HORN FMT 120, Operating Manual, Page: 8 / 12

4.8 Calibration:
Press button PRESET for approx. five second means
starting calibration process. Indicated is on top line
0.00 as well as on botton line the activated calibration
factor (CAL 1 or 2).
The calibration factor CAL 1 is fixed on 1000 and is
not changeable. The calibration factor 2 is fixed by
manufacturer on 1000 and can be changed.
The calibration mode can be switched over between
CAL 1 and 2 by pressing button PRESET: Press
button START for approx. one second means
activation of the indicated calibration factor.
The calibration process can be interrupted at any
time by pressing button TOTAL.
In order to carry out an own calibration of the meter
following steps are necessary:
1. Activation of CAL 2 (as mentioned above).
2. Dispensing of a chosen quantity (e.g. 20 Liter/ 5 gallons) into a measuring vessel.
3. After dispensing the calibration has to be changed with buttons and as long as the indicated
quantitiy is conforming with the measured quantity in the vessel.
4. Press button START for approx. one second.
Notice: A modification of CAL 2 is also possible without previous dispensing quantity.
5. Maintenance
- The meter just requires very little maintenance.
- Nevertheless, due to existing regulations the casing must regularly be checked for damage.
- When the battery has to be changed the battery symbol is shown in the display. Carefully open meter
housing and remove battery from the lower part of the housing. Set in new battery and fix with
provided cable. Close meter housing.
(Battery kit: spare parts list pos.-no. 130)
6. Service
The meter was developed for operation with a minimum of maintenance. Therefore, please use this
FMT as described in the operation manual. In case you need service, please contact our after-sales
service: (0049) 461 - 869627.
-8-
Start
Stop
Preset
Total