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7. When the pressure of each calibration point becomes stable and is displayed in green, record the
output value of the HART transmitter at each point, or use the snapshot feature
3.6.4 Pressure switch
1. Prepare
Open the pressure output area of main operation interface: High-pressure or low-pressure range
(depends on the range of the switch)
Switch the electrical measurement item of main operation interface to: Switch measurement
2. Connection
Connect the switch as shown in Figure 3-16 (it is a mechanical switch in the figure. If the tested
switch type is NPN or PNP electronic switch, please connect the electric circuit as shown in Figure
3-8 or 3-9).
3. Capture of the action value
To capture more accurate action values, you can enter "control settings" and set the slew rate to a
lower value which will reduce the lag time between the calibrator and the switch.
Separately use the upper and lower range limits of switch as the target value for pressure control
until the switch acts. Then, capture and display the action value.
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