WIKA 7 Mode D'emploi page 7

3. Technical data and intended use
Movement:
Dial and pointer:
Case, bezel ring:
Window:
Installation
Nominal position per EN 837-3 / 9.6.6 Figure 7: 90° ( ⊥ )
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Process connection: lower mount (LM)
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In order to ensure that, with Model 73x.31 pressure can be safely and
„
reliably vented through the case back, a distance of at least 25 mm must be
left free behind the case!
In order to avoid any additional heating, the instruments must not be
„
exposed to direct solar irradiation while in operation!
With filled versions the ventilating valve at the top of the case must be
„
opened prior to commissioning!
Permissible vibration load at the mounting point
The instruments should always be installed in locations free from vibration.
„
If necessary, it is possible to isolate the instrument from the mounting point
„
by installing a flexible connection line between the measuring point and the
pressure gauge and mounting the instrument on a suitable bracket.
If this is not possible, the following limit values must not be exceeded:
„
Dry gauges:
(Model 732)
Liquid-filled gauges: Frequency range < 150 Hz
(Model 733)
The liquid filling must be checked on a regular basis.
The liquid level must not drop below 75 % of the gauge diameter.
WIKA Operating instructions pressure gauges Model 7 per ATEX
Stainless steel
Aluminium
Stainless steel
(Model 73x.31: with blow-out back)
Laminated safety glass
Frequency range < 150 Hz
Acceleration < 0.7 g (7 m/s
Acceleration < 4 g (40 m/s
2 )
2 )
GB
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