FMT Swiss AG 23295 User manual

83 432 A801 GB

Turbine ow meter

GOperating instructions for turbine ow 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 when handling the turbine ow 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 at all?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 simulated operation6.3.2. _________________________________________________13

Meter calibration during simulated operation6.3.3. ____________________________________________13

Changing the K FACTOR directly6.3.4. _______________________________________________________15

Conguration of the turbine ow meter7. _________________________________________________17

Service8. ____________________________________________________________________________18

Exchanging batteries8.1. ________________________________________________________________18

Cleaning8.2. __________________________________________________________________________19

Troubleshooting9. ____________________________________________________________________19

Repairs/service10. _____________________________________________________________________20

Manufacturer‘s declaration11. ___________________________________________________________20

Exploded drawingh12. _________________________________________________________________21

Operating instructions for turbine ow meter G

1. General details

1.1 Intended use

This turbine ow 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 turbine ow meter is intended for installation at the end of an output hose, e.g. a hose reeler.

1.2 Design and functional description

The turbine ow meter is a uid meter with electronic counter & memory and digital display.

The medium owing through the meter sets a turbine in rotation. The revolutions of the gears are

converted into electronic pulses and sent to the electronic counter by a Reed switch. The electronics,

nally, uses a certain multiplication factor 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 ope-

ration: 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 turbine ow meter, far away from and

well insulated against the wet measuring chamber. There is a cover to protect them against the wor-

king environment.

MEASURING CHAMBER

RESET BUTTON

DISPLAY LCD

TOTAL BUTTON

GOperating instructions for turbine ow 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:

that has been delivered since the RESET button was last pressed

Battery charge2.

Display of the calibration mode3.

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 adapted to the direction of ow in 90° steps. To do so, loosen the four screws (item

1). Now you can mount the display unit turned 90°.

Caution!

O-ring (item 10) must be re-mounted correctly.



Do not pinch or excessively twist the cables from the battery compartment (item 11) to the



PCB (item 14).

Then re-insert and tighten the screws (item 1).

1.2.2 User controls

There are two push buttons on the meter (RESET and TOTAL), 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.

Operating instructions for turbine ow meter G

1.2.3 Measuring chamber

The measuring chamber is located in the centre of the meter.

There is a turbine in the measuring chamber, set in rotation by the ow of liquid. Each revolution will

generate an electrical pulse that is processed by the microprocessor on the control 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 of our turbine ow 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 1.5 V standard batteries (N1).

The battery compartment is inside the body. To replace the batteries, you must remove the cover.

1.3 Technical data

Designation 23295

Measuring system Turbine

Accuracy l/pulse 0,017

Flow rate range l/min 10 - 100

Operating pressure bar 40

Burst pressure bar 80

Storage temperature °C -20 to +70

Storage humidity R.H. 95 %

Max. operating temperature °C 60

Flow rate loss at max.

ow (with diesel oil) bar 0,2

Compatible liquids Heating oil, diesel, hydraulic oils

Viscosity range cSt 2 - 2000

Accuracy

(within ow rate range) ±0,5 %

Repeatability 0,2 %

Weight kg 0,39

Threads at

inlet and outlet 1“

Power supply (batteries) V 2 x 1,5

Lifetime of batteries (est.) h 14.000 - 30.000

Table 1-1: Technical data

GOperating instructions for turbine ow meter

2. General safety instructions

2.1 Information on safety at work

The turbine ow 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.

For all uses of this turbine ow meter, local safety and accident prevention regulations apply, as

well as the safety instructions in these operating instructions.

2.2 Signs and symbols used in the safety instructions

Safety instructions are indicated in this manual with the following keywords and pictograms:

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, a further instruction is used which gives general tips for handling the product.

Pictogram Keyword Meaning

Tip Background information and tips on the right way of using the

product

2.3 Safety instructions concerning hazards that may arise in connection with

the turbine ow meter

Caution!

The turbine ow meter has been designed and is suitable for operation with media of low



ammability, exclusively.

Do not operate this turbine ow 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 turbine ow 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.

Operating instructions for turbine ow meter G

4. Installation

The inlet and outlet of the turbine ow 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 turbine ow 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. Solid particles getting

into the measuring chamber might clog up the turbine.

5. Routine operation

The turbine ow 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 action 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 automatically switches between

resettable and absolute total. This has been set at the factory and cannot be inuenced by the user.

RESETTABLE

TOTAL VOLUME

ABSOLUTE

TOTAL 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 turbine ow 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.

A few seconds after output of the liquid this short time span expires and the meter switches to standby

mode. The display of the bottom register shows the absolute total volume.

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

GOperating instructions for turbine ow 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 or TOTAL button 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. when you see the word TOTAL in

the 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 amount (TOTAL).

Operating instructions for turbine ow meter G

5.1.2 Resetting the resettable total volume (RESET TOTAL)

You can reset the resettable total only if you have reset the

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 all segments, press and release the

reset button.

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 in default standby mode (i.e. the display shows only the total volume).



Press TOTAL shortly.



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 NON-resettable) 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.

Accidental pressing of the RESET or TOTAL button does not have any eect in this state.

GOperating instructions for turbine ow meter

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.) and then press RESET 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“:

This is 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 10W30

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: This is 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 at all?

The turbine ow meter comes to you with a calibration factor pre-set at the factory that will guarantee the

most precise measurements under most operating conditions.

If calibration is necessary, it should be conducted under the operating conditions in which the meter is

used, such as in the following extreme 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)



Table of contents

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