A Cylinder gear flow meter is a micro digital positive displacement flow meter. Can measure very small flow rates and quantify small volumes of liquid. High and low-temperature resistance (-196℃-200℃).

Gear flow meter for Micro flow

Cylinder Gear flow meter is a type of positive displacement flow transmitter. It is a high-precision transmitter for measuring volumetric flow. With the flow of the medium, the gears mesh and rotate. Under the action of fluid flow. Measure the number of revolutions of the gear to know the flow of liquid and liquid flowing through the instrument. It is especially suitable for the flow measurement of heavy oil, polyvinyl alcohol, grease, and other high-viscosity media. It can measure the viscosity of Fluid up to 10000Pa.s.

Sino-Inst offers a variety of Gear flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Features of Gear flow meter

  • High pressure resistance (1.0-45MPa)
  • High and low temperature resistance (-196℃-200℃)
  • Can measure various viscous media
  • High precision and repeatability
  • Pulse output/analog output optional
  • Wide range ratio (1:100)
  • Wide measuring range
  • Strong anti-corrosion and anti-fouling ability (acid and alkali)

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Specifications of Gear Flow Meter

Model

Measure Range

L/H

K

P/L

Pressure-Bar

Temperature

Accuracy

Interface

Installation dimensions

Aluminum alloy

stainless steel

GF02

0.6-50

10500

150

400

-15-80℃

+/- 0.5%

( Range 1:10)

+/- 1.0%    (Range 1:100)

G1/8

Φ84*55

GF04

5-250

9117

150

400

-15-80℃

G1/4

Φ84*55

GF06

10-500

3000

150

400

-15-80℃

G1/4

Φ84*67

GF10

50-1200

1280

150

400

-15-80℃

G1/2

Φ84*67

GF15

200-3000

126.75

150

400

-15-80℃

G3/4

Φ116*98*74

GF25

1000-12000

61.1

150

400

-15-80℃

G1-1/2

158*118*68

GF32

2000-20000

59.9

150

400

-15-80℃

G1-1/2

158*18*68

Flow unit options:L/s L/m L/h m3/s m3/m m3/h Nm3/h
USG/s USG/m USG/h Kg/s
Kg/m Kg/h t/s t/m t/h
Default value: m3/h
Define the unit of instantaneous flow:
L (liter), h (hour), t (ton), s (second), m
(minute)
Flow decimalOptions: 0 1 2 3, default value: 1
Define the number of decimal places
for instantaneous flow
RangeFloating point number: 99999999.00-
0.00 m3/h,
Default value: 100.0 m3/h
When the instantaneous flow reaches
the range, the converter outputs 20mA.
Changing this parameter will affect the
current output, high alarm and low
alarm.
Note: When you modify this set value
(range), please pay attention to the unit
of this parameter (range), you can
modify the unit of this parameter
(range) as needed.
Small signal removalFloating point number: 9.90 ~ 0.00%,
default value: 0.0%
The set value is a percentage of the
range
High alarmFloating point number: 99.00 ~ 1.00%,
default value: 90.0%
The setting value is the percentage of
the range, for example: if the value is
set to 10, it is equal to 10% of the range,
if the absolute value of the
instantaneous flow is greater than
(range × 10%), the converter will output
a high alarm signal, high alarm The
contact is closed.
Low alarmFloating point number: 99.00 ~ 0.00% default value: 0.0%
The setting value is the percentage of
the range. For example: if the value is
set to 10, it is equal to 10% of the range.
If the absolute value of the
instantaneous flow is less than (range ×
10%), the converter will output a low
alarm signal and a low alarm The
contact is closed.
Damping timeFloating point number: 30.0 ~ 0.1,
default value: 1
Total unitOptions: L(liter) m³ Nm3 USG Kg t(ton),
Default value: m³
Define total unit
The total number of decimal placesOptions: 0 1 2 3, default value: 1
Define the number of decimal places
for the total
Preset totalOptions: 99999999.00-0.00 m3/h,
default value: 0.0 m3/h
Clear total or set total value

Gear flow meter application field

  • Resin and glue measurement
  • Hydraulic oil, lubricating oil, grease measurement
  • Fuel oil measurement
  • Ink, asphalt measurement
  • Liquid nitrogen, freezing liquid, solvent measurement
  • Edible oil, fish oil and food filling measurement
  • Chemical and anti-corrosion requirements fluid measurement
  • Fluid quantitative control system

Read more General-purpose Flow Totalizer for Data collection and calculation

Gear flow meter working principle

Gear flow transmitter is a type of positive displacement flow transmitter. It is a high-precision transmitter for measuring volume flow.

With the flow of the medium, the gears mesh and rotate. Under the action of the fluid flow, a pressure difference is formed at both ends of the instrument inlet and outlet. There is no need for a power supply. A pair of gears rotate freely. The cavity between the gears is filled with liquid. Discharge and measure the number of revolutions of the gear to know the flow of liquid and liquid flowing through the instrument.

Figure 1 Schematic diagram of fluid flow
Figure 1 Schematic diagram of fluid flow

The rotation speed of the round gear transmitter is detected by the sensor coil in the signal amplifier mounted on the watch case. The signal amplifier is not in contact with the measured medium. When the transmitter gear cuts the magnetic field lines generated by the permanent magnet in the housing, it will cause the magnetic flux in the sensing coil to change.

The sensing coil sends the detected magnetic flux periodic change signal to the preamplifier, amplifies and reshapes the signal, generates a pulse signal proportional to the flow rate, and sends it to the unit conversion and flow integration circuit to obtain and display the cumulative flow value. At the same time, the pulse signal is sent to the frequency current conversion circuit, which converts the pulse signal into an analog current quantity, and then indicates the instantaneous flow value.

The round gear transmitter has high machining accuracy and precise installation. The rotation of the gear is scanned non-contact, and each tooth generates a pulse with a very high resolution. Cylindrical gear transmitters can measure very small flow and quantify the small volume of liquid.

Extended reading: Tri clamp-Stainless steel Sanitary Positive Displacement Flow Meter

Oval Gear Flow Meter

Oval gear flow meters (also known as displacement flow meters, gear flow meters) are a type of positive displacement flow meters, which are the most accurate type of flow meters. It uses a mechanical measuring element to continuously divide the fluid into a single known volume part, and measures the total flow volume according to the number of times that the metering chamber is filled and discharged with the volume part of the fluid successively and repeatedly. The oval gear flowmeter can be made of different materials (cast iron, cast steel, 304 stainless steel, 316 stainless steel), and is suitable for flow measurement in the chemical, petroleum, pharmaceutical, electric power, metallurgy and food industries.

The measurement principle of the gear of the Cylinder Gear flow meter is similar to that of the oval gear flow meter. But the gear shape is different.

Oval Gear Flow Meter Advantages and Disadvantages

The oval gear flowmeter uses the principle of volumetric type. Suitable for testing various viscous liquids. Flow measurement of heavy oil, polyvinyl alcohol, resin and other high-viscosity media.

Advantages:

  1. The measurement accuracy of the oval gear flowmeter is high. The basic error is generally ±0.5%R. Special ones can reach ±0.2% R or higher. It is especially suitable for use in the field where high-precision measurement is required.
  2. It has no influence on the measurement accuracy when measuring the distortion of the flow velocity field of the rotating flow and the pipeline choke. There is no requirement for the front straight pipe section.
  3. The oval gear flowmeter can be used to measure high-viscosity fluids. Wide flow range. It is generally 10:1 to 5:1. Special ones can reach 30:1 or greater.
  4. With direct reading of on-site flow. It can measure the cumulative total without external power supply. The display is clear and the operation is convenient.

The oval gear flowmeter is a combination of measuring elements. The indirect method of volumetric flow measurement. Compared with other flow meters that use velocity to derive flow. Oval gear flow meters have the following disadvantages:

  1. The design of the measurement structure is complicated. Large and bulky. In particular, the flowmeter with a larger caliber is bulky. Compared with other general flow meters (such as orifice flow meters, float flow meters, electromagnetic flow meters, vortex flow meters). The measured medium type, medium working condition (temperature, pressure), and caliber are relatively limited. The scope of adaptation is narrow.
  2. Not suitable for high and low temperature occasions. Because of the thermal expansion and deformation of parts at high temperatures, the material becomes brittle at low temperatures. The usable temperature range is -30~+180℃. The maximum pressure is 10MPa.
  3. The oval gear flowmeter is only suitable for clean single-phase fluids. When the fluid contains particles or dirt, a filter must be installed upstream. Not only increases the pressure loss, but also increases the maintenance work. If measuring liquids containing gas, a gas separator must be installed.
  4. Poor safety performance during measurement. If the measuring element is stuck in motion, the fluid cannot pass through. The cut-off piping system cannot be used.
  5. During the measurement process, the pulsation caused by the flow of fluid during the measurement process. Large-diameter flowmeters can also generate noise. Even the pipes vibrate.

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Frequently
Asked
Questions

Gear flow meters are a type of positive displacement flow meters. It is used for precise continuous or discontinuous measurement of the flow or instantaneous flow of liquid in the pipeline. It is especially suitable for the flow measurement of heavy oil, polyvinyl alcohol, resin, and other high viscosity media.

Extended reading: Positive Displacement Flow meter Technology

Oval gear flow meter (also known as displacement flowmeter, gear flowmeter) is a type of positive displacement flowmeter. It is a category with higher accuracy in flow meters. It uses mechanical measuring elements to continuously divide the fluid into individual known volume parts. The total flow volume is measured according to the number of times that the metering chamber is filled and discharged with this volume of fluid successively and repeatedly.
The oval gear flowmeter can be made of different materials (cast iron, cast steel, 304 stainless steel, 316 stainless steel), and is suitable for flow measurement in the chemical, petroleum, pharmaceutical, electric power, metallurgy, and food industries.
Extended reading: Stainless steel flow meters|304-316 optional

You may like:

Sino-Inst, Manufacturer for Gear flow meter for Microflow. For example crude oil flow meter, diesel flow meter, gasoline flow meter.

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

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Cylinder Gear Flow Meter for Micro Flow

A Cylinder gear flow meter is a micro digital positive displacement flow meter. Can measure very small flow rates and quantify small volumes of liquid. High and low-temperature resistance (-196℃-200℃).

Product SKU: Gear flow meter for Micro flow

Product Brand: Sino-Inst

Product Currency: USD

Product Price: 800

Price Valid Until: 2099-09-09

Product In-Stock: PreOrder

Editor's Rating:
5

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