WIKA 432.55 - Manual (Page 10)

GB
10 WIKA operating instructions pressure gauge, model 432.55
14055446.01 12/2012 GB/D/F/E
Installation
„ Do not damage the diaphragm; scratches on the diaphragm (e.g.
from sharp-edged objects) are the main causes of corrosion.
„
For sealing, choose appropriate seals.
„
For flange mounting, only use sealings with a sufficiently large inner
diameter and centre them; contact with the diaphragm leads to
measuring errors.
„ When using soft or PTFE sealings, observe the instructions of the
sealing manufacturer, particularly with regard to tightening torque
and load cycles.
„
For installation, in accordance with the fitting and flange standards
the appropriate fastenings, such as screws and nuts, must be used.
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.
„
In order to avoid any additional heating, the instruments must not be
exposed to direct solar irradiation while in operation!
Permissible vibration load at the installation site
„
The instruments should always be installed in locations free from
vibration.
Commissioning
During the commissioning process pressure surges must be avoided
at all costs.
6. Commissioning, operation