LumaSense IMPAC IGA 140/23 User manual

OPERATION MANUAL
IMPAC Pyrometer
IGA 140/23

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 2016. 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
3301 Leonard Court
Santa Clara, CA, 95054
Ph: [phone]
Ph: [phone]
Fax: [phone]
LumaSense Technologies GmbH
Other Than North America
Sales & Support
Kleyerstrasse 90
60326 Frankfurt, Germany
Ph: [phone]
Fax: [phone]
Global and Regional Centers
Our Headquarters
LumaSense Technologies, Inc.
3301 Leonard Court
Santa Clara, CA, 95054
Ph: [phone]
Fax: [phone]
Americas, Australia, & Other Asia
LumaSense Technologies, Inc.
3301 Leonard Court
Santa Clara, CA, 95054
Ph: [phone]
Fax: [phone]
Europe, Middle East, Africa
LumaSense Technologies GmbH
Kleyerstrasse 90
60326 Frankfurt, Germany
Ph: [phone]
Fax: [phone]
Brazil
LumaSense, Vendas Brasil
Rua Ataliba Camargo Andrade,
172/sl 112
Campinas, SP – 13025-290
Brasil
Ph: [phone]
Fax: [phone]
India
LumaSense Technologies, India
514, A Wing, Sagar Tech Plaza,
Sakinaka Junction,
Andheri Kurla Road
Andheri East, Mumbai 400072
India
Ph: + 91 22 67419203
Fax: + 91 22 67419201
China
LumaSense Technologies, China
Rm 1004,
No. 1607 South Pudong Rd
Pudong New Area
Shanghai, 200122
China
Ph: [phone]
Fax: [phone]
E-mail [e-mail]
[e-mail]
[e-mail]
Website http://www.lumasenseinc.com
Part No 3 911 009-EN
Revision A
April 2016

IGA 140/23 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 Malfunction or Service Request............................................................................7
1.6 Shipments to LumaSense for Repair ....................................................................8
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 ........................................................................................11
2.6 Accessories (option) ............................................................................................ 12
3Controls and Installation ............................................................................................ 15
3.1 Electrical Installation ..........................................................................................15
3.1.1 Pin assignment of the connector....................................................................... 15
3.1.2 Connecting the pyrometer to a PC....................................................................16
3.1.3 Connection of Additional Analyzing Devices.................................................... 17
3.2 Mechanical Installation....................................................................................... 17
3.3 Sighting................................................................................................................ 17
3.3.1 Thru-lens view finder ........................................................................................17
3.3.2 Laser targeting light..........................................................................................17
3.4 Optics ...................................................................................................................18
3.4.1 Measuring Distance...........................................................................................18
3.4.2 Adjusting the required measuring distance......................................................19
4Instrument Settings .................................................................................................... 21
4.1 Settings at the instrument..................................................................................21

IGA 140/23 Manual Contents ∂iv
4.2 Key panel operation............................................................................................ 21
4.3 Selection of the serial interface .........................................................................22
4.4 Test function........................................................................................................22
5Settings/Parameter Descriptions ................................................................................23
5.1 Factory Settings...................................................................................................23
5.2 Emissivity ε(Emi) ...............................................................................................23
5.3 Transmittance (σ) .................................................................................................24
5.4 Compensation of ambient temperature (tamb)....................................................24
5.5 Response Time/Exposure Time (t90).....................................................................24
5.6 Clear Time of the Maximum Value Storage (tCL) ................................................ 24
5.7 Analog Output (mA)............................................................................................25
5.8 Subrange (from/to)..............................................................................................25
5.9 Address (Adr).......................................................................................................26
5.10 Baud Rate (Baud)................................................................................................. 26
5.11 Temperature Display (°C or °F) ...........................................................................26
5.12 Wait Time (tw)....................................................................................................... 26
5.13 Maximum internal temperature (MaxIntTemp) ................................................ 26
5.14 Error Status (Status)............................................................................................26
6Software InfraWin.......................................................................................................27
6.1 Connecting the pyrometer to a PC .....................................................................27
6.2 Installation...........................................................................................................27
6.3 Program start.......................................................................................................27
7Maintenance ................................................................................................................29
7.1 Safety...................................................................................................................29
7.2 Service..................................................................................................................29
7.3 Optics Replacement.............................................................................................29
7.3.1 Replacement...................................................................................................... 29
8Troubleshooting ..........................................................................................................31
9Data format UPP (Universal Pyrometer Protocol)......................................................33
10 Reference Numbers .....................................................................................................37
10.1 Instrument Reference Numbers..........................................................................37
10.2 Reference Numbers Accessories .........................................................................37
Index ..................................................................................................................................39

IGA 140/23 Manual General ∂5
1General
1.1 Information about the user manual
Congratulations on your LumaSense Technologies, Inc. IMPAC brand pyrometer purchase!
Please read this manual carefully, step by step, including all safety, security, operations and
maintenance notes, before installing and using your pyrometer, as this manual is an important
source of information and reference. Keep this manual in an easily accessible location to avoid
handling errors. When operating the instrument, be sure to follow all general safety instructions
(see Section 1.2, Safety).
Please also read all included accessory and component manuals.
Should you require further assistance, please call our customer service hotline in Frankfurt,
Germany, [phone] or [phone] in the U.S.
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: This sign indicates special information which is necessary for a correct
temperature measurement.
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 used terminology corresponds to the VDI- / VDE-directives 3511, part 4.
1.2 Safety
This manual provides important information on safely installing and operating the
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 a legible
condition.

IGA 140/23 Manual General ∂6
1.2.1 Laser Targeting Light
For easy alignment to the measuring object, the pyrometer can be equipped with a laser
targeting light. This is a visible red light has 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.
∂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 people by mirrors or
shiny surfaces.
1.2.2 Electrical connection
Follow common safety regulations for mains voltage (230 or 115 V AC) connecting additional
devices operating with this mains voltage (e.g. transformers). Touching mains voltage can be
fatal. An incorrect 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, maintaining, 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 Infrawin 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.

IGA 140/23 Manual General ∂7
1.4 Unpacking the Instrument
Before shipment, each instrument is assembled, calibrated, and tested at the LumaSense Factory.
When unpacking and inspecting your system components, you need to do the following:
1. 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. Final claim and negotiations with the
carrier must be completed by the customer.
2. Carefully unpack and inspect all components for visible damage. If you note any damage
or suspect damage, immediately contact the carrier and LumaSense Technologies, Inc.
3. Save all packing materials, including the carrier’s identification codes, until you have
inspected all components and find that there is no obvious or hidden damage.
Note: LumaSense encourages you to register your product with us to receive updates,
product information, and special service offers:
http://www.info.lumasenseinc.com/registration.
1.5 Malfunction or Service Request
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 1-800-631-0176
∂Email: [e-mail]
Frankfurt, Germany
∂Telephone: [phone]
∂Email: [e-mail]

IGA 140/23 Manual General ∂8
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
airfreight, 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 one has not already been assigned by Technical
Support). Clearly indicate the assigned RMA number on the shipping package exterior.
Send RMA Shipments to your nearest technical service center:
Santa Clara, California
LumaSense Technologies, Inc.
3301 Leonard Court
Santa Clara, CA 95054 USA
Telephone: [phone]
1-800-631-0176
Email:
[e-mail]
Frankfurt, Germany
LumaSense Technologies GmbH
Kleyerstr. 90
60326 Frankfurt
Germany
Telephone: [phone]
Email:
[e-mail]
1.7 Transport, packaging, storage
The instrument can be damaged or destroyed if shipped incorrectly. 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 80 °C with non-condensing
conditions. Storing the instrument 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.

IGA 140/23 Manual Introduction ∂9
2Introduction
2.1 Appropriate use
The IGA 140/23 is a highly accurate digital pyrometer for non-contact temperature measurement
on metals, ceramics, graphite etc. with temperature ranges between 50 and 1800 °C.
2.2 Scope of Delivery
Pyrometer with one selectable optics, works certificate with 3 measuring points, InfraWin
operating and analyzing software, Allen key 3 mm, user manual.
Note: A connection cable is not included with the instrument and has to be ordered
separately. See Chapter 10, Reference Numbers.
2.3 Technical Data
Temperature
Ranges:
50 to 700 °C (MB 7)
75 to 900 °C (MB 9)
100 to 1300 °C (MB 13)
150 to 1800 °C (MB 18)
Sub Range:
A
ny range adjustable within the t
emperature range,
min
.
span 51
°C
Spectral Range:
2.0 to 2.6
µm
IR Detector:
Indium
Gallium
Arsenid
e ph
otodiode
(extended InGaAs)
Signal Processing:
photoelectric current, digitized immediately
Power Supply:
24 V AC or DC (1
4
to 30 V AC or DC) (AC: 48 to 62 Hz)
Power
Consumption: Max. 1.2 W
Analog Output: 0 to 20 mA or 4 to 20 mA (linear), switchable;
Test current 10 mA or 12 mA by pressing test key
Load:
0 to 500
Ω
Switch Contact: max. 0.15 A (only active with automatic clear mode or t
CL
″0.25 s)
Digital Interface:
RS232 or RS485 addressable (half
duplex), switchable;
Baud rate 1200 up to 115200 Bd
Resolution: 0.1 °C on interface and display;
16 bit D/A converter for analog output
Isolation:
P
ower supply, analog output
,
and digital interface are galvanically
isolated from each other
Operation
signal:
green LED
LC display:
Illuminated LC display for temperature indication or parameter settings
Parameters:
Adjustable at the device or via interface:
Emissivity δ, Transmittance σ, exposure time t90, 0 to 20 or 4 to 20 mA,
sub range, clear time for maximum value storage, automatically or
external deletion of maximum value storage, address, baud rate, wait
time tW, ambient temperature compensation
Readable at the device or via interface:
Measuring temperature, internal instrument temperature.

IGA 140/23 Manual Introduction ∂10
E
missivity
ε
:
10.0 to 100.0% adjustable via interface in steps of 0.1%
Transmittance σ: 10.0 to 100.0% adjustable via interface in steps of 0.1%
Exposure Time t
90
:
< 1
.5
ms;
with dynamical adaption at low signal levels
Maximum /
Minimum Value
Storage:
Built
-
in single or double storage. Clearing with adjusted time t
clear
(off;
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:
(with ε=1, t90=1 s,
Tamb.=23°C)
Up to 400 °C: 2 °C
400 to 1500 °C: 0.3% of reading in °C + 2 °C
Above 1500 °C: 0.5% of reading in °C
(Note: the pyrometer must be in operation at least 30 min before these values are valid)
Repeatability:
(ε=1, t
90
=1 s,T
amb.
=23°C) 0.1% of measured value in °C + 1 °C
Protection Class:
IP65 (
DIN 40050)
Ambient
Temperature:
0 to 70 °C (Note: The laser targeting light switches off automatically if the internal
temperature of the instrument goes above 55 °C)
Storage
Temperature: -20 to 80 °C
Weight:
Approx. 550
g
Sighting:
Laser targeting light
(max. power level < 1 mW,
κ= 630-680 nm, CDRH class II)
or built-in optimized thru-lens view finder
CE
-
Label:
According to EU directives about electromagnetic immunity
Rel. Humidity:
Non
-
condensing conditions
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.

IGA 140/23 Manual Introduction ∂11
2.4 Dimensions
Pyrometer
with
thru-lens
view finder:
Pyrometer
with
laser
targeting
light:
All dimensions in mm
2.5 Physical User Interface
1
2
3
7
8
10
4 5
9
611 12
1Focusable optics (with label with optical data)
24 threads for fixing the pyrometer or
accessory parts
3Mounting rail
4Type label
5LC display
6Extendable back cover
7Screws for rear cover (3 mm allen
screws)
8Laser targeting light on/off switch or
parallax free view finder, dependent
on the instrument’s type)
9Operating status pilot light / laser
(on instruments with laser targeting
light)
10 Male socket for electrical connections
11 LC display, extended
12 Setting keys

IGA 140/23 Manual Introduction ∂12
2.6 Accessories (option)
Numerous accessories provide for easy installation of the pyrometer. The following overview
shows a selection of suitable accessories. You can find a list of accessories with reference
numbers in Chapter 10 Reference Numbers.
Mounting:
For mounting and aligning the pyrometer to the
measured object, a mounting angle or a ball and
socket mounting is available.
Ball and socket mounting is an easy way to align the
pyrometer to the measured object. The quick-
clamping-screws enable an easy and fast adjustment
of the pyrometer in all directions.
Ball and socket mounting Mounting angle
Cooling:
The pyrometer can be used in ambient temperatures
outside of the specifications if preventive
maintenance is taken.
The cooling plate is used to protect the pyrometer
from heat coming from the front. The completely
covered water cooling jacket is made from stainless
steel and protects the pyrometer if exposed to a hot
environment. It is designed for ambient temperatures
up to 180 °C. Water cooling jacket Cooling plate
Displays:
In addition to the built-in temperature indicator of
the pyrometer, LumaSense offers several digital
displays that can also be used for remote
parametrizing of the pyrometer.
Digital display DA 6000
Miscellaneous:
The air purge protects the lens from contamination
from dust and moisture. It has to be supplied with
dry and oil-free pressurized air and generates an air
stream shaped like a cone.
The scanning attachment SCA 140 moves the
measuring beam of the pyrometer from 0 to 12°. This
angle is adjustable to smaller values. The scanning
Air purge Scanning attachment SCA 140
LED large display

IGA 140/23 Manual Introduction ∂13
frequency is
also
adjustable from 1 to 5 Hz. In most
cases, the scanning attachment SCA 140 is used as a
peak picker for measuring smaller objects like thin
wires that may be moving.
The 90°-mirror enables the capture of objects at an
angle of 90° to the pyrometer axis.
The flange system with air purge, window slide (easy
and fast cleaning of sighting window) and cooling
jacket is used for the mounting onto the wall of a
combustion chamber.
90° mirror
Flange system

IGA 140/23 Manual Introduction ∂14
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IGA 140/23 Manual Controls and Installation ∂15
3Controls and Installation
3.1 Electrical Installation
The IGA 140/23 is powered by a voltage of 24 V (14 to 30 V) DC or AC (48 to 62 Hz). To switch off
the instrument, interrupt the power supply or unplug the electrical connector.
After connecting the power supply, the display shows the internal firmware version for
approximately 1 s. The green control light on the rear cover is swiched on. The control light
blinks as long as the laser targeting light is switched on (only for instruments equipped with a
targeting light).
To meet electromagnetic requirements (EMV), a shielded connecting cable must be used. The
shield of the connecting cable has to be connected only on the pyrometer's side. On the power
supply (switch board) side, the shield must be open to avoid ground loops.
LumaSense offers connecting cables, which are not part of standard scope of delivery. The
connecting cable has wires for the power supply, interface, analog output, external laser switch,
and external clear of maximum value storage via contact (see section 10, 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 the RS485
interface.
Note: At object temperatures below 150 °C and emissivity smaller than 90%, the
pyrometer needs another half an hour for warm-up until the final accuracy is reached.
Otherwise a sufficient accuracy is reached after approximately 10 min.
3.1.1 Pin assignment of the connector
Pin Color Function
K
white
+ 24 V power
supply (or 24 V AC)
A
brown
0 V power supply
L green
+ I
outp.
analog output
B yellow
–
I
outp.
analog output
H
gray
external switch for targeting light (bridge to K)
J pink
see below, operating mode contact or external
clearing of maximum value storage or hold
function
G
red
DGND (Ground for interface)
F
black
RxD (RS232) or B1 (RS485)
C
violet
TxD (RS232) or A1 (RS485)
D
gray/pink
RxD (RS232) or B2 (RS485) (bridge to F)
E
red/blue
TxD (RS232) or 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
Male socket
Pin-assignment
(side of male inserts)

IGA 140/23 Manual Controls and Installation ∂16
Connector pin J
The connector pin J can be used for 2 different functions:
1) 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 5.5). 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 condition:
∂The clear time is set to “extern“ (see section 5.5)
2) 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 section 5.5 clear time for
the maximum value storage).
3.1.2 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.
For a connection to a PC the use of one of the LumaSense converter cables is recommended:
3 826 750 USB-RS485 adaptor cable, 1.8 m, HS-Version 4,5 Mbd
3 852 580 USB-RS232 adaptor cable, 1.5 m
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 5.10 Wait time tw).
Connecting to the 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 has to be reduced by 50%
when the transmission distance is doubled
(see also 5.9 Baud rate)
Connecting to the RS485 Interface
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
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 fe
male
cable connector)
cable
PC’s side
(soldering side
female
cable connector)
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
Terminator
120 Ohm

IGA 140/23 Manual Controls and Installation ∂17
dependent on the length of the cable. Values between 2400 and 115200 Bd may be set.
The baud rate is reduced by 50% when the transmission distance is doubled (see 5.9 Baud rate).
Typical cable length for 19200 Bd is 2 km.
3.1.3 Connection of Additional Analyzing Devices
Additional analyzing instruments, such as an LED digital display instrument, only need to be
connected to a power supply and the analog outputs from the pyrometer. Other instruments,
such as a controller or printer, can be connected to the display in series as shown below (total
load of resistance max. 500 Ohm).
230V ~
24 V DC
°C
yellow
LED digital display
Controller
Power supply
green
brown
white
Writer
3.2 Mechanical Installation
For mounting the pyrometer is equipped with a mounting rail on the bottom. This rail allows
easy fixing of an adjustable mounting angle or a ball and socket mounting. Another possibility
for fixing the pyrometer is using the 4 thread holes M 5 on the front of the instrument.
3.3 Sighting
For exact aiming to the object the pyrometers are equipped with a thru-lens view finder or a
laser targeting light.
3.3.1 Thru-lens view finder
The view finder can be used to align the measured object
through direct observation. The view finder is true-sided
and parallax-free; a circle marks the position of the
measuring area, but not the exact size.
The pyrometers are equipped with an adjustable eye
protection filter. Turning the ocular changes the filter from
bright to dark.
3.3.2 Laser targeting light
The laser targeting light is a red laser beam used to align
the pyrometer to a target. The laser marks the center of
the measuring spot. The laser targeting light can be used
during operation without affecting the measurement.
When the laser targeting light is
switched on, the green control light
on the rear cover is blinking and the
display shows “PILT”.
Thru-lens
view finder
PILT display
Laser
targeting light
push button
(on/off)
Blinking
control light

IGA 140/23 Manual Controls and Installation ∂18
The laser targeting light can be switched on and off either by pressing the button at the
housing or by using an external contact connecting pins H and K or connecting an external
voltage (5 to 30 V DC) to pin H or via PC and InfraWin software (see 3.1.1 Pin assignment of
the male socket on the back of the pyrometer). After two minutes the laser targeting light
is switched off automatically.
Note: To prevent damage to the laser, the laser targeting light switches off
automatically if the internal temperature of the device goes above approx. 55 °C (then
it can not be switched on again until the temperature is lower again)!
3.4 Optics
The pyrometers are equipped with one of the following optics. This allows the adjustment to
the needed measuring distance to offer the smallest possible spot sizes.
Note: The measuring object must be as least as big as the spot size.
3.4.1 Measuring Distance
Optics
Meas.
Distance a
(mm)
Spot size
M90 (mm)
(MB 7)
Spot size
M90 (mm)
(MB 9)
Spot size
M90 (mm)
(MB 13)
Spot size
M90 (mm)
(MB 18)
Objective
length S
(mm)
1-23
105 1.7 1.1 0.8 0.5 26
119 2.1 1.4 0.9 0.6 13
136 2.4 1.5 0.9 0.6 5
150 2.8 1.6 1.0 0.6 0
2-23
190 3.0 1.8 1.1 0.8 26
255 4.1 2.5 1.4 1.0 13
340 5.6 3.3 1.8 1.1 5
440 7.6 4.5 2.4 1.5 0
3-23
320 4.5 2.7 1.5 1.1 26
540 8.0 4.7 2.4 1.5 13
1530 25 14.4 7.3 4.5 3
4300 72 42 21 12.5 0
Aperture (D/mm) 14 … 18 14 … 18 14 … 18 12 … 15
All distances are measured from the front surface of the lens.

IGA 140/23 Manual Controls and Installation ∂19
3.4.2 Adjusting the required measuring distance
The required measuring distance must be adjusted to achieve
the spot sizes mentioned in the table above. This can be done
between the smallest and the biggest limit value.
For releasing the optics has to be turned anticlockwise. Then it
can be pushed or pulled to find the correct measuring distance.
For fixing the optics has to be turned clockwise.
Adjusting the measuring distance with help of the table:
The table mentions the minimum and maximum measuring
distance for each optics (this corresponds to the longest or the
shortest objective length) as well as several other values. The
objective length “S” can be measured with a caliper.
Adjusting the measuring distance with help of the thru-
lens view finder
The focusable optics is correctly adjusted to the required distance, if the measuring object is
shown as a sharp image in the view finder. A circle marks the position of the measuring spot.
Adjusting the measuring distance with help of the laser targeting light:
On the focused measuring distance the laser has its smallest spot size and is illustrated exactly.
release
fix
push / pull
Objective length S

IGA 140/23 Manual Controls and Installation ∂20
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