IMPAC Pyrometer
IPE 140

Highly accurate, fully digital, fast Pyrometer with focusable optics for non-contact temperature measurements on metals, ceramics, graphit etc. between 5 and 1200 °C

IMPAC Pyrometer IPE 140
IMPAC Pyrometer IPE 140 (Front)
IMPAC Pyrometer IPE 140 laser
IMPAC Pyrometer IPE 140 laser (back)
IMPAC Pyrometer IPE 140 (view finder)
IMPAC Pyrometer IPE 140 (view finder side)
IMPAC Pyrometer IPE 140 (different optics)

Key Features

  • Temperature ranges between 5 and 1200 °C
  • Short response times, min. 1.5 ms
  • Extremely small spot sizes, min 0.7 mm
  • Built in digital display with temperature indication
  • Optimized thru-lens view finder  or laser targeting light
  • Test current output
  • Housing with precision mounting rail for safe mounting and accurate alignment
  • Interface RS232 / RS485 switchable
  • Focusable optics


The IPE 140 are digital, highly accurate pyrometer for non contact temperature measurement on metals, ceramics, graphite etc. For optimal match of the instrument to the application different focusable optics with extremely small spot sizes are available.

The pyrometer parameters can be selected via the integrated key pad, the settings are indicated on the built-in LC-Display. In measuring mode the actual temperature is indicated.

The pyrometers are equipped with RS232 and RS485 serial interfaces (switchable inside the pyrometer). This enables additionally the reading of temperature and pyrometer parameters via the provided InfraWin PC software.

If necessary the parameters also can be changed via PC. A laser targeting light of thru-lens view finder for exact alignment of the pyrometer is available.

Typical Applications

  • preheating
  • annealing
  • tempering
  • welding
  • forging
  • hardening
  • sintering
  • melting
  • soldering
  • rolling
  • brazing
  • normalizing


Technical Data

Temperature ranges:

MB 3.5: 5 to 350 °C            

MB 5: 5 to 500 °C            

MB 10: 30 to 1000 °C         

MB 12: 50 to 1200 °C          

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

Spectral ranges:

3 to 5 µm

Signal processing: alternating light signal, digitized immediately


(ε = 1, t90 = 1 s, Tamb. = 23°C)

MB 3.5:
below 250°C: 1°C
above 250°C: 0.4% of reading in °C +1°C

All others:
below 400°C: 2.5°C
above 400°C: 0.4% of reading in °C +1°C


(ε = 1, t90 = 1 s, Tamb. = 23°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
MB 5 Foc. Optics 1-PE a=105...150 mm
MB 5 Foc. Optics 2-PE a=200...440 mm
MB 5 Foc. Optics 3-PE a=345...4300 mm
MB 10 Foc. Optics 1-PE a=105...150 mm
MB 10 Foc. Optics 2-PE a=200...440 mm
MB 10 Foc. Optics 3-PE a=345...4300 mm
MB 12 Foc. Optics 1-PE a=105...150 mm
MB 5 Foc. Optics 0-PE a=71...90 mm
MB 12 Foc. Optics 2-PE a=200...440 mm
MB 12 Foc. Optics 3-PE a=345...4300 mm

Display of optical path:

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