WIKA 532.54 - Manual (Page 11)

GB
11
11554810.02 11/2013 GB/D/F/E
WIKA operating instructions pressure gauge model 5 per ATEX
6. Commissioning, operation
Permissible ambient and operating temperatures
When mounting the pressure gauge it must be ensured that, taking into
consideration the influence of convection and heat radiation, no deviation above
or below the permissible ambient and medium temperatures can occur. The
influence of temperature on the indication accuracy must be observed.
Permissible vibration load at the installation site
■ 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: Frequency range < 150 Hz
(models 532.5x or 532.3x) Acceleration < 0.7 g (7 m/s 2 )
Liquid-filled gauges: Frequency range < 150 Hz
(models 533.5x or 533.3x) Acceleration < 4 g (40 m/s 2 )
The liquid filling must be checked on a regular basis.
The liquid level must not drop below 75 % of the gauge diameter.
Commissioning
During the commissioning process pressure surges must be avoided at all costs.
Open the shut-off valves slowly.
Installation
Nominal position per EN 837-3 / 9.6.6 figure 7: 90° ( ⊥ )
Process connection lower mount (LM)
In order to ensure that with models 53x.31 ... 53x.34 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 vent valve at the top of the case must be opened before
commissioning!