into a system, the safety of the system in which
the device is integrated is in the responsibility of the installer of the system.
2.4 Warning Notes
The following symbols are used in this manual and may be stick on the device as a mark for infor-
mation, restrictions, preventive measures and safety instructions. This information indicates risks and
how they can be avoided.

METIS M311 / M322 / H311 / H322 (17-pin)
Safety
6
Please pay attention to this symbols for safety reasons.
WARNING: This combination of symbol and signal word indicates a potentially dangerous
situation that can lead to death or serious injury if not avoided.
CAUTION: This combination of symbol and signal word indicates a potentially dangerous
situation that can result in minor or moderate injury if not avoided.
CAUTION, Laser Radiation: This combination of laser radiation symbol and signal word
indicates the dangers of a laser targeting light.
2.5 Electrical Connection
When connecting or when working on the mains voltage, the general safety guidelines are to be ob-
served, e.g. when connecting power transformers. Supply voltage can be lethal when touching. Improp-
er installation can cause serious injury or physical damage. Only qualified personnel are allowed to work
with mains voltage.
2.6 Laser Targeting Light
For easy alignment, the pyrometers may be equipped with a laser targeting light, laser class 2 (ac-
cording to IEC 60825-1) and has a sticker shown on the right. The laser emits a visible red light with a
maximum power of < 1 mW and a wavelength around 650 nm.
|SAFETY INSTRUCTIONS|:
Never look into the direct or reflected laser beam.
Do not point the laser to anyone.
If laser radiation hits the eye, the eye should be averted
immediately.
2.7 Through-lens Sighting / View Finder
Devices with through lens sighting and temperature range above 1400°C are equipped with an adjusta-
ble eye protection filter in the eyepiece to reduce glare at high measurement temperatures. The unpro-
tected look at temperatures >1400°C can damage the eyes function permanently.
|SAFETY INSTRUCTIONS|:
Only look with darkened eyepiece at objects with temperatures above 1400°C / 2552°F to protect the
eyes against glare at high radiation temperatures.
Before looking at the high temperatures, always first adjust the eyepiece by turning it to the darkest
position.
2.8 Device Labels
On the top of the device there is the type label (nameplate) as well as a warning sticker for devices with
laser targeting light.
The device must be mounted in a manner that the labels are still clearly visible after installation.
Keep the warning signs in always legible condition
Replace damaged labels
Laser
beam
direction
Laser warning label
on top of the device

METIS M311 / M322 / H311 / H322 (17-pin)
Overview
7
3 Overview
3.1 Intended Use
The here described 2-color pyrometers Metis M3 and H3 are devices for non-contact temperature
measurement. With its short-wave spectral range they are suitable for measurements on metals, ceram-
ics, graphite etc. with temperature ranges depending on the model execution between 300 and 3300°C
(M3) or 350 and 3300°C (H3). The M3 models have a response time of < 1 ms. The H3 models are
high-speed instruments with a response time of < 80 µm.
3.2 Scope of Delivery
Pyrometer, software SensorTools, works certificate, user manual
(connection cables are not included in scope of delivery and have to be ordered separately).
3.3 Model Designs
Standard models:
1
Optics
2
Laser warning label
(only devices with laser targeting light)
3
Device identification label
4
Depending on sighting:
- Eyepiece (models with view finder)
- Laser targeting light push button
- Connector for TV signal
5
LED to indicate operating status
6
Connectors for power supply, 2 linear
analog current outputs for manipulated
variable and actual value, 4 digital inputs,
2 digital outputs, 1 analog input, PID con-
troller, a serial interface (M3: RS232 /
RS485 switchable; H3: RS485)
7
Mounting rail
8
Mounting thread (M5) for front mounting
the pyrometer or accessory
9
Fiber optics with adjustable focus dis-
tance
10
Optical fiber for transporting the heat
radiation to the pyrometer
11
Tube to protect the optical fiber connec-
tion
3.4 Identification Label
The identification label on top of the device shows information to:
manufacturer, reference number, temperature range, serial number, serial
interface output (=digital output), analog output, power supply, country of
manufacture and CE sign.
1
8
7
6
5
4
Differences in models with fiber optics:
10
9
11
2
8
3
M3 11 06001300058130423-A
Temp. Range: 750 - 2500 °C
1382 - 4532 °F
Serial #: 1234
Digital Output: RS 485
Analog Output: 2x 0/4 - 20mA
Made in Germany Power: 18 - 30V DC
Sensortherm GmbH

METIS M311 / M322 / H311 / H322 (17-pin)
Electrical Connection
8
M3 / H3
White
Brown
+24 V
0 V
4 Electrical Connection
4.1 Cable Colors and Pin Assignment
The electrical connection of the pyrometer (supply voltage and measuring signal) will be done via the
17-pin connector on the device’s rear side. For this purpose, pre-assembled connection cables are
available as accessories (cables 20-wire + shield, with straight connector and optionally with integrated
USB interface converter, see 9.4 Accessories).
Note: The unit has 3 separate circuits: supply, interface and power outputs. The reference potentials
GND should not be connected together. To prevent accidental short circuits, cable wires not in use
should be secured to the supplied screw terminals.
Cable colors
No.
Function
Pins
White
1
+ 24 V DC Power supply (18–30 V DC)
3
7
8
9
10 11
5
6
4
3
2
1
12 13
14
15
16 17
View from outside
to the 17-pin
device plug
Brown
2
0 V DC Power supply
1
Green
3
+ Analog output 1 (0 / 4–20 mA)
4
Yellow
4
- Analog output 1 (0 / 4–20 mA)
6
Blue
7
+ Analog output 2 (0 / 4–20 mA)
2
Red
8
- Analog output 2 (0 / 4–20 mA)
9
Black
9
Digital input 1 1)
7
Violet
10
Digital input 2 1)
10
Pink
6
Digital input 3 1)
5
Grey
5
Digital input 4 1)
8
Brown-green
14
Analog input 1)
14
Grey-pink
11
Digital output 1 1)
11
Red-blue
12
Digital output 2 1)
12
White-yellow
15
RS232: RxD
RS485: B (+) 2)
15
White-grey
17
Brown-yellow
16
RS232: TxD
RS485: A (-) 2)
17
Brown-grey
18
White-pink
19
DGND (ground for interface)
16
Brown-pink
White-green
13
Reference voltage output (10 V ±1%, max. 10 mA) 1)
13
Housing
20
Shield (connect only for cable extension, do not connect in the control cabinet)
1) Reference potential 0 V, brown 2) H3 models only RS485
4.1.1 Power Supply
With connection of the supply voltage (standard 24 V DC, possible range 18–
30 V) the unit is ready for operation with the following factory settings (chang-
ing the settings is possible via interface and Software SensorTools, see 7).
The supply voltage must be protected with a slow-blow fuse of 800 mA.
Interrupt the power supply to turn off the pyrometer, e.g. by disconnecting the connector.

METIS M311 / M322 / H311 / H322 (17-pin)
Electrical Connection
9
Power status LED: Indicates the operating status of the pyrometer:
Orange in the self-test phase (M3 ca. 2 s; H3 during the initialization and
thermostatic phase for ≤ 3 min.)
Green when the pyrometer is ready to operate
Red when an error occurred (see 10.3 Trouble-shooting).
4.1.1.1 Factory Settings
Parameters Factory settings
Temperature sub range ........................................ Corresponds to basic range
Response time t90 ................................................. Minimal (corresponds to: M3: <1 ms; H3: <80 µs)
Emissivity slope .................................................... 1.000
Switch-off limit....................................................... 10%
Switch-off verification............................................ 0 ms
Emissivity ε (channel 1 and 2) .............................. 1.00 (corresponds to 100%)
Transmittance....................................................... 100%
Spot size fill factor................................................. 100%
Serial interface RS232 / 485................................. RS485
Data transmission speed (baud rate).................... 115.2 kBd
Buffer mode .......................................................... off (at “on”: buffer interval: 100 ms, single reading)
Upscale Burnout function...................................... off
Device address ..................................................... 00
Interface delay ...................................................... 00 (for RS232 and RS485)
Maximum value storage........................................ off
Laser targeting switch-off time.............................. 180 s
Analog output 1..................................................... 4–20 mA, output temperature: measured temperature
Analog output 2..................................................... 0–20 mA, output temperature: PID control output
Digital input 1 ........................................................ Controller start/stop
Digital input 2 ........................................................ No function
Digital input 3 ........................................................ Clearing of peak picker
Digital input 4 ........................................................ Laser targeting light on / off
Analog input.......................................................... No function
Digital output 1...................................................... Contact ready to use (device ready to operate)
Digital output 2...................................................... Controller active
Inputs / outputs
Input debounce time ............................................. 100 ms
Output activation time........................................... 0 ms
Output hold time.................................................... 10 ms
Limit switch: .......................................................... center of temp. range °C / °F; hysteresis: 10°C / 20°F
Device over temperature: ..................................... 50°C / 120°F; hysteresis: 2°C / 5°F
PID controller
Setpoint ............................Center of temp. range
Proportional band Xp........1%
Derivative time Td ............0 ms
Integral time Ti..................10 ms
Sampling time...................10 ms
Ramp time........................0 ms
P-zsc.................................100%
P-max ...............100%
P-min ................0%
P-Dyn................100%
AutoTune..........at each start
(AutoTune target temp: 50%)
Ramp time........0 ms
Hold time ..........0 ms
INFO to baud rate: The factory setting of the baud rate is set to 115 kBd to ensure also at
longer interface cables a working data transfer. For data transmissions with the highest speed,
baud rate and buffer mode must be adjusted (see 7.2.3.4)
LED

METIS M311 / M322 / H311 / H322 (17-pin)
Electrical Connection
10
M3 / H3
0...20 mA
4...20 mA
A
0...20 mA
4...20 mA
A
+IOUT1
-IOUT1
+IOUT2
-IOUT2
Green (+)
Yellow (-)
Red (-)
Blue (+)
Note: The outputs are galvanically
isolated from the supply voltage.
Max. 100 mA
0 V
Min. 240 Ω
M3 / H3
Output
+24 V
100 kΩ
White
Grey-pink
Brown
0 V
Red-blue
4.1.2 Analog Output 1 and 2
The analog outputs are adjustable (e.g. for a temperature display
device) to:
0–20 mA or 4–20 mA
Furthermore, the following adjustments can be done:
Analog output 1always provides the measured temperature
(always the temperature selected and displayed in the control
window in SensorTools; see also 7.2.2 Control window in
SensorTools).
Analog output 2 can be assigned to provide different signals:
- 2-color temperature
- 1 channel temperature (optional channel 1 or 2)
- Device temperature
- Control output (= manipulated variable) for PID controller
4.1.3 Digital Inputs / Outputs and Analog Input
7 ports are each available as (configuration under 7.2.3 Device settings and configuration Digital
Input / Output):
Digital output of a switching signal (invertible, see under 7.2.3 Various settings Logic NO / NC)
to:
- Device ready to operate (device ready and error-
free after self-test)
- Material detection (limit switch turns on when ex-
ceeding the beginning of temperature range)
- Limit switch when a certain temperature threshold
is exceeded or falling below
- Exceeding the maximum allowed device tem-
perature
- Signal strength too low (as dirty window alarm
function: enables to detect the degree of contamination of the pyrometer‘s optics, viewing window
or identify interferences (dust...) in the IR sensor’s sight path and trigger an alarm if necessary).
- Controller activity of PID controller, control process within adjustable setpoint limits, control pro-
cess successfully completed, hold time finished.
Digital input: A voltage pulse of 24 V (exception: continuous voltage at "Activate controller"), pulse
length adjustable via software (minimum 3 ms, factory settings 100 ms) under 7.2.3 Digital Input /
Output debounce time enables:
- Clear of peak picker (see 6.7)
- Start / stop controller (PID controller, see 7.2.4).
- Activate controller: The control process is activated
as long as voltage at the terminal is present.
- Load (stored) pyrometer configuration (also PID
controller parameters) (only digital inputs 1-3, see
under 7.2.5 Setups).
- Switch on / off laser targeting light (when equipped
with laser targeting light).
(the targeting light will automatically switched off after 3 minutes if it is not switched off manually.
Adjustable via software under 7.2.3 Laser targeting light settings).
CAUTION, Laser Radiation, Laser Class 2:
Never look into the direct or reflected laser beam.
Do not point the laser to anyone.
If laser radiation hits the eye, the eye should be averted immediately.
>10 kOhm
0 V
+24 V
Push
button
0 V
+24 V
White
Brown
Black
Violet
Pink
Grey

METIS M311 / M322 / H311 / H322 (17-pin)
Electrical Connection
11
Setpoint input via external voltage 0...10 V: This voltage
can also be made via the 10 V reference voltage output
and a 2 kΩ potentiometer (connected as a voltage divider,
the internal resistance of the input is 40 kΩ).
2 kΩ
M3 / H3
Internal resistance
40 kΩ
0 V
+10 V reference voltage
Voltage
divider
Power supply
0-10 V
White-green
Brown-green
Brown
Analog input (input 5):
About a 0-10 V supply it can be adjusted ex-
ternally:
- The emissivity slope
(0 V = 0.8; 10 V = 1.2)
- The emissivity for every channel
(0 V = 0.05; 10 V = 1.2)
- The setpoint for PID controller
(0 V = zero scale temperature,
10 V = full scale temperature)
- Measuring distance at M3 devices with mo-
torized focus (0 V = shortest distance, 10 V
= widest distance)
4.1.4 Serial Interface RS232 / RS485 (M3: switchable RS232 / RS485; H3: only RS485)
The serial interface is used for digital communication of the pyrometer with another computer, for exam-
ple a PC for data transmission to the software SensorTools. Via interface always all temperatures are
transferred (2-color and one channel temperatures) as well as device information and parameters.
The maximum transmission speed (in Baud) is limited by the cable length, it is halved with each dou-
bling of the transmission path.
RS232: about 7 m cable length with 19.2 Bd. Adjustable are values from 4.8 to 115.2 kBd.
RS485: about 2 km with 19.2 kBd. Adjustable are values from 4.8 to 921.6 kBd.
Connecting one pyrometer via
RS232 or RS485:
In a short RS232 or RS485 connection to the mas-
ter (computer receiving the data), the pyrometer is
connected directly as a point-to-point connection
with the master.
It is advantageous to connect all interface cables
in order to avoid reflections.
Connecting several pyrometers via RS485:
For a reflection-free operation with longer cables, pay attention to the correct cable termination. Termi-
nation at the physical bus is at the beginning and at the end.
Master at
the beginning:
Master in
the middle:
Master
A (-)
B (+)
DGND
120 Ω
... Pyrometer n
Terminating
resistor 120 Ω
Pyrometer 2
Pyrometer 1
Terminating
resistor 120 Ω
in the master
or manually
A
B
GND
A
B
GND
A
B
GND
A
B
GND
GND
B
A
B
A
120 Ω
... Pyrometer n
Terminating
resistor 120 Ω
Pyrometer 1
A
B
GND
B
A
B
A
120 Ω
Master
A (-)
B (+)
DGND
A
B
GND
Terminating
resistor 120 Ω
RxD
TxD
GND
Pin 2
Pin 3
Pin 5
A (-)
B (+)
GND
RS485
(Master /
PC)
RS232 (PC)
Pyrometer
Pyrometer
A (-) Brown-grey
B (+) White-yellow
B (+) White-grey
A (-) Brown-yellow
TxD Brown-grey
RxD White-yellow
RxD White-grey
TxD Brown-yellow
DGND White-pink
DGND Brown-pink
DGND White-pink
DGND Brown-pink

METIS M311 / M322 / H311 / H322 (17-pin)
Electrical Connection
12
When operating multiple devices (up to 32 are possible), each device needs to assign its own address
(directly on the device or via software SensorTools), under which it can be addressed later. For this
purpose, initially, each device must be connected individually and provided with an address (00-97). Af-
ter that, all devices can be connected.
If specific parameters for all devices should be changed simultaneously, the global address 98 is used
(there is no response from the device). If the address of a device is unknown, you have the opportunity
to address each device independently of the set address with the global address 99 (connect only one
device).
4.1.4.1 Interface Converter (Accessory)
A quick and easy way to
connect the pyrometer with
a PC is to use an interface
converter or a connecting
cable with integrated inter-
face converter (see 9.4 Ac-
cessories). Depending on
the operating system, suita-
ble drivers are installed automatically or can be found on the CD supplied with the software Sensor-
Tools in the directory Drivers FTDI_USB_COM or after installing SensorTools in the installation direc-
tory
(updated driver for Windows from the FTDI website: http://www.ftdichip.com/Drivers/VCP.htm).
To achieve the maximum transfer speed, it is absolutely necessary to change the wait time in the ad-
vanced connection settings from 16 ms to 1 ms. These settings are available in the Control Panel via
the Device Manager > Ports (COM & LPT) > USB Serial Port > Port Settings > Advanced > Wait time.
More information is available in the FTDI application note AN_107 - Advanced Driver Options.
4.1.5 Shielding
To meet the requirements for electromagnetic compatibility (EMC), only shielded cables should be
used. The shield of our connection cables is connected on the pyrometer side in the plug housing. If
faults occur during the pyrometer operation, the pyrometer should be connected to system ground. For
this, the front-side end screws have to be used, the anodized housing is not a reliable electrical connec-
tion. The shielding wire is not connected to prevent ground loops and damage caused by transient cur-
rents. When extending the cable, the screen must be extended with.
4.1.6 Camera Module
Devices with camera module as alignment are
equipped with an additional connector at the
rear (Lemo connector) for the output of the
camera signal (standard FBAS signal). Cable
see 9.4 Accessories.
cable connector: type FE.0S.302.CLAC50
Fa. Lemosa GmbH, http://www.lemo.de)
Pin
Output
1
FBAS signal
2
Ground
Cable colors
Metis M3 / H3
(12-pin connector)
Cable colors
interface converter
RS232USB (TxD / RxD)
RS485USB (A‾/ B+)
White-pink or brown-pink (DGND)

Black (GND)
White-yellow or white-grey (B+/ RxD)

Orange (B+/ TxD)
Brown-yellow or brown-grea (A‾ / TxD)

Yellow (A‾/ RxD)
2
1

METIS M311 / M322 / H311 / H322 (17-pin)
Mechanical Installation
13
5 Mechanical Installation
5.1 Mounting
The mounting rail on the bottom case is for the stable take-up of for ex-
ample of a ball and socket mounting (for fiber optics devices a mounting
angle is recommended, see 9.4 Accessories)
Front M5 threaded screws can also be used for mounting (all 4 threads
has to be used for fixing).
The slightest deviation from the optical axis is achieved with the optics
adapter/holder of motor focus and fixed focus devices.
Note that the installation of the pyrometer is free of vibrations, if neces-
sary, helps the use of rubber absorbers when mounting.
To keep the optical fiber ready for use as long as possible, it should be
exposed as little as possible to permanent movement and mechanical
stress. Lay the optical fiber as possible with a large bending radius, especially if it is carried along
moving parts.
During installation of the optical fiber, it is advisable that both plug ends are not yet connected to the
pyrometer and the optics. Tensile and torsional stresses are to be avoided.
INFO: Through manufacturing tolerances the optical and mechanical axis are not running 100%
in the same direction. The pyrometer should be realigned if it is installed again and twisted in
the same holder (see 5.4 Alignment onto the Measuring Object).
5.2 Mounting Optical Fiber / Optics (optical fiber devices)
5.2.1 Bending Radius Optical Fiber
The color code on the optical fiber identi-
fies the optic diameter and minimum bend-
ing radius associated.
When laying the optical fiber it is to ob-
serve the minimum bending radius. A
bending radius smaller than specified can
cause a stretched or broken optical fiber.
5.2.2 Winding and Unwinding the Optical Fiber
Always ensure that the minimum bending radius is not exceeded.
During winding and unwinding the optical fiber must be able to move easily
and should not be twisted. Ideally, one hand winds up the light guide care-
fully, while the other hand guides the cable roll. For torsion-free winding only
one side of the optical fiber should be connected, than the other can be
moved freely.
NOTE: Strong tensile and torsional forces during rolling and
mounting should be avoided.
Color code
of the optical fiber
Fiber diameter
Minimum
bending radius
Blue
0.4 mm
150 mm
Red
0.2 mm
75 mm
White
0.1 mm
38 mm
Expl.: Metis with swivel
mounting base, cooling
plate and air purge

METIS M311 / M322 / H311 / H322 (17-pin)
Mechanical Installation
14
5.2.3 Mounting of Optical Fiber
Assignment fiber to pyrometer and optics: Each fiber is uniquely associated to a pyrometer and op-
tics. For identification, all three components are tagged with the same device number. The measure-
ment accuracy can
only be guaranteed
with proper as-
signment.
INFO: To meet the high accuracy, the instrument should be recalibrated when replacing an
optics or the optical fiber.
NOTE: To prevent the ingress of dirt, remove the protective caps from the pyrometer and op-
tics and fiber just before installation.
Keep the protective caps to be able to protect against dirt in any subsequent dismantling or
storage.
The optical fiber has to be mounted true sided:
The colored heat shrink tube marker matches to
the pyrometer side.
The optics fit on the side without marking
Unscrew the light guide protective tube from the
pyrometer’s housing
Pull the protective tube somewhat about the light
guide on the colored side to avoid pulling it over
the complete fiber after fiber assembly.
Remove the protective caps from the pyrometer
and optical fiber, insert the side with the turn pro-
tected fiber connector to the pyrometer, and make sure
that pin and recess snap together.
Tighten lock nut hand-tight (do not use a tool, otherwise
the screw or optical fiber can be damaged).
Finally screw the protective tube back on the pyrometer
housing.
5.2.4 Connect the Optics
Remove the protective caps from optical fiber and
optics
The fiber-optic connectors on the side of the optics
does not require special adjustment and is just
plugged and screwed
Tighten lock nut hand-tight (do not use a tool, other-
wise the screw or optical fiber can be damaged).
Color mark
Connector pyrometer’s side
(turn protected)
Ambient temperature on
pyrometer’s side max. 100°C
Ambient temperature on
optics side max. 250°C
Connector optics side
Recess
Pin
Lock nut
Opt. fiber
Protective tube
Color mark

METIS M311 / M322 / H311 / H322 (17-pin)
Mechanical Installation
15
5.3 Ambient Temperature
The M311 and M322 pyrometers are designed for ambient temperatures between 0 and 80°C, H3 mod-
els for ambient temperatures between 0 and 60°C.
To prevent it’s overheating, the camera module of M3 models is switched off from 55°C device tempera-
ture (is not applicable for H3 devices). The laser of laser targeting light models is deactivated at a de-
vice temperature above 65°C (M3 devices) or 60°C (H3 devices). Below that temperature it can be used
again.
Fiber optic devices can be exposed on optics and optical fiber to ambient temperatures between -20
and 250°C without cooling, for the housing the same temperatures apply as for standard devices (0–
80°C).
Operation outside this temperature leads to incorrect measurements and may damage the unit.
To comply with the permitted ambient temperature sufficient distance from the (hot) measuring object is
observed.
The internal housing temperature can be read out via the soft-
ware SensorTools (see 7).
It is also possible to configure one of the digital (switching) out-
puts in such a way that a corresponding signal is switched if ex-
ceeding the maximum temperature (see 4.1.3 Configurable In-
puts / Outputs and under 7.2.3 Digital Input / Output configuration).
Accessory: With radiant heat from the front, the pyrometer can be protected by a cooling plate. The
use of the pyrometer in ambient temperatures outside the permissible pyrometer’s ambient temperature
is possible with an additional cooling housing.
5.4 Ratio Technology / Alignment onto the Measuring Object
In opposition to radiation pyrometers, 2-color pyrometer measure in two spectral ranges simultaneously
(Two separate detectors at two adjacent narrow-band wavelengths) and determine the temperature by
forming the radiation ratio (quotient).
In this method it is not necessary to know the emissivity of the target material. It cancels out because
the radiation ratio remains constant at a neutral attenuation of infrared radiation (by dust, smoke ...).
However, this reduction will only be successful if signal attenuation occurs homogeneously on both
wavelength ranges. If the emissivity change in the two wavelengths e.g. with increasing temperature,
also the relationship changes which results in measurement errors.
Via the Software SensorTools the 2-color temperature and the temperatures of the individual channels
can be shown simultaneously to identify possible wavelength dependence (see 6.1 Emissivity Slope).
To detect the temperature correctly, the pyrometer
must be properly aligned to the measuring object. In
the focus point of the optics (focus distance) the spot
size diameter is the smallest. Also measurements in
the defocused area can be done to determine the av-
erage temperature of a bigger spot.
To get a correct measurement result, the following
requirements must be observed:
For measurements through window, the window material has to be observed. If the transmission
properties are not uniform (e.g. quartz glass), the corresponding emissivity slope has to be entered.
The distance to the measured object must be in the range of focusable measurement distance of the
optics, if a precise spot measurement has to be made.
If the target is smaller than the spot size diameter, a
warm background temperature effects the measure-
ment. But these shows until about 300°C an impact and
about that the influence is also slight.
Spot size bigger
Focus point
Spot size smaller than measuring object
Measuring object
Pyrometer’s spot size bigger than measur-
ing object, note background radiation.
DT: internal de-
vice temperature
via software

METIS M311 / M322 / H311 / H322 (17-pin)
Mechanical Installation
16
If the target is smaller than the spot size, less signal strength arises to the pyrometer. If this falls be-
low 2%, usually a measurement is no longer possible (also see 6.5 Switch-off Level).
Entering a fill factor that indicates how much percent of the measuring field is filled, has no influence
if using the 2-channel measuring mode. In one channel mode measurements can be performed of
measuring objects that are smaller than the spot size. Requirement is a cold background tempera-
ture, otherwise background temperature will be influenced the measurement result.
5.4.1 Alignment with the Laser Targeting Light
The laser targeting light is a conical red laser beam
with the largest diameter directly at the lens and the
smallest and sharpest in the focused distance, i.e. at
the point where the measuring field is the smallest.
The focus distance (=measuring distance at the
smallest spot size) is easy to find where the laser
dot is the smallest.
INFO: The size of the laser point does not match to the spot size, spot sizes are given in the
spot size tables (see 5.6).
CAUTION, Laser Radiation, Laser Class 2:
Never look into the direct or reflected laser beam.
Do not point the laser to anyone.
If laser radiation hits the eye, the eye should be averted immediately.
Turn on / off: Via the targeting light button on rear panel or via software
SensorTools (see 7.2.2,Control window).
(The targeting light will automatically switched off after 3 minutes if it is not
switched off manually. Adjustable via software under 7.2.3 Device Set-
tings Laser targeting light settings)
INFO: The laser targeting light is turned off at a device temper-
ature above 65°C (M3 devices) or 60°C (H3 devices)
If the targeting light does not turn on, probably the device's internal
temperature is too high. In this case, the place of installation of the
pyrometer should be checked (excessive heat radiated from the
measuring object). If the temperature falls below the switch-off val-
ue, the laser will work again.
5.4.2 Alignment with the Through Lens Sighting / View Finder
The view finder provides upright imagery so that the target under
measurement can be viewed visually. A target circle shows the
measuring spot when the target is in focus.
Devices with temperature range above 1400°C are equipped with a
continuously adjustable eye protection filter in the eyepiece to reduce
glare at high measurement temperatures. Rotating the eyepiece will
change the brightness.
INFO: The size of the target circle does not match to the spot
size, spot sizes are given in the measuring field tables (see 5.6).
CAUTION, Danger of eye damage at measuring temperatures above 1400°C!
To protect the eyes at high measuring temperatures, first, before alignment, the eyepiece
must be adjusted to the darkest position, a safe method is the adjustment by looking at a
replacement light source, e.g. a lamp.
Laser target-
ing button
Software
Focus point
Spot bigger
View finder

METIS M311 / M322 / H311 / H322 (17-pin)
Mechanical Installation
17
5.4.3 Alignment with the Camera Module
Pyrometers with a color camera module provide
a composite video output that can be connected
to a TV or monitor or PC via converter. The py-
rometer is focused and aligned via a target cir-
cle on the TV screen.
About the field of view of approximately 3.6% x
2.7% of the measured distance also the meas-
urement events can be observed. About the PC software, image overlays and camera settings can be
configured (see under 7.2.2,Control window camera settings).
INFO: The size of the target circle does not match to the spot size, spot sizes are given in the
measuring field tables (see 5.6).
INFO: The camera module of M3 devices is turned off at a device temperature above 55°C.
If the camera module does not turn on, probably the device's internal temperature is too high. In
this case, the place of installation of the pyrometer should be checked (excessive heat radiated
from the measuring object). When temperature falls below 55°C the camera module is working
again.
5.5 Setting the Measuring / Focus Distance
The focal distance is the distance at which the lens has the smallest spot size. In most cases, this dis-
tance is also the required measuring distance.
With focusable optics the focus distance can be changed continuously within a predetermined range,
so the smallest possible spot size is always achieved.
5.5.1 Manually Focusable Optics
Release optics turn counterclockwise
Move optics in or out until the measured distance is found (see 5.4
Alignment onto the measuring object or via the optics pull-out in the
Spot Size Tables, section 5.6).
- Pulled optics: short measuring distance
- Inserted optics: long distance measurement
Lock optics turn clockwise (hand-screwed, without tools).
5.5.2 Motorized Focus Optics (only M3)
The distance only can be set via software (see 7, SensorTools Software)
or interface commands (see 11).
TV connector
1. Release
2. Adjust
3. Lock
1
2
3

METIS M311 / M322 / H311 / H322 (17-pin)
Mechanical Installation
18
5.5.3 Manually Focusable Fiber Optic Lenses
Optics OL25: Just slightly open the lens locking ring for re-
leasing and locking the optics, as rear optics part rotates with
opening of the locking ring.
Optics OL12: Optics lock screw (allen screw) for releasing
and locking the optics.
Pull the rear optics part out of the tube to focus according to
the required measuring distance (laser beam is focused and
has the smallest diameter).
NOTE: Never pull on the flexible part of the light
guide to focus!
5.6 Spot Size Tables
The following tables show the optical data of the different device types. The values in the tables are ex-
emplary, intermediate measurement distances must be determined by interpolation. If the measuring
distance (= focused distance) differs from the adjusted or specified, a measurement is also possible, but
the spot size changes (usually it is larger, see 5.6.3 Calculation of the spot size diameter outside the
focused distance). Measuring distances at manually focused optics are specified from lens front, at
motorized optics from the protection window.
5.6.1 Manually Adjusted or Motorized Focus Optics
Optics
Model
Temperature ranges [°C]
M322: 300-1000°C
H311: FSC <1500°C
H322: FSC <1200°C
M311/ M322: all
other temp. ranges
H311:FSC ≥1500°C
H322: FSC ≥1200°C
Meas.
distance
a [mm]
Optics
pull-out
S [mm]
Spot size diameter M [mm]
M311 / H311:
OQ11-A1
M322 / H322:
OQ22-A2
340
26
1.4
0.8
400
20.7
1.8
1.3
500
15.5
2.7
1.5
600
11.7
3.2
1.8
800
7.7
4.1
2.3
1000
5.5
5.6
2.8
1500
2.7
7.7
4.6
2000
1.3
10
5.8
2500
0.5
12.7
7.3
3000
0
14
7.8
M311: OQ11-F1
M322: OQ22-F2
1000
7.5
5.6
2.8
2000
3.3
10
5.8
3000
1.9
14
7.8
4000
1.2
19
11
5000
0.8
24
14
10000
0
51
29
Aperture diameter D: Full scale temperature value ≤1400 °C: 14-16 mm
Full scale temperature value > 1400 °C: 7-8 mm
(D is dependent on the optics pull-out: optics pulled out: higher value, optics inserted: smaller value)
FSC = Full scale temperature
Lens locking ring
Rear optics part
Optics lock screw
Resistant part of
the optical fiber
Focus
adjustment
Tube
Flexible part of the
optical fiber

METIS M311 / M322 / H311 / H322 (17-pin)
Mechanical Installation
19
5.6.2 Focusable Fiber-Optic Lenses
25 mm Optics
Model
Temperature ranges
[°C]
M322: 300-1000°C
H311: FSC <1500°C
H322: FSC <1200°C
M311/ M322: all
other temp. ranges
H311:FSC ≥1500°C
H322: FSC ≥1200°C
Meas. distance a [mm]
Spot size diameter M [mm]
M311 / H311:
OQ25-B1
M322 / H322:
OQ25-B2
240
2
1
300
2.5
1.5
400
3
2
500
3.7
2.5
600
4.5
3
700
5.2
3.5
800
6
4
1000
7.7
5
1500
11.5
7.5
2000
15.4
10
2500
19.2
12.5
3000
23
15
Aperture diameter D: 10-13 mm
Fiber Ø 0.4 mm
Fiber Ø 0.2 mm
Measuring distance
a [mm]
Spot size diameter M [mm]
12 mm Optics
OQ12-C0
120
2.2
1.2
150
2.8
1.5
200
3.8
2
250
5
2.5
300
6.3
3.4
350
7.5
4
400
9
4.7
500
12
6
Aperture diameter D: 5-7 mm
Fiber Ø 0.4 mm
Fiber Ø 0.2 mm
(D is dependent on the optics pull-out: optics pulled out: higher value, optics inserted: smaller value)
FSC = Full scale temperature
5.6.3 Calculation of the Spot Size Diameter outside the Focused Distance
The spot size diameter determines the area on the measurement object from which 90% of the temper-
ature radiation is detected by the pyrometer; therefor the spot size tables specify spot sizes for different
measuring distances (or focused distances). For calculating intermediate values in front of and behind
the focused measuring distance, the following formula can be used or the spot size calculator integrated
in SensorTools (see 7.4):
a Focused distance
M Spot size diameter in the focused measuring
distance
a1Measuring distance longer than focused
measuring distance
M1Resulting spot size on measuring distance a1
a2Measuring distance shorter than focused
measuring distance
M2Resulting spot size on measuring distance a2
D Aperture (specifies the spot size directly on
the optics lens, it differs depending on the optics pull-out. The largest value applies at a fully ex-
tended optics, the lowest value is with inserted lens)
OQ12
OQ25
M
M2
M1
a2
a
a1
M1= (M+D)-D
a1
a
M2= (M-D)+D
a2
a

METIS M311 / M322 / H311 / H322 (17-pin)
Pyrometer Parameters / Settings
20
6 Pyrometer Parameters / Settings
The pyrometer is ex works ready to measure with the factory settings. The connection to a PC is re-
quired for further adaptation to the measuring task and to configure the inputs and outputs, all settings
can be made via the included software SensorTools (see 7,SensorTools Software).
Further it is possible to communicate via interface commands directly to the pyrometer (see 11, Inter-
face Commands). The commands can be used for writing an own control or can be entered via a ter-
minal software.
6.1 Emissivity Slope
Measuring objects that emit the same on the two wavelengths of a 2-color pyrometer are often referred
to as "Gray bodies" (e.g. well oxidized iron or steel surfaces). They can be measured accurately with the
setting 1.00 for the emissivity slope without correction.
Measuring objects whose emissivity is different on the two wavelengths of the pyrometer (e.g. shiny un-
oxidized metal surfaces) need for accurate temperature measurement a correction setting, the so-called
emissivity slope Ɛ2/ Ɛ1. The value can be larger or less than 1, depending on whether the emissivity of
channel 1 or 2 is higher (gain from 1.000 to 0.800, attenuation from 1.000 to 1.200).
Regardless of emissivity slope 1 or above or below is
used to measure, the ratio must remain constant in the
required temperature range. In the software Sensor-
Tools the 2-color temperature and those of the two
channels can be displayed at the same time. A 2-color
measurement is possible if the curves of the two chan-
nels in the required measuring range run uniformly par-
allel, so the ratio is constant. If the temperature values of
the curves are identical (at the same emissivity setting),
then the emissivity slope is 1. Do they run parallel, so
the correct value for the emissivity ratio must be found,
such by comparative measurement with a thermocouple
and subsequent ratio setting until the temperatures match.
6.2 Emissivity ε(when used in single-channel mode)
The pyrometer also can be used in
single-channel mode, the measure-
ment corresponds to that of a conven-
tional radiation pyrometer. In this
measuring mode the input of an emis-
sivity is necessary.
The emissivity indicates the radiation
capacity of an object to be measured
relative to a blackbody source with the
same temperature. To obtain correct
readings, the emissivity must be taken
into account in the measurement and
adapted for the respective measuring
material on the pyrometer. Each mate-
rial has a max. emissivity of 1 which
can be set, an adjustment of up to 1.2
can be used. The emissivity adjust-
ment above 1 allows for temperature
corrections due to higher background
reflection.
In principle applies: to measure metals
in a short-wavelength spectral range
Measuring object
Emissivity Ɛ(Epsilon)
M311/H311
0.7-1.1 µm
M322/H322
1.45-1.8 µm
Blackbody
1
1
Aluminum, shiny
n.s.
0.05-0.2
Aluminum, oxidized
n.s.
0.3-0.4
Aluminum, sandblasted, rough
n.s.
0.4-0.5
Aluminum, black anodized
n.s.
0.9
Lead oxidized
n.s.
n.s.
Bronze
0.2-0.4
0.2-0.4
Iron, liquid
0.15-0.3
0.1-0.25
Iron, shiny
0.3-0.4
n.s.
Iron, oxidized
0.7-0.9
0.65-0.85
Graphite
0.8-0.92
0.8-0.9
Gold, shiny
0.02-0.05
0.02-0.05
Inconel, shiny
0.35-0.45
0.4
Inconel, oxidized
0.65-0.75
0.6-0.7
Copper, shiny
0.10
0.05-0.1
Copper, oxidized
0.3-0.7
0.2-0.8
Magnesium, shiny
n.s.
0.15-0.2