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__________________________ MODEL 2234 DIGITAL FLOW COMPUTER
3.5.1 ENTERING AN OPERATOR - SELECTED VALUE
Set the "enable/disable" switch on PC Board No.1 to the "enable" position in order
to enter parameter values. Return the switch to the "disable" position after making
entries to prevent unauthorized or accidental data entries.
Verify the value entered into the computer during startup. Press the data code
access number(s) (Read Code) and then READ. If the measured value is being
used by the computer, press FXD to display the operator-entered value being held
inactive.
Enter the desired value. Press ENTR. The display will show OK to indicate that
the value is within the acceptable range, then will show the parameter mnemonic,
the units of measurement, and finally the value that was entered.
3.5.2 SWITCHING MEASURED - VALUES AND OPERATOR - ENTERED
VALUES
A.
Assume that the temperature transducer in the line is suspected of
malfunctioning. Assume also that the transducer will need to be removed for
repair while the system is flowing.
First examine the transducer output. The Read Code for monitoring a
temperature transducer is 1 in this example.
Key
1 (Basic Read Code)
READ (Pressed)
READ (Released) DEGF (Units of Measure)
80
Display
1
TF VAR (Variable)
then
56.3 (Temperature)
SECTION 3
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