Instructions

HD32.2 - 29 - V1.4
HP3201.2, HP3201
Wet bulb probe with natural ventilation
Sensor type: Pt100
(*)
Accuracy: Class A
Measurement range: 4 °C ÷ 80 °C
Connection: 4 wires plus SICRAM module
Connector: 8-pole female DIN45326
Cable: Only HP3201 (2m)
Stem dimension: Ø=14 mm L= 170 mm (HP3201.2), L= 110 mm (HP3201)
Cotton wick length: about 10 cm
Tank capacity: 15 cc
Tank autonomy: 96 hours con RH=50%, t = 23°C
(**)
Response time T
95
15 minutes
HP3201.2, HP3201 wet bulb probe with natural ventilation
For the start up go on as indicated below:
- Remove the cover, the cover isn’t screwed.
- Insert the cotton wick into the temperature probe, the cotton wick was previously dipped with
distilled water.
- Fill the case up till ¾ with distilled water.
- Close the case cover.
- Warning: don't turn the probe in the vertical direction because the distilled water can exit.
- The cotton wick must project from the temperature probe for about 20mm.
- During the time, the cotton wick is going to calcify (to become hard) and so it’s necessary to re-
place periodically it.
(*) The probe is calibrated, the calibration data are kept into the SICRAM module memory.
(**) T
95
response time is the time spent to reach the 95% of the final value. The measurement of the response time is
done with a negligible air speed (motionless air).