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GF Series Gear Flow Meter | Manufacturer Supply

GF Series Gear Flow Meter is the new Positive Displacement Flow Meter. Suitable for micro flow (minimum 0.6L/h), high temperature, high pressure, and extremely low temperature.

High pressure resistance (1.0-40MPa);
High and low temperature resistance (-196℃-200℃);
Can measure various viscous liquid media;
High precision and repeatability;
Pulse output/analog output optional;
Range ratio wide (1:100);
Strong anti-corrosion and anti-fouling ability (acid and alkali);

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Gear Flow Meter Description

GF Series Gear Flow Meter is a transmitter for measuring volume flow with high accuracy.

The rotation of the gear is scanned non-contactly, producing a pulse for each tooth with very high resolution. Cylindrical gear transmitters can measure very small flows and quantify small volumes of liquid. Compared with oval gear flowmeters, GF series gear flowmeters have more advantages in measuring micro-flow.

Available in aluminum alloy and stainless steel materials. Hydraulic oil, diesel, and even high-viscosity fluids can be measured. The maximum withstand pressure is 40MPa.

There is a new type of polytetrafluoroethylene material that can withstand hydrofluoric acid, 98% sulfuric acid, nitric acid, hydrochloric acid, etc.

GF Series Gear Flow Meter Technical Parameters

Technical Parameters

Measuring medium	Liquid
Executive standard	JB/T9242-2015 Positive Displacement Flowmeters for Liquids-General Technical Requirements
Medium viscosity	5…500mm2/s , Customized high viscosity type, up to 400000cps (4*10^5)
Environment temperature	-40…85℃
Medium temperature	-40…80℃, (-196℃， +200℃ custom-made)
Pressure	50bar for aluminum/100bar for stainless steel (custom-made 400bar for high pressure)
Accuracy	Read value: +/-0.5%, read value: (within measuring range of 1: 20),read value: +/-1% (full measuring range), (the data above is based on liquid having the viscosity of 20cst)
Repeatability	Read value: +/-0.1%
Power supply	9-26VDC; Optional battery powered
Explosive-proof grade	ExdIIct6Gb
Protection grade	IP65
Output signal	Analog quantity(4-20mA, 1-5V and 2-10V), impulse frequency 5Khz (Max)
Communication mode	RS485, supported standard: Modbus-RTU protocol, Hart GPRS Bluetooth
Electrical interface	M20*1.5(equipped with metal explosion-proof joint)
Material	Body: 1.4305(304SS), 1.4144(316L) and AL ; PTFE; Gear: 304SS, 316L and high hardness alloy steel ;PTFE; Bearing: Rolling bearing or sliding bearing ;PTFE; Sealing: FKM, NBR and PTFE;
Flange	Chinese standard(GB/T9112 and HG/T20592-2010), American standard and Japanese standard are optional.
Accessory	Internal and external thread adapter, Ermeto connector and hygienic chuck connector.

Flow Range

Model	Measure Range	K	Pressure-Bar		Temperature	Accuracy	Interface
Model	L/H	P/L	Aluminum alloy	stainless steel	Temperature	Accuracy	Interface
GF02	0.6-50	10500	150	400	-15-80℃	+/- 0.5% ( Range 1:10) +/- 1.0% （Range 1:100）	G1/4
GF04	5-250	9117	150	400	-15-80℃		G3/8
GF06	10-500	3000	150	400	-15-80℃		G1/2
GF10	50-1200	1280	150	400	-15-80℃		G1/2
GF15	200-3000	126.75	150	400	-15-80℃		G3/4
GF25	1000-12000	61.1	150	400	-15-80℃		G1
GF32	2000-20000	59.9	150	400	-15-80℃		G1-1/4

Dimensions

Model/size	A	B	C	D	E	F	G	H
GF02	Φ83	80	55	70	G1/4	40	M6	16
GF04	Φ83	80	55	70	G3/8	55	M6	16
GF06	Φ83	80	62	70	G1/2	55	M6	14
GF10	Φ83	80	65	70	G1/2	55	M6	14
GF15	Φ113	110	65	70	G3/4	90	M6	28
GF25	Φ158	140	85	70	G1	110	M8	40
GF32	Φ218	160	100	70	G1-1/4	180	M8	45

The above dimensions are standard product dimensions. In special cases, it can be customized according to the customer’s on-site needs.

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GF Series Gear Flow Meter manufactured and supplied by Sino-Inst is of excellent quality, better price! It is widely used in the measurement and control of various liquid flows.

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Gear Flow Meter Applications

GF series gear flowmeter has a wide range of applications. Basically most pure fluids can be measured. As long as there are no impurity particles. mainly include:

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

The following are applications under special working conditions:

1. High viscosity fluid measurement:
GF Series Gear Flow Meter is especially suitable for flow measurement of heavy oil, polyvinyl alcohol, resin, glue, edible oil, dyes and other medium with high viscosity. It can measure fluid with viscosity up to 400000Pa.s.

2. Cryogenic Liquids – Liquid Nitrogen – Liquid Oxygen -196℃ measurement:
There are many customers who use our low temperature type GF Series Gear Flow Meter to measure cryogenic liquids.
Such as -196 ℃ liquid nitrogen, liquid oxygen, liquid hydrogen, liquefied carbon dioxide and so on. The measurements are good.

3. Measurement of High Pressure Liquids:
The gear flowmeter with aluminum alloy main body can withstand the pressure of 1.6 MPa;
The gear flowmeter with the main body of PTFE can withstand the pressure of 0.6MPa;
The gear flowmeter with the main body made of stainless steel can withstand the ultra-high pressure of 40MPa.

4.Low Flow Liquids measurement:
GF Series Gear Flow Meter can measure the tiny flow of 0.6-50L/H. Even drips are measurable.

GF Series Gear Flow Meter | Manufacturer Supply Detail Display

More Detail

What Is Gear Flow Meter?

Gear flowmeter is essentially a positive displacement flowmeter. It is mainly composed of metering housing, gear rotor and transmission components. Suitable for flow measurement of various cleaning liquids.

The working principle of the gear flowmeter is that the liquid drives a pair of gears to rotate. The volume of each cavity is a fixed volume. The gear speed leads the sensor to send out a synchronized pulse count. The rotation of the gear is transmitted to the counter through the magnetic seal coupling and transmission reduction mechanism, which directly indicates the total amount flowing through the flow meter.

Different shapes and structures of gears are different types of gear flowmeters. For example, our GF series flowmeter is a spur gear.

Gear Flow Meter Working Principle

The gear flowmeter applies the pressure difference, generated by the liquid while it flows through the flowmeter chamber, to push a air of gears to be engaged, and such two gears are exactly matching with each other and are enclosed in a precision machined chamber.

Chambers of the same volume will be formed between each gear root and measuring chamber. The gear rotates to cut the liquid into the liquid of single and known volume.

The total volume of liquid is measured by the number of times of repetitive charge of the liquid into and and discharge from the chamber. In a word, it is similar to “bailing out water with a water ladle”.

Set the circulating volume of flowmeter as ν, the number of revolution of the gear in a certain period of time as N, and the volume of liquid flowing through the flowmeter in unit time as V, then:

V=Nν

Non-contacting sensor generates a pulse (P) by inducing a gear.
The extracted signal will be displayed in form of square wave output signal via digitalization of signal amplifier. The square wave output signal can be processed by any external electronic products (e.g. PLC and IC), for display of instantaneous flow rate and accumulative volume via a local display instrument or wireless remote transmission or other forms of presentation by means of GPRS and so on.