61
Power up the DPC controller for at least 30 minutes prior to commencing the
calibration procedure. Observe the current analog output mode settings.
For 0-5 or 0-10 Vdc output calibration:
Connect the corresponding type of measurement device (voltmeter) to pins 6 (plus)
and 4 (minus) of the 8-pin MiniDIN connector.
For 4-20 mA output calibration:
Connect the corresponding type of measurement device (ampmeter) to pins 6
(plus) and 4 (minus) of the 8-pin MiniDIN connector.
Follow fi rmware prompts and adjust calibration point values according to your
measurement device reading by use of the joystick
UP
,
DN
,
LEFT
and
RIGHT
buttons.
If you need to abort calibration, press the
Esc
button. When the calibration is complete,
the fi rmware will display new offset and span values and ask the user to press the
joystick
ENT
button to save the new calibration variables to the EEPROM, or to press
the
Esc
button to abort calibration and exit without saving any changes. When the
process is done, the fi rmware will prompt the user with a confi rmation message.
c) Analog Output Test
This menu selection must be used only for troubleshooting purposes as requested by
your customer support representative. It allows for emulating analog output readings
by entering a desired fl ow rate reading in % of full scale, from 0.0 to 110.0%.
CAUTION: When “Analog Output Test” is selected, the output reading does not
represent any actual Process Information (PI) variable (fl ow rate reading).
Adjust the desire fl ow output value using the joystick
UP
,
DN
,
LEFT
and
RIGHT
buttons. Press the joystick
ENT
button to activate analog output. To abort the analog
output test mode, press the Esc button. Once the test mode is deactivated, the analog
output should represent actual fl ow rate readings.
6.4.15.8 Analog Input Confi guration
The DPC series Mass Flow Controllers are equipped with calibrated 0-5Vdc, 0-10Vdc, and
4-20 mA set point input signals. The following options are provided for analog input:
a) Analog Input Mode (Tabular entry)
The user can select one of the following:
0-5 Vdc (100K input impedance)
0-10 Vdc (100K input impedance)
4-20 mA (250 Ohm input impedance)
Summary of Contents for DPC
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