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DFM Marine flow meter for heavy machinery

DFM Marine is used in telematics systems (GPS tracking systems) and as an autonomous fuel monitoring solution. DFM Marine is installed in fuel line of the engine / boiler / burner, directly measures fuel consumption and generates an output signal, which is sent to telematics unit (GPS tracker).

DFM Marine is used for monitoring fuel consumption and operating time of engine (fuel consumer), and suitable for:

water transport – sea and river vessels;
locomotives and railway machines;
quarrying and mining machinery;
powerful diesel generators, boilers, burners.
DFM Flow meter for heavy machinery installation

Tasks

Fuel consumption optimization

Fuel misuse and theft detection

Fuel consumption monitoring

Engine testing for fuel consumption

Machine hours monitoring

CO? emissions monitoring

Advantages of DFM Marine

Measuring chamber made of brass

Measuring chamber is made of corrosion-proof and highly durable material – brass.

Different material and fuel line connection type designs

Body and fuel line connections of DFM Marine can be made of duralumin (lighweight and inexpensive) or brass (corrosion-proof and more durable). Fuel line connection types – thread or flange – specified in purchase order.

Operation in differential fuel consumption measurement mode

Any two units of DFM Marine are configured from PC to operate in paired mode, without a need of selecting and calibrating two compatible pieces. Differential fuel consumption measurement mode is used for measuring consumption of fuel in supply and return fuel lines of an engine, if necessary.

Fuel consumption and operating time Counters

Fuel consumption

Instant fuel consumption, m³/h
Total fuel consumption, m³
Total fuel consumption in “Idling” mode of engine operation
Total fuel consumption in “Optimal” mode of engine operation
Total fuel consumption in “Overload” mode of engine operation
Resettable fuel consumption counter
Total CO2 Emission
Hourly CO2 Emission

Engine operating time

Total operating time, h
Total operating time in “Idling” engine operation mode
Total operating time in “Optimal” engine operation mode
Total operating time in “Overload” engine operation mode
Resettable operating time Counter

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
Event alarms: “Power on/off”, “Tampering”, “Interference, etc.
Battery charge

DFM Marine models

The DFM Marine product line includes the following models:

DFM Marine installation and connection

DFM Marine fuel flow meter is installed in fuel line after fine filter:

per “pressure side” scheme, after low-pressure pump
per “suction side” scheme, before low-pressure pump

For more information about the installation process, including installation schemes description, refer to DFM Marine Operational Manual in Document Center.

You can also order training on installation and configuration of DFM Marine.

Specification

Maximum pressure :	25 atm
	16 atm
flange connection :	thread connection
Maximum temperature of working fluid	95°?
	150°?*
Fluid viscosity	1,5 – 6,0 mm2/s (cSt)
Measurement chamber material	brass
Body/connection materials	brass/duralumin**
Inaccuracy rate	see tab “Measurement range and accuracy”
Communications standard	CAN J1939/S6 + NMEA2000 digital interface RS232/485 (protocols: Modbus and DFM COM (extended LLS)) interfaces pulse output
Ingress Protection Rating	IP 54 (IP67*)
* – ?vailable on request ** – specified in the order

Measurement range and accuracy of DFM Marine flow meters

Model (by size)	*Starting flow rate, m³/h**	Minimum flow rate (Qmin), m³/h	Maximum flow rate (Qmax), m³/h	Relative accuracy error, %, not more than***
DFM Marine 1000	0,01	0,02	1	±0,5**
DFM Marine 2000	0,02	0,04	2
DFM Marine 4000	0,04	0,08	4

* Minimum threshold flow rate value when the meter starts operating.
The value is indicated for reference only as accuracy is not standardized for operation
on the starting flow rate.

** In differential/summarization measurement mode, inaccuracy is not higher than ±1.0 %
(depending on the proportion of fuel consumption in chamber of each flow meter used).

***If fuel consumption in the range from Qmin to 3?Qmin, the allowed inaccuracy is not more than ±1.0 %, for differential/summarization fuel consumption modes – not more than ±2.0 %.

Power supply

DFM Marine power supply modes :

Stand-alone power supply (DFM Marine C models) DFM Marine is powered from the built-in lithium-silicon battery. Estimated DFM Marine operation time until full battery discharge is not less than 36 months.
Combined power supply (DFM Marine CK/CCAN models) — DFM Marine is powered from the external power source or built-in battery (in case external power is off). Power supply is switched to stand-alone mode in case of low level of external power supply (less than 8 V). Estimated DFM Marine operation time in this mode is not less than 36 months.

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