Selection Guide: Infrared Radiation Pyrometer CT18

Model Spectral Response/um tmin..tmax/°C Typical Application
CT18.03 0.95 um 450...3000 metals, metal oxides, semiconductors, glass, graphite, silicon, hardening, soldering, forging, induction heating, epitaxy, casting, annealing
CT18.03LL 0.95 um fiber 500...3000 metals, metal oxides, semiconductors, glass, graphite, silicon, hardening, soldering, forging, induction heating, epitaxy, casting, annealing
CT18.04 1.6 um 200...2900 metals, metal oxides, semiconductors, glass, graphite, silicon, hardening, soldering, forging, induction heating, epitaxy, casting, annealing
CT18.04LL 1.6 um fiber 250...2700 metals, metal oxides, semiconductors, glass, graphite, silicon, hardening, soldering, forging, induction heating, epitaxy, casting, annealing

CT18-Series General Specifications

Temperature range

Depends on model, minimum and maximum measuring temperature. (See table above)
Temperature resolution (NETD)*

Depends on measured temperature and response time, typical value 0.1°C (at 100 ms, 350°C, ε = 1)
Accuracy (uncertainty)

+/- 0.5°C plus 0.5% of the difference between target and sensor head temperature
Long-term stability

Better than 0.01% of the absolute measured value per month
Lenses* Focusable from 132 mm (55 mm with fiber)
Field of view*

From 0.4 mm diameter, depends on lens
Aiming accessories* Laser pointer or lens view finder
Emissivity setting

0.050 to 1.000 in 0.001-steps
Response time

From 1 ms to 10 s (0.001, 0.003, 0.01, 0.03, 0.1, 0.3, 1, 2, 10 s)
Analog output

Linear 0-20 mA or 4-20 mA or 0-10 V scalable temperature span => 200°C

Actual value, max-value, or min-value
Serial Interface (Switchable)

RS232-interface, bi-directional, 9.6 kbps to 230 kbps and

RS485 interface, Half-Duplex or Full-Duplex, 9.6 kbps to 230 kbps for programing and data transfer
Power requirements 10 VDC to 30 VDC, approx. 2.5 W
Permissible ambient temperature

-20°C to 70°C (-25 to +200 °C for fiber head)

With protective and cooling housing WK15 up to 300°C
Storage temperature

-40°C to 85°C
Housing protection/weight Stainless steel, protective class IP65 (IEC), (NEMA 4 equivalent)


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