Pointer Type Oval Gear Flow Meter

Oval gear flow meter is one of the typical positive displacement flow meters. Measure the flow of liquid filling the pipeline under a certain pressure.

Features of Pointer Type Oval Gear Flow Meter

• High measurement accuracy: 0.2 and 0.5;
• The mechanism is simple, sturdy and reliable.
• Particularly suitable for measuring medium with high viscosity
• Easy to install. There is no need for straight pipe sections before and after the flowmeter, and there is no need to install straight pipe sections.
• Cast iron oval gear flowmeter, widely used in various oil products and measurement of non-corrosive liquid medium for cast iron
• Cast steel oval gear flow meter for measuring high pressure and low corrosive medium
• Stainless steel oval gear flowmeter, widely used in corrosive liquid media, such as acid, alkali, salt
• In order to prevent the gear of the flowmeter from being jammed by impurities, a filter must be installed upstream of the flowmeter.
• Explosion-proof grade: ExiaIICT6

Specifications of Pointer Type Oval Gear Flow Meter

Diameter(mm)	Flange connection: cast iron, cast steel, SS304, SS316L  DN10~DN200 More than DN200 can be customized
	Threaded connection: cast iron, cast steel, stainless steel DN10~DN50
Connection type	Flange (Default), thread and clamp(Need to customize)
Medium viscosity	0~200mPa.s(Normal type), 200~2000mPa.s(High-viscosity type), 2000~5000mPa.s(Need to customize)
Accuracy level	±0.5%R  (±0.2%R Need to customize)
Ratio of measuring range	1:5;1:10
Instrument material	Body: cast iron, cast steel, stainless steel             Gear: cast iron, stainless steel
Flowmeter jacket	None(Default), flowmeter with jacket(Suitable to maintain the temperature of the medium, Need to customize)
Temperature level	Environment temperature:-20ºC~+60ºC; Relative humidity:5%~90%. Medium temperature:-20ºC~+80ºC(Normal type);  High-temperature LCD type:+100~150ºC (need to be customized) High-temperature mechanical pointer type:+100ºC~+200ºC(need to be customized)
Pressure level	Cast iron:1.6MPa,  Cast steel and Stainless steel:1.6MPa(default), 2.5MPa,4.0MPa, 6.3MPa (Can be customized according to different diameter)
Working power supply	No power supply required(Mechanical pointer type, no signal output), External power supply: 12/24VDC ±15%,(suitable for 4~20mA; Pulse, RS485, LCD display)
Signal output	None, Pulse,4~20mA, RS485
Display	Mechanical pointer display, LCD display, No display only pulse signal output
Electrical interface	Aviation plug
Protection level	IP65
Explosion-proof level	ExdIIBT4

Name	Model	The material of the body	Gear materials
Cast Iron	LC-A	Cast iron	Cast iron
Cast Steel	LC-E	Cast steel	Cast iron
Cast Light	LC-QA	Cast iron	Aluminum alloy
Cast iron high temperature type	LC-TA	Cast iron	Cast iron
Cast steel high temperature type	LC-TE	Cast steel	Cast iron
Cast steel high viscosity type	LC-NA	Cast iron	Cast iron
Cast steel high viscosity type	LC-NE	Cast steel	Cast iron
Stainless steel	LC-B	Stainless steel	Stainless steel
Food stainless steel	SPB	Stainless steel	Stainless steel
13 Type	LC-13	Various materials	Various materials

Extended reading: Stainless steel flow meters|304-316 optional

Oval Gear Flow Meter Flow Range

Nominal Diameter (mm)	Flow   range(m3/h)
	Viscosity
	0.6~2mPa·s	2~8mPa·s	8~200mPa·s	Chemical liquids 0.6-200mpa.s
10		0.08~0.4	0.04~0.4	0.08~0.4
15		0.3~1.5	0.15~1.5	0.3~1.5
20	0.75~3	0.4~3	0.3~3	0.6~3
25	1.5~6	0.8~6	0.6~6	1.2~6
40	3~15	2~15	1.5~15	2.4~12
50	4.8~24	3~24	2.4~24	3.8~19
65	8~40	5~40	4~40	8~30
80	12~60	8~60	6~60
100	20~100	13~100	10~100
150	38~190	25~190	19~190
200	68~340	45~340	34~340

Note: Diameter and flow flange of Oval meters for class0.5

Read more about: what is gpm;

Nominal Diameter (mm)	Flow   range(m3/h)
	Viscosity
	0.3~0.8mPa·s	0.8~2mPa·s	2~8mPa·s	8~200mpa.s
10	0.2~0.4	0.15~1.5	0.1~0.5	0.08~0.5
15	0.75~1.5	0.65~1.5	0.3~1.5	0.25~1.5
20	1.5~3	1~3	0.6~3	0.5~3
25	3~6	2~6	1.2~6	1~6
40	7.5~15	5~15	3~15	2.5~15
50	12~24	8~24	4.8~24	4~24
65	20~40	15~40	8~40	6.5~40
80	30~60	20~60	12~60	10~60
100	50~100	34~100	20~100	16~100
150	95~190	64~190	38~190	32~190
200	170~340	180~340	68~340	56~340

Note: Diameter and flow flange of Oval meters for class0.2

Extended reading: Cylinder Gear flow meter for micro flow measurement.

Pointer Type Oval Gear Flow Meter Applications

LC series oval gear flowmeter is equipped with on-site pointer display and word wheel cumulative counting device, which can directly display the cumulative flow of liquid flowing through the pipeline. For different liquids (acid, alkali, salt, organic solution, etc.), the flowmeter can be made of different materials (cast iron, cast steel, stainless steel, etc.). It is suitable for flow measurement in industrial sectors such as petroleum, chemical industry, transportation, commerce, food, medicine and health.

• The LC-A cast iron oval gear flowmeter is widely used in the measurement of various oil products and non-corrosive liquid media on cast iron.
• The LC-E cast steel oval gear flowmeter is used for the measurement of high pressure and low corrosive media.
• The LC-Q cast iron oval gear flowmeter, whose rotor is made of aluminum, is suitable for the measurement of low-viscosity, low-corrosion (such as gasoline, etc.) media.
• The LC-B stainless steel oval gear flowmeter is widely used in the measurement of liquid media with strong corrosive liquids, such as acids, alkalis, salts and organic compounds.
• The LC-L aluminum alloy oval gear flowmeter is a light super flowmeter, which is widely used in the measurement of low corrosive liquid media, such as water and other liquids.

Structure and working principle of Oval Gear Flow Meter

The oval gear flowmeter is composed of a metering box and a pair of elliptical gears installed in the metering box, and the upper and lower cover plates form a sealed crescent-shaped cavity (due to the rotation of the gear, it is not sealed) as the calculation unit of a displacement .

The flow meter is mainly composed of a housing, a counter, an elliptical gear, and a coupling (magnetic coupling and axial coupling), etc. As shown in the figure.

1.Counter 2. Transmitter

3. Accuracy adjuster (used above DN50)

4. Sealed coupling

5. Front cover 6. Cover plate

7. Oval gear 8. Shell

9. Rear cover

When the measured liquid enters the flowmeter through the pipeline, the pressure difference generated at the inlet and outlet pushes a pair of gears to continuously rotate, and the liquid measured by the crescent-shaped cavity is continuously transported to the outlet. The product of four times the secondary displacement is the total amount of the measured liquid flow.

The elliptical gear generates a torque to make it rotate under the action of the pressure difference △p of the measured medium.

The rotor 1 and the rotor 2 are alternately driven by one to rotate the other. There are two magnets on each rotor as signal generating elements. There is a magnetic signal detecting element at the center of the two axes at the bottom of the cavity. Whenever the magnet turns to the detecting element, the sensor counts as a pulse.

Each pulse corresponds to a certain amount of medium discharge F, F=XXml/p, so the volume flow Qm per unit time can be obtained: Qm=F*H, F is the amount of medium removed by each pulse; H pulse per unit time number.

Read more about Mass Flow Rate vs Volumetric Flow Rate

Oval gear flow meter price

Sino-Inst is a manufacturer of oval gear flow meters. We try our best to provide customers with high-quality flow meters.
The price of elliptical flowmeter is relatively moderate.
If you need a quote for oval gear flow meters. Please contact our sales engineer.
To confirm the price of elliptical flowmeter, the following information needs to be confirmed:

1. Name, model, specification, material.
2. Medium temperature, pressure, flow range.
3. Medium viscosity or name
4. Are there any special requirements, such as explosion-proof.

The following is the reference price of one of our oval gear flow meters:
LC-A100.2/Z
Cast iron material. DN100 national standard flange connection. Temperature: -20-80℃. Pressure: 1.6mpa. Measuring medium: diesel. Flow range: 15-100m3/h. Accuracy: 0.5%. The on-site pointer shows the cumulative flow, with zero return function. FOB price: USD 800-900.00

More Liquid Flow Meters:

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Sino-Inst, Manufacuturer for Oval Gear Flow Meters. For example: crude oil flowmeter, diesel flowmeter, gasoline flowmeter.

Sino-Inst’s Oval Gear Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.