Optris CT Hot

Optris CT Hot for high ambient temperature to 250°C

Optris CThot sensing head for high ambient temperatures

Single point_interfaces resized 2

Optris CThot LT Miniature Infrared Pyrometer

The Optris CThot LT is an excellent general purpose miniaturised pyrometer with programmable electronic box for applications with extremely high ambient temperatures up to 250°C whilst being able to measure temperatures up to 975°C.
The sensor has the smallest sensing head available in the world at just 29.5mm diameter x 55mm long and allows the sensor to be installed in the 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.
Calibration as well as a full range of accessories are available for the Optris Compact infrared pyrometers.


The new infrared thermometer for hot environmental temperatures up to 250°C without any need of cooling
A variety of applications in dryers, ovens, heat treatment lines in the metal and glass industry, paper, plastic and textile manufacturing and semiconductor processing in the temperature range of -40°C to 975°C and a response time up from 100 ms
Selectable 10:1 or 2:1 optics, compact sensor head size
Narrow beam optics allows oblique aiming to avoid material thickness dependent temperature readings
Electronics housing for programming sensor settings and local temperature display
Analog outputs 0/4 – 20 mA, 0 – 5/10 V , thermocouple type K or J and integrated digital interfaces (optional) Profibus DP, USB, RS232, RS485 or CAN

General Specifications

Environmental rating: IP 65 (NEMA-4)
Ambient temperature: Sensing head:-20°C to 250°CElectronics: 0°C to 85°C
Storage temperature: Sensing head:-40°C to 250°CElectronics: -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 40g (without massive housing)electronics 420g

Measurement Specifications

Temperature range: -50°C to 975°C(scaleable via programming keys or software)
Spectral range: 8 – 14 μm
Optical resolution (90 % energy): 10:1 or 2:1
System accuracy: ±1% or ±1.5°C at ambient temperature (1)
Repeatability: ± 0.5% or ± 0.5°C at ambient temperature (1)
Temperature resolution: 0.25°C
Response time (4): 100ms
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 with dynamic noise compression

2) at object temperatures 20°C

Electrical Specifications

Output/analogue: channel 1: 0/4 – 20 mA, 0-5/10 V, thermocouple J or Kchannel 2: sensing head temperature (-40 – 250°C as 0 – 5 V or 0 – 10 V), alarm output
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 impedancethermocouple 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

Optical Specifications




CompactConnect Software

Compact Connect Software