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Automated Pressure Calibrator
General Tasks
47
Leak Test
This function performs an automated leak test to show the rate of pressure loss.
To determine the rate of pressure loss, the Product uses the test parameters to
set the pressure to a Setpoint value. Once stable, the Product turns off pressure
control to measure the pressure loss. To help determine if a leak is external to
the system or inside of the system, the leak test mode can be changed to internal
or external.
To run a leak test, set these parameters to tell the Product how to perform the
leak task:
Setpoint Pressure – The target pressure of the test.
Stability – Tells the length of time that the pressure is dynamically stabilized at
the Setpoint before the test starts. The test does not start until the Product shows
the ready indication for the amount of time prescribed.
Duration – After reaching the stability time, the test starts and the Product
changes to Measure mode. The system then measures the rate of pressure loss.
When the test ends, the average rate of pressure loss per minute is shown. Time
duration can be set here.
Program Switch
To test a pressure switch:
1. Go into the Setup menu.
2. Connect the UUT to the switch test terminals on the front of the Product
(EM300 input terminals) with the pressure switch terminals to the pressure
switch contacts (de-energized dry contacts). The polarity of the terminals
does not matter. Connect the test port of the Product to the input of the
pressure switch.
3. Select Tasks>Switch Test. Use the keypad to enter the switch test values
into the Switch Test menu.
4. Configure the test:
Start – Minimum Setpoint pressure
End – Maximum Setpoint pressure for the test
Rate – This is the slew rate to determine how quickly the pressure will
increase or decrease. For sensitive switches, Fluke Calibration recommends
a slower rate.
Direction – Select whether to increase then decrease pressure (up and
down), or a one-time upward test (single).
5. Select Run to start the test. The task bar shows the progress of the test and
also the state of the switch (Open or Closed). The test is fully automated and
progress can be viewed at any time.
The Product changes the pressure over the specified range at the required
rate. When the switch changes state, the Product records the pressure. The
results of the switch test are shown on the display when the test completes.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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