Whine!
I designed a safety lock out circuit with a Texas Instruments Low Pressure sensor. Closed above 90 PSIG and opens at 50 PSIG. It only had one job to do: Open the circuit if the pressure ever gets below 50 PSIG.
It failed. Twelve years after the install, it would not open the circuit until the pressure got down to 18 PSIG. That means it never worked, even once.
Part # HQ1087039TX
Presently sold at Graingers under part number 6ALA6
I'd say, "Don't bet a $700 compressor on a Low Pressure switch" but as far as I know, there is no better way to detect a pressure problem.
As a back-up to the back-up, I will install a thermal switch set at about 35 F.
I designed a safety lock out circuit with a Texas Instruments Low Pressure sensor. Closed above 90 PSIG and opens at 50 PSIG. It only had one job to do: Open the circuit if the pressure ever gets below 50 PSIG.
It failed. Twelve years after the install, it would not open the circuit until the pressure got down to 18 PSIG. That means it never worked, even once.
Part # HQ1087039TX
Presently sold at Graingers under part number 6ALA6
I'd say, "Don't bet a $700 compressor on a Low Pressure switch" but as far as I know, there is no better way to detect a pressure problem.
As a back-up to the back-up, I will install a thermal switch set at about 35 F.
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