Hoffer Flow Controls Integrated Cryogenic Electronics HP-319, Быстрый старт

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HP-319 36 ICE Quick Start Guide
ICE WEIGHT SCALE CALIBRATION PROCEDURE
Turbine flowmeters, when properly used, have been found to be
more accurate than most weight scales in determining the amount of
product delivered. Whenever possible use Hoffer portable Transfer
Standard SY-14B to perform ICE system calibrations. This
procedure requires the use of two tankers. One full of fresh cold
product and a empty tanker. Place the full tanker onto the scales.
Hook up the piping so that the full tanker will be pumping off to the
empty tanker. Follow the steps below:
1. Power up the ICE unit and enter the MENU.
2. Select CALIBRATION mode. Set K-METHOD to AVERAGE.
3. Record the AVERAGE K-FACTOR value.
4. Select SYSTEM CONFIGURATION MODE. Set DELIVERY
UNITS to mass (KG or LB).
5. Return the ICE to the OPERATING mode.
6. Pressurize and cool down the piping and flowmeter.
7. Press the CLEAR key on the ICE twice to clear the total.
8. Weigh the tanker and record its INITIAL WEIGHT. After
weighing the tanker start the pump.
9. To determine the TEST SAMPLE SIZE, divide the scale
increment by the accuracy requirement. For example, if scale
increment is 10 pounds and the accuracy requirement is 0.5%,
then 10 pounds / 0.005 = 2000 pounds. It is best to use an
accuracy requirement equal to the linearity rating of the
flowmeter (typically 0.5%)
10. Open the discharge valve and allow the tanker on the scales to
pump off an amount of fluid equal to the TEST SAMPLE SIZE.
After the TEST SAMPLE SIZE is pumped, close the discharge
valve. Weigh the tanker again, this is the tanker FINAL
WEIGHT. Calculate the SCALE TOTAL by subtracting the
FINAL WEIGHT from the INITIAL WEIGHT.