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How to Calibrate Penumatic Transmitter.LRV= -60 URV= -20.Can
u give me Answer.
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Answer Posted / suvendu sekhar giri
You can give positive pressure on low pr side keeping the
high side open to atomosphere for lrv (-60) & urv (-20)or
you can give negative pressure on high pr side for lrv(-60)
& urv(-20) keeping low side open to atomosphere.You can
adjust zero at lrv & span at urv. If it is smart
transmitter then you can zero trimming keeping both the low
& high pressure side open to atmosphere.
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