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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 humi

dit

y 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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Campbell-scientific Solar1000 Station Manual de usuario Pagina 31