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78
GF 9950-10 Six Channel Transmitter
Volume Calibration Procedure
1. Press ENTER to start the volumetric calibration period.
The 9950 starts counting pulses from the
fl
ow sensor.
2. Press ENTER to stop the volumetric calibration period.
The 9950 stops counting pulses from the
fl
ow sensor.
3. Enter the volume of
fl
uid known to have
fl
owed past the sensor during the volumetric calibration period. This will modify the
existing Flow K-Factor.
4. The 9950 displays the newly calculated K-Factor for your reference. (If the calculated K-Factor is less than 0.0001 or greater
than 999999 (out of range at either extreme), the 9950 displays "ERROR VOLUME TOO HIGH" (or LOW) and returns to
VOLUME CAL).
5. Press ENTER to accept the new K-Factor (9950 displays "SAVING") or press
▲
+
▼
keys simultaneously to escape without
saving and return to Enter Volume.
NOTE:
You may enter your own calculated K-Factor in the CAL menu.
Rate Calibration Procedure
1. Press
the
►
to enter the rate calibration.
2. Allow
the
fl
ow to stabilize and then press the
►
.
3. Using
the
▲
,
▼
, and
►
keys, set the
fl
ow rate in the text box to match the
fl
ow rate of the system.
4. 4.
Press
ENTER to complete the
fl
ow rate calculation.
5. The 9950 displays the newly calculated K-Factor for your reference.
(If the calculated K-Factor is less than 0.0001 or greater than 999999 (out of range at either extreme), the 9950 displays
"ERROR NEW KF OUT OF RANGE" and returns to RATE CAL. If
fl
ow is too low to accurately calibrate, the 9950 displays
"ERROR FLOW RATE TOO LOW and returns to RATE CAL.
6. Press ENTER to accept the new K-Factor (9950 displays "SAVING") or press
▲
+
▼
keys simultaneously to escape without
saving and return to Enter Volume.
NOTE:
You may enter your own calculated K-Factor in the CAL menu.
Calibration Procedure - Flow
Select RATE CALIBRATION to match the dynamic
fl
ow rate to an external reference. Entering a rate will modify the existing
K-Factor.
Select VOLUME CALIBRATION if the
fl
ow rate can be determined by
fi
lling a vessel of known volume. The 9950 will count
the number of pulses generated as the known volume of
fl
uid passes through the sensor, and then use the information to
calculate a new K-Factor.
CH 1 Flow
FLOW UNITS
RATE CAL ->
GPM
50.00
SET FLOW
50.00
SET FLOW
0050.00
0
AM/PM
CH 1 Flow
FLOW UNITS
VOLUME CAL ->
CH 1
50.00
ENTER VOLUME
0050.00
0
AM/PM
CH 1
RUN
STOP <ENTER>
START <ENTER>
Calibration Procedures - Flow
Refer to page 77 to troubleshoot Calibration Errors