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Taking Measurements
Current to Pressure Converter (I-P) Task
•
Use the Up
required value. Alternatively, press ENTER and use cursor keys to enter a
finite value. Cursor keys can then be used to nudge the output either up or
down.
If required, change pressure units with INPUT key. A flashing CHECK LOOP
message indicates either an open circuit supply loop (or no external
supply).
Pressure Switch Test (P-SWITCH) Task
External Pressure Source
(Indicator Only)
Pressure
Regulator
•
Contact state will be shown on display. When contacts close, buzzer sounds.
•
To run switch test , close vent valve and press the RUN (F1) key.
•
Using the handpump, increase the applied pressure to just below the
switch operating point. Screw the volume adjuster in until the switch
operates (the operating pressure of the switch is then written to the
display).
•
Reduce pressure until the switch releases (indicated by the switch symbol).
The release pressure is then written to the display and the hysteresis
displayed.
K249 Issue No. 4
and Down
cursor keys to adjust the loop current to the
External
Pressure
Supply
max 30V
DPI 615 IS
TASK : I-P
SNAPSHOT MODE
bar
PRESSURE INT
OUTPUT
NEW VALUE
OK
CURRENT
mA
F1
F2
DPI 615 IS
TASK : P-SWITCH
SNAPSHOT MODE
CONTACT STATE
PRESSURE INT
RUN
F1
14
SAFE
-
-
P
EXT
SUPPLY
I
+
+
-
BARRIER
SAFE
max 30V
bar
F2
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