Accessing The Calibration Menu; Alow Option = [F1]; Ahigh Option = [F2]; Ma Option = [F3] - GE DigitalFlow DF868 Service Manual

Chapter 1. Calibration

1.4.1 Accessing the Calibration Menu

[CAL]
1. Press the key to enter the Calibration Program.
[Fx]
2. Press to calibrate the desired slot. (The option bar will include a slot listing for each installed option card.)
[F1]
3. Press to select the desired input.
The procedure for calibrating
sure a calibrated current source is connected to the appropriate pins on the terminal block. See Figure 3 on page 5 for
the correct pin numbers.
[F1]-[F4]
4. Press to select the reference point to be calibrated.
Do one of the following:
• [F1] (aLOW),
If you selected
•
[F2] (aHIGH)
If you selected
• [F3] (4 mA),
If you selected
• [F4] (20 mA)
If you selected

1.4.2 aLOW Option = [F1]

1. Enter the low reference value and press the
[F1]
2. Press to store the current low reference value or press
prompt will reappear.
[F2]
3. Press to proceed to the next section.

1.4.3 aHIGH Option = [F2]

1. Enter the high reference value and press the
[F1]
2. Press to store the current high reference value or press
prompt will reappear.
3. Proceed to Procedure Options on page 7.

1.4.4 4 mA Option = [F3]

1. Connect the 4 mA current source to the currently selected analog input, as shown in Figure 3 on page 5.
[F1]
2. Press to store the current 4 mA value or press
reappears.
[F4]
3. Press to proceed to the next section.
6
Input A
is identical to that for calibrating
aLOW Option
proceed to
aHIGH Option
, proceed to
4 mA Option
proceed to
20 mA Option
, proceed to
[ENT]
[ENT]
Input B
. However, when calibrating
below.
below.
below.
below.
key.
[F2]
to cancel the entry. In either case, the
key.
[F2]
to cancel the entry. In either case, the
[F2]
to cancel the entry. In either case, the
DigitalFlow™ Multipurpose Ultrasonic Liquid Flowmeter Service Manual
Input B
, be
ANALOG INPUT
ANALOG INPUT
ANALOG INPUT
prompt