Campbell Scientific HC2S3 Temperature and Relative Humidity Probe - Manual (Page 15)

Model HC2S3 Temperature and Relative Humidity Probe
Power Consumption: <4.3 mA @ 5 V
<2.0 mA @ 12 V
Supply Voltage (using CSI cable): 5 to 24 Vdc (12 Vdc recommended)
Start-up time: 1.5 s typical (Rotronic specification,
Campbell Scientific recommends 2 s at
60°C, 3 s at 0°C, 4 s at -40°C)
Maximum Startup Current: <50 mA during 2 µs
Maximum Lead Length: 300 m (1000 ft) with 12 V power, 3 m
(10 ft) with 5 V power
Analog outputs
Offset at 0 V: ±3 mV (maximum)
Deviation from Digital Signal: < ±1 mV (0.1°C, 0.1% RH)
6.1 Temperature Sensor
Sensor: PT100 RTD, IEC 751 1/3 Class B, with
calibrated signal conditioning
Temperature Measurement Range: -50 ° to +100°C (default -40° to + 60°C)
Temperature Output Signal Range: 0 to 1.0 V
Accuracy at 23°C: ±0.1°C with standard configuration
settings
Long Term Stability: <0.1°C/year
Sensor Time Constant (63% step
change (1 m/s air flow at sensor)):
≤22 s with PE filter, ≤30 s with Teflon
filter
Temperature Accuracy over Temperature:
9