Solenoids for Use in Hazardous Locations
Customer Problem
When a pump in a fluid handling system loses liquid, it can overspeed, resulting in damage that can greatly reduce the life of the pump. A manufacturer wanted to eliminate this issue in its heavy-duty paint sprayers by automatically stopping the pump when the paint reservoir ran out of paint. Since atomized paint is flammable, the solution needed to take precautions against fire and explosion.
The TLX Solution
TLX designed an intrinsically safe high-speed latching solenoid, which used energy-limiting circuitry to keep the solenoid’s electrical output below the threshold for ignition. At the beginning of an overspeed condition, the solenoid’s plunger immediately extended to stop the pump so that no damage could occur. The latching solenoid used only a short pulse of current to extend the plunger and drew no current to maintain position.
Intrinsically Safe Latching Solenoid
- Stroke
- 3.05 mm
- Supply voltage
- 6, 12, or 24 Vdc
- Response time
- 17-26 ms
- Operating temperature range
- -40°C to 60°C (-40°F to 140°F)
- Operating voltage
- 6.8 to 7.8 Vdc
- Coil resistance at 20°C
- 13.0 ± .5 Ω
- Inductance at 1 kHz
- 26 mH max.
- Net spring preload
- 2.9 N (.65 lb) min.
All TLX components are customized to fit system requirements, meaning technical specifications are unique to each customer and design. Examples given on our website are for illustration purposes only.
Are you designing the technology of tomorrow?
Start your conversation with a TLX engineer today.
