Optris CSlaser hs LT Highly Sensitive IR Sensor


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Optris CSlaser hs LT Infrared Pyrometer

The CSlaser series of sensors are the lowest cost in our range of infrared pyrometers with the innovative dual laser aiming system which gives the user both the position of the measurement and also its size as the lasers are factory configured to match the optics of the sensor. The sensor and electronics are housed in one convenient housing and connected to your instrumentation by standard cable. Emissivity is adjusted easily via two switches in the back of sensor accessed by four screws.
The CSlaser hs LT model is our most sensitive sensor with a temperature resolution of just 0.025K making it ideal for applications where it is necessary to monitor the smallest of temperature changes. A selection of optics allow measuring spot sizes to be as small as 1.4mm with the CF1 selection or alternatively the SF optics with an optical resolution of 50:1 give moderate spot sizes at further distances. The sensor has a wide measuring range of -20 to +150°C and an industry standard 4-20mA output. It is also easy to connect our innovative USB interface which allows simple configuration and on screen measurement with the included Compact Connect Windows software.

Take a look at what makes the CSlaser LT such a great infrared pyrometer.

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


New performance standard for IR measurement of
smallest temperature differences of 25 mKs
Single-piece, robust design for easy installation
into your process system
Standard two-wire interface for reliable data
transfer and easy integration into a PLC
Innovative double-laser sighting for exact marking
of measurement targets
Fast sensor parameterisation and real-time
measurement via USB
Dependable performance in ambient temperatures up to 85°C
without additional cooling
Wide power range: 5-28 V DC


Environmental rating: IP 65 (NEMA-4) front mountable in vacuum processes (up to 10-3 mbar)
Ambient temperature: -20°C to 85°C (50°C with laser ON)
Storage temperature: -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: 600g


Temperature range: -20 to 150°C (scaleable via software)
Spectral range: 8 – 14 μm
Optical resolution
(90 % energy):
System accuracy: ± 1% or ± 1°C at ambient temperature (1)
Repeatability: ± 0.3% or ± 0.3°C (1)
Temperature resolution: 0.025 K (at Tobj >20°C and time constant > 0.2 s)
Response time (95%): 150ms
0.100 – 1.100 (adjustable via 0-5 V DC
input or software)
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


1) Independent of supply voltage

Output/analogue: 4-20 mA
Loop resistance: max. 1000 Ω (1)
Output / alarm: 0 – 30 V / 500 mA
Output/ digital: uni-/ bidirectional, 9,6 kBaud, 0/3 V Level, USB optional
Cable length: 3 m / 8 m / 15 m (connector version only)
Current draw (laser): 45 mA at 5 V
20 mA at 12 V
12 mA at 24 V
Power supply: 5 – 28 V DC