Version : 17.0
I0000756
Page 4 of 5
Note: In Bidirectional mode, a value of 0 PSID will have an output equal to 50% of the full output range.
ACI/Part No.
SW7 Position 5: 1
SW7 Position 5: 2
Position 4: A
Position 4: B
Position 4: A
Position 4: B
A/WPR2-30
±
30 PSI
±
15 PSI
±
7.5 PSI
±
3 PSI
A/WPR2-100
±
100 PSI
±
50 PSI
±
25 PSI
±
10 PSI
1
3
4
2
5
ON
Figure 1
ENGINEERING UNITS ADJUSTMENT
This option is ONLY for units with LCD display. Switch DIP switch SW7 position 3 to select PSI or BAR.
Advanced Features
For units with LCD display:
“
ERROR
” icon will be on when differential pressure is out of range.
“
OVR
” icon will be on when gage pressure is out of range on either the high or low port.
Trouble Shooting
Problem
Trouble Shooting Steps
“ERROR” icon on Display will be on
when differential pressure is out of range.
The differential pressure could be lower or
higher than the selected range.
“OVR” icon on Display will be on when
the input pressure is > than Max Line
Pressure. Check pressure input with a
gauge or other test instrument. The
WPR2-300 Series is available for
pressures over 100 PSI.
1.
Verify the HIGH Sensor Voltage is between
0.5 VDC (0 PSI) and 4.5 VDC (Max. Line Pressure)
When measuring from the HIGH Sensor terminal
Block “GND” to “OUT”. If out of range call ACI for
Technical support.
2.
Verify the LOW Sensor Voltage is between
0.5 VDC (0 PSI) and 4.5 VDC (Max. Line Pressure)
When measuring from the LOW Sensor terminal
Block “GND” to “OUT”. If out of range call ACI for
Technical support.
3.
Verify in Uni-Directional Mode that the HIGH Sensor
Voltage is ≥ the LOW Sensor Voltage. If voltage is
anything different call ACI for Technical support.
Output reading @ 4mA or 0 VDC
all the time
1.
Verify proper Supply Voltage at the transducer meets the
Product Specifications.
2.
Verify 5 VDC Reference voltage across “VIN” to “GND”
terminals for both the HIGH & LOW Sensor
terminal blocks. If voltage is anything different than
5VDC call ACI for Technical support.
Erroneous Readings
1.
Bleed Air from System.
2.
Repeat the Auto Zero calibration on page 2.
