FMT Swiss AG NUMERIxx3 User manual

82 363 A801 GB
NUMERIxx3
Digital oval gear meter
2 - 100 l/min

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GOperating instructions digital oval gear meter
Contents
General details1. ______________________________________________________________________3
Intended use1.1 ________________________________________________________________________3
Design and functional description1.2 ______________________________________________________3
Display LCD1.2.1 _________________________________________________________________________4
User controls1.2.2 ________________________________________________________________________4
Measuring chamber1.2.3 __________________________________________________________________5
Battery compartment1.2.4 _________________________________________________________________5
Technical data1.3 _______________________________________________________________________5
General safety instructions2. ____________________________________________________________6
Information on safety at work2.1 __________________________________________________________6
Signs and symbols used in the safety instructions2.2 __________________________________________6
Hazards that may arise in connection with the oval gear meter2.3 _______________________________6
Assembly3. ___________________________________________________________________________6
Installation4. _________________________________________________________________________7
Routine operation5. ___________________________________________________________________7
Output of liquid during standard operation (Normal Mode)5.1 __________________________________8
Resetting partial volumes5.1.1 _____________________________________________________________8
Resetting the resettable total volume (RESET TOTAL)5.1.2 ________________________________________9
Output of liquid with display of current ow rate (Flow Rate Mode)5.2 ____________________________9
Resetting partial volumes5.2.1 ____________________________________________________________10
Calibration6. ________________________________________________________________________10
Denition6.1 _________________________________________________________________________10
Why calibrate the meter?6.2 _____________________________________________________________10
Calibration mode6.3 ___________________________________________________________________11
Displaying the valid calibration factor - resetting the factory calibration factor (if necessary)6.3.1 ______11
Calibration during operation6.3.2 __________________________________________________________13
Meter calibration during operation6.3.3 _____________________________________________________13
Changing the K FACTOR directly6.3.4 _______________________________________________________16
Conguration of the oval gear meter7. ___________________________________________________17
Service8. ____________________________________________________________________________18
Exchanging batteries8.1 ________________________________________________________________18
Cleaning8.2 __________________________________________________________________________19
Troubleshooting9. ____________________________________________________________________20
Repairs/service10. _____________________________________________________________________20
Manufacturer‘s declaration11. ___________________________________________________________20
Exploded drawing12. __________________________________________________________________21

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Operating instructions digital oval gear meter G
1. General details
1.1 Intended use
This oval gear meter has been designed and built for measuring volumes of various media featuring
dierent viscosities, and for the storage of data so collected.
The oval gear meter is intended for installation at the end of an output hose, e.g. a hose reeler.
1.2 Design and functional description
The oval gear meter is a uid meter with electronic counter & memory and digital display.
The medium owing through the meter causes an oval gear mechanism to rotate which activates a
reed switch. This generates an electrical pulse which is fed to the electronic counter. A multiplication
factor is applied to convert the pulses into an intelligible volume of liquid having gone through the
device, which is then shown on the LCD display.
The multiplication factor has been pre-set at the factory using an average that has turned out to be
useful in normal operation. However, it can be easily adapted to specic requirements by the user.
The total volume measured is stored and can be called up by pressing the TOTAL
button.
Data collection and analysis are being constantly monitored by the electronics. Errors are reported
immediately.
The electronic counter needs a two-phase input signal that‘s being monitored for phase errors. A self
test is being carried out before every reset.
The user needs only two membrane key switches for operation: RESET and TOTAL (i.e. total volume).
The body of the device is made of aluminium.
The electronic components and LCD display sit at the top of the meter, far away from and well insulated
against the wet measuring chamber. There is a cover to protect them against the working environment.
MEASURING CHAMBER
RESET BUTTON
DISPLAY LCD
TOTAL BUTTON

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GOperating instructions digital oval gear meter
1.2.1 Display LCD
The meter‘s LCD display is equipped with two numeric registers and dierent types of display modes
showing information to the user only when it is actually needed with the operation / function going on
at the moment.
Key:
Register of partial volume (5 digits with oating decimal: 0.000+99999) showing the amount of liquid1.
that has been delivered since the RESET button was last pressed
Battery charge2.
Calibration mode3.
Register of total volume (6 digits with oating decimal 0.0-999999x10/x100) showing two dierent4.
kinds of total volumes:
4.1 Non-resettable total volume (TOTAL)
4.2 Resettable total volume (Reset TOTAL)
Total volume multiplication factor (x10/x100)5.
Type of total volume display (TOTAL / Reset TOTAL)6.
Units for total volume: L = litres, Gal = gallons7.
Flow rate8.
Display of measuring unit for partial volumes:9.
Qts = quarters; Pts = pints; L = litres; Gal = gallons;
The display can be positioned in 90° steps relative to the ow direction. To do this, rst remove the four
screws (82 359). The display unit can now be lifted up and rotated through 90° to a new position.
Caution!
When doing this, ensure that the cables from the battery-holder unit (82 356) to the circuit

board (82 360) are not pinched or excessively twisted.
To nish, replace the four screws (82 359) and tighten securely.
1.2.2 User controls
There are two push buttons on the meter (RESET and CAL), each controlling two main functions
(pressed individually) and various auxiliary sub-functions (pressed simultaneously)
Main functions:
RESET button: Resetting the partial volume register and the (resettable) total volume register (
 RESET
TOTAL).
TOTAL button: Calling up the calibration mode. Pressed together, the two buttons call up the

conguration mode where you select the unit of measurement.

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Operating instructions digital oval gear meter G
1.2.3 Measuring chamber
The measuring chamber is located in the centre of the meter.
In the measurement chamber there is an oval gear mechanism which rotates and results in electric
pulses being produced. These are then processed by the microprocessor on the electronic circuit
board.
The microprocessor uses a calibration factor (i.e. a‚weighting‘ assigned to each pulse) to convert the
pulses generated by the gears‘ revolutions into an intelligible value representing the volume of liquid
that has passed through. It is then displayed in the unit pre-set before in the corresponding registers of
the LCD display for partial and total volumes, respectively.
All our oval gear meters leave the factory with a default calibration factor = 1000 called„FACTORY
K FACTOR“. There is a possibility to‚calibrate‘ the meter in order to adapt that factor to the physical
properties of dierent liquids.
However, there is always a possibility to return to the manufacturer‘s default setting.
1.2.4 Battery compartment
The meter is powered by two 1.5V standard batteries (N1).
The battery compartment is located within the meter housing. The housing lid must be removed in order
to replace the batteries.
1.3 Technical data
Designation Digital oval gear meter
Measuring system Oval gear
Resolution l/pulse 0,017
Flow rate range l/min 2 - 100
Operating pressure bar 3,5
Bursting pressure bar 28
Storage temperature °C -20 to +70
Storage humidity R.H. 95 %
Operating temperature (max.) °C 60
Flow rate loss at max. ow
(diesel oil) bar 0,2
Compatible liquids oil, diesel oil, self-lubricating low
viscosity liquids
Viscosity range cSt 2 - 2000
Accuracy (within ow rate range) ±0,5 %
Repeatability 0,2 %
Weight kg 0,65
Inlet / outlet threads 1“
Power supply (batteries) V 2 x 1,5
Lifetime of batteries (est.) h 14.000 - 30.000
Table 1-1:Technical data

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GOperating instructions digital oval gear meter
2. General safety instructions
2.1 Information on safety at work
The oval gear meter has been designed and built in compliance with the applicable safety and health
requirements of the relevant EU directives.
However, hazards may result from this product if it is not used for its intended purpose or with the
necessary care.
In all cases, when operating the oval gear meter, local safety and accident prevention regulations apply,
as well as the safely instructions within these operating instructions.
2.2 Signs and symbols used in the safety instructions
Safety instructions within these operating instructions are indicated by the following keywords and
icons:
Pictogram Keyword Consequences of failure to comply with the safety
instructions
Caution Possible risk of slight to medium physical injury or material
damage
In addition, you will notice general information and tips for handling the product from time to time.
Pictogram Keyword Meaning
Tip Background information and tips on the right way of using the
product
2.3 Hazards that may arise in connection with the oval gear meter
Caution!
The oval gear meter has been designed and is suitable for operation with media of low

ammability, exclusively.
Do not operate this oval gear meter in areas with potentially explosive atmospheres.

Tip
Be sure to know and respect, in particular, any water management laws that may exist. In
Germany, for instance, § 19g of the German Water Management Act („WHG“) provides that
equipment for lling must be designed, constructed, installed, maintained and operated in such a
way that bodies of water are not aected in any critical ways.
The owner / operator of lling equipment is obliged to permanently check and manage any such
equipment for compliance with the afore-mentioned requirements at the place of installation.
3. Assembly
The oval gear meter comes fully assembled and ready to go.
There may be accessories that can or must be tted. This depends on the model you chose.
Tip
During assembly, make sure everything is perfectly clean. Take particular care that components
are well aligned and connected and t tightly.

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Operating instructions digital oval gear meter G
4. Installation
The inlet and outlet of the meter are aligned in a straight axis and equipped with 1“ threads. The meter
may be installed in any given position, as a xed unit in a pipeline and/or as a mobile unit on a spigot.
The meter does not have a pre-dened ow direction. Both ends may alternatively serve as inlet or outlet,
as needed. However, it is absolutely important that the side that is used as inlet (where the pipeline arrives)
is equipped with a lter with suitable performance characteristics. If solid particles get into the measuring
chamber this can result in the oval gear blocking.
5. Routine operation
The oval gear meter comes pre-assembled and ready to go.
Even after periods of prolonged storage, it will be ready for operation without any lengthy preparations.
The only manoeuvre that may be necessary from time to time during normal operation is to reset the
registers of partial and/or resettable total volumes.
To accomplish that, call up the two displays for normal operation. The rst normal operation display
contains the partial volume and resettable total volume (RESET TOTAL). The other display shows the
partial volume and the non-resettable (absolute) total volume. The LCD switches between resettable and
absolute total automatically. This has been set at the factory and cannot be inuenced by the user.
Register of
RESETTABLE
TOTAL VOLUME
Register of
ABSOLUTE
TOTAL VOLUME
Register of partial volume
The register of the absolute total (Total) cannot be reset by the user. It will continue counting during the
entire lifetime of the meter. The resettable and non-resettable registers of total volumes (Reset Total and
Total) share the same‚window‘ and the same digits of the LCD display. For that reason, the two numbers
cannot be viewed at the same time.
The meter has been programmed so that the one or the other total is visible at certain moments / in
certain modes during operation (never both at a time):
The absolute total volume (
 TOTAL) is visible in standby mode.
The resettable total (Reset Total) is visible at the following times / in the following modes:

- For a short moment (several seconds) after resetting the (resettable) partial volume.
- During the output of liquid.
For a few seconds after the output of liquid. As soon as this time span is over, the meter will switch back to
standby mode, and the display of the lower register will show the absolute total.
Tip
For the display of total volumes, there are 6 digits available, plus two icons x10 / x100.
The increments are activated in the following sequence:
0,0 ---> 99999,9 ---> 999999 ---> 100000 x10 ---> 999999 x10 ---> 100000 x100 ---> 999999 x100

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GOperating instructions digital oval gear meter
5.1 Output of liquid during standard operation (Normal Mode)
During standard output of liquid, the meter will count and at the same time display the volume having
gone through the device so far, and the resettable total (RESET TOTAL).
Accidental pressing of the RESET and/or CAL buttons does not have any eect in this state.
A few seconds after you‘re nished, the display of the lower register will change from resettable total to
absolute total: The word RESET above the word TOTAL will disappear, and the value of the resettable
total will be replaced by the absolute total.
We call this state (or mode)„standby“. It will persist as long as the user does not carry out any more actions
on the meter.
5.1.1 Resetting partial volumes
For resetting the partial volume register: Press the RESET
button while the meter is in standby, i.e. while you see the
word <<TOTAL>> in the LCD display.
When you press RESET, the display will rst switch on all the
segments, one after the other, and then switch them all o again.
When the reset is complete, the display will rst show the partial
volume having been reset and then RESET TOTAL.
After a couple of seconds, Reset Total will be replaced by the NON
resettable total volume (TOTAL).

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Operating instructions digital oval gear meter G
5.1.2 Resetting the resettable total volume (RESET TOTAL)
You can reset the resettable total only if you have reset the
register of the partial volumes before. To reset the resettable total:
press RESET for several seconds. The display will show the words
RESET TOTAL (see g.):
You must carry out the following steps (in this order):
1. Wait until the display is back to default standby mode (i.e.
showing only„TOTAL“).
2. Press RESET shortly.
3. The meter will now start resetting the partial volume register.
4. While the display shows the Total to be reset, press RESET
again for at least one second.
5. The display will show all the segments again. Only then follows
the phase where all segments are switched o. Finally, there
will be a display showing the total that has been reset (RESET
TOTAL).
5.2 Output of liquid with display of current ow rate (Flow Rate Mode)
It is possible to output a liquid and have the following displays available:
partial volumes having been output

Current ow rate (Flow Rate) in [unit of partial volume per min.], as shown below.

This is how you get into this mode:
Wait until the meter is default standby mode (i.e. the display shows only the total volume).

Shortly press the TOTAL button.

Start output operation.

The display of the current ow rate will be updated every 0.7 secs. For that reason the display may‚utter‘
somewhat with low ow rates. However, the higher the ow rate, the more stable the display will be.
Tip
The current ow rate will be shown in the unit set for the partial volume register. That means if
partial and total volume have been set to dierent units (as shown in the example below) you
must bear in mind that the ow rate shown is in the unit set for partial volumes. In the example
shown, the ow rate is in qts./min.
The word‚‘Gal‘‘ next to the ow rate refers to the register of the (resettable and nonresettable) total
volumes which will be displayed again as soon as you leave the‚current ow rate‘ display mode.
In order to go back to the default standby mode, press the TOTAL button again.

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GOperating instructions digital oval gear meter
Accidental pressing of the RESET and/or TOTAL buttons does not have any eect in this state.
Tip
Reset Total and absolute total (TOTAL) are not shown in this mode. However, the values
nevertheless go up, of course. You can check after you‘re nished. Wait for the default standby
mode and press TOTAL shortly.
5.2.1 Resetting partial volumes
In order to reset the partial volume register, you must rst complete the output of liquid. Wait until the
display shows a ow rate of 0.0 (see g.). Then press the RESET button shortly.
The eect is dierent from what you would have if you press Reset in default standby mode. There is no
phase where all the segments are rst switched on and then o again. Instead, the register will display the
reset partial volume immediately.
6. Calibration
6.1 Denition
Calibration factor ->„K FACTOR“:
That‘s the multiplication factor the system ascribes to the electronic pulses it receives in order to convert
them into a plain unit of measurement.
FACTORY K FACTOR: Calibration (default) factor pre-set at the factory. Factory K Factor = 1000.

This calibration factor guarantees the highest degree of precision under the following operating
conditions:
Liquid Engine oil type 10 W-30
Temperature 20 °C
Flow rate 2-20 l/min
You can always return to the original Factory K Factor even after you have changed the value. The
procedure is simple.
USER K FACTOR: That‘s the calibration factor the user has set to adapt the meter to specic

requirements (i.e. the user has carried out a calibration procedure).
6.2 Why calibrate the meter?
The oval gear meter comes to you with a calibration factor pre-set at the factory that will guarantee the
most precise measurements under most operating conditions.
However there may be cases when it is advisable to calibrate the meter under the actual operating
conditions, for example in extreme operating conditions :
liquids having a viscosity close to the admissible limits (e.g. antifreeze with low viscosity, high-viscosity

oils for gearboxes)
extreme ow rates (i.e. close to upper or lower limits)


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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 operation + calibration (requiring actual output of liquid to be carried out).

Direct calibration (simply changing the calibration factor).

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

To reset the calibration factor pre-set at the factory (Factory K Factor) after calibration by the userr

To change the calibration factor using one of the two available calibration procedures

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.

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GOperating instructions digital oval gear meter
The ow chart below shows display variations for dierent modes that the LCD display may go through.
In this mode, the user may press RESET and thus change to the FACTORY K FACTOR.
In order to conrm your choice: Shortly press TOTAL while the display shows either„USER“ or„FACT“.
After re-start, the meter will use the new calibration factor you just conrmed.
Tip
When you conrm restoration of the Factory K Factor, the old user factor will be deleted from
memory.
Standby
Standby
Standby
Reset long
Reset short
Total long
Total short
Time OL 1
Key

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Operating instructions digital oval gear meter G
6.3.2 Calibration during operation
This procedure basically involves discharging of liquid into a calibration vessel under actual operating
conditions (ow, rate, viscosity etc.). The procedure must be carried out with utmost care.
Tip
Note carefully 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, discharge 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‘re 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.

6.3.3 Meter calibration during operation
Action Display
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, but valid K Factor.„FACT“ or
„USER“ indicates whether valid calibration factor is (Factory
K Factor or User K Factor).
3 PRESS RESET SEVERAL SECS
Meter shows„TOTAL“ display -> resettable total register
displays zeroes. Meter is now ready for operation
calibration.

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GOperating instructions digital oval gear meter
4 DISCHARGE LIQUID INTO CAL VESSEL
Start discharge operation, but do not press any buttons yet.
Discharge may be interrupted and continued as necessary.
Continue lling the vessel until full mark is reached. It is not
necessary to top out at any specic value.
Set value Actual value
5 PRESS RESET SHORTLY
This is how the meter‚knows‘ that simulated operation for
calibration is complete. Make sure cal vessel has really been
lled up to full mark before you do this.
For calibration you must correct the count indicated by
the partial volume register (ex.: 9,800), entering the actual
value, i.e. the volume of the cal vessel. There‘s an arrow
bottom left of display (pointing up or down) indicating the
direction of changing USER K FACTOR (up or down) to carry
out actions 6 or 7.
6PRESS RESET SHORTLY
Direction of arrow ips. This may be repeated as often as
necessary.

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Operating instructions digital oval gear meter G
7PRESS TOTAL SHORTLY / SEVERAL SECS
Value indicated will change as indicated by arrow:
One increment per each pressing of TOTAL.

Continuously if TOTAL is pressed continuously (rst 5

increments slowly, then fast).
If you overshoot, go back to point 6 and repeat (6).

8PRESS RESET SEVERAL SECS
This is how the meter‚knows‘ that calibration is now
complete.
Before you press the button, be absolutely sure the
display shows the correct value (volume of vessel)
Actual value
The meter will now calculate the new USER K FACTOR: This
may take a couple of secs. depending on the complexity of
the correction. The arrow will disappear during this phase,
but the word TOAL will remain unchanged.
If you carry out this action right after point 5 the new USER
K FACTOR will be equal to the FACTORY K FACTOR. It will be
ignored, therefore.
9NONE
When calculation is complete the new USER K FACTOR will
be displayed a few secs. Next, the meter will re-start. Finally,
the meter will be back in default standby mode.
Please note: From now on, the new value set will be
used as the new valid K Factor and will remain even after
replacement of batteries!
10 NONE
The meter stores the new K Factor for operation and is now
ready for serious operation using the newly set USER K
FACTOR.
Set value

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GOperating instructions digital oval gear meter
6.3.4 Changing the K FACTOR directly
This procedure is helpful for the correction of a‚mean error‘ that may be determined by monitoring a
certain number of output operations. In the event you observe a mean percentage error during normal
meter operation you may carry out a correction by changing the valid User K Factor by that percentage. In
order to calculate the correction of the USER K FACTOR, proceed as follows:
New calibration factor = old calibration factor x
Example:
Observed mean percentage error E% -0,9 %
Current K Factor 1.000
New USER K FACTOR 1.000 x 100-(-0,9)÷100=
1.000 x (100+0,9)÷100=
1.009
If the meter displays less than the actual amount of liquid output (negative error), the new K Factor must
be greater than the old one (see example). The opposite is true if the value indicated is greater than the
actual amount (positive error).
ACTION DISPLAY
1 NONE
Meter is in default standby mode, not counting.
2 PRESS TOTAL SEVERAL SECS
Meter changes to cal mode displaying valid K Factor
instead of partial volume.„FAC T“ or „USER“ indicate
whether valid calibration factor is Factory K Factor or User
K Factor.
3 PRESS RESET SEVERAL SECS
Meter shows„TOTAL“ display -> resettable total register
displays zeroes. Meter is now ready for simulated operation
calibration.
4 PRESS RESET SEVERAL SECS
Changing valid K Factor directly: Display shows„Direct“plus
valid K Factor. There‘s an arrow bottom left of display (poin-
ting up or down) indicating the direction of changing USER
K FACTOR (up or down) to carry out actions 5 or 6.
5 PRESS RESET SHORTLY
Direction of arrow ips. This may be repeated as often as
necessary in order to set the correct direction.

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Operating instructions digital oval gear meter G
6 PRESS TOTAL SHORTLY / SEVERAL SECS
Value indicated will change as indicated by arrow:
One increment per each (short) pressing of TOTAL.

continuously if TOTAL is pressed continuously. Display

will‚roll‘ more quickly if button is held permanently.
If you overshoot, go back to point 5 and repeat (5).

7 PRESS RESET SEVERAL SECS
This is how the meter‚knows‘ that calibration is now
complete.
Before you press this button, be absolutely sure the
value indicated is the value you wanted to set.
8 NONE
After the following calculation the new USER K FACTOR will
be displayed a few secs. Next, the meter will re-start. Finally,
the meter will be back in default standby mode.
Please note: From now on, the new value set will be
used as the new valid K Factor and will remain even after
replacement of batteries!
9 NONE
The meter stores the new K Factor for operation and is now
ready for serious operation using the newly set USER K
FACTOR.
7. Conguration of the oval gear meter
The meter has a menu to assist users in the selection of the main unit of measure:
quarters (Qts), pints (Pts), litres (Lit), gallons (Gal).
Combining partial-volume and total-volume units is possible as shown in the following table:
Combination no. Unit
Register of partial volumes
Unit
Register of total volumes
1 litres (L) litres (L)
2 gallons (GAL) gallons (GAL)
3 quarters (QTS) gallons (GAL)
4 pints (PTS) gallons (GAL)
This is how you select any of the combinations proposed:
Wait until the meter is in default standby mode. Simultaneously press CAL and RESET until the display
shows the word„UNIT“ displaying the valid unit being used at present (in our example: litres/litres).

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GOperating instructions digital oval gear meter
Every time you (shortly) press RESET, one of the other combinations of units will be displayed one after the
other (see gs.):
Long pressing of the TOTAL button will result in the new settings being stored and, after completion of the
start cycle, the meter will show delivery in the new measurement units.
Tip
The registers of the resettable and non-resettable totals will automatically switch over to the new
units set.
You do NOT have to re-calibrate after changing the units.
8. Service
This oval gear meter has been designed for minimum maintenance requirements. What remains to be
done from time to time:
Exchange the batteries when discharged.

Clean the measuring chamber. This may be necessary from time to time depending on the specic

liquid(s) being measured and/or when foreign matter gets into the chamber (inlet lter not sucient).
8.1 Exchanging batteries
The meter is supplied complete with two 1.5 V alkaline batteries (1N).
The meter has a two-step low battery indicator:
1) As soon as the batteries dip below the rst charge level the battery icon in the display will light up.
The meter will continue to operate correctly, but the user is informed that the batteries should be
exchanged as soon as possible.
2) If the batteries are not exchanged, the battery will sooner or later reach the second alarm level. Normal
operation is no longer possible. At this state, the battery icon will ash, being the only thing that is still
visible in the display.

19
Operating instructions digital oval gear meter G
Tip
Do not throw batteries in the dustbin. Be sure to know and respect local regulations concerning
proper disposal.
Proceed as follows:
Press RESET in order to update total volume.

Remove the housing lid (82 353).

Remove the old batteries.

Insert new batteries. Observe + and - icons on batteries and cap.

Retighten the housing lid.

The meter will go on automatically and revert to default standby mode. Routine operation may now be

continued.
The values of the resettable and non-resettable totals and partial volume will be the same as before.
Neither will the calibration (K) factor change in the case of power failures and/or exchange of batteries. It is
not necessary to re-calibrate the meter after exchange of batteries.
8.2 Cleaning
Cleaning of the measurement chamber can only be done when the meter is separated from the pipeline or
lling nozzle. Access to the meter inlet and outlet is required.
Tip
Always make sure that ALL the liquid has been removed from the device before you start cleaning
it.
The oval gear meter does not include a lter that requires cleaning. At the inlet and outlet it is possible
to see if large particles have entered the counting mechanism. If foreign objects get into the counting
mechanism, they can be carefully removed with a spiked instrument (for example, a small screwdriver) or
long-nosed pliers.
Caution!
Under no circumstances blow compressed air into the counting mechanism, to avoid damage due
to extremely high rotation of the oval gears!
The counting mechanism can be nally be washed through with a suitable liquid to remove any small
foreign objects. Ideally use diesel or heating oil.
Take care not to damage the body and plastic parts.

20
GOperating instructions digital oval gear meter
9. Troubleshooting
Problem Cause Solution
LCD display: no display Batteries do not contact properly Check batteries for good contact
Accuracy of measurements is
insucient
K FACTOR wrong
Meter operates below admissible
min. ow rate
Check valid K FACTOR.
See section 6.3
Increase ow rate to acceptable
level
Reduced ow rate, no ow at all Oval gear blocked Clean measuring chamber
Display ashing„Err 1“ Data stored in electronic memory
are damaged
Sorry, irreparable
Short displays of„Err 2“ Limited error reading data
(usually when exchanging
batteries)
Control circuit board
automatically switches on and o
to restore proper operation
10. Repairs/service
This oval gear meter has been designed and built in compliance with the highest quality standards.
If a problem should occur despite all quality measures taken, please get in touch with our service
contact partners:
FMT Swiss AG
Tel [phone]
Fax [phone]
[email protected]
11. Manufacturer‘s declaration
We hereby state that the equipment described below, in the model which we have made commercially
available, complies in its design and construction with the applicable requirements. If the equipment is
used other than for its intended purpose, this declaration loses its validity.
Designation of the appliance Oval gear meter
Complies with EU directive 89/336/EEC (EMC directive) and pertinent amendments.
Relevant EU standards EN 61000-6-1
EN 61000-6-3
EN 55014-1-2000
EN 55014-2-97
21.02.2013 FMT Swiss AG
Dipl.-Ing. Rudolf Schlenker