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1.0 Wiring
Electrical connection is made by shielded cable with cappillary tube. The level probe should be earthed at
least on one side to ensure an adequate surge protection. In grounded level probe no potential differences in
ground potential may not (control panel, junction box, earthing switches, measuring container and medium)
exist. Precise wiring schemes can be seen in the drawings. In addition, wiring details and required power
supply are given on the rating plate.
2.0 Commissioning
The level probe is immediately ready for service after the electrical connections have been made. The output
signal must be in accordance with the nameplate
0 or 4 mA. There after, the level probe is lowered corresponding to the measurement range.
Significance of applied terminal designations:
Ub+ / Ub-
supply voltage
S+ / S-
output signal
shield / PE
cable shield/case, earth
2.1 Current output
output signal:
4 ... 20 mA / 2 wire-system
0 ... 20 mA / 3 wire-system
Power supply:
Ub = 12 ... 30 V DC
Admissible load:
Ra = (Ub - 12 V) / 20 mA
2.2 V Signal
Output signal:
0 ... 10 V / 3 wire-system
Power supply:
Ub = 17 ... 30 V DC
Ra ≥ 10 kΩ
Admissible load:
3.0 Service and Maintenance
The level probe described here under is maintenance free.
It includes no components which have to be repaired or replaced on the site.
Repairs have to be carried out at the factory.
Depending on working conditions, the level probe should be checked about once a year to ensure that it is
within their specifications and be adjusted if necessary.
Quality for the
future
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