1 temperature sensor, Temperature sensor – Campbell Scientific HMP155A Temperature and Relative Humidity Probe User Manual
Page 18
HMP155ATemperature and Relative Humidity Probe
*HMP155ACBL1 Cable provided by Campbell Scientific
6 = no connection
7 = V
CC
(red)
8 = GND (black)
- = SHIELD (clear)
*Note: HMP155ACBL2 for RS-485 is described in Appendix C.
Filter:
Sintered PTFE
Housing material:
PC
Housing classification:
IP66
Weight:
86 g (3 oz)
Inputs and Outputs
Voltage outputs:
0 to 1 V
Average current consumption: <3 mA (analog output mode)
Operating voltage:
7 to 28 Vdc
Settling time at power-up:
2 s
6.1 Temperature Sensor
Measurement range:
–80° to +60°C –112° to +140ºF)
Accuracy with voltage output
at –80° to +20°C:
±(0.226 – 0.0028 x temperature) °C
at +20° to +60°C:
±(0.055 + 0.0057 x temperature) °C
See graph below
0804-032
Temperature sensor:
Pt 100 RTD 1/3 Class B IEC 751
Response time (63 %) for additional
temperature probe in 3 m/s air flow: 63% <20 s
90% <35 s
10
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