conductive level switch / for liquids / threaded

Konductive electrodes type EF2...5 are
approved by the ?DIBt? (German Institute
for Structural Engineering) as liquid
level limit switches for the overfill protection
of containers for storing waterendangering
liquids.
The screw connection of the EF2...5 consists
of the materials PE, PPH, PVC or
PTFE, depending on requirements. The
electrode rods are made of stainless
steel, 1.4571, Hastelloy B, Hastelloy C,
tantalum or Monell. Through this the
conductive electrodes EF2...5 are suitable
for use with highly aggressive media.
The electrode relays ER-107?, ER-217...
or ER-145... (intrinsically safe control circuit)
certified as overfill and leakage evaluation
(Z-65.13-100 und Z-65.13-405)
supply a measuring voltage which allow
an operating current to flow via the resistance
built in the conductive electrode
through the signal line. If the conductive
medium rises to the height of the
electrode tip of the level sensor, a circuit
is closed. This causes a change-over of
the voltage-free output contacts on the
electrode relay.