WIKA 732.15.160 - Manual (Page 10)

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11265191.07 12/2012 GB/D/F/I
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8. Transmitter for level measurement
WIKA operating instructions differential pressure gauge models 712.15.160, 732.15.160
GB
Electrical zero point (without option BCD switch)
If the mechanical zero point is changed by means of the
adjustable pointer, the electrical zero point must be reset to
the mechanical zero point.
First depressurise the pressure gauge.
Loosen the complete cable hood on the right-hand side of
the pressure gauge by completely unscrewing the screw 
on the top of the cable hood cover  using an appropriate
screwdriver (0.6 x 3.5 mm).
Extract the screw. Remove the cable hood  with the
socket insert  from the cable socket base  and thus
separate the pressure gauge from the power supply.
Remove the cable hood cover  from the cable hood 
and push the socket insert  out downwards through the
entire cable hood  .
Use a short stranded wire with bare points at both ends
(max. permissible resistance 30 Ω) to bridge contacts 5 and
6 on the socket insert.
Reassemble the plug in reverse order. Place the plug, with
the attached piece of stranded wire, onto the pin insert  ,
and thus reestablish the power supply.
Within a max. 30 seconds the new zero point will be stored
within the electronics. During this period, the current in the
loop will increase to 9.5 mA.
The new zero point also remains stored in the case of a
power failure.
Loosen the plug again in the same sequence as descri-
bed above and remove the piece of stranded wire. After
reassembling the plug, the electrical output signal will once
more correspond to the indication of the mechanical pointer.
Ensure the seals  are properly and
securely reinstalled to maintain the
protection class.
 Screw
 Cable hood cover
 Cable hood
 Socket insert
 Cable socket base
 Seals