EL/0/SB-1/G1/2/ED/ED/0/Ex-1G JOLA bar electrode

Description

The EL/0/SB-1/G1/2/ED/ED/0/Ex-1G JOLA bar electrode is used for automatic control of the fluid in a pump or solenoid valve. The electrodes monitor the level of the liquids, sending a signal to an electronic relay when they come into contact with the liquid. EL/0/SB-1/G1/2/ED/ED/0/Ex-1G can be used as level control, level indication, limit level detection, as spill protection or as overfill protection.

before use, we recommend you consult the datasheet under the Documentation tab.

Mode of operation

The electrodes are used for automatic control of pumps or solenoid valves and for overflow or drying protection in wells or tanks with conductive liquids. The liquid level is controlled by electrodes that give commands to switch to an electronic relay when they come into contact with the liquid. For a two-point control system, you need two control electrodes and one earth electrode. If you only want to signal the liquid level, the E1 control electrode and the earth electrode will be sufficient. Instead of a ground electrode, you can also use the conductive metal wall of the tank as a ground connection. However, in all cases we recommend using a separate earthing electrode.

Recommendations for the use of control electrodes

The conductive fluid to be monitored shall have a specific conductivity of min. 50 µS/cm. The specific conductivity of tap water is usually set in the range 100 µS/cm to 1,000 µS/cm.

We advise against the use of electrodes:

• in non-conductive liquids (e.g. mineral oils);
• in mushy or viscous liquids;
• in liquids that tend to foam (e.g. beer, soda, etc.)
• in liquids with high steam and condensate formation (e.g. at elevated temperatures);
• in liquids with a tendency to precipitate (e.g. calcareous milk, oily waste water, etc.);
• in liquids with solid particles (e.g. pieces of wood, debris, etc.).

Features EL/0/SB-1/G1/2/ED/ED/0/Ex-1G

• Ex II 2 G Ex ia IIC T6 Gb
• for use in intrinsically safe circuits in potentially explosive atmospheres Zone 1 or 2
• INERIS EC type-examination certificate 03ATEX0152
• Design: 1 control electrode and 1 earth electrode
• Sensitive element: 2 electrode rods of 316 Ti stainless steel, 4 mm diameter, covered with PVDF shrink tube max. 300 mm length
• length of the pole: max. 2,500 mm
• Threaded spigot: 316 Ti stainless steel, G1
• electrical connection: junction box made of antistatic glass-fibre reinforced polyester, A 301, 110 x 75 x 55 mm
• Protection class: IP65
• mounting: vertical
• temperature range: – 20 °C to + 60 °C
• pressure resistance: for non-pressure applications

More technical information can be found under the Documentation tab in the attached pdf.