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Technoton DFM Differential-Flow Pulse-Out Meter for Engine Fuel Consumption
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Technoton DFM Differential-Flow Pulse-Out Meter for Engine Fuel Consumption

Excellent quality, Engine Fuel Consumption DIFFERENTIAL Meters, for monitoring engine fuel usage by measuring the ingoing fuel, and deducting the fuel being returned to the tank from the injector pump, particularly useful on diesel vehicles where return fuel lines are common

Suitable for all fuel oils, providing the fuel is clean, can be used with;

  • Diesel
  • Petrol
  • Kerosene
  • Heating Oil
  • Other Petroleum Deriviates
  • Biodiesel
  • Vegetable Oil
  • Fuel Blends
  • Fuel Substitutes

4 Different types of signal output (denoted by suffix):

  • P - Pulse - Not Normalised
  • K - Pulse - Normalised
  • 232 - Serial - RS-232 (Can also be set to work according to MODBUS RTU Protocol)
  • 485 - Serial - RS-485 (Can also be set to work according to MODBUS RTU Protocol)
  • CAN - CAN 2.0B Interface

OPTIONAL FITTING KIT: An adaptor kit is available which has fittings to enable connection to 3/8"BSP Male, 3/8"BSP Female, 10mm Tube Compression, and 3/8" (9.53mm) Hose Barb (All in the one kit)

3 Models available to suit various engine fuel consumption rates. Referring to your vehicle manual should give some indication as to the likely flow range required

Meters Available
  Flow Range Starting Flow Connection Thread Accuracy within flow range Pulses Per Litre Type of Output
DFM 100D K 10 - 100 LPH 0.5 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 200 Pulse, Normalised
DFM 100D 232 10 - 100 LPH 0.5 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 200 RS-232
DFM 100D 485 10 - 100 LPH 0.5 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 200 RS-485
DFM 100D CAN 10 - 100 LPH 0.5 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 200 CAN 2.0B Interface
DFM 250D K 50 - 250 LPH 2.0 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 80 Pulse, Normalised
DFM 250D 232 50 - 250 LPH 2.0 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 80 RS-232
DFM 250D 485 50 - 250 LPH 2.0 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 80 RS-485
DFM 250D CAN 50 - 250 LPH 2.0 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 80 CAN 2.0B Interface
DFM 250 HP D K 50 - 300 LPH 2.0 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 80 Pulse, Normalised
DFM 250 HP D 232 50 - 300 LPH 2.0 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 80 RS-232
DFM 250 HP D 485 50 - 300 LPH 2.0 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 80 RS-485
DFM 250 HP D CAN 50 - 300 LPH 2.0 LPH M14x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 80 CAN 2.0B Interface
DFM 500D K 100 - 500 LPH 5.0 LPH M16x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 50 Pulse, Normalised
DFM 500D 232 100 - 500 LPH 5.0 LPH M16x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 50 RS-232
DFM 500D 485 100 - 500 LPH 5.0 LPH M16x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 50 RS-485
DFM 500D CAN 100 - 500 LPH 5.0 LPH M16x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 50 CAN 2.0B Interface
DFM 500 HP D K 100 - 600 LPH 5.0 LPH M16x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 50 Pulse, Normalised
DFM 500 HP D 232 100 - 600 LPH 5.0 LPH M16x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 50 RS-232
DFM 500 HP D 485 100 - 600 LPH 5.0 LPH M16x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 50 RS-485
DFM 500 HP D CAN 100 - 600 LPH 5.0 LPH M16x1.5 ±1-3% (Depends on ratio of forward to reverse flow) 50 CAN 2.0B Interface
Meter Specification
Operating Temperatures -40 to +80 °c
Voltage 10-50 vDC
IP Rating IP 54
Electrical Connection 15cm lead with plug on DFM meter + 7.5m lead wth plug on one end and bare wires at other to connect to DFMi counter
Output Signal Various, See Above
Min / Max Kinematic Viscosity 1.5-6.0 mm2/Sec / Centistokes
Nominal / Max Pressure 2 to 25 Bar
Max Particle Tolerance 80 Micron
Fitting Size Consult Chart Below
Pulse Type Consult Chart Below
Electronic Display Specification
Model Number DFM i
Operating Temperatures -40 to +60 °c
Voltage 10-50 vDC, Protected up to 100v
Current Consumption 50ma @ 12vDC, 25ma @ 24vDC
IP Rating IP 54
Electrical Connection Bare wires to connect to bare wires of DFM meter extension cable + Power supply
Output Signal None
Dimensions 75mm x 60mm x 30mm
Weight Max 0.3kg

Shown Below, Installation Diagram, Meter Fitted Before Pump (Less Accurate)

Shown Below, Installation Diagram, Meter After Pump (More Accurate)

Shown Below, Optional Fitting Kit. Each DFM Fitting kit contains 4 of EACH item shown below:

Download Technoton DFM Operation Manual (All Models) PDFDownload Technoton DFM Operation Manual (All Models) PDF

Product Options

£374.60


Product Code DFMW3RAZ539
Condition New

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