1.Product Introduction

Oval gear flow meter is a volumetric meter for continuous or intermittent measurement and control of liquid flow in a pipeline. It has many advantages, such as large range, high accuracy, small pressure loss, strong viscosity adaptability, measurement of high temperature and high viscosity liquid, convenient calibration, installation suggestion and so on. It is suitable for flow measurement in petroleum, chemical, chemical fiber, transportation, commerce, food, medicine and health departments. LC series oval gear flow meter is equipped with a pointer and printing wheel accumulation device, and can directly display the liquid accumulation flow through the pipeline on the spot. The accumulative, quantitative and instantaneous flow remote transmission control can be realized by attaching the transmitter and the electric display instrument to the counting mechanism. High temperature and high viscosity liquid can be measured by adding radiator or ellipsoid undertooth. The flowmeter for different liquids (acids, bases, salts, organic solutions, etc.) can be made of different materials.

2.Working Principles

The metering chamber has a crescent cavity composed by a pair of oval gear and cover plate as the metering unit of flow. The oval gear is rotated by the pressure difference between the inlet and outlet of the flowmeter so that the liquid is continuously measured by the crescent cavity and sent to the outlet. The liquid that flows every turn is four times of the crescent cavity. By sealing coupling, the total number of turns of oval gear and the speed of rotation are sent to the counting mechanism or transmitter. Thus, we can know the total amount of liquid and instantaneous flow through the pipeline.

3.Technical Parameter

Material	Cast Iron	Cast steel	Stainless Steel
Pressure	1.6MPa	1.6/2.5/4.0/6.3MPa	1.6/2.5/4.0/6.3MPa
Temperature	Conventional pointer type: -20~+80； High-temperature pointer type: -20~+200； Conventional LCD type: -20~+60； High-temperature LCD type: -20~+150；
Application	High temperature and high viscosity liquid
Diameter	DN10-DN200 mm
Accuracy	0.5% or 0.2% (customized)
Connection	Flange
Flange	Standard: DIN (GB) Or Customized (JIS or ANSI)

4.Flow range

Diameter	Viscosity: 0.6—2mPa.	Viscosity: 2—200mPa.	Viscosity: 200—1000mPa.	Viscosity: 1000-2000mPa.s
DN10	0.2-0.4 m3/h	0.08-0.4 m3/h	0.04-0.3 m3/h	0.03-0.2 m3/h
DN15	0.6-1.5 m3/h	0.3-1.5 m3/h	0.2-1.0 m3/h	0.1-0.7 m3/h
DN20	0.8-3 m3/h	0.6-3 m3/h	0.4-2.1 m3/h	0.25-1.5 m3/h
DN25	1.2-6 m3/h	0.8-6 m3/h	0.6-4.2 m3/h	0.6-3 m3/h
DN40	5-15 m3/h	3-15 m3/h	2.1-10.5 m3/h	1.0-7.5 m3/h
DN50	6-24 m3/h	4-24 m3/h	2.4-16.8 m3/h	2-12 m3/h
DN65	10-40 m3/h	8-40 m3/h	6-28 m3/h	4-20 m3/h
DN80 (light)	10-40 m3/h	8-40 m3/h	6-28 m3/h	4-20 m3/h
DN80 (heavy)	15-60 m3/h	10-60 m3/h	8-42 m3/h	6-30 m3/h
DN100	30-100 m3/h	15-100 m3/h	10-70 m3/h	10-50 m3/h
DN150	45-190 m3/h	34-190 m3/h	27-133 m3/h	19-95 m3/h
DN200	68-340 m3/h	56-340 m3/h	48-238 m3/h	34-170 m3/h