Wika 700.02 Manual do Utilizador descarregar pdf (Página 6)

11025859.03 10/2013 GB/D/F/E

WIKA operating instructions dierential pressure gauge with piston per ATEX

2. Safety

Skilled personnel

Skilled personnel are understood to be personnel who, based on their technical

training, knowledge of measurement and control technology and on their

experience and knowledge of country-specic regulations, current standards

and directives, are capable of carrying out the work described and independently

recognising potential hazards.

Temperature class of the

ambient explosive atmosphere

(ignition temperature)

Maximum permissible medium

temperature (in the measuring

system)

T 6 (> 85 °C) +70 °C

T 5 (> 100 °C) +85 °C

all other temperature classes +100 °C

2.3 Safety instructions for dierential pressure gauges per ATEX

WARNING!

Non-observance of these instructions and their contents may

result in the loss of explosion protection.

WARNING!

It is imperative that the application conditions and safety

requirements of the EC declaration of conformity are followed.

Dierential pressure gauges must be grounded via the process

connection!

Specications

Permissible temperatures

Ambient: 0 … +60 °C

Medium: The permissible medium temperature does not only depend on

the instrument design, but also on the ignition temperature of the

surrounding gases, vapours or dust. Both aspects have to be taken into

account. For permissible maximum medium temperatures see table 1.

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

of compression warming. In these cases it may be necessary to throttle the rate

of change of pressure or reduce the permissible medium temperature.

Table 1: Permissible medium temperature

1 2 3 4 5 6 7 8 9 10 11 ... 51 52

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