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DN10-DN200 Oval Flow Meter

Reasonable price oval gear flow meter with liquid crystal display for sale. Port size of oval gear flow meter can be chosen between DN10 to DN200. The working temperature of oval gear meter between 30 ℃ and 80 ℃. Oval flowmeter is mainly used for high value liquids, such as oil, chemical etc.
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Delivery date: 7-12 days

The oval gear flow meter is a kind of positive displacement flow meter. As the fluid being measures passes thru the meter, it rotates 2 oval gears in measuring cavity to displace a precise volume of fluid.

Oval flow meter detail one

Display with zero return

  • The pointer indicates the flow rate.
  • The double value shows the single and cumulative flow rate respectively.
Oval flow meter detail two

Oval flow meter with exquisite workmanship

  • Multi-process construction, strong pressure resistance.
  • Spray paint of cast iron makes the service life of flowmeter longer.


Oval gear flow meter consists of two oval gears that rotate inside a housing. The flow of liquid causes the gears to rotate, and the rotation is proportional to the flow rate. Oval flow meter is widely used in chemical industry, medical industry and metallurgical industry.

Oval flow meter application

Display pointer single time, cumulative intelligent liquid crystal display
Output Signal output of pulse, 4-20 mA output, RS485
Return to Zero optional
Measurement Medium diesel oil, gasoline
Port Size DN10-200
Measurement Range 0.04-340 m3/h
Accuracy 0.5 grade, 0.2 grade
Medium Temperature 20 ℃ ~ 100 ℃
Working Pressure 106 Mpa, 25 Mpa, 6.4 Mpa
Working Temperature 30 ℃ ~ 80 ℃
Power Supply DC 12V ~ DC 24V
Protection Level IP65
Explosion Proof Grade CT6
Material cast iron, cast steel, stainless steel


Dimension (Unit: mm)

Oval flow meter dimension

DN L H B C I D D1 N φ
10 150 100 210 120 45 90 60 4 14
15 170 118 226 136 48 95 65 4 14
50 200 150 238 148 53 105 75 4 14
25 260 180 246 156 60 115 85 4 14
40 245 180 271 181 77 145 10 4 18
100 515 418 458 278 131 215 180 8 18
150 540 515 557 377 210 280 240 8 23
200 650 650 624 444 247 335 295 12 23

Q1: Can a oval flow meter have perfect accuracy?
A1: In an ideal world, the flow readings from your process meter would be exactly correct, without any type of deviation. Unfortunately, this is not the case, and the errors inherent in measurement must always be identified, accounted for, and minimized as much as possible.

Q2: Does a oval flow meter need to be calibrated?
A2: During the production of a flow meter, several steps are required such as coil winding, lining processing, and electrode assembly. This series of operations can cause a certain amount of error and dispersion in the device, so a calibration process is required to correct the accuracy.

Q3: Do oval flow meters have temperature compensation?
A3: Yes. As long as these temperature variations are within the temperature compensation range, the output reading compensates for the temperature variations.

Tips: How does oval flow meter work?

Oval gear flow meters are a type of positive displacement flow meter that operates based on the principle of the flow-induced rotation of oval gears. The basic components of an oval gear flow meter include two oval-shaped gears that are placed in a chamber. The chamber has an inlet and an outlet for the fluid flow, and the gears are connected to a shaft that rotates as the fluid passes through the meter.

As the fluid flows through the meter, it enters the chamber and pushes the gears in a rotation. The rotation of the gears is proportional to the volume of fluid that has passed through the meter. The rotation of the gears is detected by sensors that are placed outside the chamber, and the output signal is sent to a display or a data acquisition system.


Thank you for buying industrial test and measurement equipment on, all products sold by sisco and the partner cover a 12 months warranty, effective from the date of receiving the products.

What is covered?

sisco is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.

What is not covered?

  • Product purchased from anyone other than a sisco store or a sisco authorized reseller.
  • Expendable parts.
  • Routine cleaning or normal cosmetic and mechanical wear.
  • Damage from misuse, abuse or neglect.
  • Damage from use of parts other than sisco approved.
  • Damage from use outside the product’s usage or storage parameters.
  • Damage from use of parts not sold by sisco.
  • Damage from modification or incorporation into other products.
  • Damage from repair or replacement of warranted parts by a service provider other than a sisco authorized service provider.
  • Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
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