Campbell Scientific Solar1000 Station - Manual (Page 31)

HMP60 Temperature and Relative Humidity Probe
3.2.1 Temperature Sensor
Sensor: 1000 Ω PRT, DIN 43760B
Temperature Measurement Range: -40° to +60°C
Temperature Accuracy: ±0.6°C (-40° to +60°C)
3.2.2. Relative Humidity Sensor
Sensor: INTERCAP ®
Relative Humidity Measurement Range: 0 to 100% non-condensing
Accuracy at 0° to +40°C:
± 3% RH (0 to 90% Relative Humidity)
± 5% RH (90 to 100% Relative Humidity)
Accuracy at -40° to 0°C and +40° to +60°C:
± 5% RH (0 to 90% Relative Humidity)
± 7% RH (90 to 100% Relative Humidity)
3.3. Installation
2.3.1 Siting
Sensors should be located over an open level area at least 9 m (EPA) in
diameter. The surface should be covered by short grass, or where grass does
not grow, the natural earth surface. Sensors should be located at a distance of
at least four times the height of any nearby obstruction, and at least 30 m
(EPA) from large paved areas. Sensors should be protected from thermal
radiation, and adequately ventilated.
Standard measurement heights:
1.5 m +/- 1.0 m (AASC)
1.25 – 2.0 m (WMO)
2.0 m (EPA)
See original HMP60 manual for a list of references that discuss temperature and
relative humidity sensors.
3.3.2 Mounting and Assembly
Pull off the yellow shipping cap (see Figure 3.1).
The HMP60 must be housed inside a solar radiation shield when used in the
field. The 41303-5A 6-Plate Radiation Shield (Figures 3.2 and 3.3) mounts to a
tripod mast, UT10 tower leg, or CM202, CM204, or CM206 crossarm. The
HMP60 is held within the 41303-5A by a mounting clamp (Figure 3.3).
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