LumaSense IMPAC ISR 12-LO/GS User manual

MANUAL
IMPAC Pyrometer
ISR 12-LO/GS

Confidential Information
The material contained herein consists of information that is the property of LumaSense
Technologies, an Advanced Energy Company, 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 or Advanced
Energy Industries, Inc.
Any unauthorized use of this manual or its contents is strictly prohibited.
Copyright
© 2018 LumaSense Technologies, Inc. All Rights Reserved. LumaSense Technologies, Inc., a
subsidiary of Advanced Energy Industries, Inc.
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]
Frankreich
Sales & Support Center
Erstein, Frankreich
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 [e-mail]
[e-mail]
[e-mail]
Website http://www.lumasenseinc.com
Part No 3 855 216
Revision B
October 2018

ISR 12-LO/GS Manual Contents •iii
Contents
1General Information ......................................................................................................... 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 Electrical connection................................................................................................6
1.3 Limit of liability and warranty................................................................................ 6
1.4 Unpacking the Instrument ....................................................................................... 6
1.5 Service Request, Repair, or Support ....................................................................... 6
1.6 Shipments to LumaSense for Repair ...................................................................... 7
1.7 Transport, Packing, Storage .................................................................................... 7
1.8 Disposal / decommissioning .................................................................................... 8
2Introduction....................................................................................................................... 9
2.1 Appropriate use ........................................................................................................ 9
2.2 Scope of delivery ...................................................................................................... 9
2.3 Technical Data ......................................................................................................... 10
2.4 Dimensions .............................................................................................................. 12
2.5 Physical User Interface ........................................................................................... 13
2.6 Accessories (Optional)............................................................................................ 13
2.6.1 Mounting................................................................................................................13
3Controls and Installation................................................................................................ 15
3.1 Electrical Installation.............................................................................................. 15
3.1.1 Pin assignment for the male socket on the bottom side of the pyrometer ......15
3.1.2 Connector pin J ......................................................................................................16
3.2 Connecting the pyrometer to a PC ....................................................................... 16
3.2.1 Connecting to RS232 interface .............................................................................17
3.2.2 Connecting to RS485 interface .............................................................................17
3.3 Connection of additional analyzing devices ....................................................... 18
3.3.1 Laser targeting light ..............................................................................................18
3.4 Mechanical installation.......................................................................................... 18
3.4.1 Pyrometer...............................................................................................................18
3.4.2 Fiber optic...............................................................................................................19
3.4.3 Color mark at the fiber..........................................................................................19
3.4.4 Ambient temperature ...........................................................................................19
3.4.5 Serial number.........................................................................................................19
3.4.6 Minimum bending radius......................................................................................19
3.4.7 Optical head...........................................................................................................19
3.5 Optics ....................................................................................................................... 20
3.5.1 Spot Sizes................................................................................................................20
3.5.2 Spot size table........................................................................................................20
3.6 Aligning the optical head to the pouring stream............................................... 21
3.7 Aligning the optical head with help of the laser targeting light ..................... 21

ISR 12-LO/GS Manual Contents •iv
4Settings / Parameter Descriptions................................................................................. 23
4.1 Factory Settings ...................................................................................................... 23
4.2 Instrument settings ................................................................................................ 24
4.2.1 Special indications .................................................................................................25
4.3 Pouring stream mode............................................................................................. 25
4.4 Temperature display (°C / °F) ................................................................................. 27
4.5 Emissivity ε/ emissivity slope K............................................................................ 27
4.6 Exposure time (t90/ s) ............................................................................................. 28
4.7 Clear time of the maximum value storage (tCLEAR) .............................................. 28
4.8 Operating mode (1 / 2 / M) ..................................................................................... 29
4.9 Switch-off limit (OFF / %)....................................................................................... 30
4.10 Analog Output ........................................................................................................ 30
4.11 Sub Range ................................................................................................................ 30
4.12 Device Address........................................................................................................ 30
4.13 Baud Rate................................................................................................................. 31
4.14 Analog Test 10 mA.................................................................................................. 31
4.15 Wait time (tw) .......................................................................................................... 31
5Software InfraWin........................................................................................................... 33
5.1 Connecting the pyrometer to a PC ....................................................................... 33
5.2 Installation .............................................................................................................. 33
5.3 Program start .......................................................................................................... 33
6Maintenance .................................................................................................................... 35
6.1 Safety ....................................................................................................................... 35
6.2 Service...................................................................................................................... 35
6.3 Changing of optics ................................................................................................. 35
7Data format UPP (Universal Pyrometer Protocol) ....................................................... 37
8Reference Numbers......................................................................................................... 41
8.1 Reference numbers instrument ............................................................................ 41
8.2 Reference numbers accessories ............................................................................ 41
9Troubleshooting .............................................................................................................. 43
Index ....................................................................................................................................... 45

ISR 12-LO/GS Manual General Information •5
1General Information
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 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: 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.
Security note laser beam
Indicates to the danger of a built-in laser targeting light.
Text Text written in gray color explains integrated functions of the pyrometer which are not
used in pouring stream mode.
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 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 is to be observed and maintained in legible
condition.

ISR 12-LO/GS Manual General Information •6
1.2.1 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.
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. Final claim
and negotiations with the carrier must be completed by the customer.
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.

ISR 12-LO/GS Manual General Information •7
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: [e-mail]
Frankfurt, Germany
•Telephone: [phone]
•Email: [e-mail]
Erstein, France
•Telephone: [phone]
•Email: [e-mail]
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.
Send RMA Shipments to your nearest technical service center:
Santa Clara, California 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: [e-mail]
1.7 Transport, Packing, 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 instrument out of these conditions can cause damage or result in
malfunction of the pyrometer.

ISR 12-LO/GS Manual General Information •8
1.8 Disposal / decommissioning
Inoperable instruments must be disposed of in compliance with local regulations for electronic
materials.

ISR 12-LO/GS Manual Introduction •9
2Introduction
2.1 Appropriate use
The pyrometers ISR 12-LO/GS is a special foundry system for the measurement of the pouring
stream in foundries. This system is useful in automatic or semi automatic pouring machines and
displays the temperature after each single pouring process.
A ratio pyrometer is required for this application because
•molten metal has a very low and fluctuating emissivity
•the position of the pouring stream is moving so that the measuring spot of the
pyrometer is only partially filled
The pyrometer is equipped with a special pouring stream mode which calculates one average
temperature value for each single casting process. Temperature values in the beginning and the
end of the casting process can be eliminated which can affect the correct measurement. The
shape of the spot size of the optics is a line which guarantees that even a moving pouring
stream is always within the spot.
The pouring stream temperature of each single casting process and with that of each single
casted part can be recorded automatically with the ISR 12-LO/GS. The temperature value of each
finished casting process is displayed on the pyrometer and available as analog and digital
output. With that the casting can be con-trolled very accurately to achieve the high-quality
requirements of casted parts.
The measured values can be stored and displayed via analog and digital output.
Note: If the pyrometer should be used in other applications, the pouring stream
mode can be switched off to use the pyrometer in standard 2-color or 1-color mode to
use like a conventional pyrometer. In this case the descriptions printed in grey color
have to be noticed.
2.2 Scope of delivery
Converter, optical fiber and optical head as per configuration, works certificate, PC software
InfraWin, and user manual.
Note: A connection cable is not included with the instrument and has to be ordered
separately (see Chapter 8,Reference numbers).

ISR 12-LO/GS Manual Introduction •10
2.3 Technical Data
Measurement
Temperature Ranges:
600 ... 1300 °C (MB 13)
750 ... 1800 °C (MB 18)
900 ... 2500 °C (MB 25)
Sub Range:
Any range adjustable within the temperature range, minimum span
51 °C
Signal processing:
Photoelectric current, digitized
Spectral Ranges:
λ1: 0,8 µm / λ2: 1,05 µm
Measuring modes:
Pouring stream / ratio- (2-color-) / mono- / metal mode switchable
Resolution:
Display: 1 °C
Interface: 0.1 °C
Analog output: < 0.025% of temperature range
Emissivity slope K:
ε1/ ε2: 0.8 … 1.2 (adjustable in steps of 0.001)
Emissivity ε:
0.1 … 1 (adjustable in steps of 0.001)
Switch-off limit:
2% … 50% (in 1%-steps)
Measurement Uncertainty:
(ε= 1, t90 = 1 s, TUmg.= 23 °C)
0.4% of reading in °C + 1 °C (< 1500 °C)
0.6% of reading in °C + 1 °C (> 1500 °C)
Repeatability:
(ε= 1, t90 = 1 s, TUmg.= 23 °C)
0.2% of reading in °C + 1 °C
Pre-run time:
0 … 9.9 s adjustable in steps of 0.1 s
Follow-up time:
0 … 9.9 s adjustable in steps of 0.1 s
Start condition:
0 … 99% (amount of measurement values in %, which must exceed the
beginning of the adjusted temperature range)
Environment
Protection Class:
IP 65 (DIN 40 050)
Ambient Temperature:
Converter housing: 0 … 60 °C
Optical head: up to 250 °C
Storage Temperature:
-20 … 70 °C
Relative Humidity:
Non condensing conditions
Weight:
2.2 kg
CE-Label:
According to EU directives about electromagnetic immunity
Interface
Control panel:
4 function keys, switch for serial interface, push button for test current
Sighting:
Laser targeting light (max. power level < 1 mW,
λ
= 630 … 680 nm,
CDRH class II). (Measurement is stopped while laser targeting light is
switched on).
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,
0 … 20 or 4 … 20 mA, sub range, address, baud rate, °C/°F
Readable at the device or via interface:
Pouring stream temperature (in 1-color mode: measuring
temperature)
Adjustable only via interface commands:
Pre-run time, follow-up time, start condition, wait time tW, keyboard
lock

ISR 12-LO/GS Manual Introduction •11
Communication
Analog Output:
0 … 20 mA or 4 … 20 mA switchable, load 0 … 500 Ohm
Test current 10 mA by pressing test key
Digital Interface:
Switchable: RS232 or RS485 addressable (half duplex),
baud rate 2.4 up to 115.2 kBd
Display:
Built-in 4-digit 7-segment-LED, height 13 mm; LED’s for:
- °C/°F;
- clear mode “auto“,“ext“;
- ratio- (2-color) / mono- / metal mode
Exposure Time t
90
:
2 ms (with dynamical adaptation at low signal levels),
adjustable to 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 tclear (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, hold
function to freeze the actual displayed pouring stream temperature
Electrical
Power Supply:
24 V DC (15 … 40 V DC) or 24 V AC (12 … 30 V AC), 48 … 62Hz
Power Consumption:
Max. 10 W
Switch Contact:
Max. 0.15 A (only active with automatic clear mode or tCL ≥0.5 s)
Isolation:
Power supply, analog output and digital interface are
galvanically isolated from each other
Note: 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.

ISR 12-LO/GS Manual Introduction •12
2.4 Dimensions
Pyrometer housing:
Optical head:
cover
window
Lens
all dimensions in mm

ISR 12-LO/GS Manual Introduction •13
2.5 Physical User Interface
Pyrometer Pyrometer housing
1Display for clear mode
2Display °C or °F
3LED display for temperature or parameter
4Display for measuring mode
5 Mounting screws for cover (4 units)
6Fibre optic
7Optical head (with label about ex works
setting of the measuring distance)
8Display
9Parameter indicator
10 Interface switch
11 Push button for test current
12 Setting keys
13 Electrical connection
14 Connection for optical fiber
15 Mounting holes
2.6 Accessories (Optional)
Numerous accessories guarantee easy installation of the pyrometers. The following overview
shows a selection of suitable accessories. You can find the entire accessory program with all
reference numbers on Chapter 8,Reference numbers.
2.6.1 Mounting
Mounting:
For mounting and aligning the pyrometer to the
measured object a mounting angle or ball and socket
mountings is available. The ball and socket mounting
is an easy way to align 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.
9
8
13
14
15
10
11
12
1
2
3
4
6
7
5

ISR 12-LO/GS Manual Introduction •14
Protection housing:
Stainless steel (water cooling) jacket with integrated
air purge unit as protection jacket for optical head
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 generates an air
stream shaped like a cone.
Displays:
Additionally, to the built-in temperature indicator of
the pyrometer IMPAC offers several digital displays
which can also be used for remote parametrizing of
the pyrometer.
LED digital display

ISR 12-LO/GS Manual Controls and Installation •15
3Controls and Installation
3.1 Electrical Installation
The ISR 12-LO/GS is powered by a voltage of 24 V DC or AC. The length of the 24 V supply line
should not be longer than 30 m. Hence the use of 24 V site internal supply network is also not
recommended. This length restriction does not apply for the analog and digital signal lines.
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 side to avoid
ground loops.
IMPAC 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 connectors. 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.
Attention: When connecting the power supply, ensure the polarity is correct.
3.1.1 Pin assignment for the male socket on the bottom side of the
pyrometer
Pin
Color
Indication
K white + 24 V power supply (or 24 V AC) (12 ... 30 V)
A brown 0 V power supply
L green + Ioutp.
analog output
B yellow
– Ioutp. analog output
H gray
external switch for targeting light (bridge to
)
J pink
See 4.8: output for operating mode contact,
external clearing of maximum value storage,
lens contamination monitoring or extern
hold
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
Connector
Pin assignment
(side of male inserts)

ISR 12-LO/GS Manual Controls and Installation •16
3.1.2 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 4.7). 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 4.7)
•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%.
3) 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 relays (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% 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“ or “hold” (see 4.7).
•The pyrometer is operating in “2-color mode” (see 4.8)
4) Extern Hold: When the hold function mode is activated the current pouring stream
temperature (or the current temperature reading if the instrument is not in pouring stream
mode) is frozen if J and pin K are connected (see 4.7 clear time of the maximum value
storage).
3.2 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.
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.

ISR 12-LO/GS Manual Controls and Installation •17
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 IMPAC-converter
(order no. 3 852 430).
With a slow RS485 connection it is also possible to set a wait time at the pyrometer which delays
the response of a command to the pyrometer (see 4.15 Wait time).
3.2.1 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
4.13 Baud rate (kBaud)).
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)
3.2.2 Connecting to 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 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
4.13 Baud rate (kBaud)). 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/GS Manual Controls and Installation •18
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. Another
instrument 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
di l
Controller
Power supply
gree
brown
white
230 V ~
24 V
°C
Printer
3.3.1 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.
3.4 Mechanical installation
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!
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)).
cover
Drill holes

ISR 12-LO/GS Manual Controls and Installation •19
3.4.2 Fiber optic
Depending on the measuring range
two different fibers are used. They are
marked red or blue. The color mark
must be mounted on the pyrometer’s
side.
The fiber optic is equipped with a
special connector which allows 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.
3.4.3 Color mark at the fiber
Blue: MB 13
Red: MB 18, 25
3.4.4 Ambient temperature
Fiber and optical head can withstand ambient temperatures up to 250 °C without cooling on
optical head’s side.
3.4.5 Serial number
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. A recalibration of the pyrometer is not
necessary if it is only used in ratio mode or pouring stream mode. If the pyrometer is also used in
mono mode or metal mode it must be calibrated together with the fiber (service).
3.4.6 Minimum bending radius
Blue: 100 mm for short time, 300 mm permanently
Red: 50 mm for short time, 120 mm permanently
Note: A hot fiber optic cable should not be exposed to continual movement!
3.4.7 Optical head
The FSMA connector on the side of the optical head
doesn’t need a special justification if bold together.
If required, the optical head can be replaced by
another one (also without line spot size). A
recalibration of the pyrometer is not necessary if it is
only used in ratio mode. If the pyrometer also used in
mono mode or metal mode it must be calibrated
together with the fiber (service).
Fiber
Screw connection
Pin
Cut-out
Color mark

ISR 12-LO/GS Manual Controls and Installation •20
3.5 Optics
3.5.1 Spot Sizes
2 different optical heads are available. They have a special spot size in shape of a line which
guarantees that even a moving pouring stream can always be captured.
The optical heads differ in its spot size depending on the measuring distance. The correct
selection depends on the size of the pouring stream if the pouring stream is moving and the
required distance to the stream.
The optical head must be adjusted to required measuring distance to reach the specified spot
sizes. Distances between 340 and 4500 mm are possible (the adjusted value is mentioned on the
back of the optical head.
The table above shows some examples for different measuring distances (distance measured
from front of the lens to the object, see 2.4 Dimensions)
3.5.2 Spot size table
Optical head with line spot width Optical head with line spot width
= 5% of measuring distance = 12% of measuring distance
Spot [mm]
Width x Height
Spot [mm]
Width x Height
Measuring
Distance
a[mm]
MB 18, 25
MB 13
Measuring
Distance
a[mm]
MB 18, 25
MB 13
340
17 x 1.6
17 x 3.2
340
41 x 1.6
41 x 3.2
500
25 x 2.4
25 x 4.8
500
60 x 2.4
60 x 4.8
750
37.5 x 3.8
37.5 x 7.6
750
90 x 3.8
90 x 7.6
1000
50 x 5
50 x 10
1000
120 x 5
120 x 10
2000
100 x 11
100 x 22
2000
240 x 11
240 x 22
4500
225 x 22
225 x 44
4500
540 x 24
540 x 44
Note: The table mentions spot sizes for different fixed measuring distances of the optical
head. Deviations from the adjusted measuring distances create a certain blur, which
results in an enlarged spot size.