WIKA Hydra-Sensor - Handbuch (Seite 6)

9016325 06/2007
6 WIKA Operating Instructions HYDRA-Sensor
Pressure Transmitter
HYDRA-Sensor
5. Wiring details
Electrical installation should only be undertaken by a qualified
electrician. The electrical specification, connection details and
switch functions are shown on the instrument identification label.
The correct wiring diagram is shown on the instrument label and in
the operating instructions for the transmitter.
6. Maintenance instructions
HYDRA-Sensor pressure measuring systems do not require
any maintenance. A cleaning of the HYDRA-Sensor may only be
accomplished through rinsing. Any mechanical cleaning inside the
process connection may damage the separating diaphragms.
The HYDRA double diaphragm system prevents contamination
of the process media even in case of mechanical damage of the
wetted diaphragm. In this case the process media will penetrate
the lateral leakage boring. The instrument must be exchanged as
soon as possible.
For safety reasons repairs of already mounted instruments are not
possible.
GB