Wika TGT73 Uživatelský manuál stáhnout pdf (Strana 13)

14028755.02 08/2012 GB/D/F/E

WIKA operating instructions model TGT73 13

6. Commissioning, operation

When screwing the instruments in, the force required to do this must

not be applied through the casing, but only through the spanner ats

provided for this purpose, and using a suitable tool.

Installation with

open-ended spanner

■

If possible, the entire length of the stem should be exposed to the

temperature being measured. However, at least the length of the

active part that corresponds to the length of the gas expansion

vessel (active length).

■

In pipelines or other measuring points, the temperature probe must

be angled as far towards the ow as possible.

■

Errors in thermal conduction occur if the area where the

temperature is to be measured is so small, that the mass of the

temperature probe acts as thermal capacity. Errors in thermal

conduction may also occur if the immersion depth is insucient, if

the mounting ttings are connected to a good thermal conductor

(metal plate or similar) and there is a considerable dierence

in temperature between the measuring and mounting element

temperatures.

■

The dial casing must be mounted free from vibration. If necessary,

it is possible to isolate the instrument from the mounting point by

installing a exible connection line between the measuring point

and the thermometer and mounting the instrument on a suitable

bracket.

6. Commissioning, operation

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Wika TGT73 Uživatelský manuál Strana 13