WIKA Hydra-Sensor - Handbuch (Seite 4)

9016325 06/2007
4 WIKA Operating Instructions HYDRA-Sensor
Pressure Transmitter
HYDRA-Sensor
1. Safety instructions
Please observe the relevant national safety instructions
for mounting, installation and operation of these pressure
gauges (ex.: VDE 0100) as well as the advice in these operating
instructions. Failure to do this may result in serious injury or
damage.
Only qualified personnel should operate or maintain these
instruments.
2. Product description
The HYDRA-Sensor is an electronic pressure gauge (pressure
transmitter). The detailed specification is in the operating
instructions for the pressure transmitter.
This pressure transmitter has been adapted to the special
requirements of ultra-high purity applications by using a special
diaphragm seal system. All wetted parts are made of UHP-PFA
under clean-room conditions. Final assembly, adjustment and
packing is effected under Laminar-Flow Class 100. Filling Liquid is
KN75 a 50/50 mixture of DI-Water and Isopropyl Alcohol (IPA).
Pressure transmitter and diaphragm seal are one unit and must
not - under any circumstance - be separated as this may cause
the fill-fluid to leak thus destroying the sensor.
For more information see data sheet SP 99.21
3. Permissible ambient and working conditions
■ Permissible ambient temperature: +5 ... +60°C (+41 … +140°F)
■
Permissible process temperature: +5 ... +60°C (+41 … +140°F)
■ Permissible storage temperature: -20 ... +60°C (-4 … +140°F)
■ Maximum rated pressure and temperature of the process
connection according to following chart must not be exceeded.
The resulting maximum working pressure might be lower than
the instrument's measuring range.
GB