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 
  • Adjustable exposure time 
  • Compact housing


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

The instruments differ in their specification: the IN 5 is a digital pyrometer in two wire format. This format combines the high accuracy of the digital signal processing with the simple connection and operating with two wires.

Additionally to the analog output the plus types are digital pyrometers equipped with a digital interface, enabling temperature indication and storage on a PC. Also a temperature sub range can be configured and the instrument parameters can be adjusted remotely.

The version IN 5-L plus is equipped with optics with better fields of view for the measurements of small objects.

The high-speed version IN 5-H plus has a shorter exposure time of only 10 ms and is suited for fast measuring tasks.

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

For a precise alignment of the pyrometers to the measuring object, plus types are equipped with a laser targeting light.

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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