Hot Surfaces; Static Electricity - WIKA 632.50 Serie Betriebsanleitung

2. Safety
These ignition sources must be taken into account for the instrument:

1. Hot surfaces

The surface of the instrument can heat up due to the temperature of
EN
the process medium. This depends on the installation situation and
must be taken into account by the operator.
2. Mechanically generated sparks
Mechanically generated sparks are a potential ignition source. If the
materials used exceed a total mass percentage of 7.5 % magnesium,
titanium and zirconium, the operator must take appropriate protective
measures.

3. Static electricity

- To avoid electrostatic charging, the instrument must be included in
the equipotential bonding of the system. This can be done via the
process connection or other suitable measures.
- The instrument can optionally contain components with a non-con-
ductive surface coating or lining. In such cases, the operator must
take appropriate measures to prevent electrostatic charging.
- Metal components of the instruments (e.g. TAG plates) must be
included in the equipotential bonding of the system during installa-
tion and operation.
4. Adiabatic compression and shock waves
With gaseous media, 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.
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Operating instructions capsule pressure gauge, model 63x.50 per ATEX