Vaisala HMP228 Manuel d'utilisateur télécharger pdf (Page 11)

HMP228

M210282en-A Operating Manual

>10.5mm

fitting body

hex = 24mm

tapered thread

R1/2 ISO 7/1

ø19mm drilling

sealing with:

1. LOCTITE® No 542 + activ. No 7649 (t=-55...+150 °C)

2. MEGA-PIPE EXTRA No 7188 (t=-55...+170 °C)

3. PTFE tape (t=-60...+210 °C) NOTE: the tape does not lock

the parts together. Therefore, use two fork spanners (hex 24 and

27 mm) for tightening and opening the clasp nut of the probe

parallel thread

G1/2 ISO 228/1

(BS 2779, JIS B0202)

>40mm

Process or pipe wall

Figure 2.2.3 Sealing and thread cutting for the fitting body

The fitting body can be installed e.g. on standard pipe fittings (G 1/2 ISO

228/1) or on a thread in the process wall. If the wall thickness is less than

10.5 mm, it is recommended to use a welded sleeve (see Figure 2.2.4). Note

that the minimum recommended distance of the fitting body and the probe

head is 40 mm (see Figure 2.2.3).

Adjust the probe to a suitable distance according to the type of installation and

tighten the clasp nut first manually; mark the fitting body and the clasp nut

and tighten the clasp nut a further 50 - 60 ° with a fork spanner (see Figure

2.2.4).

Pushing the probe head through the ball valve assembly. Open and close the

ball valve assembly with the marking groove always in sight. When the probe

has been pressed through, the nut is tightened 50 - 60 ° with a fork spanner

(hexacon 27 mm).

60°

probe

fitting body

clasp nut

max.

a pen

Figure 2.2.4 Tightening the clasp nut

NOTE

Be careful not to tighten the clasp nut more than 60°

as this may result in difficulties when trying to pull

the probe head up.

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Vaisala HMP228 Manuel d'utilisateur Page 11

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