Eurosens Direct PN


Fuel flowmeters of Direct serie are used  for fuel consumption measurement in range between 1-500 liters/hour.  Direct serie have many modifications, you can choose model at PRODUCT SPEC tab.

 

Note:

Most diesel engines have fuel supply system with fuel supply line and fuel return line. To know engine fuel consumption you need to measure both fuel flows with Delta flowmeter, or change fuel supply system for Direct flow meter application.

Fuel consumption monitoring 

 

    • High-precision measurement
    • High corrosion resistance
    • Strong electronic circuit protection
    • Sealed automobile connector on sensor body
    • Indication lights provide easy understanding state of device

Fuel flow meters Direct are made from hard aluminium alloy, measuring chambers have antifriction coating, in both measuring chambers fuel temperature sensor is installed. Each manufactured flowmeter is pre-calibrated for differential application. Thereby Delta flow meters can provide accurate results in any mode of engine operation.

Unlike some other manufacturers, Direct flow meter warranty is not limited by passed flow. 3 year without flow limitations.

Fuel flow meters Direct
Fuel flow meters Direct CAN
Direct PN I counters list
Direct PN counter modes
Fuel flow meters from Mechatronics
Certificate of Customs Union Technical Regulations 018/2011
EMC declaration – Customs Union Technical Regulations 020/2011

 

Connecting thread M14x1, 5
Max pressure 2.5 MPa
Power voltage, V 10 – 50
Reverse polarity protection Yes
Measuring accuracy ±1%
Temperature range,°C -40 – +85
Maximum flow rate in l/h 500
Output interface pulses, RS232, RS485, K-Line, CAN
Seal rating IP 67

Digit index means maximum fuel rate in each measuring chamber. It is a main parameter to choose suitable flow meter.

Simpliest version of flow meter has P index. Due to high quality of measuring chambers P-serie provide enough precision even without microcontroller circuit.

Flow meter modification Q start

liters/hour

Q min

liters/hour

Q nom

liters/hour

Q max

liters/hour

pulses/liter Error of measurement
Direct P100 0,5 2 50 100 196…204 ± 2%
Direct P250 0,5 5 125 250 96…102 ± 2%
Direct P500 1,0 10 250 500 48…52 ± 2%

Q start  – flow rate when fuel meter starts to measure

Q min , Q max – Min and Max flow rate for range with declared precision

In Direct PH flow meters Hall-sensors are used instead of reed switch. That provide protection from external magnetic field.

Direct PH100 0,5 2 50 100 196…204 ± 2%
Direct PH250 0,5 5 125 250 96…102 ± 2%
Direct PH500 1,0 10 250 500 48…52 ± 2%

PN – fuel flow meter has powerful STM32 processor inside. PN flowmeters have some advantages over P-serie:
1. Calibration table is not used for compromised coefficient calculation but recorded in non-volatile memory of flow meter. And calibration coefficients are applied in real-time. So, PN-flow meter always have same weight of pulse (normalized output).
Also precision of measurement is better (1% error instead of 2%).
2. Instead of reed switches – Hall effect sensors are used.
3. Sensor can detect external intervention in operation and store this fact in memory
4. PN meter can provide not only fuel consumption but some other parameters : operation time of diesel, fuel consumption in different operation modes (idle, normal load, overload, external intervention) and time of operation in these modes. This information is available via RS232/RS485 interface  – Direct PN(RS), or via K-line in Direct PN.
5. Temperature sensor and temperature compensation.
6. No need in check valve, because of smart processing of fuel vibration and software flow direction autodetection.

 

Direct PN100 0,5 1 50 100 200 ± 1%
Direct PN250 0,5 2 125 250 100 ± 1%
Direct PN500 1,0 5 250 500 50 ± 1%

Flow meters with improved precision have extra index .05

Direct PN100.05 0,5 1 50 100 200 ± 0.5%
Direct PN250.05 0,5 2 125 250 100 ± 0,5%
Direct PN500.05 1,0 5 250 500 50 ± 0.5%

Fuel meters  can have built-in display. It is marked by index I.

Direct PN I counters list
Direct PN100I 0,5 1 50 100 200 ± 1%
Direct PN250I 0,5 2 125 250 100 ± 1%
Direct PN500I 1,0 5 250 500 50 ± 1%

Flow meters with display and improved precision

Direct PN100.05I 0,5 1 50 100 200 ± 0.5%
Direct PN250.05I 0,5 2 125 250 100 ± 0,5%
Direct PN500.05I 1,0 5 250 500 50 ± 0.5%

We have a modification with only index I with build-in display. These meters have external supply, but don’t have pulse output or any other interface. It is stand-alone fuel counter with display, built-in microcontroller and Hall-sensors.

Direct 100I 0,5 1 50 100 200 ± 1%
Direct 250I 0,5 2 125 250 100 ± 1%
Direct 500I 1,0 5 250 500 50 ± 1%

Flow meter modification with display without pulse output but with built-in longlife power battery  have index A. It is stand-alone autonomous fuel counter. For power economy reed switches are used  instead of Hall sensors. Due to low power consumption these meters can operate 3 years without battery replacement.

Direct A100I 0,5 1 50 100 200 ± 2%
Direct A250I 0,5 2 125 250 100 ± 2%
Direct A500I 1,0 5 250 500 50 ± 2%

Flow meter modifications with build-in battery, display, pulse output and external power.  Hall-sensors and STM32 microcontroller are used.

Direct PN A100I 0,5 1 50 100 200 ± 1%
Direct PN A250I 0,5 2 125 250 100 ± 1%
Direct PN A500I 1,0 5 250 500 50 ± 1%

Every version of fuel meter can be manufactured in copper version

Direct RS – Fuel flow meters with serial RS232 and RS485 onboard. Communication is performed via “Delta RS” protocol or MODBUS.

Direct RS 100 0,5 1 50 100 None ± 1%
Direct RS 250 0,5 2 125 250 None ± 1%
Direct RS 500 1,0 5 250 500 None ± 1%

And version with display

Direct RS 100I 0,5 1 50 100 None ± 1%
Direct RS 250I 0,5 2 125 250 None ± 1%
Direct RS 500I 1,0 5 250 500 None ± 1%

 

Direct CAN – fuel flow meters with a CAN bus interface. Standard protocol SAE J1939 is supported.

Direct CAN 100 0,5 1 50 100 None ± 1%
Direct CAN 250 0,5 2 125 250 None ± 1%
Direct CAN 500 1,0 5 250 500 None ± 1%

And version with display

Direct CAN 100I 0,5 1 50 100 None ± 1%
Direct CAN 250I 0,5 2 125 250 None ± 1%
Direct CAN 500I 1,0 5 250 500 None ± 1%

 

 

Eurosens Delta advantages for installers:

  • Special free diagnostic software
  • Software function of flow direction reverse
  • Smart software processing of fuel flow pulses allows to avoid use of check valves. It mimimize hydraulic resistance of system and very important factor.
  • High quality of measuring chambers
  • Warranty term – 3 years, without limitation of passed flow.
  • You can use specially designed Deaerator device to remove air from fuel system.
Direct, Delta installation manual
Eurosens flow meters User Manual
Eurosens Direct PN  firmware v.2.1 
Eurosens Direct RS firmware v.1.2
Direct P passport
Direct PN A I passport
Direct I passport
Direct A I passport
Direct CAN passport

For developers : Eurosens Direct 3D CAD drawings

Eurosens Direct IGS file
Eurosens Direct STEP file

 

 

 

Use

Eurosens Cable

Eurosens Cable