WIKA 700.02 - Manual (Page 10)

10
2103869.04 12/2012 GB/D/F/E
GB
WIKA operating instructions differential pressure gauge with piston
7. Commissioning, operation
Hexagon bolt
M8 x 50 (M8 x 100)
without reed contact
with reed contact
Slotted screw M4 x 10
Reed case
Drag pointer
Plug
1581007.02
Electrical connection (for instruments with electrical accessories)
Electrical connection of the pressure gauge is by means of terminal box and
cable. Precise wiring schemes can be seen in the following connection diagram.
In addition both the pin assignment and the required power supply are stated on
the product label of the reed case.
Electrical connection diagram
Reed contact model 851.3 and 851.3.3
(change-over contact)
The instruments do not
provide for incorporated
overcurrent protectors. If
overcurrent protectors are
requested, these have to
be provided for externally.
Terminal box
2nd contact
1nd contact
851. 3
851.3. 3
If the line to the gauge is not rigid enough for a vibration-free installation, the gauge
should be mounted by means of appropriate fastening elements for wall mounting,
or, if necessary, with a capillary.
Wall mounting (see drawing)
Installation / fastening by means of mounting brackets