WIKA 233.50 - Manual (Page 3)

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 instal-
ling 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
(Model 232) Acceleration < 0.7 g (7 m/s 2 )
Liquid-filled gauges: Frequency range < 150 Hz
(Model 233) 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.
4. Commissioning
During the commissioning process pressure surges must be avoided at all costs. Open the
shut-off valves slowly.
5. Maintenance and cleaning
„ The instruments are maintenance-free.
„ The indicator and switching function should be checked once or twice every year. The
gauge must be disconnected from the process to check with a pressure testing device.
„ Clean the pressure gauge with a moist cloth.
„ Repairs must only be carried out by the manufacturer or appropriately qualified skilled
personnel.
„ When dismounting, close the compensating valve (if available).
WARNING!
Residual media in dismounted pressure gauges can result in a risk to persons,
the environment and equipment.
Take sufficient precautionary measures.
Appendix 1: Declaration of conformity