Wireless fuel flow meter
DFM S7 and DFM D S7 – hardware tool for direct fuel consumption measurement and monitoring flow of liquids with 1.5 to 6 mm2/s kinematic viscosity, also used for recording engine operation time and fuel/liquid flow time. DFM S7 wireless fuel flow meters are used in vehicle telematics (GPS/ GLONASS vehicle tracking), online monitoring systems of stationary engines, boilers/heaters, and as an stand-alone solution for fuel consumption monitoring.
The flow meters are based on S7 Technology, which ensures wireless data transfer via Bluetooth 4.X (Bluetooth Low Energy) to several devices using BLE-radio. In other words, the flow meters are operated in “advertising” mode – data is sent simultaneously to telematics units and GPS trackers, Bluetooth-displays, smartphones and tablets.
Core features
- operation in BLE-radio mode: data is sent to several Receivers at the same time
- in-built battery – fuel flow sensor works without external power supply
- very low power consumption allows autonomous operation of flowmeter for 5 years
- explosion and fire safety without additional intrinsic safety barrier
- no cables – improved resistance to vandalism or accidental damage
Tasks
Preventing fuel theft
Engine testing for fuel consumption
Machine running time trackingModels of wireless fuel flow meters
Fuel consumption and operating time Counters
- Hourly fuel consumption, L/H
- Total fuel consumption, L
- 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
- Fuel consumption in “Tampering” mode
- Current engine operation mode as per fuel consumption rate
- Fuel temperature
- Battery charge
- 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
- Operating time in “Tampering” mode
- Operating time in “Interference” mode, h
Bluetooth data transfer to telematics unit or tracker
The flow meter continuously transfers information about fuel consumption, engine operating time, engine operation modes, recorded Events using “advertising” (BLE-radio) mode. Data is received using S7 Technology by all devices within the range of the signal of BLE module of the fuel flow meter.
GPS trackers compatible with DFM S7 wireless flow meter
Fuel consumption control via Bluetooth on a smartphone
To receive data from wireless fuel counter using S7 Technology to a smartphone/tablet based on OS Android 5.X and above, Fuel consumption monitor mobile application is used, the functionality of which allows a user to:
- carry out fuel consumption and temperature monitoring
- perform fuel consumption accounting
- record machinery operating time
- monitor engine operating mode based on flow rate
- view real time graph of instant fuel consumption
- monitor flowmeter malfunctions
- check fuel sensor’s battery charge
- monitor hourly consumption and fuel temperature values
- perform operations with flow meter’s configuration profile
Fuel flow meter for ships using NMEA 2000
MasterCAN S7 NMEA data converter continuously receives signals from fuel flow meters DFM S7 using S7 Technology within a radius of up to 50 m. Data on fuel consumption, temperature and consumers operating time are transmitted to the ship’s bus and devices using the NMEA 2000 protocol.
MasterCAN S7 NMEA is certified by the National Marine Electronics Association
DFM S7 part number description for ordering
The designation U is relevant only for single-chamber models.
Models are delivered by special order.
Technical specifications of wireless flow meters
| Max pressure, bar | 25 |
| Interface | Bluetooth 4.X |
| Tx power, dBm | +4 |
| Maximum distance between fuel flowmeter and receiving device, m | 15 m (if there are metal bulkheads at the installation site) 50 m (when installed in line-of-sight) |
| Battery life, years | not less than 5 |
| Operating temperature | ºС -40…+85 |
| Ingress protection rating (IP Сode) | IP54 |
Technical specifications of wireless flow meters
| Max pressure, bar | 25 |
| Interface | Bluetooth 4.X |
| Tx power, dBm | +4 |
| Maximum distance between fuel flowmeter and receiving device, m | 15 m (if there are metal bulkheads at the installation site) 50 m (when installed in line-of-sight) |
| Battery life, years | not less than 5 |
| Operating temperature | ºС -40…+85 |
| Ingress protection rating (IP Сode) | IP54 |
