This document describes a fuel flow meter called DFM Marine that provides precise fuel consumption monitoring and machine hours monitoring. It can measure fuel consumption up to 4 cubic meters per hour with 0.5-2% inaccuracy. The meter has brass or duralumin bodies and can connect via threads or flanges. Data like total fuel used, operating hours, and tampering attempts can be displayed and reset. Multiple units can also operate in differential or aggregated modes. The meters can be configured via PC software to adjust settings.

1. Fuel flow meter
DFM Marine
www.jv-technoton.com
Tasks
Areas of application
Model lineup
Exterior
Features
Configuration
Multi-unit operation
Summary

2. 2
Tasks
Fuel flow meter DFM Marine
Fuel consumption monitoring
Machine hours monitoring
Fuel consumption optimization
Fuel misuse and theft detection
Engine testing for fuel consumption

3. 3
Areas of application
Precise tool for fuel consumption measurement of water transport, mining
and quarrying equipment, railroad vehicles; also boilers, big diesel gensets
3
and other mobile and stationary objects with fuel consumption up to 4 m /h.
Fuel flow meter DFM Marine

4. 4
Model lineup/ Specifications
3
Measuring fuel consumption................................. 0.02 to 4 m /hour
Inaccuracy.........................................................0.5-2 %
Nominal bore.....................................................15/20/25 mm
Measuring chamber volume.................................30/75/150 ml
Pipe connection type...........................................thread/flange
External connection thread type...........................G3/4-A, G1-A, G1 1/4-A
Flange holes distance..........65/75/85 mm
Maximum pressure (flange connection)..................25 bar
Maximum pressure (thread connection)................. 16 bar
Body and connection material...............................duralumin/brass
Fuel flow meter DFM Marine

5. 5
Model lineup/ Designation
DFM 4000 C CAN F A
Maximum
consumption, L/h
1000, 2000,
4000
Display
equipment:
–C with display
Output signal type:
CAN – CAN 2.0B interface
Connection to
fuel pipeline:
–F flange
–T thread
Body and
connection
material:
– duraluminA
– brassL
Fuel flow meter DFM Marine

6. 6
Exterior/ Brass body
Measuring chamber of brass
Fuel flow meter DFM Marine

7. 7
Exterior/ Duralumin body
Measuring chamber of brass
Fuel flow meter DFM Marine

8. 8
Features/ Overview
Recording total and average fuel consumption, also in various engine
operation modes: “Idle”, “Optimal”, “Overload”, “Tampering”.
Recording engine operation time, total, average and in various operation
modes: “Idle”, “Optimal”, “Overload”, “Tampering”.
Detecting quantity and duration of fraud attempts (magnet interference),
recording volume of fictive fuel consumption (data tampering).
Keeping Journal of registering Events: “Power on/off”, “Interference” etc.
Built-in battery for recording Counters without external power supply.
Fuel flow meter DFM Marine

9. 9
Features/ Data on screen p.1
Screen
No
Displayed data
Digit capacity Units
Metric
System of
Measures
American
System of
Measures
Metric
System of
Measures
American
System of
Measures
1 Total Fuel Consumption counter 10E-4 10E-2 m³ gal
2 Total Fuel Consumption counter with higher digit
capacity
10E-6 10E-4 m³ gal
3 Engine Operation Time counter 0.1 0.1 h h
4 Engine Operation Time in Idle Mode counter 0.1 0.1 h h
5 Engine Operation Time in Optimal Mode counter 0.1 0.1 h h
6 Engine Operation Time in Overload Mode counter 0.1 0.1 h h
7 Engine Operation Time in Tampering Mode
counter
0.1 0.1 h h
8 Engine Operation Time counter. Resettable 0.1 0.1 h h
9 Total Fuel Consumption counter. Resettable 10E-4 10E-2 m³ gal
10 Total Fuel Consumption counter. Tampering Mode 10E-4 10E-2 m³ gal
11 Interference Time counter 0.1 0.1 h h
Fuel flow meter DFM Marine

10. 10
Features/ Data on screen p.2
Screen
No
Displayed data
Digit capacity Units
Metric
System of
Measures
American
System of
Measures
Metric
System of
Measures
American
System of
Measures
12 Instant Fuel Consumption 10E-2 10E-1 m³/h gal/h
13* Total Differential Fuel Consumption counter 10E-4 10E-2 m³ gal
14* Total Differential Fuel Consumption 10E-2 10E-1 m³/h gal/h
15 Battery Charge in Percentage of the Maximum 1 1 % %
16 Temperature in the Measuring Chamber 1 1 C° F°
17 Firmware Version - - - -
* Only for DFM Marine CCAN.
Fuel flow meter DFM Marine

11. 11
Features/ Showing and resetting data
Magnetic key application zone
Switching between data displays.
Switching on metric/U.S. units system of measurements.
Resetting “Total fuel consumption” resettable Counter.
Fuel flow meter DFM Marine

12. 12
Features/ Differential measurement and
aggregated consumption data
"Slave"
terminal unit
"Master"
Return Supply
Any two pieces of DFM Marine can be configured through Service software to
operate in “Differential” or “Aggregation” modes.
Special selection or mutual calibration of pair of flow meters is not needed.
differential
consumption
consumption in
Return pipeline
"Slave"
terminal unit
Supply 1 Supply 2
consumption in
Supply 1
"Master"
aggregated
consumption
Fuel flow meter DFM Marine

13. 13
Configuration
Precise flow meter configuration:
;< consumption mode boundaries
;< temperature correction coefficient
;< adjustment coefficient
;< two-flowmeter operation mode
.< units of measurement selection
Flow meter
ID
Info and
settings
Service DFM Marine software
Fuel flow meter DFM Marine

14. 14
SPN SPN
SPN
SPN SPN
SPN
Tank Tank
Tank
Genset
Object 1 Object 2
Object 8Object 3-7
Genset
Genset
DUT-E GSM DUT-E CAN
DUT-E CAN
DUT-E CANDFM Marine DFM Marine
DFM Marine
Multi-unit operation
Fuel flow meter DFM Marine

15. 15
Summary
High precision of consumption measurement - inaccuracy just 0,5%.
Fuel consumption and machine hours monitoring - total, average and in
various operation modes: “Idle”, “Optimal”, “Overload”, “Tampering”.
Measuring chamber is made of corrosion-proof material - brass.
Configuration and diagnostics over PC: consumption mode boundaries,
temperature correction on/off, viewing Instant consumption chart and
Event Journal.
Fuel flow meter DFM Marine

16. 16
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Fuel flow meter DFM Marine