Vaisala HUMICAP HMT330 SERIES Guide de l'utilisateur télécharger pdf (Page 50)

User's Guide ______________________________________________________________________

48 __________________________________________________________________ M210566EN-J

Tightening the Clasp Nut

1. Adjust the probe to a suitable depth according to the type of

installation.

2. Tighten the clasp nut first manually.

3. Mark the fitting screw and the clasp nut.

4. Tighten the nut a further 50 -60º (ca. 1/6 turn) with a wrench. If

you have suitable torque wrench, tighten the nut to max 45 ± 5 Nm

(33 ± 4 ft-lbs).

0505-276

Figure 30 Tightening the Clasp Nut

The following numbers refer to Figure 30 above:

1 = Probe

2 = Clasp nut

3 = Fitting screw

4 = Pen

CAUTION

Take care not to damage the probe body. A damaged body makes the

probe less tight and may prevent it from going through the clasp nut.

CAUTION

In pressurized processes it is essential to tighten the supporting nuts and

screws very carefully to prevent loosening of the probe by the action of

pressure.

NOTE

Take care not to over tighten the clasp nut to avoid difficulties when

opening it.

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Vaisala HUMICAP HMT330 SERIES Guide de l'utilisateur Page 50