IGAR 6 Advanced

Stationary, digital ratio pyrometer with possible combination of 1-color and 2-color measurement for non-contact temperature measurements in ranges between 100 and 2000 °C

IMPAC 测温仪 IGAR 6 Advanced
IMPAC 测温仪 IGAR 6 Advanced with Through-Lens Sighting
IMPAC 测温仪 IGAR 6 Advanced with Laser Aiming

Key Features

  • Wide temperature ranges and various operating modes:
  • 1-color mode: 100 ... 2000 °C
  • 2-color mode: 250 ... 2000 °C
  • Smart mode: automatic (temperature-dependent) transition from 1-color to 2-color mode
  • “Dirty Window” Warning
  • Fully digital core for sub-ranging and adopted analog output
  • Very fast 2 ms response time for highly dynamic processes
  • Best optics in its class with manual focus capability
  • 4 digit LED display
  • Robust, stainless steel sensor for harsh environments (IP65/NEMA4)


The IGAR 6 Advanced pyrometer is a digital, compact and fast pyrometer which - depending on the individual requirements - can be operated in different modes. Besides the 1-color mode (100 ... 2000 °C) a 2-color mode (250 ... 2000 °C) or a special Smart mode can be selected. In Smart mode, the measurements in the range between 100 ... 250 °C will be taken in 1-color mode whereas in the range between 280 ... 2000 °C the measurements will be based on the 2-color method (ratio method). In the range from 250 to 280 °C, a continuous transition from 1-color to 2-color measurement automatically takes place.

In 2-color mode (ratio method) two adjacent wavelengths are used for the temperature determination. This technique offers the following advantages compared to standard 1-color pyrometers: The temperature measurement is largely independent of the object’s emissivity and in wide ranges unaffected by dust and other contaminants in the field of view. The measuring object can be smaller than the spot size, measurements through dirty viewing windows are possible up to a certain contamination.


When the instrument is operated in 2-color or Smart mode, InfraWin provides the option to automatically determine the emissivity. By pushing the button “Emi=xxx% Accept”, this emissivity is set and used for all measurements in 1-color mode or in Smart mode below 280 °C.

The response time of only 2 ms facilitates the measurement of fast processes. The IGAR 6 is equipped  with a built-in “dirty window” warning.

The pyrometer can be connected to a PC through an RS485 to USB connection, enabling parameter adjustments to be made using the InfraWin software. This can be used for temperature indication, data logging and further analyzing of complete temperature processes.

Typical Applications

  • Steel Making
  • Metal Processing - e.g. Induction
    Processes: Hardening, Tempering,
    Annealing, Soldering, Brazing,
    Welding, Froging, etc.
  • Metal Processing - Wire/Rod Mill,
    Heating and Cooling Processes
  • Sintering
  • Vacuum Processes - e.g. Coating,
    Brazing, etc.
  • Laser Applications


Technical Specifications

Measurement Specifications
Temperature Ranges: 1-color and Smart mode: 100 to 2000 °C
2-color (ratio) mode: 250 to 2000 °C
Sub Range: Any range adjustable within the temperature range, minimum span 50 °C
Spectral Ranges: Channel 1: 1.5...1.6 µm;
Channel 2: 2.0...2.5 µm 
Resolution: 0.1 °C or 0.2 °F at interface; < 0.0015% of selected sub range at analog output, min. 0.1 °C, 16 bit; 1 °C or 1 °F on display
Emissivity ε: 0.050 to 1.000 in steps of 1/1000 (1-color mode)
Transmittance τ: 0.050 to 1.000 in steps of 1/1000 (1-color mode)
Emissivity Slope K: 0.600 to 2.000 in steps of 1/1000 (2-color mode)
Measurement Uncertainty:
(ε = 1, t90 = 1 s,
Tamb. = 25 °C)
< 1500 °C: 0.4% of reading in °C + 2 °C
> 1500 °C: 0.8% of reading in °C
(ε = 1, t90 = 1 s,
Tamb. = 25 °C)
0.2% of reading in °C + 1 °C


Optical Specifications
Sighting: Built-in laser aiming light (max. power level < 1 mW, λ = 630 to 680 nm, CDRH class II) or through-lens sighting
Optics: Manually focusable from rear cover measuring distance a = 210 to 5000 mm
Distance Ratio: approx. 100 : 1
Environmental Specificatons
Protection Class: IP 65 IEC 60529 (value in mated condition)
Operating Position: any
Ambient Temperature: 0 to 65 °C at housing
Storage Temperature: -20 to 80 °C
Relative Humidity: Non condensating conditions
Weight: 0.6 kg
Housing: Stainless steel
CE Label: According to EU directives about electromagnetic immunity
Note: MB is a shortcut used for temperature range (in German: Messbereich)
Connection: 12-pin connector
Display (in rear cover): LED, 4 digit matrix, 5 mm high for 2-color or 1-color temperature signal or measuring distance
Parameters: Adjustable via interface:
2-color / 1-color temperature signal, accordingly emissivity slope or emissivity, temperature sub range, settings for maximum value storage, address, baud rate, switch off limit, "dirty window" warning, transmittance, response time t90, 0 to 20 mA or 4 to 20 mA analog output range, °C / °F
Readable via interface: measured value, internal temperature of the unit, measuring distance
Analog Output: Adjustable 0 to 20 mA or 4 to 20 mA, linear (via digital interface)
Digital Interface: RS485 addressable (half-duplex) Baud rate: 1200 to 115.2 kBd (on request RS232, not addressable)
Switch Off Limit: 2% to 50% (adjustable via interface)
"Dirty Window" Warning:  Relay contact, max. continuous current 0.4 A, setting of the warning level: 0 (off) to 99%
Response Time t90: 2 ms (with dynamic adaption 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), via interface, automatically with the next measuring object, external contact, hold-function


Power Supply: 24 V DC ± 25%, ripple must be less than 50 mV
Power Consumption: Max. 3 W ( incl. laser)
Load (analog output): 0 to 500 Ω
Isolation: Power supply, analog output and digital interface are electrically isolated from each other
IMPAC 测温仪 IGAR 6 Advanced
Focusable Optic a=210 ...5000 mm