UL101 Tests Low Pressure Valves & Steam Traps in Petro-Chem Plant

Recently, the UL101 was put to the test. A certain petro-chem plant uses steam throughout its process to produce fungicides, herbicides, and insecticides. The steam flow and pressure differential within the steam system is just a few psia. This makes the detection of internal by-pass leaks very difficult. However, due to the high sensitivity and great signal-to-noise ratio of the UL101, the technicians were able to distinguish proper steam trap and valve operation.

The UL101 does not require changing frequency to listen to different applications, which makes operation of the detector rather simple.  The sensitivity and signal-to-noise ratio is incomparable to other ultrasound detectors. For these reasons, the UL101 can be used to easily diagnose valves with a single point of contact. If, for example, a valve is open, the UL101 detects the steady flow of gas or liquid as it passes through the valve. When the valve is closed, no sound can be heard. If the valve is closed, and sound can be heard through the headset and/or displayed on the InCTRL screen, there is an internal by-pass leak through the valve. 

InCTRL records the steam trap opening/closing as heard through the UL101.