Campbell Scientific HMP45C Temperature and RH Probe - Manual (Page 6)

Model HMP45C Temperature and Relative Humidity Probe
2. Specifications
Operating Temperature: -40 °C to +60°C
Storage Temperature: -40 °C to +80°C
Probe Length: 25.4 cm (10 in.)
Probe Body Diameter: 2.5 cm (1 in.)
Filter: 0.2 μm Teflon membrane
Filter Diameter: 1.9 cm (0.75 in.)
Power Consumption: <4 mA @ 12 V
Supply Voltage: 7 to 35 VDC
Settling Time: 0.15 seconds
2.1 Temperature Sensor
Sensor: 1000 Ω PRT, IEC 751 1/3 Class B
Temperature Measurement Range: -40 °C to +60°C
Temperature Output Signal range: 0.008 to 1.0 V
Temperature Accuracy:
0.4
0.2
0.0
-0.2
-0.4
-40 -20
Temperature ( C) o
Error
( C) o
0 20 40 60
2.2 Relative Humidity Sensor
Sensor: HUMICAP ® 180
Relative Humidity Measurement Range: 0 to 100% non-condensing
RH Output Signal Range: 0.008 to 1 VDC
Accuracy at 20 °C
±2% RH (0 to 90% Relative Humidity)
±3% RH (90 to 100% Relative Humidity)
Temperature Dependence of Relative Humidity Measurement:
±
0.05% RH/ °C
Typical Long Term Stability: Better than 1% RH per year
Response Time (at 20 °C, 90% response): 15 seconds with membrane filter
The black outer jacket of the cable is Santoprene ® rubber. This
compound was chosen for its resistance to temperature extremes,
moisture, and UV degradation. However, this jacket will
support combustion in air. It is rated as slow burning when
tested according to U.L. 94 H.B. and will pass FMVSS302.
Local fire codes may preclude its use inside buildings.
NOTE
2