IMPAC Pyrometer
IN 5

For non-contact temperature measurement of non-metallic surfaces or painted, coated or anodized metals with temperature ranges between -32 and 900 °C.

Pyrometer IMPAC IN 5 Front View
Pyrometer IMPAC IN5 back view

Key Features

  • Pyrometers in two-wire form with analog output 4 to 20 mA, several temperature ranges available 
  • High accuracy due to digital linearisation of the output
  • Small spot sizes, min. 2 mm
  • Adjustable exposure time 
  • Compact housing


The pyrometers of series IN 5  are specially designed for non-contact temperature measurements on non-metallic surfaces and also on painted, coated or anodized metals.

These instruments are digital pyrometers in two wire format. This format combines the high accuracy of the digital signal processing with the simple connection and operating with two wires.

The solid and robust design of the instruments guarantees high operational safety even in rough industrial environments.

For optimal match of the instrument to the application (size of the measuring object, distance) different optics are available.

Typical Applications:

  • Plastics
  • Fluids
  • Rubber
  • Painted parts
  • Paper
  • Asphalt
  • Ceramics
  • Wood
  • Textiles
  • Glass
  • Food
  • Coated metals


Temperature range:

 (MB 1)   0 to 100°C                        (MB5)         0 to 500 °C
 (MB 2)   0 to 200°C                        (MB9)         0 to 900 °C
 (MB 3)   0 to 300°C                        (MB 0.5)  -32 to  50  °C
 (MB 4)   0 to 400°C                        (other MB on request)

Sub range: Any range adjustable within the temperature range, minimum span 51°C
Spectral Range: 8 to 14 μm
IR Detector: Thermopile
Data handling: Digital
Optics: Germanium (Ge)
Power Supply: : 24 V DC (10 to 30 V)
Power Consumption: max. 20 mA
Analog Output: 4 to 20 mA (linear)
Load: Max 700 Ω at 24 V (max. 100 Ω at 12 V)
Parameters Adjustable on the pyrometer: Emissivity, exposure time. 
Emissivity ε: 0.2 ... 1 adjustable
Exposure Time t90: 0.08 s; adjustable in the pyrometer: 0.5 s; 1 s; 2 s; 5 s,

Measurement uncertainty:

Dependent on object temperature T and ambient temperature Tamb                                (ε = 1, t90 = 1 s)

T= -32 to 0°C:  

1.5°C (Tamb = 15...30°C); 2°C (Tamb = 0...15 or 30...63°C)

T= 0 to 300°C:  

0.6% of reading in °C or 1°C (Tamb= 15...30°C) *

1% of reading in °C or 1.5°C (Tamb= 0...15 or 30...63°C) *

T= 300 to 900°C:

1% of reading in °C (Tamb= 15...30°C)

1.3 % of reading in °C (Tamb= 0...15 or 30...63°C)

*) Whichever value is greater. The instrument must be at a const. amb. temp. for min. 15 min. and has to be connected to the power supply

Repeatability: (ε = 1, t90= 1 s)
0.3 % of reading in °C or 0.6 °C
(Whichever value is greater. The instrument must be at a constant ambient temperature for a minimum of 15 minutes)
Noise Equivalent Temperature Difference
(NETD): (ε = 1, Tamb= 23°C)
At t90= 80 ms: 0.2°C (at 23°C measuring temperature)
At t90= 1 s: 0.05°C (at 23°C measuring temperature)
Ambient Temperature: 0 to 70°C
Storage Temperature: -20 to 70°C
Housing: Stainless steel
Relative Humidity Non condensing conditions
Weight: 410g
Protection class: IP65 (DIN 40050)
CE-label: According to EU directives about electromagnetic immunity
IMPAC Pyrometer IN 5
Optics 100 a=100 mm
Optics 300 a=300 mm
Optics 800 a=800 mm

Display of optical path:

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