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Gas Turbine Flowmeter
Equipped with new microprocessor and high-performance integrated chips, featuring high calculation accuracy, powerful overall functions and superior performance.
Adopts advanced micro-power high technology for low overall power consumption. It can operate for a long time powered by internal batteries or external power supply.
According to the flow frequency signal, the meter can automatically perform linear correction in up to 8 segments, improving the calculation accuracy of the meter as required by users.
Uses EEPROM data storage technology, supporting storage and query of historical data, with three optional historical data recording modes for users.
The flowmeter head can be rotated by 180°, enabling simple and convenient installation and operation.
High accuracy, generally up to ±1.5%R and ±1.0%R.
Excellent repeatability, with short-term repeatability reaching 0.05%R ~ 0.2%R. Thanks to its favorable repeatability, it is the preferred flowmeter for trade settlement.
It can detect the temperature, pressure and flow rate of the measured gas, realize automatic tracking and compensation of flow, and display the gas flow under standard conditions (Pn=101.325kPa, Tn=293.15K). Real-time query of temperature, pressure, time, date and other data is available.
The gas turbine flowmeter consists of a sensor and a converter‑display unit. The sensor uses a multi‑blade rotor to sense the average flow velocity of the fluid, so as to calculate the flow rate or total flow. As a velocity‑type instrument, the turbine flowmeter features high accuracy, good repeatability, simple structure, few moving parts, high‑pressure resistance, wide measuring range, compact size, light weight, low pressure loss and easy maintenance. It is applied to measure volumetric flow and total flow of low‑viscosity gas in closed pipelines.
The blades of each meter undergo strict dynamic‑balance testing. Every unit is subjected to multi‑point calibration on a sonic‑nozzle calibration bench before leaving the factory. It converts flow velocity into turbine rotational speed, and further converts rotational speed into an electrical signal proportional to flow rate. Its frequency‑output signal facilitates digital processing.
Two main versions are available: basic type and temperature‑pressure compensation type. The basic type measures only flow signals, while the temperature‑pressure compensation type can measure temperature, pressure and standard volumetric flow simultaneously. Both versions are offered in integral and split configurations to adapt to various installation environments. This product is widely used in petroleum, chemical, scientific research, textile and boiler‑related industries.
Features
● Adopts imported precision bearings dedicated for instruments with excellent stability and lubrication performance.
● Carefully designed flow‑path structure improves media compatibility of the flowmeter.
● Unique thrust‑back and sealing‑structure design ensures long‑term reliable bearing operation.
● The meter head can be rotated by 180°, enabling simple and convenient installation and operation.
● High‑performance flow straightener minimizes straight‑pipe section requirements for upstream and downstream.
Technical Parameters
表格
| Item | Performance Parameters |
|---|---|
| Nominal Diameter | DN20 ~ DN300 |
| Accuracy Grade | ±1.5%, ±1.0% (custom‑built required) |
| Material | Meter body: 304 stainless steel;Impeller: high‑quality aluminum alloy;Converter: cast aluminum |
| Operating Conditions | Medium temperature: -20℃ ~ +80℃Ambient temperature: -30℃ ~ +65℃Relative humidity: 5% ~ 90%Atmospheric pressure: 86 kPa ~ 106 kPa |
| Power Supply | External power: +24VDC±15% (for 4‑20 mA, pulse output, RS485)Internal power: 3.6V 10AH lithium‑battery; low‑voltage indication triggers when voltage drops below 2.0V |
| Display | LCD display for instantaneous flow and total flow;Temperature‑pressure‑compensated version additionally displays temperature and pressure |
| Signal Output | Pulse signal, 4‑20 mA, IC control signal |
| Communication Output | RS485 communication |
| Signal Cable Port | Internal thread M20×1.5 |
| Explosion‑proof Rating | ExdIICT6 |
| Protection Class | IP65 |
