ATGF Gear Flow Meter from China Manufacturer - Aister Instrument (Shanghai) Co., Ltd

Introduction Features Specifications Model Selection Application Installation

Introduction

The flowmeter cavity has a pair of engaged gears as a rotor, and the two gears and the cavity can respectively form a fixed volume, called Standard volume and flow rate are measured by calculating the number of standard volume circulating within a certain period of time.as illustrated in following figure:

design feature:
According to the gear motor principle, the measurement gear is driven by the hydraulic flow.

--The gear run without contact in the measuring chamber. Use low-friction ball bearings or sliding bearings.
--The movement of the gear is detected by a contactless sensor located in the cover plate. A non-magnetic compression separator is installed between the sensor chamber and the metering chamber.
--When the metering mechanism rotates a tooth, the sensor sends a signal corresponding to a tooth capacity V_gz。
--The signal is converted to a square wave signal through a preamplifier.

Features

For various applications, with the help of different gaps, different bearing types and different materials, ATGF series gear type flowmeter can realize the measurement of different media.

With a wide range of measurements and multiple specifications, it can meet different needs.

Within the specified range, the measurements are not affected by the viscosity.

Low pressure down

High sensitivity measurement

High work pressure

High-precision measurement with excellent repetition accuracy

In a wide temperature range, the output signal is not affected by the temperature

High precision is still maintained at the lower limit of the low flow rate measurement range

010

High operational reliability of the electronic components

Specifications

technical parameter

specifications parameter	ATGF2	ATGF7	ATGF20	ATGF50	ATGF100
working pressure	40MPa	40MPa	40MPa	40MPa	40MPa
temperature range	-60℃~+150℃	-60℃~+150℃	-60℃~+150℃	-60℃~+150℃	-60℃~+150℃
Viscosity range	1~100,000cSt	1~100,000cSt	1~10,000cSt	1~8,000cSt	1~8,000cSt
accuracy	± 0.5% of the measured value (Viscosity> 20 cSt,)	± 0.5% of the measured value (Viscosity> 30 cSt,)	± 0.5% of the measured value (Viscosity> 30 cSt,)	± 0.5% of the measured value (Viscosity> 30 cSt,)	± 0.5% of the measured value (Viscosity> 30 cSt,)
repeatability precision	± 0.05% (same working condition)
Flow range	0.005--2 Alitre / minute	0.05--7 Alitre / minute	0.2-- 20 Alitre / minute	0.3-- 50 Alitre / minute	0.5-- 100 Alitre / minute
Shell material	stainless steel 316L	stainless steel 316L	stainless steel 316L	stainless steel 316L	stainless steel 316L
Gear material	stainless steel 316L	De standard stainless steel 1.4122	De standard stainless steel 1.4122	De standard stainless steel 1.4122	De standard stainless steel 1.4122
bearing	440 stainless steel ball bearings	Tungsten steel alloy sliding bearings	Tungsten steel alloy sliding bearings	Tungsten steel alloy sliding bearings	Tungsten steel alloy sliding bearings
sealing material	FPM	FPM	FPM	FPM	FPM
Maximum allowable impurity partiATGFe size	20µm	30µm	30µm	30µm	30µm

Measuring specifications

series	start point [l/min]	measuring range [l/min]	impulse ratio K P/L	Connect thread inch	weight KG
ATGF2	0.0005	0.005–2	15000.00	G1/4	1.4
ATGF7	0.015	0.05–7	4000.00	G1/4	1.9
ATGF20	0.05	0.2–20	1340.00	G1/2	3
ATGF50	0.1	0.3–50	308.00	G3/4	7.7
ATGF100	0.3	0.5–100	96.50	G1	14.7

Model Selection

01 Measure the medium, temperature, whether there is corrosion

02 Flow range and inside diameter of user pipe

03 Classification of process

04 Whether to local display

05 Working power supply

06 Signal output, communication

07 Whether to explosion-proof

08 Installation mode

09 Precision class

Application

Industrial process

Energy measurement

Environmental protection engineering

Transportation

Biotechnology

Scientific experiment

Marine meteorology

Rivers and lakes

Installation

1. Installation of the field conversion display
The field conversion display is mounted on the main body of the turbine flow sensor through the thread of M16X1. The thread should be screwed to the end as far as possible Lock nut gently. To change the display direction, only release the M20 * 1.5 set screw fixing the screw seat and turn the head Move to the desired direction.
Note: Do not exceed 360° at the corners.

2. Selection of connection cables
a.The connection between the amplifier and the display instrument, using a three-core stranded copper wire with an outer braided shield and coated with plastic or oil-resistant rubber, Its effective cross-section area is 1.25~2mm2; For the output of the conversion display in the place vulnerable to the noise of electric noise to use shielded wire.
b.In areas where the atmosphere contains corrosive gases or liquids such as oil, gas or solvents, wires or cables suitable for such conditions shall be used.

3. Wiring matters needing attention
a.Use a complete cable line whenever possible
b.The wiring position should be as far as possible from the electric noise sources (such as high-power transformers, motors and strong power lines), and should be avoided with power
The power cord has a parallel wiring line.
c.It is recommended to use non-tin welded ATGFamping ATGFips at the end of the thick wire.
d.For waterproof and mechanical damage, it is best to put the cable into the metal catheter, but there should not be high power transmission in the same catheter
Cable, (both cannot be installed if the maximum power delivered by a transmission cable is greater than 10 times the minimum power conveyed by a flowmeter signal cable
In the same catheter).
e.For areas with a strong external magnetic field, the axis of the detection device should be perpendicular to the magnetic flux direction of the external magnetic field, or high conductive magnetic materials should be used
The material shields the flow sensor or the external magnetic source.
f.The connection of explosion-proof gear flow sensor cable must strictly comply with the relevant standards of explosion-proof amplifier.

4. Ground
a.The shielding wire can only be grounded at one end, preferably at the display instrument end.
b.Grthing with 600V PVC insulated wire.
c.The grounding shall be good and reliable, and the explosion-proof grounding resistance shall be less than 10 Ω.

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