Optris CT P7 Infrared Temperature Sensor for Measurement of Thin Film Polymers

With a spectral range of 7.9 μm, the Optris CT P7 is a miniaturised pyrometer with programmable electronic box which is specifically designed to measure the temperature of thin plastic film materials such as  PET, Polyurethane, PTFE, FEP and Polyamide in the range 0 to 710°C.

The sensor has a miniature sensing head which is just 29.5mm diameter x 55mm long and allows the sensor to be installed in applications where space is at a premium. The separate electronics enclosure provides a full range of outputs and inputs as standard including Voltage, mA and Thermocouple. It is also possible to incorporate an interface card which provides simple integration into your existing process control equipment. Options include Ethernet, Profibus, RS485 and USB interface and Compact Connect software.

Temperature measurement of thinner plastic films such as Polyethylene, Polypropylene and Polystyrene in the range 50°C to 400°C is provided by the NEW Optris CT P3 with its specific spectral range of 3.43 μm. For thicker materials it is perfectly acceptable to use the Optris CT LT range of sensors. If you require any selection assistance please do not hesitate to ask.


Calibration as well as a full range of accessories are available for the Optris Compact infrared pyrometers.

Learn more about the Optris CT in less than 60 seconds…

OPtris CT P3 P7 infrared temperature sensor for thin film plastics

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  • Special wave length for accurate temperature measurement of thin plastic materials such as PET, PU, PTFE or PA.
  • Rugged and usable up to 85°C ambient temperature without cooling.
  • Separate electronics with easy accessible programming keys and LCD backlit display.
  • Selectable analogue output: 0/4 – 20mA, 0-5V, 0-10V, thermocouple type K or J
  • Optional USB, RS485, RS232 interface, relay outputs (2x optically isolated), CAN-Bus, Profibus DP, Ethernet
Environmental rating: IP 65 (NEMA-4)
Ambient temperature: Sensing head:-20°C to 85°C Electronics: 0°C to 85°C
Storage temperature: Sensing head:-40°C to 85°C Electronics: -40°C to 85°C
Relative humidity: 10 – 95%, non condensing
Vibration: IEC 68-2-6: 3 G, 11-200 Hz,
any axis
Shock: IEC 68-2-27: 50 G, 11 ms,
any axis
Weight: sensing head 200g (with massive housing) electronics 420g
Temperature range (1):
0°C to 710°C (scaleable via programming keys or software)
Spectral range: 7.9μm
Optical resolution CT (90 % energy): 10:1
System accuracy: ± 1% or ± 1.5°C (1)(2)
Repeatability: ± 0.5% or ± 0.5°C (1)(2)
Temperature resolution: 0.5K
Response time: 150ms
Emissivity/Gain: 0.100 – 1.100 (adjustable via 0-5 V DC
input or software)
Transmissivity: 0.100 – 1.100 (adjustable via software)
Signal processing: peak hold, valley hold, average;
extended hold function with
threshold and hysteresis
Software: optris Compact Connect

1) whichever is greater
2) at object temperatures ≥ 25°C

Output/analogue: Channel 1: 0/4 – 20 mA, 0-5/10V, thermocouple
J or K, alarm.
Output/alarm: 24 V/50 mA (open collector)
Optional Alarm Output: relay: 2 x 60 V DC/42 V AC; 0.4 A;
optically isolated
Outputs/digital (optional): USB, RS232, RS485, CAN-Bus, Profibus DP, Ethernet
Output impedances: mA max. 500 Ω (with 8-36 V DC) mV min. 100 kΩ load impedance thermocouple 20 Ω
Inputs: programmable functional inputs for external emissivity adjustment, ambient
temperature compensation, trigger (reset of hold functions)
Cable length: 3m (standard), 8m, 15m
Current draw: max. 100mA
Power Supply: 8-36 V DC
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