Campbell HMP45C Guida Utente Scaricare il pdf (Pagina 11)

User Guide

Do not overtighten the nut that holds in the probe as the probe could

be damaged.

Figure 1. HMP45C and 41003-5 Radiation Shield on a Tripod Mast

3.1 Specific instructions for the URS1 Radiation Shield

A typical radiation shield for the HMP45C is shown in Figure 1. This shield, as

sold by Campbell Scientific, is supplied with an adapter that enables the

HMP45C to be fitted and detached as follows:

1. Loosen the large retaining nut at the bottom of the shield until it turns freely.

2. Gently insert the HMP45C through the centre of the nut.

3. During insertion, observe the probe by looking through the radiation shield

between the lowest curved plate and the flat white disc at the bottom of the

housing – see Figure 2. The tip of the probe will pass through a hole in a

white rubber sealing membrane that is mounted on the upper surface of the

flat white disc.

4. Continue to carefully insert the probe until the larger section of the probe

body (the ‘handle’) emerges through the sealing membrane – see Figure 2

(a).

CAUTION

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Campbell HMP45C Guida Utente Pagina 11