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Version with limit contacts
2. Slightly tighten the clamping screw.
3. Check the switching point and readjust,
if necessary.
Adjustment without pressure specifications
(e.g. on site)
1. Connect the device to an isolating switch
amplifier as described in section 7.1.
2. Adjust the tag by carefully moving the
pointer manually.
Î Do not move the pointer beyond the cur-
rently indicated position on the dial.
The described procedure is only possible
when the tank is full with 100 % reading. It
cannot be performed when the tank is empty
and the dial reads 0 %.
7.3 Retrofitting or replacing the
contact unit
The contacts can only be retrofitted or re-
placed as a complete unit.
RoHS-compliant retrofit contact units
Contact unit
One min. contact
Two min. contacts
One min. contact
One max. contact
1. Unscrew the cover.
2. Unscrew cover plate (2, Fig. 7).
3. Unscrew both dial screws (5, Fig. 7). Pull
the dial forwards toward the pointer and
lift it upwards.
4. Push the contact unit (2) onto the unit
frame plate (3) from the right so that the
24
Order no.
A1
1402-1773
A1/A2
1402-1774
A1
1402-1775
A2
metal tags reach into the proximity
switches without touching the contacts.
5. Fasten the contact unit (2) to the measur-
ing unit frame using two slotted head
screws (5).
6. Establish the connecting cable (4.1) for
the alarm contact A1 below the measur-
ing unit frame and the connecting cable
(4.2) for the alarm contact A2 above the
measuring unit frame.
Ensure that the cables do not prevent the
tags from moving into and out of the
proximity switches. Moreover, make sure
that the cables are not damaged when
tightening the case cover.
7. Insert the printed circuit board (1) into
the positioning notch from the left and
tighten it using a Phillips screw (6).
8. Replace the blanking plug of the indicat-
ing unit with an M12x1.5 cable gland
(8).
Protect the cable gland against water en-
tering it until the signal line has been in-
stalled.
9. Connect the wiring as shown in sec-
tion 7.1.
10. Slide back the dial from the top and fas-
ten it to the measuring unit frame using
the dial screws (2, Fig. 7). Check zero
position according to section 6.1.
11. Place on the cover and fasten it.
Î Make sure the connecting cables of the
proximity switches are not damaged.
EB 9520 EN
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