Switch Test; Upm Pressure Measurements - GE Druck DPI 880 User Manual

Operation - Switch test
To do tests on a switch:
1. Connect the instrument (Figure 12) and, if necessary,
adjust the Set Up (Table 1).
2. Select the applicable switch test from the task
selection menu (Table 2/3) and, if necessary, adjust the
Settings (Table 5). The display shows the switch
condition (open or closed) in the top right-hand corner.
3. Supply the output values to the system (Table 7).
• Example - "Nudge" output.
a. Use Edit (■ ■) to set a value less than the switch
value.
b. Use the ▲ ▼ buttons to change the value in small
increments.
• Example - "Ramp" output.
a. Set "High" and "Low" values that are applicable to
the switch value (Table 6). Then, to get an accurate
switch value, set a long "Travel" period.
b. Use Start/Stop (■ ■) to start and stop the "Ramp"
cycle.
4. If necessary, supply the output values in the opposite
direction until the switch changes condition again.
The display shows the applicable values to open and
close the switch.
5. To do the test again, press ESC to reset the values.
Figure 12: Example configuration - Switch test
K405 Issue 3
Operation - UPM Pressure measurements
Read all the instructions supplied with the UPM and then
use the specified procedures to connect it (Figure 13/14).
Figure 13: Example configuration - Pressure measurement
When the connections are complete, make the necessary
IDOS selections (Table 2/3).
Each time you use a different UPM, the DPI 880 records its
measurement units (capacity: the last 10 different UPM).
When you re-attach one of the last 10 UPM, the DPI 880
automatically uses the applicable units (psi, mbar ... ).
UPM - Measure the pressure/leak test
To measure the pressure with or without a leak test
(Figure 13):
1. Select the applicable pressure task from the task
selection menu (Table 2/3) and, if necessary, adjust the
Set Up (Table 1), and the Settings (Table 4/5).
2. If applicable, set the period for the leak test (Table 4).
3. If necessary, do a zero correction (Table 4).
4. To start the leak test, select Start (■ ■). When the test is
finished, the instrument calculates the leak rate in the
Edit Settings
applicable units/minute.
To measure pressure with another operation (Figure 14),
use the same procedure.
Settings
a) Pressure
with a UPM
Utilities function: Use this function to include the
Leak Test option.
Start Settings
b) Leak test
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