^* Corresponds to the model number
** Not available on separate readout units

Each screen can be set by applying the selector magnet to the screen of the meter (more information)

The pulse specifications for using our (models A-K, D and C-K) fuel flow meters with a remote readout unit are specified below.

Model	Timp min	Timp max	Scaled pulse
DFM-50	360 ms	18000 ms	5 ml/pulse
DFM-100	180 ms	9000 ms	5 ml/pulse
DFM-100D	200 ms	36000 ms	5 ml/pulse
DFM-250	180 ms	9000 ms	12.5 ml/pulse
DFM-250D	200 ms	90000 ms	12.5 ml/pulse
DFM-500	144 ms	7200 ms	20 ml/pulse
DFM-500D	180 ms	144000 ms	20 ml/pulse

U_high= U _supply (U_battery)

U_low= 0.7V

t_low= 80 ms

Example: 
if one takes the model DFM-250, the highest flow is 60 seconds x 60 minutes / 180 ms = 20.000 pulses per hour = 250 l/h

Q_nom = nominal fuel flow (see product page for the right value for your instrument)

^* Corresponds to the model number

You should choose a fuel flow meter for vehicles with a modern engine EURO 3/4/5.

The estimated duration of battery life is at least 24 months.

As long as fuel flows through the fuel flow meter, the counter will count.

It is recommended to seal pipe connections on the output of the fuel flow meter. If you control seals condition deceiving FUEL-VIEW will be impossible.

It is not necessary to drain the fuel in front of the fuel flow meter,  because this volume of fuel is not considered. That’s why you have to seal all the joints of fuel line after the FUEL-VIEW:  the fuel flow meter output, the return valve, input to a high pressure fuel pump and its cap. Besides, usually it is necessary to seal the bleed valve on tractors, on YAMZ or KAMAZ engines;  it concerns the feeding tubes of the electrotorch prestarting preheater.

For proper operation make sure that the feed line and return line (if applicable) are connected correctly and that the flow rates are within the specifications of the instrument. In case of a set up including a display please make sure that you only use the magnetic key which comes with the instrument.

This video shows how to install a fuel flow meter (FUEL-VIEW) on a vehicle.

The DFM AK, CK or D versions give a pulse signal. If there is no pulse output:

1) check if a correct connection is made to the recording and display device. See brochure or manual for the right connection scheme)

2) check if the fuel filter is the problem, remove and clean the fuel filter

This is because the meter is in power save (standby) mode. All fuel flow meter models with display stay in standby mode unless you ‘wake’ the meter with the selector magnet.
Also switching between ‘screens’  is carried out through applying the selector magnet to the surface of the meter.

Sleep / standy mode

Selector magnet

It is not possible to reset the counter values of the FUEL-VIEW DFM B, C or C-K models.

Fuel flow meters can measure the following fluids:

• Diesel fuel

• Mineral oil

• Other types of liquids with kinematic viscosity from 1.5 to 6 cSt (mm2/sec)

• LPG is unfortunately NOT possible