Vega EL 31 - Shortening of the Electrode; Filling Opening; Humidity from Outside

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18 Capacitive electrodes EL 4 … 20 mA - compact

Fig. 2.3 Humidity

Mounting

Fig. 2.2 Shortening of the electrode

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Shortening of the electrode

The dimensions of fully insulated electrodes are

fixed and must hence not be modified. Each

modification will destroy the instrument.

Partly insulated cable or rod electrodes can be

shortened afterwards.

The electrode basic capacitance is automa-

tically compensated during adjustment. It is

hence possible to shorten the electrodes

individually.

Cable electrode EL␣ 31 can also be shortened

afterwards (see fig. 2.2). Loosen the two pins

on the gravity weight (hexagon) and remove the

two pins. Pull the cable out of the gravity

weight.

To avoid splicing of the steel cable (EL␣ 31)

during cutting, you have to tin the cable around

the cutting position with a copper bit or strongly

tighten the cable with a wire. Shorten the

electrode cable with a metal cutting saw or a

cutting-off wheel by the the requested length.

Carry out the adjustment. The instruction is

under “4.1 Adjustment“.

Filling opening

Install the electrode such that it does not

protrude directly into a strong filling stream.

Should such an installation place be necessary,

mount a suitable sheet above or in front of the

electrode e.g. L␣ 80␣ x␣ 8 DIN 1028, etc.

Humidity from outside

To avoid humidity ingress, loop the connection

line to the electrode housing on vertically

installed electrodes directly behind the cable

entry to the bottom so that rain and

condensation water can drain off.

This is mainly valid for mounting outside, in

areas where humidity must be expected (e.g.

by cleaning processes) or on cooled or heated

vessels (see fig. 2.3).

Cable entries

When mounting outside, on cooled vessels or in

humid areas where cleaning is made e.g. with

steam or high pressure, the seal of the cable

entry is very important.

Use cable with a round cross-section area of

conductor and tighten the cable entry. The

cable entry is suitable for cable diameters of

5␣ mm to 9␣ mm.

Metal vessels

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Vega EL 31 - Shortening of the Electrode; Filling Opening; Humidity from Outside

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