Tech Tip – Pressure Sensor Care

If you run your dragline equipment with a faulty pressure transmitter, you increase the risk of serious problems. These issues can create safety hazards and lead to costly repairs. In cold weather scenarios, it's even possible to see transmitters freeze and become unresponsive. In some cases, debris and other operating conditions can put these transmitters in a difficult position.

Puck equipment has transmitters fixed to the inlet and outlet of the plumbing with a 90-degree fitting. That fitting is filled with a standard NLGI 2 grade grease from the inside of the pipe out toward where the sensor connects. This method expels air pockets and provides a sensing transfer media that doesn't freeze. It also prevents debris from contacting the transmitter face. Outlet pressure sensors, depending on equipment type, may need inspection more regularly given the orientation of directed, compressed air from an air compressor coupled to a pig launcher. When reinstalling the transmitters, be careful to not over-tighten the sender. This can also cause failure at the measurement interface.

For more information on caring for the pressure sensors on your equipment, call Puck at (712) 655-9200.