Mechatronics Eurosens Delta Fuel Flow Meters

Eurosens Delta Fuel Flow Meters 

Differential fuel flowmeter Eurosens Delta is used to measure the fuel consumption of diesel engines. Most engines have supply and return lines. To obtain the fuel consumption of the engine it is necessary to measure both fuel flows and calculate the difference. This task looks not easy but with Eurosens Delta you can receive accurate results immediately after the installation without any calibration.

Advantages :

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

In what cases a differential fuel flowmeter is the best choice for fuel consumption monitoring  – you can read there. Of course, Delta flow meters can be used in other applications too. In comparison with fuel level sensors, fuel flowmeters are much better in the credibility of the results, which are independent of fuel composition, tank form, and operating conditions.

It is very a important issue – the fuel monitoring system must be accurate and trustworthy otherwise it is useless. Delta flow meters have a wide list of modifications, you can see them in the SPECIFICATION tab. Eurosens Delta advantages for installers

• Special free diagnostic software
• Software function of flow direction reverse
• Smart software processing of fuel flow pulses allows for to avoidance use of check valves.
  It minimizes the hydraulic resistance of the system and very important factor.
• High-quality measuring chambers
• Warranty term – 3 years, without limitation of passed flow.
• You can use a specially designed Deaerator device to remove air from the fuel system.

Note: Differential method of measurement does high demands to flow meter precision. It is because flow rates in supply and return lines usually are much bigger than engine fuel consumption. For example, for a John Deere tractor, at idling in fuel supply line – 200 liters/hour, in return line – 197 liters/hour. Engine consumption – 3 liters/hour. That means that for adequate results at idling, we need to measure both fuels flows with a precision of no more than 0.3%.

Moreover, the temperature expansion of fuel (0.7% per every 10 Celsius degree) adds extra error to differential measurement, because the temperature of fuel coming to the engine and returning to the tank is different. That means you can’t use the idea of 2 separate flowmeters without good precision and temperature correction.

Fuel flow meters Delta are made from hard aluminum alloy, measuring chambers have an antifriction coating, in both measuring chambers fuel temperature sensor is installed. Each manufactured flowmeter is pre-calibrated for differential application.

Thereby Delta flowmeters can provide accurate results in any mode of engine operation. Unlike some other manufacturers, Delta flowmeter warranty is not limited to bypassed flow. 3 years without flow limitations.

Specifications :

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

• • • * In each of the measuring chamber

The digit index means the maximum fuel rate in each measuring chamber. It is a main parameter to choose a suitable flow meter. Note: engine fuel consumption – it is only part of the fuel rate in supply and return fuel flow.

Flow meter model	Q start, liters/hour	Q min, liters/hour	Q nom, liters/hour	Q max, liters/hour	Pulses per liter	Error*
Delta PN 100	0,5	1	50	100	200	± 1.2%
Delta PN 250	0,5	2	125	250	100	± 1.2%
Delta PN 500	1,0	5	250	500	50	± 1.5%
Delta PN 100 I	0,5	1	50	100	200	± 1.2%
Delta PN 250 I	0,5	2	125	250	100	± 1.2%
Delta PN 500 I	1,0	5	250	500	50	± 1.5%
Delta PN A 100 I	0,5	1	50	100	200	± 1.2%
Delta PN A 250 I	0,5	2	125	250	100	± 1.2%
Delta PN A 500 I	1,0	5	250	500	50	± 1.5%
Delta RS 100	0,5	1	50	100	200	± 1.2%
Delta RS 250	0,5	2	125	250	100	± 1.2%
Delta RS 500	1,0	5	250	500	50	± 1.5%
Delta RS 100 I	0,5	1	50	100	200	± 1.2%
Delta RS 250 I	0,5	2	125	250	100	± 1.2%
Delta RS 500 I	1,0	5	250	500	50	± 1.5%
Delta CAN 100	0,5	1	50	100	200	± 1.2%
Delta CAN 250	0,5	2	125	250	100	± 1.2%
Delta CAN 500	1,0	5	250	500	50	± 1.5%
Delta CAN 100 I	0,5	1	50	100	200	± 1.2%
Delta CAN 250 I	0,5	2	125	250	100	± 1.2%
Delta CAN 500 I	1,0	5	250	500	50	± 1.5%

Q start  – flow rate when fuel meter starts to measure Q min, Q max – Min and Max flow rate for range with declared precision РN – Pulse output RS – Serial interfaces RS-232/RS-485 CAN – CAN bus interface SAE J1939 I – build-in LED display, 9-digit А – built-in long-life battery

* Error calculated for fuel supply/consumption values (Liters/hour):
Serie 100 – 45/10
Series 250 – 90/20
Series 500 – 160/30.

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