GDS–27 GMS
4
2. f
eatUreS
of
variantS
GDS –27_ –10
Uncoated short bar electrode
for sensing non-adhesive bulk-solid (powder)
materials (sand, sugar) and electrically non-conductive liquids (oils, diesel,
petrol), horizontal mounting. Electrode length 50 mm or 100 mm.
GDS –27_–11
Fully coated short bar electrode
(PTFE – Polytetrafluoroethylene) for
sensing electrically conductive liquids (water). Assembly into a side wall of
vessel or into a pipe. Electrode length 30 mm.
GDS –27_–20
Semi-coated rod electrode
(FEP – Tetrafluoroethylene-Perfluoro-Propylene)
for sensing light-bulk solid or powder materials (plastic granulates, flour,
cement) and non-conductive liquids (plant oils), horizontal, slant or vertical
mounting. Electrode length from 0.1 m to 1 m.
GDS–27_–21
Fully coated rod electrode
(FEP)
for sensing electrically conductive liquids (water solutions, water), adhesive
and aggressive materials, horizontal or vertical mounting.
Electrode length from 0.1 m to 1 m.
GDS–27_–22
Fully coated rod
electrode
(PFA – Perfluoroalkoxy) for sensing electrically
conductive liquids (water solutions, water), adhesive and aggressive
materials, horizontal or vertical mounting. Electrode length from 0.1 m to 1 m.
GDS –27_ –30
Dismountable rod uncoated electrode
for sensing bulk-solid (powder)
materials and conductive or non-conductive liquids. Mounting from the top
(vertically) or slant from the side. Electrode length from 0.1 m to 3 m.
GDS –27_–31
Fully coated rod electrode
for sensing aggressive electrically conductive
liquids (water, solutions of chemicals), vertical mounting.
Electrode length from 0.1 m to 2 m.
GDS –27_ –40
Uncoated stainless steel rope electrode
and weight for general purpose in
deeper silos (bulk-solid and powder materials sensing – sand, gravel,
cement) or hoppers (liquids sensing), vertical mounting.
Electrode length from 1 m to 6 m.
1. b
rief
Capacitive level sensors (switches) GDS
®
are designed for limit level sensing of liquids, bulky solid
and powder materials in vessels, containers, silos, tanks, reservoirs, etc. Sensors are made in
several modifications of sensing electrodes – short and long rods or rope. The electrodes can be
coated what has important sense in case of adhesive, aggressive or electrically conductive media
sensing. The process coupling at the housing can be with thread M27x2, M30x1.5, G3/4” or with
Tri-clamp coupling. Electric connection is provided by means of permanent cable lead (variant B)
or by means of connector (variant C). Output performances – transistor outputs with open collector
(NPN, PNP) output.
There are next performances available:
N
– For normal atmospheres;. There are high temperature
performance
NT
available.
