IMPAC Pyrometer
IPE 140/45

Special version of Pyrometer IPE 140 in a spectral range of the CO2 absorption band for the measurement of CO2 containing combustion gas. Temperature range: 400 to 2000 °C.

IMPAC Pyrometer IPE 140/45

Key Features

  • Temperature range: 400 to 2000 °C
  • Measurement of flame temperatures
  • Measurement of combustion gas temperatures


The IPE 140/45 is a special pyrometer for the temperature measurement of hot, CO2 containing combustion gas.

The pyrometer is able to measure hot combustion gas (with typically approx. 10% CO2) with a thickness of 40 cm.

Like the basic IPE 140, the IPE 140/45 is a highly accurate digital pyrometer. The narrow spectral range in the CO2 absorption band enables the measurement of flames and hot combustion gases.

For optimal match of the instrument to the application 3 different focusable optics are available.


Technical Data

Temperature ranges:

MB 20    400 ... 2000°C  

Subrange: any range adjustable within the temperature range, minimum span 51°C

Spectral ranges:

CO2 absorption band for hot CO2 gas

Signal processing: photoelectric current, digitized immediately


(Tamb.=25 °C, ε=1, t90=1s)

Up to 1300 °C:    0.6% of reading in °C

Above 1300 °C:  0.8% of reading in °C



MB 3.5:      0.1% of reading in °C + 0.2°C

All others:   0.1% of reading in °C + 1°C 

Resolution: interface and display: 0.1°C, analog output: < 0.03 % of temperature range
Exposure time t90: 1.5 ms, with dynamical adaption at low signal levels; adjustable up to 10 s
Emissivity ε: 10 to 100% adjustable in steps of 0.1%
Analog output: linear 0 to 20 mA or 4 to 20 mA, DC, switchable; load max. 500 Ohm
Test current output: fixed 10 mA (for 0 to 20 mA analog output) or fixed 12 mA (for 4 to 20 mA analog output)
Power supply: 24 V AC/DC (12 to 30 V AC/DC) (AC: 48 to 62 Hz)
Power consumption: max. 6 VA
Serial interface: switchable inside the pyrometer: RS232 or RS485 addressable, half duplex; baud rate up to 115 kBd
Parameters: adjustable at the instrument or via serial interface: emissivity; response time; analog output; address; baud rate; waiting period tW; temperature unit °C or °F; setting of the maximum value storage; temperature sub range
Maximum value storage: single or double storage; cleared by: preselected time interval; external deletion contact or via digital interface; automatically with the next measuring object
Isolation: power supply, digital interface, analog output are galvanically isolated against each other and housing
Protection class: IP65 (DIN 40 050)  
Sighting: laser targeting light (max. power level < 1 mW, λ = 630-680 nm, CDRH class II) or thru-lens view finder
Ambient temperature: 0 to 53°C at housing
Storage temperature: -20 to 60°C
Weight:  approx. 550 g
Dimensions [mm]: 195 x 56 x 62.5 (l x W x D)
Mechanical tests: vibration proof corresponding DIN EN 60068-2-6, shock proof corresponding DIN EN 60068-2-27
Relative humidity: Non condensing conditions
CE-label: according to EU directives about electromagnetic immunity




IMPAC Pyrometer IPE 140/45
Focusable Optics 1-PE a=115...170 mm
Focusable Optics 2-PE a=210...500 mm
Focusable Optics 3-PE a=360...10000 mm

Display of optical path:

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