Overview
This product is manufactured and tested in strict accordance with JG1037-2008 Verification Procedure for Turbine Flow Meters and GB/T21391-2008 National Standard for Measuring Natural Gas with Gas Turbine Flow Meters.
This product has obtained an explosion-proof certificate from the National Explosion-proof Product Quality Supervision Department, explosion-proof mark: ExdlICT6Gb, number: CNEx17.0933.

This series of products is our company's latest research and development of gas turbine flow meters. It integrates advanced concepts from aerospace technology with theories of fluid mechanics and electromagnetics, and is a new generation of high-precision, high-reliability gas precision metering instrument that combines temperature, pressure, and flow sensors with an intelligent flow totalizer. It features excellent low-pressure and high-pressure metering performance, multiple signal output methods, and strong anti-interference capabilities against fluid disturbances. It is widely applicable to the metering of natural gas, coal gas, liquefied petroleum gas, hydrocarbon gases, and other gases. It is combined with modern CNC machining equipment and applies complete and effective process methods.

Our flow meters are rationally structured, durable, repeatable, and easy to install.

Our company provides highly reliable products to our customers. During the R&D phase, in cooperation with bearing manufacturers, we conducted continuous durability tests, exploring the reliability of the bearings and structure. The meter core adopts an integrated design. We provide you with first-class products and first-class reliability assurance, reducing your after-sales burden.

Product Features
* High-quality aluminum alloy turbine, with higher flow stabilization and corrosion resistance.
* Imported special bearings, long service life.
* The metering chamber is isolated from the ventilation chamber, ensuring the safety of the instrument.
* It can detect the temperature, pressure, and flow rate of the measured gas, perform automatic flow tracking compensation, and display the cumulative gas volume under standard conditions (P.=101.325kPa, T.=293.15K); real-time temperature and pressure values ​​can be queried.
Wide flow range (Qmax/Qmin≥20:1), good repeatability, and high accuracy (up to grade 1.0). Low pressure loss and low starting flow rate, down to 0.6 m²/h.
Intelligent instrument coefficient with multi-point nonlinear correction.
Built-in pressure and temperature sensors, high safety performance, compact structure, and aesthetically pleasing appearance.
Low power consumption operation; a single 3.6V 10Ah lithium battery can last for more than one year.
Utilizing a new microprocessor and high-performance integrated chip, it boasts high computational accuracy, powerful functions, and superior performance. Employing world-class low-power technology, the overall power consumption is low. It can operate continuously powered by an internal battery or by external power supply.
Our instruments can employ linear correction technology, with up to ten segments of linear correction. This greatly improves the instrument's calculation accuracy.

The flow meter head can rotate 350 degrees for convenient on-site data viewing.

High accuracy, generally reaching ±1.5%, with high precision reaching ±1.0%.

Good repeatability, short-term repeatability can reach 0.05%R~0.2%R. Due to its excellent repeatability, it is the preferred flow meter for trade settlement.

Working Principle

When fluid flows into the flow meter, it is rectified and accelerated by the dedicated integrated rectifier at the inlet. Because the turbine blades are at a certain angle to the fluid flow direction, the turbine generates rotational torque. After overcoming frictional torque and fluid resistance torque, the turbine begins to rotate. Within a certain flow range, the angular velocity of the turbine rotation is directly proportional to the fluid volumetric flow rate. Based on the principle of electromagnetic induction, a pulse signal proportional to the fluid volumetric flow rate is induced from a coaxially rotating signal wheel using a magnetic sensor. This signal is amplified, filtered, and shaped, and then fed together with signals from temperature and pressure sensors into the microprocessor unit of the intelligent flow totalizer for calculation and processing. The gas volumetric flow rate and total volume are then directly displayed on the LCD screen.

Technical Specifications:
4.1 D/B Type Basic Technical Specifications

4.1.1 D/B Type Measuring Range

4.1.2 Accuracy Class: 1.0 class 1.5 class

4.1.3 Operating Conditions:

Ambient Temperature: -30℃~+60℃; Atmospheric Pressure: 86kPa~106kPa;

Medium Temperature: -20℃~+80℃; Relative Humidity: 5%～95%

4.1.4 Electrical Performance Indicators:

4.1.5 Technical Features

Economical, practical, durable, and stylish appearance.
Uses imported military-grade bearings.
Wide measuring range and low starting flow rate.
The main body is made of high-quality aluminum alloy or stainless steel, and the impeller is made of aluminum alloy; corrosion-resistant and impact-resistant. Cast aluminum explosion-proof meter head, which can rotate 350 degrees for easy data viewing.
The built-in rectifier significantly shortens the distance between the preceding and following straight pipe sections.

The factory-installed filter effectively removes impurities, reducing damage to the impeller.

A large LCD screen displays instantaneous and cumulative flow, temperature, pressure, standard conditions, and operating conditions.

It can be used with our IC card controller to enable prepaid functionality (payment before gas use).

It can be used with our intelligent LNG/CNG gas station management system.

4.2 F-type Basic Technical Specifications

4.2.1 F-type Measuring Range