Turbine Flowmeter
Turbine Flowmeter (Abbr. TUF) is a main type of Impeller Flowmeters also including the Anemoscope and Water meter. TUF is made up of Sensor and Conversion-Show. The Sensor reacts to the average velocity of fluid with multi-blades rotor so as to speculating the flow value and the accumulative flow value. The velocity (or circles) of rotor can be picked up by the way of mechanism, electromagnetic induction, photoelectricity, before displaying and transmitting the records by reading device.
It can be used in value control, siren when excess, if co-ordination with special display instrument. So it is the ideal instrument of measuring flow value and saving energy. It has the following distinguishing advantages:
- Wide flow rangeability including low flow rates
- Good level of accuracy at an economic price
- Simple, durable construction
- Easy to install and maintain
- Flexible connection to flow instruments for flow control
- Turbine meters can operate over a wide range of temperatures and pressures
- Provides a convenient signal output
Working Principle
A turbine flow meter is used for volumetric total flow and/or flow rate measurement and has a relatively simple working principle. As fluid flows through the turbine meter, it impinges upon turbine blades that are free to rotate about an axis along the center line of the turbine housing.
The blades are built from a paramagnetic material. So pickoffs, mounted externally without contact with the fluid, create a magnetic field in the pipe. Thus, when the blades pass through this field, they generate voltage proportional to the velocity of rotation, which can be used to calculate the flow rate.
The signal from the pickoffs can go into an external transmitter and convert to other types of communication. You can also use a preamplifier to read these pulses directly from the turbine flow meter without the transmitter.
Key Feature
- High accuracy (regular accuracy±1%R, ±5%R, highest accuracy±0.2% R
- High frequency (3-4kHz) can be achieved, and has high resolution.
- Wide rangeability: medium or large diameter may reach 1:20,and small diameters are 1:10.
- Compact and light weight structure, convenient installation and maintenance, extensive application ability.
- Pulse frequency signal output is applicable to totality calculation and computer connection with no zero drift and strong anti-interference capacity
- Good repeatability (short-term one reaches 0.05%–0.2%), priority to be used in trade settlement for its extremely high accuracy in the regular calibration or on-line calibration
- Complete tailored version sensors can be designed to different kinds of types according to users special needs. For instance, low temperature type, high pressure type, sanitary type, etc.
- Application to high pressure measurement with its unnecessary opening hole to be made into high pressure instruments.
Application Range
Turbine flow meters find use in monitoring of clean liquid flows in chemical, petroleum and water industries.
- These are used in oil and gas
- Water and waste water,
- Gas utility
- Chemical
- Power, food and beverage
- Aerospace, pharmaceutical
- Metals and mining, and pulp and paper
Technical Specification
| # | Item Name | Parameter Values |
|---|---|---|
1 | Applicable Diameter | DN15-DN300, other caliber supply agreement |
2 | Applicable medium | gas, vapor, liquid. |
3 | Ambient temperature | - 30 ~ + 70 ℃ / - 20 ~ + 70 ℃ liquid crystal display |
4 | Relative humidity | 5% to 90% |
5 | Atmospheric pressure | 86 ~ 106 kPa |
6 | Medium temperature | - 50 ~ + 100 ℃ / - 50 ~ + 200 ℃ |
7 | Supply voltage | a) TB3WE three-wire: (1) with external power supply: 12 ~ 24VDC / 30mA (-20% ~ + 15%), weak output as low as6V. (2) battery power (optional): Lithium battery 3.6V (2-13Ah)/0.4mA. b) TB2WE wire system: 12 ~ 24VDC / 4-20mA (-20% ~ + 15%). |
8 | Output signal | a) TB3WE three-wire: (1) pulse output: high ≥8V (supply voltage -1V). LOW <0.5V. Open (2) including pull-up resistor 2K7 collector output. (3) RS485 communication: the instrument can be configured to RS485 communication interface. Communication distance ≤1200mm. b) TB2WE wire system: (1) two-wire 4 ~ 20mA linear calibration current output (24V when the load circuit ≤600Ω). (2) only of calibration (interference current) without correction original pulse output: high ≥ 5V (supply voltage -1V). |
Ordering Details
Just need 1 pcs
5 pcs/3 days, 10 pcs/5 days, 50 pcs/10 days
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Qingao, Tianjin, Shanghai, Shenzhen
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12 Months
