FMT Swiss AG NUMERIxx3, Operating Instructions Manual

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Operating instructions digital oval gear meter 

G

6.3  Calibration mode

The meter has a fast and precise electronic calibration mode where you simply change the so-called 
calibration factor (K FACTOR).

There are two calibration procedures you may choose from:

Simulated ope calibration (requiring actual output of liquid to be carried out).

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Direct calibration (simply changing the calibration factor).

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You may want to call up the calibration procedure for the following reasons (press TOTAL button for a 
prolonged period of time):

To display the valid calibration factor

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To reset the calibration factor pre-set at the factory (Factory K Factor) after calibration by the userr

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To change the calibration factor using one of the two available calibration procedures

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During calibration, the registers on the LCD display - that normally show partial and total volumes of liquid 
output - will take on new meanings.

During calibration, the meter cannot carry out normal output operation.

During calibration, the count of the absolute total volume of liquid having been output (non-resettable 
Total) will not increase.

Tip
The oval gear meter is equipped with a non-volatile memory so that calibration data and total 

volume will remain in store for a long period of time – even without power supply. That means you 

don‘t have to re-calibrate after you have exchanged the batteries.

6.3.1  Displaying the valid calibration factor - resetting the factory calibration factor (if 

necessary)

Go to default standby mode. Press the TOTAL button. The display shows the valid calibration factor.
Two situations are possible:
a)  User never changed the calibration factor and/or user restored the factory calibration factor after  

changing it: the display will show the following:

The word „FACT“(ory) indicates that the valid calibration factor is the factor pre-set at the factory.

b)   If the user has changed the calibration factor, the display will show the new value (in our example:    

0.998).

The word „User“ indicates that the calibration factor currently used was entered by the user.