Fuel Meter
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P a g e
flowtech-instruments.com
1.
Introduction
OMFF/OFS Series aluminium oval gear flow meter has the ability to handle a wide range of fluid viscosities with
exceptional levels of repeatability and durability, applying in the petroleum, chemical, food industry, etc.
It is also applicable in Diesel, Kerosene and Petrol fluid usage industries
Flowtech provides Fuel Flow Meter from FMIPL-OFMM-025 to 50 Positive Displacement Fuel Meter. The Diesel
Flow Meter FMIPL-OFMM-025 to 50 has also incorporated the oval rotor principal into its design.
This has proven to be a highly reliable and highly accurate method of measuring flow, providing exceptional
repeatability and high accuracy. The low pressure drop through the meter makes the meter ideally suited for use
in gravity applications or with the Diesel Flow Meter & Digital Diesel Flow Meter range of electric fuel pumps.
2.
Technical Specification
Model
OFMM-025
OFS-025
OFMM-040
OFS-040
OFMM-050
OFS-050
Size
25MM
40MM
50MM
Min Flow (LPM)
12 L/Min
25 L/Min
30 L/Min
Max Flow (LPM)
120 L/Min
250 L/Min
300 L/Min
Accuracy
+/- 0.5%
+/- 0.5%
+/- 0.5%
Repeatability
0.03%
0.03%
0.03%
Max Viscosity
1000 CPS
1000 CPS
1000 CPS
Best Working Pressure
0.3 Mpa
0.3 Mpa
0.3 Mpa
3.
Operating Principle
The oval gear flow meter comprises oval-shaped, geared rotors which
rotate within a housing of specified geometry as shown in the diagram
below. One of the rotors is fitted with a gearing pinion which (through
a secondary gearing set) transfers the rotation of the rotor to the
Mechanical Register.
Fluid differential pressure
causes the intermeshing gears to rotate, trapping a 'pocket' of
fluid between the gear and the outer housing and subsequently emptying the fluid pocket into the downstream
flow.
The measurement part of oval gear flow meter is
posed by two elliptical gears mesh with each
other and its shell (measuring room).
The flow meter works by two elliptical gears to
mesh with each other, its working process are as
follows: P1 in the figure shows the pressure of
