Technoton DFM Differential-Flow Pulse-Out Meter for Engine Fuel Consumption
PRICES ARE SUBJECT TO AN ADDITIONAL 35% SURCHARGE FOR UK GOV ADDITONAL RATE DUTY ON GOODS FROM RUSSIA OR BELARUS.
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) PDF
