LumaSense technologies IGAR 12-LO User manual

MANUAL
Series 12
ISR 12-LO •IGAR 12-LO IMPAC Pyrometer

Confidential Information
The material contained herein consists of information that is the property of LumaSense
Technologies and intended solely for use by the purchaser of the equipment described in this
manual. All specifications are subject to change without notice. Changes are made periodically
to the information in this publication, and these changes will be incorporated in new editions.
LumaSense Technologies prohibits the duplication of any portion of this manual or the use
thereof for any purpose other than the operation or maintenance of the equipment described
in this manual, without the express written permission of LumaSense Technologies.
Copyright
© LumaSense Technologies 2018. All rights reserved.
Trademarks
IMPAC is a trademark of LumaSense Technologies.
All other trademarks are trademarks, registered trademarks, and/or service marks of their
respective holders.
Service Centers
LumaSense Technologies, Inc.
North America
Sales & Service
Santa Clara, CA, USA
Ph: [phone]
Ph: [phone]
Fax: [phone]
LumaSense Technologies GmbH
Other Than North America
Sales & Support
Frankfurt, Germany
Ph: [phone]
Fax: [phone]
Global and Regional Centers
Our Headquarters
LumaSense Technologies, Inc.
Santa Clara, CA, USA
Ph: [phone]
Fax: [phone]
Americas, Australia, & Other Asia
LumaSense Technologies, Inc.
Santa Clara, CA, USA
Ph: [phone]
Fax: [phone]
Europe, Middle East, Africa
LumaSense Technologies GmbH
Frankfurt, Germany
Ph: [phone]
Fax: [phone]
France
LumaSense Technologies Sarl
Erstein, France
Ph: [phone]
Fax: [phone]
India
LumaSense Technologies, India
Mumbai, India
Ph: + 91 22 67419203
Fax: +
91 22 67419201
China
LumaSense Technologies, China
Shanghai, China
Ph: [phone]
Ph: [phone]
E-mail
[email protected]
[email protected]om
[email protected]
Website
http://www.lumasenseinc.com
Part No 3855217-EN
Revision E
August 2018

ISR 12-LO •IGAR 12-LO Operating Manual Contents •iii
Contents
1General............................................................................................................................. 5
1.1 Information about the user manual...................................................................... 5
1.1.1 Legend......................................................................................................................5
1.1.2 Terminology .............................................................................................................5
1.2 Safety ....................................................................................................................... 5
1.2.1 Laser targeting light ................................................................................................6
1.2.2 Electrical connection................................................................................................6
1.3 Limit of liability and warranty .............................................................................. 6
1.4 Unpacking the Instrument...................................................................................... 7
1.5 Service Request, Repair, or Support...................................................................... 7
1.6 Shipments to LumaSense for Repair ..................................................................... 7
1.7 Transport, packaging, storage ............................................................................... 8
1.8 Disposal / decommissioning................................................................................... 8
2Introduction..................................................................................................................... 9
2.1 Appropriate use ...................................................................................................... 9
2.2 Scope of delivery .................................................................................................... 9
2.3 Technical data.......................................................................................................... 9
2.4 Dimensions ............................................................................................................ 11
2.5 Physical User Interface.......................................................................................... 12
2.6 Accessories (Optional) .......................................................................................... 12
3Controls and Connections ............................................................................................ 15
3.1 Electrical Installation ............................................................................................ 15
3.2 Pin assignment of the male socket on the back of the pyrometer .................. 15
3.2.1 Connector pin J ......................................................................................................16
3.3 Connecting the pyrometer to a PC ...................................................................... 17
3.3.1 Connecting to RS232 interface .............................................................................17
3.3.2 Connecting to RS485 interface / baudrate...........................................................17
3.3.3 Connection of additional analyzing devices........................................................18
3.3.4 Wait time tw...........................................................................................................18
3.4 Mechanical Installation ........................................................................................ 18
3.4.1 Pyrometer...............................................................................................................18
3.4.2 Fiber optic...............................................................................................................19
3.4.3 Optical head...........................................................................................................20
3.5 Optical head........................................................................................................... 20
3.5.1 Spot size data (measuring distance from the front of the lens) ........................20
3.5.2 Adjusting the required measuring distance with optical head Ιor ΙΙ, fixed
adjusted ..................................................................................................................21
3.5.3 Adjusting the required measuring distance with optical head ΙΙ, focusable ....21
3.6 Laser targeting light ............................................................................................. 22
4Settings / Parameter Descriptions................................................................................ 23
4.1 Factory settings..................................................................................................... 23
4.2 Instrument settings .............................................................................................. 23

ISR 12-LO •IGAR 12-LO Operating Manual Contents •iv
4.2.1 Key panel operation ..............................................................................................24
4.2.2 Special indications .................................................................................................25
4.3 Basic range............................................................................................................. 25
4.4 Material.................................................................................................................. 25
4.5 Temperature display in °C or °F ........................................................................... 25
4.6 Emissivity ε /emissivity slope K ........................................................................ 26
4.7 Response time / exposure time (t90) .................................................................... 27
4.8 Clear time of the maximum value storage (tCL) ................................................. 27
4.9 Operating mode .................................................................................................... 28
4.10 Switch-off level (OFF / %) ..................................................................................... 28
4.11 Analog Output....................................................................................................... 29
4.12 Setting of subrange (from / to)............................................................................ 29
4.13 Address .................................................................................................................. 29
4.14 Baud rate (kBaud) ................................................................................................. 29
5Software InfraWin......................................................................................................... 31
5.1 Connecting the pyrometer to a PC ...................................................................... 31
5.2 Installation ............................................................................................................ 31
5.3 Program start ........................................................................................................ 31
6Maintenance .................................................................................................................. 33
6.1 Safety ..................................................................................................................... 33
6.2 Service.................................................................................................................... 33
6.3 Changing of optics ................................................................................................ 33
7Data format UPP (Universal Pyrometer Protocol)....................................................... 35
8Reference numbers ....................................................................................................... 39
8.1 Reference numbers instrument ........................................................................... 39
8.2 Reference numbers accessories ........................................................................... 39
9Troubleshooting ............................................................................................................ 41
Index..................................................................................................................................... 43

ISR 12-LO •IGAR 12-LO Operating Manual General •5
1General
1.1 Information about the user manual
Congratulations on choosing the high quality and highly efficient IMPAC pyrometer.
This manual provides important information about the instrument and can be used as a work of
reference for installing, operating, and maintaining your IMPAC pyrometer. It is important that
you carefully read the information contained in this manual and follow all safety procedures
before you install or operate the instrument.
To avoid handling errors, keep this manual in a location where it will be readily accessible.
1.1.1 Legend
Note: The note symbol indicates tips and useful information in this manual. All notes
should be read to effectively operate the instrument.
Attention: Security note laser beam: Indicates to the danger of a built-in laser
targeting light.
Warnings and Cautions: The general warnings and cautions symbol signifies the
potential for bodily harm or damage to equipment.
MB Shortcut for Temperature range (in German: Messbereich).
1.1.2 Terminology
The terminology used in this manual corresponds to the VDI- / VDE-directives 3511, Part 4.
1.2 Safety
This manual provides important information on safely installing and operating the IMPAC
pyrometer. Several sections of this manual provide safety warnings to avert danger. These safety
warnings are specified with a warning symbol. You must read and understand the contents of
this manual before operating the instrument even if you have used similar instruments or have
already been trained by the manufacturer.
It is also important to continually pay attention to all labels and markings on the instrument and
to keep the labels and markings in a permanent readable condition.
Warning: The pyrometer is only to be used as described in this manual. It is
recommended that you only use accessories provided by the manufacturer.
In addition, signs and markings on the device are to be observed and maintained in legible
condition.

ISR 12-LO •IGAR 12-LO Operating Manual General •6
1.2.1 Laser targeting light
For easy alignment to the measuring object the pyrometers can be equipped with a laser
targeting light. This is a visible red light with a wavelength between 630 and 680 nm and a
maximum power of 1 mW. The laser is classified as product of laser class II.
Warning: To reduce the risk of injury to the eyes, do not look directly
into the targeting laser and do not point the targeting laser
into anyone's eyes. The instrument is equipped with a class II
laser that emits radiation.
Safety regulations:
•Never look directly into the laser beam. The beam and spot can be watched safely from side.
•Make sure that the beam will not be reflected into eyes of persons by mirrors or shiny surfaces.
1.2.2 Electrical connection
Follow common safety regulations for mains voltage (e.g. 230 or 115 V AC) connecting
additional devices operating with this mains voltage (e.g. transformers). Touching mains voltage
can be mortal. A non-expert connection and mounting can cause serious health or material
damages.
Only qualified specialists are allowed to connect such devices to the mains voltage.
1.3 Limit of liability and warranty
All general information and notes for handling, maintenance, and cleaning of this instrument
are offered according to the best of our knowledge and experience.
LumaSense Technologies is not liable for any damages that arise from the use of any examples
or processes mentioned in this manual or in case the content of this document should be
incomplete or incorrect. LumaSense Technologies reserves the right to revise this document and
to make changes from time to time in the content hereof without obligation to notify any
person or persons of such revisions or changes.
All instruments from LumaSense Technologies have a regionally effective warranty period.
Please check our website at http://info.lumasenseinc.com/warranty for up-to-date warranty
information. This warranty covers manufacturing defects and faults, which arise during
operation, only if they are the result of defects caused by LumaSense Technologies.
The Windows compatible software was thoroughly tested on a wide range of Windows
operating systems and in several world languages. Nevertheless, there is always a possibility that
a Windows or PC configuration or some other unforeseen condition exists that would cause the
software not to run smoothly. The manufacturer assumes no responsibility or liability and will
not guarantee the performance of the software. Liability regarding any direct or indirect
damage caused by this software is excluded.
The warranty is VOID if the instrument is disassembled, tampered with, altered, or otherwise
damaged without prior written consent from LumaSense Technologies; or if considered by
LumaSense Technologies to be abused or used in abnormal conditions. There are no user-
serviceable components in the instrument.

ISR 12-LO •IGAR 12-LO Operating Manual General •7
1.4 Unpacking the Instrument
Thoroughly inspect the instrument upon delivery to purchaser. Check all materials in the
container against the enclosed packing list. LumaSense Technologies cannot be responsible for
shortages against the packing list unless a claim is immediately filed with the carrier. The
customer must complete final claim and negotiations with the carrier.
Save all packing materials, including the carrier’s identification codes, until you have inspected
the pyrometer and find that there is no obvious or hidden damage. Before shipment, the
pyrometer was examined and has been tested. If you note any damage or suspect damage,
immediately contact the carrier and LumaSense Technologies, Inc.
1.5 Service Request, Repair, or Support
Contact LumaSense Technologies Technical Support in case of a malfunction or service request.
Provide clearly stated details of the problem as well as the instrument model number and serial
number. Upon receipt of this information, Technical Support will attempt to locate the fault
and, if possible, solve the problem over the telephone.
If Technical Support concludes that the instrument must be returned to LumaSense Technologies
for repair, they will issue a Return Material Authorization (RMA) number.
Return the instrument upon receipt of the RMA number, transportation prepaid. Clearly
indicate the assigned RMA number on the shipping package exterior. Refer to Section 1.6,
Shipments to LumaSense for Repair, for shipping instructions.
Technical Support can be contacted by telephone or email:
Santa Clara, California
•Telephone: [phone] or [phone]
•Email: [email protected]
Frankfurt, Germany
•Telephone: [phone]
•Email: [email protected]
Erstein, France
•Telephone [phone]
•Email: [email protected]
1.6 Shipments to LumaSense for Repair
All RMA shipments of LumaSense Technologies instruments are to be prepaid and insured by
way of United Parcel Service (UPS) or preferred choice. For overseas customers, ship units air-
freight, priority one.
The instrument must be shipped in the original packing container or its equivalent. LumaSense
Technologies is not responsible for freight damage to instruments that are improperly packed.
Contact us to obtain an RMA number (if Technical Support has not already assigned one).
Clearly indicate the assigned RMA number on the shipping package exterior.

ISR 12-LO •IGAR 12-LO Operating Manual General •8
Send RMA Shipments to your nearest technical service center:
Customers in North America
should send RMA Shipments to:
Santa Clara, California
All other customers should
send RMA Shipments to:
Frankfurt, Germany
LumaSense Technologies, Inc.
3301 Leonard Court
Santa Clara, CA 95054 USA
Telephone: [phone]
[phone]
Email: [e-mail]
LumaSense Technologies GmbH
Kleyerstr. 90
60326 Frankfurt
Germany
Telephone: [phone]
Email: [email protected]
1.7 Transport, packaging, storage
With faulty shipping, the instrument can be damaged or destroyed. To transport or store the
instrument, please use the original box or a box padded with sufficient shock-absorbing
material. For storage in humid areas or shipment overseas, the device should be placed in
welded foil (ideally along with silica gel) to protect it from humidity.
The pyrometer is designed for a storage temperature of -20 to 70 °C with non-condensing
conditions. Storing the insturment out of these conditions can cause damage or result in
malfunction of the pyrometer.
1.8 Disposal / decommissioning
Inoperable IMPAC pyrometers must be disposed of in compliance with local regulations for
electro or electronic material.

ISR 12-LO •IGAR 12-LO Operating Manual Introduction •9
2Introduction
2.1 Appropriate use
The pyrometers ISR 12-LO and IGAR 12-LO are digital, highly accurate 2-color pyrometers with
fiber optic for non-contact temperature measurement on metals, ceramics, graphite etc.
between 300 and 3300 °C.
The pyrometers measures in the 2-color principle (ratio principle) in which two adjacent
wavelengths are used to calculate the temperature. This technique offers the following
advantages compared with the standard one-color pyrometers:
•The temperature measurement is independent of the emissivity of the object in wide
ranges.
•The measuring object can be smaller than the spot size.
•Measurements are unaffected by dust and other contaminants in the field of view or by
dirty viewing windows.
Additionally, the pyrometer can be switched to 1-color mode and used like a conventional
pyrometer.
The metal mode allows measurements of metals and alloys with unknown K-factor (emissivity
slope).
The instrument is equipped with an optical fiber (length up to 30 m), which can be used in very
high ambient temperatures up to 250 °C without cooling and it is unaffected by electromagnetic
interferences.
2.2 Scope of delivery
Pyrometer, optical fiber and optical head as per configuration, works certificate, PC software
InfraWin, and user manual.
Note: The connection cable is not included with the instrument and must be ordered
separately (see section 8,Reference numbers).
2.3 Technical data
Temperature ranges:
ISR 12-LO: MB 13: 600 … 1300 °C
MB 17: 450 … 1700 °C
MB 18: 750 … 1800 °C
MB 25: 900 … 2500 °C
MB 33: 1000 … 3300 °C
IGAR 12-LO: MB 10: 300 … 1000 °C
MB 13: 350 … 1300 °C
MB 22: 500 … 2200 °C
MB 25: 550 … 2500 °C
Sub range:
Any range adjustable within the temperature range
minimum span 51 °C
Signal processing:
Photoelectric current, digitized

ISR 12-LO •IGAR 12-LO Operating Manual Introduction •10
Spectral range:
ISR 12-LO:
λ
1: 0.8 µm/
λ
2: 1.05 µm
IGAR 12-LO: MB 10: λ1: 1.52 µm/λ2: 1.64 µm
All other MB: λ1: 1.28/λ22: 1.65 µm
Measuring modes:
Ratio- (2-color-) / mono- / metal mode switchable
Power supply:
24 V DC (15 to 40 V DC) or 24 V AC (12 to 30 V AC), 48 to 62Hz
Power consumption:
Max. 10 W
Analog output:
0 to 20 mA or 4 to 20 mA switchable, load 0 to 500 Ohm
Test current 10 mA by pressing test key
Load:
0 to 500 Ω
Switch contact:
Max. 0.15 A (only active with automatic clear mode or tCL ≥ 0.5 s)
Digital Interface:
Switchable: RS232 or RS485 addressable (half duplex),
baud rate 2.4 up to 115.2 kBd
Resolution:
Display: 1 °C
Interface: 0.1 °C
Analog output: < 0.025% of temperature range
Isolation:
Power supply, analog output and digital interface are galvanically isolated
from each other
Parameters:
Adjustable or readable at the device or via interface:
Emissivity ε, emissivity slope K, exposure time t90, clear times for maximum
value storage tCL, automatically or external deletion of maximum value
storage, switching measuring mode, switch-off limit, warning level dirty
window, 0 to 20 or 4 to 20 mA, sub range, address, baud rate, °C/°F
Readable at the device or via interface:
Measuring temperature
Adjustable only via interface commands:
Wait time tW, keyboard lock
Emissivity slope K:
ε
1
/ ε
2
: 0.8 to 1.2 adjustable in steps of 0.001
Emissivity ε:
0.1 to 1 adjustable in steps of 0.001
Exposure time t
90
:
2 ms (with dynamical adaptation at low signal levels),
adjustable at 0.01 s; 0.05 s; 0.25 s; 1 s; 3 s; 10 s
Maximum value storage:
Built-in single or double storage. Clearing with adjusted time t
clear
(0.00 s; 0.01 s; 0.05 s; 0.25 s; 1 s; 5 s; 25 s), extern, via interface or automatically
with the next measuring object
Uncertainty: *
(ε=1, t90=1 s, Tamb. = 23 °C)
ISR 12-LO: 0.4% of reading in °C + 1 °C (< 1500 °C)
0.6% of reading in °C + 1 °C (> 1500 °C)
IGAR 12-LO: 0.5% of reading in °C + 1 °C (< 1500 °C)
0.7% of reading in °C + 1 °C (> 1500 °C)
Repeatability: *
(
ε
=1, t90=1 s, Tamb.= 23 °C)
ISR 12-LO: 0.2% of reading in °C + 1 °C
IGAR 12-LO: 0.3% of reading in °C + 1 °C
*The temperature of fiber and optical head must be at least 30 °C lower than the measuring temperature to get a correct
temperature reading
Protection class:
IP65 (DIN 40 050)
Ambient temperature:
Converter housing: 0 to 60 °C (ISR 12-LO); 0 to 50 °C (IGAR 12-LO)
Storage temperature:
-20 to 70 °C
Rel. humidity:
Non-condensing conditions
Weight:
Converter: 2.2 kg; optical head II: 140 g; fiber (2.5 m): 250 g
Connector:
12 pin Connector

ISR 12-LO •IGAR 12-LO Operating Manual Introduction •11
Sighting:
Laser targeting light (max. power level < 1 mW,
λ= 630-680 nm, CDRH class II).
(With IGAR 12-LO measurements are possible while laser targeting light is
switched on, with ISR 12-LO measuring is stopped)
CE-label:
According to EU directives about electromagnetic immunity
Note: The determination of the technical data of this pyrometer is carried out in
accordance with VDI/VDE directive IEC TS 62942-2, “Determination of the technical data
for radiation thermometers”.
The calibration / adjustment of the instruments was carried out in accordance with
VDI/VDE directive “Temperature measurement in industry, Radiation thermometry,
Calibration of radiation thermometers”, VDI/VDE 3511, Part 4.4.
For additional details on this directive, see http://info.lumasenseinc.com/calibration or
order the directive from “Beuth Verlag GmbH” in D-10772 Berlin, Germany.
2.4 Dimensions
Pyrometer housing:
Optical heads:
Type I (small optics):
Type II (focusable optics):
Type II (fixed adjusted):
all dimensions in mm

ISR 12-LO •IGAR 12-LO Operating Manual Introduction •12
2.5 Physical User Interface
Pyrometer Interior view pyrometer housing
1Display for clear mode
2Display °C or °F
3LED display for temperature or parameters
4Display for measuring mode
5 Mounting screws for cover (4 units)
6Fiber optic
7Optical head
8Display
9Parameter indicator
10 Interface switch
11 Push button for test current
12 Setting keys
13 Electrical connection
14 Connection for fiber optic
15 Mounting holes
2.6 Accessories (Optional)
Numerous accessories guarantee easy installation of the pyrometer. The following overview
shows a selection of suitable accessories. You can find the entire accessory program with all
reference numbers in Chapter 8,Reference numbers.
Mounting:
For mounting and aligning the pyrometer to the
measured object mounting angles or a
ball and
socket mounting is available. The
ball and socket
mounting is an easy way to a
lign the pyrometer to
the measured object. The clamping-
screws of the ball
and socket mounting enable an easy and fast
adjustment of the pyrometer in all directions.
Mounting angle
Ball and socket mounting
9
8
13
14
15
10
11
12
1
2
3
4
6
7
5

ISR 12-LO •IGAR 12-LO Operating Manual Introduction •13
Air purge:
The air purge
protects the lens from contamination
with dust and moisture. It must
be supplied with dry
and oil-free pressurized air (1,5 m³ / h) and gener
ates
an air stream shaped like a cone.
Air purge
Displays:
Additionally, to the built-
in temperature indicator of
the pyrometer LumaS
ense offers several digital
displays which can also be used for remote
parametrizing of the pyrometer.
Digital display
DA 6000

ISR 12-LO • IGAR 12-LO Operating Manual Introduction •14
To ensure consistent document formatting, this page was intentionally left blank.

ISR 12-LO •IGAR 12-LO Operating Manual Controls and Connections •15
3Controls and Connections
3.1 Electrical Installation
The ISR 12-LO and the IGAR 12-LO are powered by a voltage of 24 V DC (15 to 40 V DC) or
24 V AC (12 to 30 V AC). As the instrument is operating with heated and thermostatically
controlled sensors, it needs a warm-up of up to 5 minutes (during this warm-up period the LED
display indicates “7777“), after that the instrument is ready for use. To switch off the
instrument, interrupt the power supply or unplug the electrical connector.
To meet the electromagnetic requirements (EMV), a shielded connecting cable must be used.
The shield of the connecting cable must be connected only on the pyrometer’s side. On side of
the power supply (switch board) the shield must be open to avoid ground loops.
LumaSense offers connecting cables; they are not part of standard scope of delivery. The main
connecting cable has wires for power supply, interface, analog output, external laser switch and
external clear of maximum value storage via contact (see section 8, Reference numbers) and
12 pin connector. The cable includes a short RS232 adapter cable with a 9 pin SUB-D connector
for direct PC communication. This adapter is not used in combination with RS485 interface.
3.2 Pin assignment of the male socket on the back of the
pyrometer
Pin Color Indication
K white + 24 V power supply (or 24 V AC)
A
brown
0 V power supply
L green
+ I
outp.
analog output
B yellow – Ioutp. analog output
H gray
External switch for targeting light (bridge to
K)
J pink
See 3.2.1: operating mode contact, external
clearing of maximum value storage (bridge
to K) or output for dirty window monitoring
G red DGND (Ground for interface)
F black RxD (RS232) or B1 (RS485)
C violet TxD (RS232) or A1 (RS485)
D gray/pink B2 (RS485) (bridge to F)
E red/blue A2 (RS485) (bridge to C)
M orange
Screen only for cable extension,
don’t connect at the switchboard
K
A
B
C
D
J
G
F
E
H
M
L
Connector
Pin assignment
(side of male inserts)

ISR 12-LO •IGAR 12-LO Operating Manual Controls and Connections •16
3.2.1 Connector pin J
The connector pin J can be used for 4 different functions:
1. Operating mode contact: During the warm-up of the pyrometer (after connection to
the power supply, the LED display on the converter indicates “7777”) pin J is connected
to the power supply voltage. This voltage is connected by a relays switch (max.
continuous current 0.4 A) to pin K (power supply voltage). This relays switch opens when
the warm-up is finished, and the pyrometer is in operating mode. For that reason, this
pin can be used as operating mode contact.
2. External clearing of the maximum value storage: When the pyrometer is in
operating mode, pin J can be used for external clearing of maximum value storage
(see section 4.8). To clear the maximum value storage, connect pin J for a short time to
pin K (power supply voltage).
The function “external clearing” is activated with the following conditions:
•Warm-up is finished (no display “7777“)
•The clear time is set to “extern“ (see section 4.8).
•The lens contamination monitoring is switched off. This can be done via software
InfraWin in “color-bar“ window. The warning level “dirty window” must be set to
0% (see section 4.1).
3. Hold function: When the hold function mode is activated the current temperature,
reading is frozen as long as J and pin K are connected (see 4.8 clear time for the
maximum value storage).
4. Lens contamination monitoring system: The pyrometers are equipped with a
contamination monitoring system. Contamination of lens or sighting window or dust in
the sighting path of the pyrometer can interfere the signal in such a high level that a
correct temperature measurement will be impossible (this can also happen if the object
is smaller than the spot size of the pyrometer). To avoid wrong measurements in
advance, a warning signal can be set to a certain contamination level. If contamination
reaches this level (or at a certain too low signal level), a built-in relay (max. continuous
current 0.4 A) connects pin J to pin K (power supply voltage). The setting of the switch
level (0 … 99%) can be done via software InfraWin in “color-bar“ window. If the
warning level “dirty window” is set to 0% (see section 4.1) the lens contamination
monitoring system is switched off and pin J has the function “external clearing” of
maximum value storage (factory setting).
The lens contamination monitoring system is activated with the following conditions:
•Warm-up is finished (no display “7777“)
•The clear time is not set to “extern“ (see sections 4.1 and 4.8).
•The pyrometer is operating in “2-color mode“ (see section 4.9)

ISR 12-LO •IGAR 12-LO Operating Manual Controls and Connections •17
3.3 Connecting the pyrometer to a PC
The pyrometers are equipped with a serial interface RS232 or RS485 (switchable at the
pyrometer). Standard on a PC is the RS232 interface. At this interface one pyrometer can be
connected if the interface is set to RS232. Only short distances can be transmitted with RS232
and electromagnetic interferences can affect the transmission.
With RS485 the transmission is to a large extend free of problems, long transmission distances
can be realized, and several pyrometers can be connected in a bus system. If RS485 is not
available at the PC, it can be realized with an external converter which converts the RS485 in
RS232 for a standard connection to a PC.
When using a converter RS485 / RS232 take care, that the converter is fast enough to receive the
pyrometer’s answer to an instruction of the master. Most of the commonly used converters are
too slow for fast measuring equipment. So, it is recommended to use the LumaSense converter
(order no. 3 852 430).
With a slow RS485 connection it is also possible to set a wait time at the pyrometer which delay
the response of a command to the pyrometer (see 3.4.3 Wait time).
3.3.1 Connecting to RS232 interface
The transmission rate (in baud) of
the serial interface is dependent on
the length of the cable. Values
between 2400 and 115200 Bd may
be set.
The baud rate must be reduced by
50% when the transmission
distance is doubled (see also
4.14 Baud rate).
Typical cable length for RS232 at
19200 Bd is 7 m.
PC’s side
(soldering side)
K
A
B
C
D
J
G
F
E
H
M
L
1
2
3
4
5
6
7
8
9
DGND (red)
RxD (black)
TxD (violet)
Pyrometer’s side
(soldering side)
3.3.2 Connecting to RS485 interface / baudrate
Half-duplex mode:
A1 and A2 as well as B1 and B2 are
bridged in the 12-pin round connector
of the connecting cable, to prevent
reflections due to long stubs. It also
safeguards against the interruption of
the RS485 Bus system should a
connecting plug be pulled out. The
master labels mark the connections on
the RS485 converter. The transmission
rate of the serial interface in Baud (Bd)
is dependent on the length of the
cable. Values between 1200 and
115 kBd may be set.
The baud rate is reduced by 50% when
the transmission distance is doubled (see
4.14 Baud rate). Typical cable length
for 19200 Bd is 2 km.
Terminator 120 Ohm
A
B
S
K
A
B
C
D
J
G
F
E
H
M
L
K
A
B
C
D
J
G
F
E
H
M
L
K
A
B
C
D
J
G
F
E
H
M
L
DGND
B1
A2
B2
A1
DGND
B1
A2
B2
A1
DGND
A2
B2
A1
B1
Master
Pyrometer 32
e.g. address 31
Pyrometer 2
e.g. address 01
Pyrometer 1
e.g. address 00

ISR 12-LO •IGAR 12-LO Operating Manual Controls and Connections •18
3.3.3 Connection of additional analyzing devices
Additional analyzing
instruments, for example a
LED digital display instrument
only needs to be connected
to a power supply and the
analog outputs from the
pyrometer. Other instruments
like a controller or printer
can be connected to the
display in series as shown
above (total load of
resistance max.
500 Ohm).
yellow
LED digital display
Controller
Power supply
green
brown
white
230 V ~
24 V DC
°C
Printer
3.3.4 Wait time tw
Using a pyrometer with RS485 it is possible that the connection is not fast
enough to receive the pyrometer’s answer to an instruction of the master. In
this case a wait time can be set to slow down the data transfer (e.g.: tw= 02
at a baud rate 9600 means a wait time of 2/9600 sec).
Note: Only available via interface commands, see 7, Data format UPP.
3.4 Mechanical Installation
3.4.1 Pyrometer
To fix the converter, 4 drill holes for
screws with 4 mm diameter are
visible after removing the cover.
For fixing the optical heads different
mounting supports are available (see
2.6 Accessories (Optional)).
Settings:
00 Bit
.
.
.
99 Bit
Drill holes
cover

ISR 12-LO •IGAR 12-LO Operating Manual Controls and Connections •19
3.4.2 Fiber optic
The fiber has a blue or red mark for
correct connection to the pyrometer.
The color mark must be mounted on
the pyrometer’s side.
The fiber optic is equipped with a
special connector which allows it to
fix the fiber only in one position.
Please notice that the connector of
the fiber with the pin is fixed in the
correct position before plug and
socket can be bold together.
Note: The light guide end of the fiber optic cable as well as the socket/connector and
the optical head must always be protected with the caps when not connected.
Ambient temperature
The fiber and optical head can withstand ambient temperatures up to 250 °C without cooling on
the side of the optical head.
Serial number / fiber replacement
The original fiber has a serial number which is also on the pyrometer’s housing. If required, the
fiber can be replaced by a new original IMPAC-brand fiber. In this case, the pyrometer has to be
calibrated together with the fiber (service).
The original fiber has a serial number which is also
on the pyrometer’s housing.
If required, the fiber can be replaced by a new
original IMPAC fiber. In this case the pyrometer
must be calibrated together with the fiber
(service).
Minimum Bending Radius
ISR 12-LO: MB 13;
IGAR 12-LO: MB 10
(blue mark)
ISR 12-LO: MB 18, 25, 33; IGAR
12-LO: MB 13, 17, 22, 25
(red mark)
Short time (max. 200 °C)
100 mm
50 mm
Permanent (max. 200 °C)
300 mm
120 mm
Attention: A hot fiber optic cable should not be exposed to continual movement!
Fibre
Screw connection
Pin
Cut-out
Red or blue mark

ISR 12-LO •IGAR 12-LO Operating Manual Controls and Connections •20
3.4.3 Optical head
The FSMA connector on the side of the
optical head doesn’t need a special
justification if bold together.
3.5 Optical head
Depending on the application, the instrument will be delivered with a small or a big optical
head.
Type
Ι
(small optical head): With the very small dimensions the
optical head I is suited for use in confined spaces. The optics is adjusted
to one of the measuring distances mentioned in the table 3.5.1. The
mentioned spot size will be achieved in exactly this distance (other
distances on request).
Type
ΙΙ
(optical head, focusable): With the focusable optical head II
each measuring distance can be adjusted within the mentioned limits
to achieve the smallest spot size in the required distance. The spot size
at the shortest and longest distance is mentioned in the following
table 3.5.1 Spot sizes at intermediate distances must be calculated by
interpolation.
Type
ΙΙ
(optical head, fixed adjusted): The fixed adjusted optical
head II has a similar size as the focusable optical head but with a fixed
focusing distance similar to type I (see table 3.5.1).
Note: The optical heads can be changed against another from the same type.
A recalibration of the pyrometer is not necessary.
3.5.1 Spot size data (measuring distance from the front of the lens)
Optical
head
Meas.
Distance
a (mm)
Spot size
ISR 12-LO: MB 13
IGAR 12-LO: MB 10
M [mm]
Spot size
ISR 12-LO: MB 18, 25, 33
IGAR 12-LO: MB 13, 17, 22, 25
M [mm]
Aperture
D (mm)*
Type I
(small
optics)
120
2.2
1.2
7
260
5
2.6
7
700
14
7.2
7
Type II
(focusable
optics)
88 to 110
0.8 to 1.1
0.45 to 0.6
17
95 to 129
0.9 to 1.3
0.5 to 0.75
16
105 to 161
1.1 to 1.7
0.6 to 1.0
15
200 to 346
1.5 to 2.8
0.8 to 1.5
17
247 to 606
2.0 to 5.2
1.1 to 2.7
16
340 to 4500
2.8 to 42
1.5 to 22
15
Type II
(fixed
adjusted)
87
0.75
0.45
17
200
1.5
0.8
17
600
5.3
2.7
15
4500
42
22
15
Color mark of fiber Blue Red