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Operating instructions - digital oval gear meter and pulse meter
US
8.3.2 Calibration during simulated operation
This procedure is basically a simulated output of liquid into a calibration vessel under actual operating
conditions (ow, rate, viscosity etc.). The procedure must be carried out with utmost care.
NOTE
Absolutely bear in mind the following points in order to guarantee proper calibration:
Have your equipment properly vented before calibration.
Use a calibrated vessel holding at least 5 litres with a precise full mark.
For calibration, tap a certain amount of test liquid with a constant ow rate,
exactly as you would do in normal operation. Continue until the vessel is full.
Do not decrease the ow rate when you approach the full mark. Instead, turn
the spigot on and o and ll the vessel in small batches, but make sure the ow
rate remains unchanged.
When you are nished be sure to wait a few minutes and let air bubbles escape
that may still be in the calibration vessel. Otherwise there is a danger you get a
wrong value because the level in the vessel may still go down.
Be sure to carry out the following procedure correctly.
8.3.3 Meter calibration during simulated operation
Operation Display conguration
1 NONE
Meter is in default standby mode, not counting.
2 PRESS TOTAL SEVERAL SECS
Meter switches to calibration mode, displaying TOTAL.
Display no longer shows total volume, but instead the valid
calibration factor. FACT and USER indicate whether valid
calibration factor is FACTORY K FACTOR or USER K FACTOR.
3 PRESS RESET SEVERAL SECS
Meter shows TOTAL display and the resettable total register
displays zeroes. Meter is now ready for simulated operation
calibration.
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