GMS GDS-27, Инструкция по эксплуатации

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GMS GDS–27
6. e
lectrical connection
Sensor with NPN or PNP output is allowed to lead only by resistive or inductive lead. Positive sup-
ply voltage (+U) is connected to the brown conductor BN (1), negative (0 V) to the blue conductor
BU (3) and the leads (only NPN or PNP type of output) to the black conductor BK (4). The capacity
loads and low resistance loads (bulb) is evaluated by the sensor as short circuit.
For “B” variants with the fixed cable, the individual colour cores of the connecting cable are con -
nected to the respective terminals of the related equipment (supply unit) see Fig. 13 to 15.
For “C” variant with the connector, the cable can be supplied with the sensor (length 2 or 5 m), fitted
with the pressed connector socket or dismountable connector socket without the cable (see acces-
sories). In this case the cable is connected to the inside pins of the socket according to Fig. 16.
GDS –27_ –30
Is designed for universal use in vertical position for limit level detection of liquids (conductive and
non-conductive) and bulk-solid and powder materials. It is not recommended to install the sensor
into closed vessels where intensive condensation occurs. Electrically conductive liquids are sensed
just by touch of the end of electrode. To react to non-conductive liquid or solid material it is neces -
sary 5 ÷ 20% dip into a medium dependently on the permittivity of sensed medium and set sensi-
tivity. Sensor is mounted directly into a tank, vessel, container or basin in slant or vertical position
by means of welding flange or stainless steel fixing nut. In case of level sensing of low-permittivity
media in non-conductive containers it is recommended to mount the sensor on auxiliary metal-plate
electrode with min. 500 cm
2
area.
GDS –27_ –31
Is designed for limit level detection of conductive liquids (water and solutions of chemicals). It is
possible to install the sensor into closed vessels, tanks, basins, etc. The sensor reacts to liquid level
after 2 ÷ 20% dip into a liquid dependently on the permittivity of sensed medium and set sensitivity.
Sensor is mounted directly into a vessel, tank or open basins in vertical position by means of weld-
ing flange or fixing nut. When installed into an open basin it is necessary to ground the housing of
sensor or to connect it with sensed liquid. For this purpose it is possible to use any metallic ever
immersed object (pipe, etc.).
GDS –27_ –40
Is specified for versatile use for limit level detection of liquids (conductive and non-conductive) and
bulk-solid and powder materials in depths down to 6 m. It is not recommended to install the sensor
into closed vessels where intensive condensation occurs. Electrically conductive liquids are sensed
just by touch of the end of electrode. To react to non-conductive liquid or solid material it is neces -
sary 5 ÷ 20% immersion into a material. Sensor is mounted directly into a vessel, tank or open ba-
sins in vertical position by means of welding flange or fixing nut. When installed into an open basin
it is necessary to ground the housing of sensor or to connect it with sensed liquid. For this purpose