Wika 632.51+8xx Uživatelský manuál stáhnout pdf (Strana 6)

WIKA Operating instructions pressure gauges Model 632.51 with 831 per ATEX

1) The permissible uppper ambient temperature for the electrical components is determined by

the electrical connection values and the ignition temperature of the ambient gases, vapours and

dusts. Therefore the maximum permissible ambient temperatures specified in the EC-type exami-

nation certificates for slot-type sensors and SN sensors must be observed as well. The lower of

these two values is to be considered the maximum permissible ambient temperature!

Materials (wetted parts)

Pressure connection with pressure chamber: Stainless steel

Pressure element (capsule element): Stainless steel

Sealing ring between socket and capsule element: PTFE

11059738 11/2008 GB/D/F

Operating Temperature

Ambient: -20 … +60 °C

Attention: Footnote 1) under table 1 must be absolutely taken into account!

Medium: see table 1

Attention! With gaseous substances the temperature may increase as a result

of the compression temperature. In such cases the pressure change rate has to

be slowed down resp. the permissible medium temperature has to be reduced.

Table 1: Permissible medium temperature (only mechanical part)

3. Technical data and intended use

Ignition temperature of Permissible maximum medium temperature

the ambient atmosphere (in the pressure system)

(temperature class)

> 85 °C (T 6) +70 °C

> 100 °C (T 5) +80 °C

> 135 °C (T 4) +80 °C

> 200 °C (T 3) +80 °C

> 300 °C (T 2) +80 °C

> 450 °C (T 1) +80 °C

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Wika 632.51+8xx Uživatelský manuál Strana 6