Differential Fuel Flow Meter

The differential fuel flow meter measures diesel fuel consumption in vehicle tanks and stationary units.  Called model DFM D.  Firstly, it determines consumption measurement of diesel fuel and heating oil.  It also operates with other liquid fuels and mineral oils with kinematic viscosity of 1.5 to 6mm²/s.   Secondly, the DFM D is part of the tracking system, telematics system or as an autonomous solution for diesel fuel consumption monitoring.

This product is for modern engines.  Such as common rail or pump injector fuel systems of vehicles and stationary units.

Exciting features of this fuel flow meter includes:

• Contains two measuring chambers for supply and return fuel lines
• Flow meter calculates the difference between the two lines
• Result is recorded in the counter
• Values on Counters are sent to Telematics Unit as digital messages (RS232, RS485 or CAN Output)
• Internal Battery and sends data to on board monitoring once power is restored
• Signal cable resistant to breaks and weather changes
• Replaceable Mud Filter installed in the inlet of the DFM D

 

Fuel Consumption and Operating Time Counters

Fuel Consumption

• Instant Fuel Consumption
• “Forward” Line hourly fuel consumption
• Hourly Fuel Consumption in “Return” Line
• Total Fuel Consumption in Litres, Idling, Optimal Mode, Overload Mode, Negative Mode

 

Engine operating time

• Total operating time, hours, idling, optimal, overload, negative engine operation mode
• Supply Chamber total operating time
• Total operating time of Return chamber
• Operating time of Supply and Return chambers in each mode of engine operation

 

Special

• Engine operating time in “Tampering” mode, h
• Engine operating time in “Interference” mode, h
• Current engine operation mode as per fuel consumption rate
• Fuel temperature
• Temperature correction status
• Correction coefficient value
• Battery charge

 

 

DFM D Types

DFM CD Differential (two chamber) fuel counter	Differential Fuel Flow Meter with output signal cable DFM D

 

For more information or pricing, contact us.

Specifications

Connecting Thread	M14 x 1.5
Nominal Pressure	2 bar
MAX Pressure	25 bar
Supply Voltage	10-45 V
Over Voltage	<100 V
Current Consumption ma (12V/24V)	25/50 mA
Operating Temperature (without/with display)	-40°+85° -20°+60°
Ingress Protection Rating	IP54
Relative accuracy error per chamber	Not more than 1%

 

DFM modifications

Following DFM types are available:

• fuel flow meters with display, one-chamber or differential);
• fuel flow meters without display, one-chamber or differential).

Model	Chambers Volume mL	Min Flow Rate in each chamber, litres/hr	Max Flow Rate in each chamber, litres/hr
DFM 100	5	10	100
DFM 250	12	50	250
DFM 500	20	100	500