Special Conditions For Safe Use (X Conditions); Specifications - WIKA 4 Operating Instructions Manual

2. Safety / 3. Specifications
Additional label for instruments with PTFE lining
For instruments with PTFE lining, measures must be taken in the lining area, if necessary, in
EN
order to exclude electrostatic charging.

2.7 Special conditions for safe use (X conditions)

1. All accessories (e.g. valves or attachment components) must be assessed in combina-
tion with the delivered instruments by the end user.
2. The operator must recognise ignition hazards and take suitable protective measures.
See chapter 2.2 "Responsibility of the operator".
3. The legibility of the marking must be observed during time in use but at least during
inspection periods of three years. See chapter 2.2 "Responsibility of the operator".
4. For instruments with marking pointer, ensure that there are no electrostatic charging
mechanisms at the marking pointer.
5. Avoid any kind of external impact. External impacts can generate sparks through friction
processes between different materials.
6. The filling/refilling of instruments by non-authorised personnel leads to a loss of the
explosion protection and can lead to damage to the instrument.

3. Specifications

Pressure limitation
Models 432.50, 433.50, 432.30, 433.30, 452.50, 453.50, 452.30, 453.30:
Steady:
Fluctuating:
Short time:
Models 432.56, 433.56, 432.36, 433.36, 452.56, 453.56, 452.36, 453.36:
Steady:
Fluctuating:
Short time:
Temperature effect
When the temperature of the measuring system deviates from the reference
temperature (+20 °C):
max. ±0.8 %/10 K of full scale value
10
Full scale value
0.9 x full scale value
5 x full scale value, however max. 40 bar
Full scale value
0.9 x full scale value
40, 100 or 400 bar
WIKA operating instructions pressure gauge, model 4 per ATEX