Anderson IZMSG, Инструкция по эксплуатации

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Anderson Instrument Company
4-5
AIC2071
Converter with LCD Display or Portable MSD Service Terminal
The procedure for hydraulic zero adjustment (Zero Adjust) for flowmeters
with converters with LCD display or portable MSD service terminal is
similar to flowmeters without LCD display. However, the LCD display and
portable MSD service terminal provide additional visual feedback on the
progress and satisfactory completion of the automatic zero measurement.
To conduct a hydraulic zero adjustment (Zero Adjust):
1. Make sure the wiring between the meter body and converter is set in the
final fixed position. All wiring connections must be in proper terminal
locations with tight and dry connections.
2. Allow 5 minutes for the flowmeter to warm up to operating temperature.
In order to maintain thermal stability, close but do not tighten the
converter cover during the hydraulic zero adjustment procedure, except
when access to the converter is necessary to press buttons or observe the
LED status.
3. Fill the flow tube of the meter body with liquid product or water. The
electrical conductivity of the product must be greater than
100 micromhos. It is essential that the fluid remain static (no flow or
leakage whatsoever) and there is no entrained air in the product during the
hydraulic zero adjustment procedure.
4. Open the cover of the converter. Slide the CAL/MEAS switch on the
Main Board to the left to the CAL position.
5. Press the Zero Adjustment pushbutton S4 on the Junction Board
momentarily (about 2 seconds) and then release. The following visual
display appears:
The cursor counts down right to left for 40 seconds showing the progress
of the automatic zero measurement. At the end of the 40 second automatic