IMPAC Pyrometer
IS 12-Al & IS 12-Al/S

Digital pyrometer for non-contact temperature measurement of aluminum between 350 and 1050°C. Type -S with built-in scanner.

Pyrometer IMPAC IS12-AL Front Back View
Pyrometer IMPAC IS12-AL Back View
Pyrometer IMPAC IS12-AL Front View
Pyrometer IMPAC IS12-AL Back Display View
Pyrometer IMPAC IS12-AL Side Left View
Pyrometer IMPAC IS12-AL Side View

Key Features

  • Pyrometer specially designed for measurements of aluminum
  • 2 wide temperature ranges between 350 and 1050 °C
  • Spectral range: narrow band in the near infrared
  • Short response time < 8 ms
  • Small spot sizes
  • Analog output 0 to 20 mA or 4 to 20 mA
  • Digital interface RS232 or RS485
  • Integrated maximum value storage
  • Built-in digital display


The IS 12-Al is a development of the pyrometer IS 12, specially designed for the measurement of aluminum. The robust die-cast housing with protection class IP65 is designed for the use in industrial environments.

The parameters of this digital instrument can be set directly via push buttons on the rear side of the instrument. The built-in digital display indicates the corresponding parameters or the actual temperature reading in measuring mode. The instrument’s parameters can also be adjusted via digital interface with the optional available portable parameterizing device HT 6000 or in combination with the PC software InfraWin. The software additionally allows the display and recording of temperature values graphically and numerically.

The IS 12-Al can be aligned exactly on the measuring object with the optimized thru-lens view finder with spot indication. For exact alignment of the measuring object the instruments are additionally equipped with a targeting light.

Typical Applications:

  • Aluminum extrusion 
  • Rolling 
  • Billet heating and other heating processes


Technical Specifications


Temperature Ranges

MB 9           350 to 900 °C 

MB 10.5      400 to 1050 °C    

Sub Range: Any range adjustable within the temperature range, minimum span 51 °C
Spectral Ranges: narrow band in the near infrared
Response time t90: < 1.5 ms (with dynamical adaption at low signal levels) adjustable up to 10 s
Signal Processing: Fotoelectric current, digitized immediately



0.3% of measured value in °C + 1°C (ε=1, t90=1 s, TAmb=15 to 40°C, TM ≥ 400°C (MB 9), TM ≥ 450°C (MB 10.5))

Ambient Temperature Dependency: tk ≤ 0.01% of reading (in °C) x dT (temperature of pyrometer housing - 23 °C)
Resolution: interface and display: 0.1°C,
analog output: < 0.025 % of temperature range
Repeatability: 0.1% of measured value in °C + 1°C
Emissivity ε: 0.100 ... 1.000 in 1/1000 steps
Exposure Time t90: < 1 ms ("L" temperature ranges with dynamical adaptation at low signal levels), adjustable up to 10 s
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

Sighting: built-in parallax free thru-lens view finder; additionally laser targeting light (max. power level < 1 mW, λ = 630-680 nm, CDRH class II)

Note: The calibration / adjustment of this pyrometer is carried out in accordance with VDI/ VDE 3511, Part 4.4. See for more information. 


Analog Output:

linear 0 ... 20 mA or 4 ... 20 mA, DC, switchable; load max. 500 Ohm

Serial Interface: switchable at the pyrometer: RS232 or RS485 addressable, half duplex; baud rate 2.4 up to 115 kBd
Display: built-in 5 digit LED display, additional function LEDs
Test Current Output: fixed 10 mA
Limit switches: 2 relay outputs (change-over contacts), switch power max. 30 W (Imax: 1 A, Umax: 60 V DC)
Control Panel: 4 keys, operate with tip of ball-point pen
Parameters: Adjustable at the instrument or via serial interface:
emissivity e, response time t90, clear time for maximum value storage tCL, subrange, 0 to 20 or 4 to 20 mA, switch points for limit switches, °C / °F, interface RS232 or RS485, address, baud rate, test current output
Additionally adjustable (only via interface): keyboard lock, recalibration (with special software)
Power Supply: 24 V DC (15 to 40 V DC) or 24 V AC (12 to 30 V AC), 48 to 62 Hz
Power Consumption: max. 7 W
Isolation: power supply, digital interface, analog output are galvanically isolated against each other and housing
Ambient Temperature: 0 ... 70 °C 
Storage Temperature: -20 to 70 °C
Relative Humidity: Non condensing conditions
Protection Class: IP65 (DIN 40 050)
Weight: 2.2 kg
CE-Label: according to EU directives about electromagnetic immunity
IMPAC Pyrometer IS 12-Al & IS 12-Al/S
MB 9: Fixed Optics 1 a=112 mm
MB 9: Fixed Optics 2 a=240 mm
MB 9: Fixed Optics 3 a=660 mm
MB 9: Fixed Optics 4 a=1300 mm
MB 9: Fixed Optics 5 a=5600 mm
MB 10.5: Fixed Optics 1 a=80 mm
MB 10.5: Fixed Optics 2 a=160 mm
MB 10.5: Fixed Optics 3 a=250 mm
MB 10.5: Fixed Optics 4 a=660 mm
MB 10.5: Fixed Optics 5 a=1300 mm
MB 10.5: Fixed Optics 6 a=5600 mm

Display of optical path:

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