Gestra LRG 16-9 Electrode

Data Sheet 818861-06 Issue Date: 09-2024
Conductivity Electrode
LRG 16-9
LRG 16-9
Description
Technical data
The conductivity electrode LRG 16-9 together with the conductivity switch LRS 1-.. or conductivity controller LRR 1-.. is
designed for measuring and monitoring electrical conductivity in conductive fluids.
If used as conductivity limiter or continuous blowdown controller in steam boilers, the conductivity electrode LRG 16-9
can be used with the following equipment:
Conductivity switch LRS 1-7, LRS 1-50, Conductivity controller LRR 1-50, LRR 1-52
Service pressure
PN 40, max. 32 bar at 238 °C
Function
LRG 16-9 with on-site socket end for installation in pipes.
The conductivity electrode LRG 16-9 is used in combination with the following equipment as conductivity limiter and
continuous blowdown controller in steam boilers:
Conductivity switch LRS 1-7, LRS 1-50, Conductivity controller LRR 1-50, LRR 1-52.
In addition the equipment can monitor conductivity in condensate and feedwater systems and in cooling and cleaning
water.
The conductivity electrode LRG 16-9 in conjunction with conductivity switch LRS 1-7 is also approved for feedwater
monitoring on board of seagoing vessels.
The conductivity electrode works in conjunction with conductivity switches or controllers and monitors the conductivity
in conductive fluids.
To measure the fluid temperature a resistance thermometer Pt 100 is integrated in the electrode.
A short circuit or wire breakage in the conductivity electrode will trigger an error message in the conductivity switch or
controller.
Application in potentially explosive atmospheres Do not use the equipment in potentially explosive atmospheres.
LRG 16-9 with measuring chamber for installation in pipes.
Mechanical connection Screwed G ½ A, ISO 228-1 (also available with NPT thread)
Cell constant 0.5 cm-1 Materials Screw-in body: 1.4571, X6CrNiMoTi17-12-2
Measuring electrode: 1.4571, X6CrNiMoTi17-12-2 Electrode rod insulation: PTFE
Electrical connection M 12 sensor connector, 5 poles, A coded Protection
IP 55 to EN 60529 Ambient temperature at terminal box Max. 80 °C Weight Approx. 0.3 kg
Important Notes Installation The conductivity electrode is designed for installation in
pipes. The conductivity electrode is installed in a socket end, a measuring chamber or a mounting flange. Measuring
chamber and mounting flange available as optional extra.
Electrical connection The conductivity electrode LRG 16-9 is equipped with M 12
sensor plug-in connectors with 5 poles, A coded. For connecting the electrode preconfigured control cable assemblies
(with male and female connectors) of various lengths are available as add-on equipment.
Note that the recommended control cable is not UVresistant and, if installed outdoors, must be protected
by a UV-resistant plastic tube or cable duct.
If you do not use the prefabricated control cable assembly, use screened five-core control cable, e. g. LiYCY 5 x 0.5 mm2, for
connecting the equipment. In addition, connect at the electrode end a screened female connector to the control cable.
Max. cable length between conductivity electrode and switch or controller: 30 m, with conductivities from 1 to 10 μS/cm:
max. 10 m.
Make sure that connecting cables leading to the equipment are segregated and run separately from power
cables.
LRG 16-9 with mounting flange for sandwiching between flanges.