Description
The GEX float switch with ATEX (Ex) approval is designed for use with Ex-rated pumps in water and wastewater, including liquids containing diesel fuel, hydrocarbons, engine oil, machine oil, cooking oil, and other oils. The device housing is injection-filled with non-hygroscopic, closed-cell polyurethane, which completely surrounds the control switch and prevents air from entering the interior.
GEX float switch components
| Component | Description |
|---|---|
| Housing | Polyethylene, suitable for use in hydrocarbon environments |
| Internal weight | Positions the pivot point (center of gravity) in the immediate vicinity of the cable connection |
| Contact switch | Electrical control switch (max. 21.4 mA / 13 V) |
| Cable | Special blue cable for use in hydrocarbon environments |
| Filling | Closed-cell, non-hygroscopic injection-molded polyurethane |
Warning (safety): the controller must be connected to an intrinsically safe power supply circuit. The use of the ATEX-certified EMS-Ex safety module, designed for explosion-proof float switches, is recommended. W To prevent electrostatic charge from building up on the housing, the device should be used to monitor liquid levels in tankers, tanks, wells, etc., ensuring a low liquid flow rate.
Ex approval / classification (ATEX)
| Parameter | Value |
|---|---|
| Group and category | II 1G |
| Intrinsically safe design | Ex ia |
| Explosion 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 equipment in hazardous areas. The requirements of EN 60079-14 and EN 60079-17 and the provisions of EN 60079-0 and EN 60079-11 must be observed.
| Electrical parameter | Value |
|---|---|
| Marking | Ex II 1G Ex ia IIC T6 |
| Input voltage (Ui) | ≤ 13 V |
| Input current (Ii) | ≤ 21.4 mA |
| Self-capacitance (Ci) | approx. 0 |
| Self-inductance (Li) | approx. 0 |
Accessories (optional): safety barrier / EMS-Ex safety module for DIN-rail mounting with two independent channels. Each channel enables control of a safe-area load using LITTLE EX or a proximity sensor located in the hazardous area.
- Product weight [kg]: 2.0
- Number of pumps supported: 1