Description
GEX float switch in an explosion-proof version with ATEX (Ex) approval, it is intended for use with Ex pumps in water and sewage media, including those with an admixture of diesel oil, hydrocarbons, engine oil, machine oil, cooking oil and others. The body of the device is injected with non-hygroscopic closed-cell polyurethane, which completely surrounds the control switch and eliminates air flow into the interior.
Composition of the GEX float switch
| Element | Description |
|---|---|
| Housing | Polyethylene, designed to work in an environment with hydrocarbons |
| Internal weight | Sets the center of rotation (center of gravity) in the immediate vicinity of the cable connection |
| Contact commutator | Electrical switch control (max. 21.4 mA / 13 V) |
| Cable | Special blue cable for use in hydrocarbon environments |
| Filling | Injection molded closed-cell polyurethane, non-hygroscopic |
Attention (safety): the regulator must be connected to an intrinsically safe power supply circuit. Recommended use security module EMS-Ex with ATEX certificate, dedicated to explosion-proof floats. In order to avoid the accumulation of electrostatic charges on the housing, the device should be used to control the level of liquids in tanks, tanks, shafts, etc., while ensuring a low liquid flow rate.
Ex approval/classification (ATEX)
| Parameter | Value |
|---|---|
| Group and category | II 1G |
| Intrinsically safe version | Ex ia |
| Explosiveness subgroup | IIC |
| Temperature class | T6 |
| Ambient temperature range | −20 °C to +40 °C |
| Degree of protection | IP68 |
Electrical connection: connections may only be made by qualified personnel authorized to install in potentially explosive atmospheres. The requirements of the standards EN 60079-14 and EN 60079-17 and the provisions of EN 60079-0 and EN 60079-11 must be observed.
| Electrical parameter | Value |
|---|---|
| Designation | Ex II 1G Ex ia IIC T6 |
| Input voltage (Ui) | ≤ May 13 |
| Input current (Ii) | ≤ 21.4 mA |
| Own capacity (Ci) | approx. 0 |
| Self-inductance (Li) | approx. 0 |
Accessories (on request): protective barrier / security module EMS-Ex for mounting on a DIN rail with two independent channels. Each channel allows you to control the load of the safe zone using LITTLE EX or a proximity sensor located in an explosive zone.
