Process Sensors METIS M311 User manual

Pyrometers
METIS M311 / M322
METIS H311 / H322
With 12-pin connector, LED or OLED display and push button device configuration
Versions with integrated optics, optical fiber, PID controller, Profibus / Profinet
Operating Manual

METIS M311 / M322 / H311 / H322 (12-pin)
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 Devices with 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 ......................................................................6
2.1 Use of the Operating Manual ..........................6
2.2Supplementary Information about the
Operation.........................................................6
2.2.1 Warning Notes..............................................6
2.2.2 Safety Labels / Symbols...............................6
2.3 Device Labels ..................................................7
2.4 Identification Label...........................................7
2.5 Laser Targeting Light ......................................7
2.6 Through-lens Sighting / View Finder ...............7
2.7 Electrical Connection.......................................7
2.8 Responsibility of the Operators / Process
Responsibility ..................................................7
3Overview.................................................................8
3.1 Intended Use ...................................................8
3.2 Scope of Delivery ............................................8
3.3 Model Designs.................................................8
4Electrical Connection ............................................9
4.1 Cable Colors and Pin Assignment (14 wire
connection cables)...........................................9
4.1.1 Factory Settings .........................................10
4.1.2 Power Supply .............................................10
4.1.3 Analog Output 1 and 2 ...............................11
4.1.4 Configurable Inputs / Outputs.....................11
4.1.5 Serial Interface RS232 / RS485 (M3:
switchable RS232 / RS485; H3: only RS485)
....................................................................12
4.1.5.1 Interface Converter (Accessory) ..............13
4.1.6 Shielding.....................................................14
4.1.7 Camera Module..........................................14
4.2 Devices with additional Profibus-DP or Profinet
connection .....................................................15
4.2.1Status LEDs for devices with Profibus /
Profinet .......................................................16
5Mechanical Installation .......................................16
5.1 Mounting ........................................................16
5.2 Mounting Optical Fiber / Optics (only devices
with optical fiber)............................................17
5.2.1 Bending Radius Optical Fiber.....................17
5.2.2 Winding and Unwinding the Optical Fiber ..17
5.2.3 Mounting the Optical Fiber .........................17
5.2.4 Connect the Optics .....................................18
5.3 Ambient Temperature....................................18
5.4 Ratio Technology / Alignment onto the
Measuring Object ..........................................19
5.4.1 Alignment with the Laser Targeting Light ...19
5.4.2 Alignment with the Through Lens Sighting /
View Finder.................................................20
5.4.3 Alignment with the Camera Module ...........20
5.5 Setting the Measuring / Focus Distance........21
5.5.1 Manually Focusable Optics ........................21
5.5.2 Motorized Focus Optics (only M3)..............21
5.5.3 Manually Focusable Fiber Optic Lenses ....21
5.6 Spot Size Tables ...........................................22
5.6.1 Manually Adjusted or Motorized Focus
Optics..........................................................22
5.6.2 Focusable Fiber-Optic Lenses ...................23
5.6.3 Calculation of the Spot Size Diameter
Outside the Focused Distance ...................23
6Configuring the Pyrometer .................................24
6.1 Key Functions................................................24
6.2 Parameters / Settings ....................................25
6.2.1 Response Time t90......................................26
6.2.1.1 Dynamic Adaptation at Low Signal Levels
(only M3 devices) .....................................26
6.2.2 Storage Mode Peak Picker (Maximum Value
Storage) / Clear Time tCL ............................26
6.2.3 Emissivity Slope .........................................26
6.2.4 Switch-off Level / Signal Strength / Dirty
Window Monitoring .....................................27
6.2.4.1 Switch-off Verification...............................27
6.2.5 Emissivity ε (when used in 1-color mode) ..27
6.2.6 Transmittance.............................................28
6.2.7 Spot Size Fill Factor ...................................28
6.2.8 Temperature Sub Range............................29
6.2.9 Temperature Unit........................................29
6.2.10 Analog Output.............................................29
6.2.11 Test Current................................................29
6.2.12 Upscale-Burnout (only via software
SensorTools) ..............................................29

METIS M311 / M322 / H311 / H322 (12-pin)
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6.2.13 Customize Analog Output (only via software
SensorTools) ..............................................29
6.2.14 Interface Type (only M3 devices) ...............30
6.2.15 Baud Rate...................................................30
6.2.16 Address ......................................................30
6.2.17 Interface Delay / Answer Delay..................30
6.2.18 Key Lock.....................................................30
7SensorTools Software.........................................31
7.1 Program Start / Connecting the Pyrometer ...31
7.2 Software Window...........................................33
7.2.1 Main Window Graphs ............................33
7.3 Settings for the Fastest Possible Measurement
Data Recording..............................................36
7.3.1 Control Window ..........................................37
7.3.2 Device Settings and Configuration.............39
7.3.2.1 Configurable Inputs / Outputs ..................40
7.3.2.2 Service functions ......................................43
7.3.2.3 Interface....................................................43
7.3.2.4 Data Collection (Buffer Mode)..................43
7.3.2.5 Single-Point Adjustment...........................45
7.3.3 PID Controller Equipment...........................47
7.3.4 Profibus- / Profinet Equipment ...................48
7.3.4.1 Fieldbus Mode Selection for Reading the
Pyrometer Data ........................................48
7.3.4.2 Writing Pyrometer Data ............................51
7.3.5 Setups ........................................................52
7.4 SensorTools Viewer: Graphical Measurement
Data Playback................................................53
7.4.1 Load / Open Measurement Data File(s).....53
7.4.2 Overview.....................................................53
7.4.3 Customize Views / Measurement Data
Evaluating...................................................54
7.4.4 Copy, Save, Print, Export... ........................54
7.5 Communication / Options ..............................55
7.6 Spot size calculator .......................................55
8SensorFlash Software (Update Firmware) ........56
9Technical Data......................................................57
9.1 Dimensions ....................................................59
9.2 Composition of the Type Number..................60
9.3 Accessories ...................................................61
10 Maintenance .........................................................62
10.1 Cleaning.........................................................62
10.2 Pyrometer Calibration....................................62
10.3 Trouble-Shooting ...........................................62
11 Communication via Serial Interface / Interface
Commands ...........................................................63
Index...........................................................................68

METIS M311 / M322 / H311 / H322 (12-pin)
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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 procedures in
this manual has to be followed.
Additionally the local accident prevention regulations and common safety regulations of the instruments’ opera-
tional area are valid.
The descriptions may differ from the current delivery status, since the pyrometer is continuously developed. Il-
lustrations 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 Devices with PID Controller
The PID controller is designed for temperature control in a variety of applications and has been tested in these
applications over a long period for our satisfaction; especially in fast processes. However, Process Sensors
Corporation doesn’t guarantee that the temperature control meets all the desired requirements over all pro-
cesses. Process Sensors Corporation excludes process responsibility.
1.4 Terms of Warranty
A warranty period is 12 months from date of shipment form the Process Sensors facility. The seller will repair
or replace the sensor at its own discretion. Further claims of the buyer against the seller or its agents are ex-
cluded, 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 de-
termined and void the warranty coverage. Repairs paid by the customer will include a 180 days warranty from
date of shipment. Transportation costs are to be paid by the customer. Any claims for damage caused by mis-
use, neglect or tampering with the sensor are excluded. Process Sensors Corporation does not guarantee that
the software is free from programming errors.

METIS M311 / M322 / H311 / H322 (12-pin)
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1.5 Copyright
This manual is protected by copyrights and is intended solely for internal purposes.
It is not permitted to transfer these instructions to third parties, duplication in any kind and form - including ex-
cerpts - as well as recovery and / or notification of contents without written permission of the manufacturer, ex-
cept 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 Process Sensors Corporation.
In addition, our employees are always interested in new information and experiences arising from the applica-
tion and can be valuable for improvement of our products.
1.7 Disposal
Do not dispose of the product in the household waste (WEEE Directive).
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.

METIS M311 / M322 / H311 / H322 (12-pin)
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2 Safety
2.1 Use of the Operating Manual
Any person who is tasked to carry out work with the device must have read and understood the operating in-
structions before beginning. Operation and maintenance of the system may only be performed by trained per-
sonnel.
2.2 Supplementary Information about the Operation
The following symbol is used to simplify the search for useful information:
|INFO| indicates useful tips, recommendations and information for efficient and trouble free operation.
2.2.1 Warning Notes
The following symbols are used in this manual and, if applicable, on the device as a mark for information, re-
strictions, preventive measures and security notes. This information indicates risks and how they can be
avoided.
Please pay attention to this symbols for safety reasons.
|CAUTION|This combination of symbol and signal word indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
|NOTICE|indicates a potentially hazardous situation that can lead to property and environmental damage if
not avoided.
|SAFETY INSTRUCTIONS|indicate specific safety-related instructions or procedures.
2.2.2 Safety Labels / Symbols
Additionally to the warning notes used in this manual, the following warning symbols are used. Warning sym-
bols are also to find on the device. Follow all measures marked with the label to avoid injury.
Indicates general hazards.
Indicates the hazard for the eyes due to a class 2 laser targeting light.
Indicates the hazard for the eyes from optical radiation.
Indicates the hazard of automatic startup of machine parts.

METIS M311 / M322 / H311 / H322 (12-pin)
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2.3 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.
Mount the device in a manner that the labels are still clearly visible after installation.
Keep the warning signs in always legible condition
Replace damaged labels
2.4 Identification Label
The identification label on top of the device shows logo of seller and
information to reference number, temperature range, serial number, serial inter-
face output (=digital output), analog output, power supply, manufacturer, country
of manufacture and CE sign.
2.5 Laser Targeting Light
For easy alignment, the pyrometers may be equipped with a laser targeting light, laser class 2 (according to
IEC 60825-1. 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, avert one's eyes immediately.
2.6 Through-lens Sighting / View Finder
Devices with through lens sighting and temperature range above 1400°C are equipped with an adjustable eye
protection filter in the eyepiece to reduce glare at high measurement temperatures. The unprotected 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.
2.7 Electrical Connection
When connecting or when working on the mains voltage, the general safety guidelines are observed, e.g. when
connecting power transformers. Supply voltage can be lethal when touching. Improper installation can cause
serious injury or physical damage. Only qualified personnel are allowed to work with mains voltage.
Our recommendation is the use of our wiring box accessory, this is a fully assembled connection set for Pro-
cess Sensors pyrometers.
2.8 Responsibility of the Operators / Process Responsibility
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 en-
vironmental 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.
Process Sensors Corporation does not guarantee that the temperature control in all processes will meet the
desired requirements. Process Sensors Corporation excludes the process responsibility.
Laser warning label on the device:
M3 11 06001300058130423-A
Temp. Range: 600 - 1300 °C
1112 - 2372 °F
Serial #: 1234
Digital Output: RS 485
Analog Output: 2x 0/4 - 20mA
Power: 18 - 30V DC
Made in Germany
Sensortherm

METIS M311 / M322 / H311 / H322 (12-pin)
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3 Overview
3.1 Intended Use
The here described 2-color pyrometers Metis M3 are devices for non-contact temperature measurement. With
its short-wave spectral range they are suitable for measurements on metals, ceramics, graphite etc. with tem-
perature ranges depending on the model execution between 300 and 3300°C (M3) or 350 and 3300°C (H3).
M3 models have a response time of < 1 ms, H3 high-speed models have a response time < 80 µs.
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 (depending on the country of
delivery); 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 connection
5
Keypad
6
Red LED display
(devices up to ca. 10/2020)
7
Yellow OLED display
(devices from ca. 10/2020)
8
LEDs to indicate system ready or
active switching outputs
9
Connectors for power supply, 2 linear analog
current outputs, a serial interface (M3: RS232 /
RS485 switchable; H3: RS485) and 3 configura-
ble inputs / outputs
10
Mounting rail
11
Mounting thread (M5) for front mounting the py-
rometer or accessory
12
Fiber optics with adjustable focus distance
13
Optical fiber for transporting the heat radiation to
the pyrometer
14
Tube to protect the optical fiber connection
15
Profibus / Profinet connectors
16
LEDs for monitoring the PB / PN activities
Differences in models with fiber optics:
12
11
13
3
4
5
6
8
9
10
2
Additionally at models with Profibus / Profinet:
14
15
1
11
7

METIS M311 / M322 / H311 / H322 (12-pin)
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4 Electrical Connection
4.1 Cable Colors and Pin Assignment (14 wire connection cables)
The electrical connection of the pyrometer (supply voltage and measuring signal) will be done via the connect-
or on the rear panel. For this purpose, pre-assembled connection cables are available as accessories (see 9.3
Accessories). To prevent accidental short circuits, not used cable wires need to be placed, for example to the
supplied screw terminals.
Power Supply
Analog output 1
Analog output 2
Configurable
Inputs / Outputs
1–3 1)
Configurable
Inputs / Outputs 2)
Shielding
1) Reference potential 0 V, brown
2) H3 models only RS485
|NOTICE|We generally recommend the use of the current 14-wire connection cables. Precaution when
using 12-wire connection cables that were delivered before 2015: Connection cable for the previous models
Metis and Sirius cannot be connected without restrictions on a M3 / H3 pyrometer!
Old connection cables are bridged in the cable connector to pins E-C and D-F. Connecting such a cable to a
M3 pyrometer, serial interface and analog output 2 and digital input / output 3 are connected and the galvanic
isolation between the outputs is bypassing. Thereby the pyrometer is not destroyed, but the functions are no
longer available. Using such a cable only analog output 1 is available as output.
Cable colors old Process
Sensors Corporation cable
Function
Pins
White
Power supply +24 V DC
K
E
DMH
J
L
C
BAK
FG
Connector pins
cable socket (solder side)
Brown
Power supply 0 V DC (ground)
A
Green
+ Analog output (0/4–20 mA)
L
Yellow
- Analog output (0/4–20 mA)
B
Grey
Targeting light, external switch (bridge to K)
H
Pink
Maximum value storage, external clearing (bridge to K)
J
Orange
Screen
M
Red
DGND (Ground for interface)
G
Black
RxD (RS232) or B1 (RS485)
F
Violet
TxD (RS232) or A1 (RS485)
C
Grey / pink
RxD (RS232) or B2 (RS485) (bridge to F)
D
Red / blue
TxD (RS232) or A2 (RS485) (bridge to C)
E

METIS M311 / M322 / H311 / H322 (12-pin)
10
M3 / H3
0 V
White
Brown
+24 V
4.1.1 Factory Settings
Parameters Factory Settings
Display ...................................................................... 2-color temperature
Temperature sub range ............................................ Corresponds to basic range
Response time t90 ..................................................... Min (corresponds to: M3: <1 ms; H3: <80 µs)
Emissivity slope ........................................................ 1.000
Switch-off limit........................................................... 10%, hysteresis: 2%
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......................................................... 4–20 mA, output temperature: no temperature output
Digital input / output 1 ............................................... set to input: external switching on / off targeting light
Digital input / output 2 ............................................... set to input: maximum value storage external clearing
Digital input / output 3 / Analog in ............................. set to input: no function
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
With integrated PID controller:
Analog output 2 ..................0-20 mA, output set to
control output
Digital input / output 2.........Digital input: controller start
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 power: 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 7.3.2.4).
With integrated Profibus-DP / Profinet:
Field bus mode: ................................... Fixed standard format M3 series
Address................................................ 126 (delivery address)
4.1.2 Power Supply
With connection to the supply voltage (standard 24 V DC, possible range 18–30 V) the
unit is ready for operation with the factory settings.
By connecting the power supply, the current firmware version is displayed for a few
seconds.
Interrupt the power supply to turn off the pyrometer, e.g. by disconnecting the connect

METIS M311 / M322 / H311 / H322 (12-pin)
11
Max. 50 mA
0 V
M3 / H3
Output
+24 V
100 kΩ
White
Grey
Pink
Blue
Brown
0 V
M3 / H3
0...20 mA
4...20 mA
A
0...20 mA
4...20 mA
A
+IOUT1
-IOUT1
+IOUT2
-IOUT2
Green (+)
Yellow (-)
Brown-green (-)
White-green (+)
The outputs are galvanically
isolated from the supply voltage.
4.1.3 Analog Output 1 and 2
2 analog outputs are available (e.g. for a temperature display device):
adjustable to 0–20 mA or 4–20 mA
Analog output 1 always provides the measured temperature (always
the temperature displayed on the device display or the software con-
trol window in SensorTools, see also 7.3.1 Control window).
Analog output 2 can be assigned to provide different signals:
- Measured temperature (always the temperature selected and dis-
played on the device display and the software control window; also
see 7.2 and 7.3.1 in SensorTools).
- Device temperature
- Control output (= manipulated variable) when equipped with PID
controller
|INFO| on older models: If the same settings are possible on analog output 1 as on analog output 2, the de-
vice has an older firmware version. A firmware update to the latest version eliminates this possibility and thus
prevents the analog output 1 from accidentally provide a different temperature signal than is displayed (Firm-
ware update see section 8).
4.1.4 Configurable Inputs / Outputs
3 ports are each available as:
Digital output: output of a switching signal (invertible, see under 7.3.2 
Various settings Logic NO / NC) at:
- Limit switch when a certain temperature threshold is exceeded or fall-
ing below
- Material detection (only M3): turns on when exceeding the beginning of
temperature range
- Device ready to operate (device ready and error-free after self-test)
Devices
with OLED
Devices
with LED
LED 4: Operating status:
Orange: self-test phase (M3 ca. 2 s; H3 during the initialization
and thermostatic phase for ≤ 3 min.)
Green: Pyrometer is ready for operation.
Red: a device error occurred (see 10.3 Trouble-Shooting).
Main display:
Measured temperature with temperature unit °C or °F.
Additional displays:
2C: 2-color temperature
C1: 1-color temperature channel 1
C2: 1-color temperature channel 2
Special displays:
––––Measuring temp. below beginning of temperature range
OVER Measuring temperature above end of temp. range
Device display set to „Suppressed“ in section 7.3.2):
––––––––––devices with LED display
No display devices with OLED display
Device menu / parameters (see 6.2)
Focus distance (displayed briefly) at devices with a motorized
focus optics when the arrow keys are pressed.
LEDs 1, 2, 3 (active digital
outputs):
Green: shows activated digital
outputs (see 4.1.4 configura-
ble inputs / outputs).

METIS M311 / M322 / H311 / H322 (12-pin)
12
- Exceeding the maximum allowed internal device temperature
- When equipped with PID controller: controller activity, control within definable setpoint limits, con-
trol completed successfully, hold time finished.
Digital input: A voltage pulse of 24 V (exception: contin-
uous voltage at "Activate controller"), pulse length adjust-
able via software (minimum 3 ms, factory settings 100
ms) under 7.3.2 Configurable Inputs / Outputs 
debounce time enables:
- Clearing the peak picker (see 6.2.2)
- Start controller (devices with PID controller, see
7.3.3).
- Activate controller: The control process is activated
as long as voltage at the terminal is present.
- Load pyrometer configuration (devices with PID con-
troller also control parameters) (see under 7.3.2 Configurable Inputs / Outputs “parameter selec-
tor” or 7.3.5 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. Adjusta-
ble via software under 7.3.2 Device Settings Laser targeting light settings).
|CAUTION |Laser radiation, laser class 2, do not look into the beam.
|SAFETY INSTRUCTIONS|
Never look into the direct or reflected laser beam.
Do not point the laser to anyone.
If laser radiation hits the eye, avert one's eyes immediately.
Analog input (only M3 and only on input/output 3):About a 0–20 mA
current source, some parameters can be adjusted externally between
their smallest and largest setting value (settings via SensorTools soft-
ware Configurable Inputs / Outputs Analog input):
- Emissivity slope (0 mA = 0.8; 20 mA = 1.2)
- Emissivity for every channel (0 mA = 0.05; 20 mA = 1.2)
- Setpoint at devices with PID controller (0 mA = zero scale tempera-
ture, 20 mA = full scale temp.)
- Measuring distance at M3 devices with motorized focus (0 mA = shortest distance, 20 mA = widest dis-
tance)
4.1.5 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 example 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 transmis-
sion speed (in Baud) is limited by the cable length, it is halved with each doubling of the transmission path.
RS232: about 7 m cable length with 19.2 kBd. 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 master
(computer receiving the data), the pyrometer is connect-
ed directly as a point-to-point connection with the master.
It is advantageous to connect all interface cables in order
to avoid reflections.
RxD
TxD
GND
Pin 2
Pin 3
Pin 5
A (-)
B (+)
GND
RS485
(Master /
PC)
A (-) Red-blue
B (+) Black
B (+) Grey-pink
A (-) Violet
DGND Red
TxD Red-blue
RxD Black
RxD Grey-pink
TxD Violet
DGND Red
RS232 (PC)
Pyrometer
Pyrometer
Setpoint input
via external
0...20 mA
0 V
Current source
M3
Blue
Brown
≤300 Ω
M3 / H3
>10 kOhm
0 V
+24 V
Input 1-3
Push
button
0 V
+24 V
White
Grey
Pink
Blue
Brown
Note: The input is safely detected as “high” at a voltage
> 15.5 V and safely detected as “low” at a voltage < 3.0 V.

METIS M311 / M322 / H311 / H322 (12-pin)
13
Connecting several pyrometers via RS485:
For a reflection-free operation with longer cables, pay attention to the correct cable termination. Termination at
the physical bus is on front and rear.
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). After 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).
4.1.5.1 Interface Converter (Accessory)
A quick and easy way to connect the pyrome-
ter with a PC is to use an interface converter
or a connecting cable with integrated interface
converter (see 9.3 Accessories). Depending
on the operating system, suitable drivers are
installed automatically or can be found on the
CD supplied with the software SensorTools in
the directory Drivers FTDI_USB_COM, or
after installing SensorTools in the installation directory (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 latency time in the advanced
port settings from 16 ms to 1 ms:
Cable colors
Metis M3 / H3
(12-pin connector)
Cable colors
interface converter
RS232USB (TxD / RxD)
RS485USB (A‾ / B+)
Red (GND)

Black (GND)
Grey-pink / black (B+/ RxD)

Orange (B+/ TxD)
Red-blue / violet (A‾ / TxD)

Yellow (A‾ / RxD)
2.
3.
1.
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
Master in
the middle:
Master
A (-)
B (+)
DGND
120 Ω
Terminating
resistor 120 Ω
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
Master at
the beginning:

METIS M311 / M322 / H311 / H322 (12-pin)
14
Open Device Manager (Windows 10: Right-click on the Windows key and select "Device Manager" in the
menu.
Windows 7: Open Control Panel and select Device Manager).
1. Double click on "Ports (COM and LPT)" USB Serial Port (COMx) of the interface converter.
2. Select the tab "Port settings" and then click on "Advanced".
Set the waiting time to 1 ms (in "BM Options").
More information is available in the FTDI application note AN_107 - Advanced Driver Options.
4.1.6 Shielding
Orange: To meet the requirements for electromagnetic compatibility (EMC), only shielded cables should be
used. The shield of our connection cable is connected to the pyrometer side in the plug housing, on side of the
connecting wires (voltage source) it remains open to prevent ground loops.
4.1.7 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 9.3 Accessories.
cable connector: type FE.0S.302.CLAC50
Fa. Lemosa GmbH, http://www.lemo.de)
Pin
Output
1
FBAS signal
2
Ground
2
1

METIS M311 / M322 / H311 / H322 (12-pin)
15
4.2 Devices with additional Profibus-DP or Profinet connection
The Profibus or Profinet interface is used for the digital communication of one or more pyrometers with a PLC.
It is available in addition to the serial RS232 or RS485 interface.
The connection is made in accordance with the applicable bus specifications.
The maximum possible transmission speed is limited by the cable length:
Profibus: 9.6–93.75kb/s 1200 m up to 3-12Mb/s 100m
Profinet: According to Ethernet standard (Cat5 / Cat6 cable) 100 m
|INFO| for setting the data to be transmitted: 3 different transmission modes are available to receive the da-
ta packets. A fixed M3 standard mode (factory setting), a backward compatible to old Metis devices and a vari-
able format in which the data to be transmitted can be selected.
The modes can be selected on the device menu or via SensorTools software. The variable format must be
configured via SensorTools (settings under Device configuration Field bus mode, also see 7.3.4).
For the typical connection in succession, there are 2
connections on each device as input and output.
General Station Discription (GSD): The enclosed CD
contains a device description file that must be integrat-
ed into the configuration of the master (PLC).
Profibus devices: SENSORTHERM_HMSA1815.gsd
Profinet devices (for mode 0 or mode 1 and 2 each in one folder on the CD):
GSDML-V2.32-HMS Industrial Networks-Anybus CompactCom 40 PIR-20180424.xml
|INFO|about the GSD file of old Metis Profibus devices: If old Metis devices are replaced by new Metis 3
devices, the correct GSD file must also be included.
Pin assignment Profibus-DP
Profibus terminating resistor: If no
other Profibus device is connected to the
output, the output must be terminated
with resistors. The terminating resistor
plug AK81 is used for this purpose (ac-
cessory, see 9.3). The internal wiring is
shown on the right.
Pin assignment Profinet
1) TD+
3) RD+
6) RD-
1
2
3
4
5
6
7
8
2) TD-
RJ45 plug
M12 female
connectors,
8-pin
2) TDB-
3) RDB+
4) RDB-
1) TDB+
1) TDA+
2) TDA-
3) RDA+
4) RDA-
4) Profibus cable B (red)
3+1) Not used
5) Schirm
2) Profibus cable A (green)
Input Profibus
Output Profibus
4) Profibus cable B (red)
3) GND Bus
5) Shield
2) Profibus cable A (green)
1) +5 V Bus
M12 connector, M12-female
connector,
5-pin
Profibus-DP
(Slave)
Input
Output
Profinet
Input / output
+5 V (Pin 1)
A (Pin 2)
B (Pin 4)
GND (Pin 3)
Terminating resistor AK81
(internal wiring)
390
220
0.25 W each
390

METIS M311 / M322 / H311 / H322 (12-pin)
16
4.2.1 Status LEDs for devices with Profibus / Profinet
Operation mode LED
Meaning
Off
Not online / no power
Green
Online, data exchange
Flashing green
Online, clear
Flashing red (1 flash)
Parameterization error
Flashing red (2 flashes)
Configuration error
Module status LED
Meaning
Off
Not initialized
Green
Initialized
Flashing green
Initialized, diagnostic
event(s) present
Red
Exception error
Module status LED
Meaning
Off
Not Initialized
Green
Normal operation
Green, 1 flash
Diagnostic event(s)
Red
Exception error
Red (combined with a
red network status LED)
Fatal event
Alternating red / green
Firmware update
Network status LED
Meaning
Off
Offline
Green
Online (run)
Green, 1 flash
Online (stop)
Green, blinking
Blink
Red (combined with a
red module status LED)
Fatal event
Red, 1 flash
Station name error
Red, 2 flashes
IP address error
Red, 3 flashes
Configuration error
Link / activity LEDs
Meaning
Off
No link
Green
Link
Green, flickering
Activity
5 Mechanical Installation
5.1 Mounting
The mounting rail on the bottom case is for the stable take-up of for example
of a ball and socket mounting (for fiber optics devices a mounting angle is rec-
ommended, see 9.3 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 adapt-
er/holder of motor focus and fixed focus devices.
Note that the installation of the pyrometer is free of vibrations, if necessary,
helps the use of rubber absorbers when mounting.
To keep the optical fiber ready for use as long as possible, it should be ex-
posed 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.
Profinet devices
Profibus devices
Not used
Operation mode
Modul status
Not used
Module status
Network status
Link / activity LED for A
Link / activity LED for B
A
B
Example: Metis with
swivel mounting base,
cooling plate and air
purge

METIS M311 / M322 / H311 / H322 (12-pin)
17
|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 (only devices with optical fiber)
5.2.1 Bending Radius Optical Fiber
The color code on the optical fiber
identifies the optic diameter and
minimum bending radius associat-
ed.
Observe the minimum bending radi-
us when laying the optical fiber. A bending radius smaller than the specified can result in a stretched or broken
optical fiber.
5.2.2 Winding and Unwinding the Optical Fiber
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 carefully, while the
other hand guides the cable roll. For torsion-free winding only one side of the opti-
cal fiber should be connected, than the other can be moved freely.
|NOTICE|Avoid strong tensile and torsional forces during installation, optical
fiber could break.
5.2.3 Mounting the Optical Fiber
Assignment fiber to pyrometer and optics: Each fiber is uniquely associated to a pyrometer and optics. For
identification, all three
components are tagged
with the same device
number. The measure-
ment accuracy can only be
guaranteed with proper
assignment.
|INFO| To meet the high accuracy, the instrument should be recalibrated when replacing an optics or the fiber
optic cable.
|NOTICE|Remove the protective caps from the pyrometer and optics and fiber just before installation
to keep the connectors clean and to prevent the ingress of dirt.
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:
Color code
of the optical fiber
Fiber
diameter
Minimum
bending radius
Minimum
bending diameter
Blue
0.4 mm
150 mm / 5.9″
300 mm / 111.8″
Red
0.2 mm
75 mm / 2,95″
150 mm / 5.9″
Connector pyrometer’s side (turn protected)
Connector optics side
Color mark

METIS M311 / M322 / H311 / H322 (12-pin)
18
The colored heat shrink tube marker matches to the py-
rometer side.
The optics fit on the side without marking
Unscrew the light guide protective tube from the pyrom-
eter’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 protected 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 hous-
ing.
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, otherwise the
screw or optical fiber can be damaged).
5.3 Ambient Temperature
M311 and M322 pyrometers are designed for ambient temperatures between 0 and 80°C / 32 and 176°F.
H3 models for ambient temperatures between 0 and 60°C / 32 and 140°F.
Fiber optic devices can be exposed on optics and optical fiber to ambient temperatures between -20 and
250°C / -4 and 482°F without cooling, for the housing the same temperatures apply as for standard devices
(0 to 80°C / 32 and 176°F).
|INFO| to avoid overheating of the laser targeting light or camera module:
The laser targeting light is deactivated at an internal device temperature above 65°C / 149°F (M3 devices) or
above 60°C / 140°F (H3 devices).
The camera module is deactivated at an internal device temperature above 55°C / 131°F.
|INFO| to avoid premature aging of the OLED display:
If no key is pressed for 10 minutes, the OLED display is darkened.
The OLED display is darkened from an internal device temperature of 60°C / 140°F.
The OLED display is switched off from an internal device temperature of 75°C / 167°F
Below these temperatures, the sighting can be used again or the OLED works with its full brightness.
Operation outside this temperature leads to incorrect measurements and may damage the device.
To comply with the permitted ambient temperature, sufficient distance from the (hot) measuring object is to ob-
serve. With radiant heat from the front, the pyrometer can be protected by a cooling plate, the use of the py-
rometer in ambient temperatures outside the permissible pyrometer ambient temperature is possible with an
additional cooling housing (accessory).
The internal housing temperature can be read out via the SensorTools
software (see 7.1).
It is also possible to configure one of the digital (switching) outputs in
such a way that a corresponding signal is switched if exceeding the
maximum temperature (see 4.1.4 Configurable Inputs / Outputs and
under 7.3.2.1 Configurable Inputs / Outputs).
Recess
Pin
Lock nut
Opt. fiber
Protective tube
Color mark
DT: internal de-
vice temperature
via software

METIS M311 / M322 / H311 / H322 (12-pin)
19
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 radia-
tion 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 6.2.1 Emissivity slope).
To detect the temperature correctly, the pyrometer must
be properly aligned to the measuring object. In the fo-
cus point of the optics (focus distance) the spot size di-
ameter is the smallest. Also measurements in the defo-
cused area can be done to determine the average tem-
perature of a bigger spot.
To get a correct measurement result, the following re-
quirements must be observed:
For measurements through window, the window ma-
terial has to be observed. If the transmission proper-
ties are not uniform (e.g. quartz glass), the corresponding emissivity slope has to be entered.
A viewing window between pyrometer and the measured object must have constant transmission properties
in the spectral range of the pyrometer (e.g. quartz glass or BK7 crown glass).
The distance to the measured object must be in the range of
focusable measurement distance of the optics, if a precise
measurement is to be made.
If the target is smaller than the spot size diameter, a warm
background temperature effects the measurement. But this
effect is not below about 300°C.
If the target is smaller than the spot size, less signal strength
arises to the pyrometer. If this falls below 2%, a measurement
is no longer possible (see 6.2.4 Switch-off Level / Signal Strength).
Entering a fill factor that indicates how much percent of the measuring field is filled, has no influence if using
the 2-color measuring mode. In 1-color mode measurements can be performed of measuring objects that
are smaller than the spot size. Requirement is a cold background temperature, otherwise background tem-
perature 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.
|CAUTION |Laser radiation, laser class 2, do not look into the beam.
|SAFETY INSTRUCTIONS|
Never look into the direct or reflected laser beam.
Do not point the laser to anyone.
If laser radiation hits the eye, avert one's eyes immediately.
Focus point
Spot size bigger
Spot size smaller than measuring object
Measuring object
Pyrometer’s spot size bigger than measur-
ing object, note background radiation.
Focus point
Spot size bigger

METIS M311 / M322 / H311 / H322 (12-pin)
20
Turn on / off: Via the targeting light button on rear panel or via software Sensor-
Tools (see 7.3.1,Control window).
(The targeting light will automatically switched off after 3 minutes if it is not
switched off manually. Adjustable via software under 7.3.2 Device Settings 
Laser targeting light settings)
|INFO| The laser targeting light is turned off at a device temperature above
65°C / 149°F (M3 devices) or 60°C / 140°F (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 value, the laser will work again.
|INFO| to the spot size: 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).
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 spot size tables (see 5.6).
|CAUTION |at measurement temperatures above 1400°C / 2552°F, risk of eye damage.
|SAFETY INSTRUCTIONS|
Sight objects with temperatures above 1400°C / 2552°F only with the eyepiece darkened to protect the eyes
from glare at high radiation temperatures.
Before looking at the high temperatures, always first adjust the eyepiece by turning it to the darkest position.
5.4.3 Alignment with the Camera Module
Pyrometers with a color camera module provide a com-
posite video output that can be connected to a TV or
monitor or PC via converter. The pyrometer is focused
and aligned via a target circle on the TV screen.
About the field of view of approximately 3.6% x 2.7% of
the measured distance also the measurement events
can be observed. About the PC software, image over-
lays and camera settings can be configured (see under
7.3.1,Control window Camera Settings)
|INFO|about the target circle size: The size of the target circle does not match to the spot size, spot sizes
are given in the spot size tables (see 5.6).
|INFO| The camera module of M3 devices is turned off at a device temperature above 55°C / 131°F.
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.
Laser target-
ing button
Software
View finder
TV connector