BR1 1:6 M B MOORE P H L S H L S RES. RES. RES. .007 .005 .005 TO LOGGER LOGGER TO 20# PT2 PT1 0-100# 0-50# TO ATMOSPHERE 1.22 MM VENT EQUALIZING BALL VALVE ISOLATION BALL VALVE ISOLATION BALL VALVE BALL VALVE CALIPER ACTUATOR ACTUATOR PRV1 PRV2 85 PSIG 0 5 20 25 30 10 15 0 100 160 40 80 60 120 140 20 0 75 25 100 50 0 10 20 40 50 30 0 2 3 10 1 5 BV1 BV2 BV3 BV4 ACT1 ACT2 LOGGER TO PB2 NC ANCHORED ANCHORED 0 100 160 40 80 60 120 140 20 ISOLATION BALL VALVE BV5 B M 1 ALTERS RANGE TO 0-10# DA ISOLATION BALL VALVE BV6 ISOLATION BALL VALVE BV7 B M 1 2 4 6 7 8 9 0 2 3 10 1 4 5 6 7 8 9 S1 EQUAL DIFF. GS1 RC1 RC2 10 PSIG DIFF. 10 PSIG DIFF. 50 PSIG DIFF. 100 PSIG PB1 NO PRESSURE REDUCING VALVE HIGH PRESSURE AIR RANGE RANGE RANGE RANGE RANGE RECEIVER CONTROLLER RECEIVER CONTROLLER AMPLIFYING RELAY PRESSURE REDUCING VALVE PRESSURE TRANSMITTER PRESSURE TRANSMITTER DIFFERENTIAL DIFFERENTIAL PRESSURE GRADUAL SWITCH MANUAL RANGE NOTES -Actuators ACT1 and ACT2 are identical. -The apparatus’s purpose is: (1) Precisely determine the minimum differential pressure required, causing ACT1 to over power ACT2, driving the linkage from push button (PB1) to push button (PB2). (2) Illustrate the varying rate of achieving the travel from PB1 to PB2 relative to the differential pressure changes for 3 PSIG, 4 PSIG, 5 PSIG and 6 PSIG. -Pressure transmitter (PT1) measures the main pressure in ACT1 and provides data. -Differential pressure transmitter (PT2) measures the differential pressure between ACT1 and ACT2 and provides data. -Receiver controller (RC1) allows a magnified range, displaying only a ten PSIG differential, for more accurate readings in the data collection. -Receiver controller (RC2) controls the differential pressure to match the desired differential pressure, between ACT1 and ACT2, as set manually via gradual switch (GS1) TEST PROCEDURE (1) Manually set PRV1 to 85 PSIG, as the base test pressure, and PRV2 to 20 PSIG serving the control circuit. (2) Manually set GS1 to demand 0 PSIG differential and manually open BV1. (3) Manually close BV6 and slowly bleed air to atmosphere via BV4 until PB2 removes its signal from logger. (4) Manually close BV4 and open BV6; then close BV1; then zero caliper. (5) Manually set RC2’s set point, via GS1, to 3 PSIG differential. ACT1 pressure = 85 PSIG and ACT2 pressure = 82 PSIG at this point. (6) As the linkage moves toward ACT2, PB1 is released, sending its signal to the logger, which alters the graph green line (page 5) from minimum to maximum. When the linkage pushes PB2, it sends its signal to the logger altering the graph red line from minimum to maximum. (7) Repeat steps two to five for 4 PSIG, 5 PSIG and 6 PSIG differential. 13.264
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