Anderson IZMSG, Инструкция по эксплуатации

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Anderson Instrument Company
4-7
AIC2071
Zero Test
A separate function called Zero Test is available when using a converter
with LCD display or portable MSD service terminal. A Zero Test is
conducted under the same conditions as a Zero Adjust (full flow tube, no
flow), but the zero value from a Zero Test is only displayed rather than
stored. The Zero Test value is displayed for reference and comparison to the
actual zero value stored in the non-volatile memory of the converter. After
being displayed, the Zero Test value is discarded.
Caution
Do not perform a Zero Adjust when you only want
to perform a Zero Test. The Zero Adjust procedure
will cause a new zero value to be stored in the
non-volatile mem ory of the converter thus
changing the condition of the installation.
To a conduct a Zero Test:
1. Make sure the flow tube is full of product.
2. Make sure there is no flow or leakage.
3. Check all connection cables to make sure the terminations are tight and
dry.
4. Open the cover of the converter. The CAL/MEAS switch on the Main
Board must be in the MEAS position.
Note: The position of the CAL/MEAS switch determines whether a
Zero Test or Zero Adjust will be performed:
Position of
CAL/MEAS Sw itch
Function Perform ed
MEAS Zero Test
CAL Zero Adjust
5. Press the Zero Adjustment pushbutton S4 on the Junction Board
momentarily (about 2 seconds) and then release.