Practical Instrument Electronics 850 - Manual (Page 35)

Page 33
Pr
eliminar
y
All Frequency
Connections
Read Pressure
Choose this function to measure pressure in one of 32 different
engineering units using a PIE Pressure Module.
1) Move the power switch w to READ then Double Click the
EZ-DIAL knob to get into the Menu. Turn the knob to scroll
through the settings and press the knob to make your selection.
Select PRESSURE for the FUNCTION and make your choice of
UNITS to match the pressure instrument to be checked.
2) Remove the covers from the ends of the connector on the
pressure module cable and the pressure connector of the 850.
Align the white arrows and plug the cable into the 850.
3) Connect pressure hoses, fittings & pumps (if required) to the
pressure instrument to be checked.
4) Press and hold the e E-Z DIAL KNOB for 2 seconds (after
MAX/MIN RESET appears) to 'Zero' or 'Tare' the pressure. The
display will briefly display 'TARE ON' then a '
0'
appears on the
display indicating that all measurements are relative to the
pressure measured when the calibrator was zeroed. Press and
hold the
e E-Z DIAL KNOB for 2 seconds (after MAX/MIN
RESET appears) when you want to turn the 'Tare' off.
The PIE 850 measures the pressure and constantly updates the
display with the current reading. Move the EZ-CHECK switch
q
to MAX to see the highest reading and to MIN to see the lowest
reading. Press and hold the knob
e for 1 second to clear the
MAX and MIN readings.
To disconnect the pressure module gently pull up on the groved
area just above the white arrow.
T/C
All mA∙ Read V
-
2 3
RTD
Ω
RTD
Ω
6 5
4
+
Source & Read Hz∙ mV
Source V∙ pH
- +
1
-
Port for Pressure Module