LumaSense 320 Series User manual

MANUAL
Series 320
IGA 320/23-LO IMPAC Pyrometer
上海麦兴仪器设备有限公司 www.imaxsun.com

IGA 320/23-LO Operating Manual Contents
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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
1.3 Limit of liability and warranty .............................................................................. 5
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, packaging, storage ............................................................................... 7
1.8 Disposal / decommissioning................................................................................... 7
2Introduction..................................................................................................................... 9
2.1 Appropriate use ...................................................................................................... 9
2.2 Scope of delivery .................................................................................................... 9
2.3 Technical data.......................................................................................................... 9
2.4 Dimensions ............................................................................................................ 11
2.4.1 Instrument..............................................................................................................11
2.4.2 Optics ......................................................................................................................11
Optical Head Type I (Fixed Adjusted)....................................................................................... 11
Optical Head Type II (Fixed Adjusted)...................................................................................... 11
Optical Head Type II (Focusable) .............................................................................................. 11
2.5 Physical User Interface.......................................................................................... 12
2.6 Accessories (Optional) .......................................................................................... 12
2.6.1 Mounting................................................................................................................12
2.6.2 Air purge ................................................................................................................12
2.6.3 Displays ...................................................................................................................12
3Controls and Connections ............................................................................................ 13
3.1 Electrical Installation ............................................................................................ 13
3.1.1 Pin assignment of the male socket on the back of the pyrometer....................13
3.2 Connecting the pyrometer to a PC ...................................................................... 14
3.2.1 Connecting to RS485 interface / baudrate...........................................................14
3.2.2 Wait time tw...........................................................................................................15
3.2.3 Connecting additional analyzing devices ............................................................15
3.3 Mechanical Installation ........................................................................................ 15
3.3.1 Fiber optic...............................................................................................................15
3.3.2 Optical head...........................................................................................................16
3.4 LED targeting light................................................................................................ 16
3.5 Optical head........................................................................................................... 17
3.5.1 Spot size data (measuring distance from the front of the lens) ........................17
3.5.2 Adjusting the required measuring distance with optical head Ιor ΙΙ, fixed
adjusted ...............................................................................................................................18
3.5.3 Adjusting the required measuring distance with optical head ΙΙ, focusable ....18

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4Settings / parameter descriptions................................................................................ 19
4.1 Factory settings..................................................................................................... 19
4.2 Basic range............................................................................................................. 19
4.3 Material.................................................................................................................. 19
4.4 Temperature display in °C or °F ........................................................................... 19
4.5 Emissivity ε............................................................................................................ 20
4.6 Transmittance
τ
..................................................................................................... 20
4.7 EmiAutoFind.......................................................................................................... 20
4.8 Response time / exposure time (t90)................................................................... 20
4.9 Clear time of the maximum / minimum value storage (tCL)............................. 21
4.9.1 Max / Min................................................................................................................22
4.10 Analog Output....................................................................................................... 22
4.11 LED targeting light................................................................................................ 22
4.12 Subrange................................................................................................................ 22
4.13 Ambient temperature compensation.................................................................. 22
4.14 Address .................................................................................................................. 23
4.15 Limit switch (SP1).................................................................................................. 23
4.16 Operating hours .................................................................................................... 23
5Software InfraWin......................................................................................................... 25
5.1 Connecting the pyrometer to a PC ...................................................................... 25
5.2 Installation ............................................................................................................ 25
5.3 Program start ........................................................................................................ 25
6Maintenance .................................................................................................................. 27
6.1 Safety ..................................................................................................................... 27
6.2 Service.................................................................................................................... 27
7Data format UPP (Universal Pyrometer Protocol)....................................................... 29
8Reference numbers ....................................................................................................... 33
8.1 Reference numbers instrument ........................................................................... 33
8.2 Reference numbers accessories ........................................................................... 33
9Troubleshooting ............................................................................................................ 35
Index..................................................................................................................................... 37

IGA 320/23-LO Operating Manual Introduction
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2Introduction
2.1 Appropriate use
The IGA 320/23-LO is a short wavelength temperature measuring instrument with fiber optics
and internal digital signal processing capabilities. This pyrometer is used for non-contact
temperature measurements on metals, ceramics, graphite, etc. with a temperature range
between 85 and 1200 °C.
For optimal match of the instrument to the application, two different optical heads are
available. The small dimensions of the optics allow easy integration into compact production
machines. The instrument is equipped with a fiber and an exchangeable optical head. The fiber
and optical head are unaffected by electromagnetic interferences (e.g. induction) and can be
used in high ambient temperatures up to 200 °C without additional cooling.
The LED targeting light enables precise alignment on the measurement object. It is
automatically active and can be used during measurement. In addition to the analog output, the
pyrometer is equipped with a digital RS485 interface, which enables secure data transmission to
a PC or a PLC over long distances.
The included InfraWin software enables graphical display and storage of measurement values,
as well as easy set-up of all instrument parameters.
2.2 Scope of delivery
Pyrometer IGA 320/23-LO, PC adjustment and evaluation software “InfraWin”, inspection sheet,
manual. Fiber, one selectable optical head.
Note: A connection cable is not included with the instrument and has to be ordered
separately (see Chapter 8,Reference numbers).
2.3 Technical data
Temperature ranges:
85 … 600 °C (MB 6)
100 ... 700 °C (MB 7)
150 … 1200 °C (MB 12)
Sub range:
Any range adjustable within the temperature range
minimum span 51 °C
Spectral range:
2 to 2.6 µm (main wavelength 2.3 µm)
IR detector:
Extended InGaAs
Optics:
Optical head Type I or Type II
Fiber Ø 0.6 mm (green fiber mark) for MB 6
Fiber Ø 0.4 mm (blue fiber mark) for MB 7
Fiber Ø 0.2 mm (red fiber mark) for MB 12
DIN connector electronics side SMA connector optics side
Power supply:
24 V DC (10 to 30 V DC), ripple must be less than 0.5 V
Power consumption:
Max. 1 W
Analog output:
0 to 20 mA or 4 to 20 mA (linear), switchable
Load:
0 to 500 Ω
Switch contact:
Opto relays; max. 50 V DC, 0.2 A; max. Pmax = 300 mW

IGA 320/23-LO Operating Manual Introduction
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Hysteresis:
2 to 20 °C
Digital Interface:
RS485 addressable (half duplex); baud rate 1200 up to 38400 Bd or
RS232; baud rate 1200 up to 115200 Bd
Resolution:
0.1 °C on interface;
< 0.025% of the adjusted temperature sub range at the analog output
Isolation:
Power supply, analog output, and digital interface are galvanically isolated
from each other
Parameters:
Adjustable via interface:
Emissivity ε, transmittance τ, exposure time t90, clear times for max. / min.
max./min. value storage, analog output, sub temperature range, ambient
temperature compensation, pyrometer address, switch contact, hysteresis,
baud rate, wait time tW, targeting light
Emissivity ε:
10.0 to 100.0% adjustable via interface in steps of 0.1%
Transmittance τ:
10.0 to 100.0% adjustable via interface in steps of 0.1%
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 / 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), 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
Above 400 °C: 0.3% of measured value in °C + 1 °C
(Note: the pyrometer must be operate at least 30 min before these values are valid)
Repeatability:*
(
ε
=1, t90=1 s, Tamb.=23 °C)
0.1% of measured value 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:
IP 54 (IEC 60529)
Installation:
Any
Ambient temperature:
0 to 70 °C on housing, up to 200 °C on side of fiber and optical head
Storage temperature:
-20 to 70 °C
Rel. humidity:
Non condensing conditions
Weight:
0.53 kg incl. optical fiber and lens assembly
Housing:
Stainless steel
Connector:
8 pin connector
Sighting:
Built-in LED targeting light (default: continuously on)
CE-label:
According to EN 61326-1:2006-10
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 320/23-LO Operating Manual Introduction
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2.4 Dimensions
2.4.1 Instrument
2.4.2 Optics
Optical Head Type I (Fixed Adjusted)
Optical Head Type II (Fixed Adjusted)
Optical Head Type II (Focusable)
161.8
144.3
102
35.5
48
29
Ø
23.5
Ø
25
M25 x1.5

IGA 320/23-LO Operating Manual Introduction
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2.5 Physical User Interface
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.
2.6.1 Mounting
To mount and align the optical head to the
measured object, mounting angles or a ball and
socket mounting are available. Both options allow
you to easily mount the optical head and align it to
the measured object. However, the clamping-screws
of the ball and socket mounting also allow you to
quickly adjust the pyrometer in all directions.
Mounting angles
Ball and socket mounting
2.6.2 Air purge
The air purge protects the lens from contamination
of dust and moisture. It has to be supplied with dry
and oil-free pressurized air (1.5 m³ / h) and generates
an air stream shaped like a cone.
Air purge
2.6.3 Displays
For temperature indication, several digital displays
are available. Some of them can also be used for
remote configuration of the pyrometer.
Digital display
DA 6000
Robust stainless steel
housing with small
d
LED targeting light shows middle
of spot size and optics focus
Precision
optics
Connection cable with
connector and cables
for:
•Power supply
•LED targeting light
switch on/off
•RS485 interface
•Analog output
•Switch contact
Monofiber in
stainless steel, flexible
protection tube

IGA 320/23-LO Operating Manual Controls and Connections
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3Controls and Connections
3.1 Electrical Installation
The IGA 320/23-LO is powered by a voltage of 24 V DC (possible range 10 to 30 V, ripple < 0.5 V).
It is important to ensure correct polarity when connecting the device to the power supply.
To meet the electromagnetic requirements (EMV), a shielded connecting cable must be used.
LumaSense offers connecting cables, which are not part of the standard scope of delivery. The
shield of the connecting cable has to be connected only on the pyrometer’s side. If the
connecting cable is extended, the shield of the extension also needs to be extended. The shield
must be open on the power supply side (switchboard), to avoid ground loops.
The connecting cable has wires for the power supply, interface, analog output, switch contact,
and external clearing of the maximum value storage via contact and 8-pin connector (see
Chapter 8,Reference numbers).
Warning: Follow common safety regulations for mains voltage (230 or 115 V AC) and
connecting additional devices operating with this mains voltage (e.g. transformers).
Touching mains voltage can be fatal. 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.
Once the instrument has been connected to the power supply, it is immediately ready for use.
Although it does not need to be warmed up, it does need to run for approximately 15 to 30
minutes before achieving full accuracy. The instrument can be switched off by interrupting the
power supply or unplugging the electrical connector.
3.1.1 Pin assignment of the male socket on the back of the pyrometer
RS485 Versions
Pin
Color
Indication
1
white
+ 24 V power supply
2
brown
0 V power supply
3 green
+ Iout analog output
4
yellow
– Iout analog output
5 grey
Switches on and off LED targeting light
(via push button) (bridge to +24 V)
6
blue
switch contact (reference point 0 V)
7
violet
A1
8
black
B1
7
red/blue
A2 (bridge to A1)
8
gray/pink
B2 (bridge to B1)
orange
Screen only for cable extension,
don’t connect at the switchboard
Pin assignment
(side of male
inserts)
Male socket

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RS232 Versions
Pin
Color
Indication
1
white
+ 24 V power supply
2
brown
0 V power supply
3
green
+ I
out
analog output
4
yellow
– Iout analog output
5 grey
Switches on and off LED targeting light
(via push button) (bridge to +24 V)
6
red
DGND
7
violet
TxD
8
black
RxD
orange Screen only for cable extension,
don’t connect at the switchboard
3.2 Connecting the pyrometer to a PC
The pyrometer is equipped with an RS485 serial interface. With the RS485, long transmission
distances can be realized and the transmission is, to a large extent, free of problems. The RS485
also allows several pyrometers to be connected in a bus system.
If an RS485 connection is not available at the PC, it can be accomplished using the RS485 to USB
connector. When using a RS485 to USB adapter, make sure that the adapter is fast enough to
receive the pyrometer’s answer to an instruction of the master. Most of the commonly used
adapters are too slow for fast measuring equipment, so it is recommended to use the
RS485 USB converter “USB nano“(ref. no. 3 852 600).
With a slow RS485 connection, it is also possible to set a wait time to the pyrometer (e.g. via the
“Test” field of the software InfraWin) which delays the response of a command to the
pyrometer (see also 3.2.2,Wait time tw).
3.2.1 Connecting to RS485 interface / baudrate
The pyrometer is operating in half-duplex mode. A1 and A2 as well as B1 and B2 are bridged in
the 8-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 38400 Bd may be set
(via software InfraWin or
the command “br” when
using another communication
software, see command table
under 7, data format UPP).
The baud rate is reduced by
50% when the transmission distance is doubled. The typical cable length for 19200 Bd is 2 km.

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3.2.2 Wait time tw
When 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
(between 00 and 99 bit) 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).
3.2.3 Connecting additional analyzing devices
Additional analyzing instruments, such as a LED digital display instrument, need 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 below (total load of
resistance max. 500 Ohm).
3.3 Mechanical Installation
3.3.1 Fiber optic
The fiber has either a green mark
(MB 6) blue mark (MB 7) or a red mark
(MB 12) for correct connection to the
pyrometer. This color mark has to be
mounted on the pyrometer’s side.
Please note that the connector on the
instrument side of the fiber has an
alignment pin. When connecting to
the socket, you have to turn the
connector until the pin is in the right
orientation before you can fix the
connector with the knurled nut.
Attention: 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 200 °C without cooling on
the side of the optical head.
Attention: The temperature of the fiber and optical head must be at least 30 °C
lower than the measuring temperature to get a correct temperature reading.
yellow
LED digital display
Controller
Power supply
green
brown
white
230V ~
24 V DC
°C
Writer

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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-brand fiber. In this case, the pyrometer has to be
calibrated together with the fiber (service).
Minimum bending radius
Fiber Ø 0.6 mm
(green mark)
Fiber Ø 0.4 mm
(blue mark)
Fiber Ø 0.2 mm
(red mark)
for short time (max. 200 °C)
150 mm
150 mm
50 mm
permanent (max. 200 °C)
500 mm
500 mm
120 mm
wound up (max. 50 °C)
500 mm
500 mm
120 mm
Attention: A hot fiber optic cable should not be exposed to continual movement!
3.3.2 Optical head
The FSMA connector is equipped with
a screw connection that allows you to
easily attach an optical head. There is
no alignment pin at the fiber
connector – it can easily be plugged in
and fixed by turning the knurled nut.
You can exchange optical heads of the
same type without having to
recalibrate the pyrometer.
3.4 LED targeting light
The pyrometer must be correctly aligned to the measurement object in order to obtain
an exact measurement of the object temperature. The pyrometer is equipped with
an LED targeting light that allows for simple and accurate alignment, even onto
small objects.
When measuring bigger objects where exact alignment is not necessary,
the pyrometer can be aligned using the thermal method. In this case,
the instrument simply is aligned to the highest temperature
reading.
The LED targeting light can be switched on and off by using an external contact (see 3.1.1 Pin
assignment for the connector on the back side of the pyrometer) or via PC and the
software InfraWin (see section 4.11 Settings via interface and software).

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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, fixed adjusted): With very small
dimensions, the optical head Ιis suited for use in confined spaces. The
optics is adjusted ex works to one of the measuring distances
mentioned in the table in section 3.5.1 The mentioned spot size will
be achieved in exactly this distance (other distances can be realized on
request).
Type
ΙΙ
(large optical head, focusable): The optical head ΙΙ is
focusable, i.e. 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 table in section 3.5.1.Spot sizes at intermediate
distances have to be calculated by interpolation.
Type
ΙΙ
(large optical head, fixed adjusted): The fixed adjusted
optical head ΙΙ has a similar size as the focusable optical head ΙΙ but
with a fixed focusing distance (see table 3.5.1) as type Ι(other
distances can be realized on request).
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 M
90
(mm)
fiber
∅
0.6 mm
(MB 6)
Spot size M90 (mm)
fiber
∅
0.4 mm
(MB 7)
Spot size M90 (mm)
fiber
∅
0.2 mm
(MB 12)
Aperture D
(mm)*
Type I
120
3.3
2.2
1.2
7
260
7.5
5
2.6
7
700
21
14
7.2
7
Type II
(fixed
adjusted)
87
1.1
0.75
0.45
17
200
2.3
1.5
0.8
17
600
8.0
5.3
2.7
15
4500
63
42
22
15
Type II
(focusable)
88 to 110
1.2 to 1.7
0.8 to 1.1
0.45 to 0.6
17.5 to 15.5
95 to 129
1.4 to 2.0
0.9 to 1.3
0.5 to 0.75
16.5 to 14.5
105 to 161
1.7 to 2.6
1.1 to 1.7
0.6 to 1
15 to 13.5
200 to 346
2.3 to 4.2
1.5 to 2.8
0.8 to 1.5
17.5 to 15.5
247 to 606
3.0 to 7.8
2.0 to 5.2
1.1 to 2.7
16.5 to 14.5
340 to 4500
4.2 to 63
2.8 to 42
1.5 to 22
15 to 13.5
*)The aperture is the effective lens diameter of the optics. The aperture is dependent on the objective length which
changes if the focus distance is changed (only true for the focusable optical head II). The biggest aperture value belongs
to the fully extended objective, the smallest aperture value if the objective is turned to its smallest size. Intermediate
values have to be interpolated (e.g. calculating the spot size if the measuring distance varies from the adjusted value).

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The spot sizes, mentioned in the
table above, will only be
achieved at the measuring
distances of the corresponding
optics or with the focusable
optics at the adjusted distance.
Decreasing or increasing the
measuring distance enlarges the
spot size.
Spot sizes for intermediate distances that are not shown on the optical profiles may be
calculated using the adjoining formula.
Note:The InfraWin program includes a calculator (“IR calculator“) that roughly estimates
the unknown values.
Note: The pyrometer can measure objects at any distance, but it has to be at least as big as
the spot size of the pyrometer.
3.5.2 Adjusting the required measuring distance with optical head
Ι
or
ΙΙ
, fixed adjusted
A tape can be used to determine the distance between the object and pyrometer. The
measuring distance is always measured from the front of the lens.
If the LED is switched on, its smallest spot is in the measuring distance of the corresponding
optics or adjusted distance and it marks the center of the spot.
3.5.3 Adjusting the required measuring distance with optical head
ΙΙ
,
focusable
To adjust the correct measuring distance,
untighten the fixing nut and vary the length of
the optical head by turning the lens tube. When
correctly focused, the LED has its smallest spot size
(sharpest image). After adjustment, tighten the
fixing nut.
Aperture-Ø D
Ø M
Ø M
1
Ø M
2
a
a
2
a
1
3.5
D)DM(
a
a
M
1
1
−+=
D
D)
(M
a
a
M
2
2
+−=

IGA 320/23-LO Operating Manual Settings / parameter descriptions
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4Settings / parameter descriptions
The pyrometer is equipped with a wide range of settings for optimal adaptation to the required
measuring condition and to measure the temperature correctly.
All settings can be read and set only in the pyrometer parameters window of the
software InfraWin. Adjusting the settings at the instrument is not possible.
Selecting the pyrometer parameters window shows the current settings of the
pyrometer. Changing a value can be done either by typing a value in an input box or by
selecting a preset value from the list field.
4.1 Factory settings
Temperature display (°C / °F) = °C
Emissivity (ε) = 100%
Transmittance (
τ
) = 100%
Exposure time (t90) = min
Clear time (tClear) = off
Max / min = maximum value storage preset
Analog output (out) = 0 ... 20 mA
LED targeting light = active at Power-on
Sub range same as basic temperature range
Ambient temperature compensation = auto
Address = 00
Limit switch = Off
Baud rate = 19200 Bd
4.2 Basic range
Basic range automatically displays the total range of the pyrometer and can not be changed.
4.3 Material
The Material setting allows you to store the names of different measuring objects with their
emissivity values and to recall them from the list. You can also add and change the materials
listing through the text file "mat.txt" (provided in the folder InfraWin in the standard
Documents and Settings path of Windows, normally C:\ Documents and Settings \ <user
name> \ InfraWin).
4.4 Temperature display in °C or °F
Choose whether the temperature should be displayed in °C (Celsius) or °F (Fahrenheit).

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4.5 Emissivity ε
For a correct measurement, it is necessary to adjust the emissivity. This emissivity is the
relationship between the emission of a real object and the emission of a blackbody radiation
source (this is an object, which absorbs all incoming rays and has an emissivity of 100%) at the
same temperature. Different materials have different emissivities ranging between 0% and
100% (settings at the pyrometer between: 10 and 100%). As such, the emissivity is also
dependent on the surface condition of the material, the spectral range of the pyrometer, and
the measuring temperature. The emissivity setting of the pyrometer has to be adjusted
accordingly. Typical emissivity values of various common materials for the spectral range of the
instrument are listed below. The tolerance of the emissivity values for each material is mainly
dependent on the surface conditions. Rough surfaces have higher emissivities.
Measuring object
Emissivity [%]
(at 2.3 µm)
Measuring object
Emissivity [%]
(at 2.3 µm)
“Black body furnace“
100
Steel, molten
20 to 30
Extruded Aluminum
13
Nickel
15 to 20
Brass
18
Titanium, non-oxidized
50
Brass oxidized (tarnished)
65 to 70
Titanium, oxidized
75 to 80
Copper
5
Molybdenum
10
Copper, oxidized
70 to 80
Molybdenum, oxidized
75 to 80
Inconel
30
Black Carbon
95
Inconel, oxidized
85
Graphite
80 to 90
Oxidized Iron
85 to 90
Stoneware, glazed
60
Steel rolling scale
80 to 88
Porcelain rough
80 to 90
4.6 Transmittance
τ
Measurements through windows slightly attenuates the measuring signal (due to the
transmittance). To obtain correct measuring results, the transmission of the window must be
compensated. Alternatively, the emissivity εcan be adapted.
4.7 EmiAutoFind
If the true temperature of the measured object is known, you can calculate the emissivity of the
measured object using the Emi: AutoFind function.
4.8 Response time / exposure time (t90)
The exposure time is the time the measured temperature has to be present
after an abrupt change so that the output value of the pyrometer reaches a
given measurement value. The time taken is to reach 90% of the recorded
temperature difference. In the “min” position, the device operates using its
time constant.
The dynamic exposure time adjustment prolongs the exposure time at the
lower range limit, also if t90 is set to a lower value.
If the maximum value storage is selected and the measuring object has a low emissivity and the
measuring temperature is at the beginning of the range, a higher exposure time must be chosen
to prevent measurement errors. Longer exposure times can be used for the measurement of
objects, which have rapidly fluctuating temperatures to achieve constant temperature reading.
Settings:
min
0.01 s
0.05 s
0.25 s
1 s
3 s
10 s

IGA 320/23-LO Operating Manual Settings / parameter descriptions
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4.9 Clear time of the maximum / minimum value storage
(tCL)
If the maximum value storage is always switched on, the highest last
temperature value will be displayed and stored. The minimum value storage
saves the lowest measurement taken during a reading. The storage has to be
cleared at regular intervals and be replaced with a new and actual value.
This feature is particularly useful when fluctuating object temperatures cause
the display or the analog outputs to change too rapidly, or the pyrometer is
not constantly viewing an object to be measured. In addition, it may also be
beneficial to periodically delete and reset the stored maximum values.
The following settings are possible:
Off: The max. value storage is switched off and only momentary values are measured.
0.01...25 s: If any clear time between 0.01 s and 25 s is set, the maximum value is estimated and
held in double storage mode. After the entered time the storage will be deleted.
Extern: The external clearing can be activated and used within your own software using the
clear command “lx” (see Chapter 7,Data format UPP). In this case, the storage operates only in
single storage because only a single deletion mechanism is used.
Auto: The auto mode is used for discontinuous measuring tasks. For example, objects are
transported on a conveyer belt and pass the measuring beam of the pyrometer for only a few
seconds. In this case, the maximum value for each object has to be indicated. In this mode the
maximum value is stored until a new hot object appears in the measuring beam. The
temperature, which has to be recognized as hot, is defined by the low limit of the adjusted sub
range. The stored maximum value will be deleted when the temperature of the new hot object
exceeds the low limit from of the sub range by 1% or at least 2 °C. If a lower limit is not entered,
the maximum value storage will be deleted whenever the lower level of the full measuring range
has been exceeded.
Operation note: Depending upon which setting is selected, the maximum value storage will
work either in single storage mode or in double storage mode:
Single storage: The single storage mode is used when you want to reset the stored value
using your own software with the clear command “lx”. This mode allows a new value to be
established after each impulse from the reset signal.
Double storage: The double storage mode is automatically selected when entering the
reset intervals using the PC interface. This mode utilizes two memories in which the highest
measured value is held and is deleted alternately in the set time interval (clear time). The
other memory retains the maximum value throughout the next time interval. Disadvantages
of fluctuations in the display with the clock frequency are thereby eliminated.
Note: In the command structure, the maximum storage comes after the exposure
time. This results in:
• clear time ≤the adjusted response time is useless
• clear times must be at least 3 times longer than the response time
• only maxima with full maximum value can be recorded, which appear at
least 3 times longer than the response time.
Settings:
off
0.01 s
0.05 s
1 s
5 s
25 s
extern
auto

IGA 320/23-LO Operating Manual Settings / parameter descriptions
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4.9.1 Max / Min
When entering a reset time interval other than OFF, you will also need to determine whether to
activate the maximum “max” or the mimimum “min” storage value.
4.10 Analog Output
The analog output has to be selected according to the signal input of the
connected instrument (controller, PLC, etc.).
4.11 LED targeting light
If the pyrometer is supplied with power, the LED targeting light is automatically active. Once
connected, it can be adjusted even if the targeting light is off. Independent of this setting, the
targeting light can be switched on or off (targeting icon ) using the software InfraWin.
4.12 Subrange
You have the opportunity to choose a subrange (minimum span 51 °C) within the basic
measuring range of the pyrometer. This subrange corresponds to the analog output. Reduction
of the temperature range increases the accuracy of the analog output.
Also when setting the subrange, it is possible to fulfill the requirements of the “auto” clear
mode of the maximum value storage (see 4.9).
4.13 Ambient temperature compensation
The compensation of the ambient temperature can be set for temperatures
within the basic measuring range. This compensation is only used for very
few special applications. The standard setting of this parameter is “auto”,
because the temperature of the air around the pyrometer is normally the
ambient temperature of the measured object. Should the measured object be
placed in an area with a higher wall temperature (e.g. inside a furnace), the measurement might
be falsified (probably too high temperature indication). This influence can be compensated by
presetting the ambient temperature of the object (presetting within the measuring range of the
instrument).
After switching over to “man” the corresponding data field Tamb is activated so that the ambient
temperature value can be entered.
Attention: It has to be considered that this method only improves the results if the
ambient temperature at the place of the measured object is always constant and the
emissivity is well known.
Settings:
0 ... 20 mA
4 ... 20 mA
Settings:
auto
00 °C (32 °F)
.
.
.
70 °C (158 °F)

IGA 320/23-LO Operating Manual Settings / parameter descriptions
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4.14 Address
When connecting several pyrometers to one serial interface with RS485, it is
necessary for each instrument to have its own device address for
communication purposes. First, it is necessary to connect each instrument
separately to give it an address. After that, all instruments can be connected
and addressed individually.
Note: Only via own communication program with interface command (not
possible with InfraWin, because InfraWin automatically detects a connected
pyrometer): If parameters should be changed simultaneously on all pyrometers, the
global Address 98 can be used. This allows you to program all pyrometers at the
same time, regardless of the addresses that have already been assigned. If the address
of a pyrometer is unknown, it is possible to communicate with it using the global
Address 99 (connect only one pyrometer).
4.15 Limit switch (SP1)
The pyrometer is equipped with a switch contact (opto relays; max. 50 V DC, 0.2 A; max. power
300 mW), controlled from the measuring signal. The contact is activated with:
Close above: The contact closes (switches to ground), if the temperature entered in the SP1
box is exceeded. If the temperature falls below that value minus the hysteresis the contact opens
(a hysteresis between 2 and 20 °C can be set to avoid oscillating of the switch in the switch
point).
Close below: The contact closes (switches to ground), if the temperature falls below the
entered value in the SP1 box. If the temperature exceeds that value plus the hysteresis the
contact opens (a hysteresis between 2 and 20 °C can be set to avoid oscillating of the switch in
the switch point).
4.16 Operating hours
Shows the operation time that the pyrometer has been in use.
Settings:
00
.
.
.
97

IGA 320/23-LO Operating Manual Software InfraWin
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5Software InfraWin
The operating and analyzing InfraWin software is included with delivery of the pyrometer. In
addition to allowing you to make parameter adjustments via PC, the InfraWin software also
provides temperature indication, data logging, and measurement analysis features.
A software description can be found in the program’s help menu. Click on the F1 button after
loading InfraWin or click on the ? in the menu bar.
The latest version is available for free as download from the homepage www.lumasenseinc.com.
5.1 Connecting the pyrometer to a PC
The program InfraWin can operate up to two devices. Two devices using RS485 may be operated
simultaneously by the same interface, if two different addresses have been properly entered
(see section 4.14 Device Address for more information).
5.2 Installation
To install the InfraWin software, select setup.exe from the InfraWin-CD or from the downloaded
and unpacked zip file from the internet and then follow the installation instructions.
5.3 Program start
The first time you load InfraWin 5, you will be prompted to select a default language. The
InfraWin software is available in German, English, Spanish, French, Portuguese, and Chinese.
Once installed, click Language/Languages if you would like to select another language.

IGA 320/23-LO Operating Manual Maintenance
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6Maintenance
6.1 Safety
Attention during pyrometer services: Should the pyrometer be integrated in a
running machine process, the machine should be switched off and secured against
restart before servicing the pyrometer
6.2 Service
The pyrometer does not have any parts, which require regular service, only the lens has to be
kept clean. The lens can be cleaned with a soft cloth in combination with alcohol (do not use
acid solutions or dilution). In addition, standard cloths for cleaning glasses or photo objectives
can be used.