CST-HSB4300 Head-Mounted Temperature Transmitter

Temperature measurement

The CST-HSB4300 is a high-accuracy, head-mounted, loop-powered programmable temperature transmitter designed for TC/RTD (Pt100) and thermocouple inputs. It converts the sensor input signal into a linear 4 to 20 mA current output for direct integration into industrial control and monitoring systems. Input type, measuring range, and upscale/downscale sensor-break (burnout) detection are fully field-configurable using the CSI-USB1 configuration kit. The unit is designed and tested to comply with the applicable European CE marking directives.

Linear Resistance / TC Input

 

Type Min. Value Max. Value Min. Span
TC -195 °C +1820 °C 25 °C
Pt100 -195 °C +845 °C 25 °C

 

Sensor type TC, RTD
Sensor range -195 to +845 °C (18 to 390 Ohm)
Sensor connection Screw terminal
Minimum span 25 °C
Linearisation EN 60751 (IEC 751) standard / JIS C 1604
Measurement accuracy 0.2 °C ± 0.05 % of reading
Thermal drift ±0.02 °C / °C
Excitation current < 200 µA
Lead resistance effect 0.002 °C / Ohm
Maximum lead resistance 20 Ohms per leg

 

 

 

Output

 

Output type 2-wire (4 to 20) mA current loop
Output range (4.0 to 20.0) mA
Output connection Screw terminal
Maximum output 21.5 mA (high burnout condition)
Minimum output < 3.9 mA (low burnout condition)
Accuracy (mA output / 2000) or 5 µA, whichever is greater
Loop voltage effect 0.2 µA / V
Thermal drift ±2 µA / °C
Maximum output load [(Vsupply 10)/21] kOhms (example: 700 Ω @ 24 V)

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