We just received a product feedback from our Singapore customer regarding our pressure level sensor HPT300 sample, saying when they had connected it to dripping pipe of 20mm which the max pressure this pipe can support is ~30PSI. Most of pressures measured found OK and in range of ~21PSI.

While in one of measures by this pressure level sensor, they saw 70PSI which is the max range, but the dripping pipe cannot stand in this. After checking the parameters of the sample, measuring range 0-70psi, input 0-5v, three-wire system, 12Vdc power supply, G1/2 male, 5m cable, we concluded that there is probably hammer effect. Hammer can harm valves, pipes, and gauges in any water, oil, or gas application. It occurs when the liquid pressure is turned from an on position to an off position abruptly.

Our pressure sensors will not detect super-high pressure of 70PSI without a reason, the reason might be that the medium does reach 70PSI or over at a time point. Considering the hammer effect badly damages the sensors, we generally would recommend our customers add a damping which can effectively reduce the sharp shock of pressure from the medium, if the customers have no quite strict requirement on the response time and the medium to be measured is clean water. After following our suggestion, now they have no problem about the measured values and effect.