Product Introduction:

Alloy scraper flowmeter is a new type of volumetric flowmeter with unique design, precision machining and precision assembly. The scraper flowmeter has only one rotor and rotates at a constant speed. When used to measure liquid flow in pipelines, it has the characteristics of high measurement accuracy, smooth operation, no pulsation, low noise, sand control, long service life, and strong adaptability to viscosity changes. Therefore, it is widely used in measuring devices for the transfer and trade settlement of crude oil, high water content crude oil, residual oil, refined oil, light hydrocarbons and other media in the petroleum, chemical, metallurgical, power, transportation, and terminal industries.

The alloy scraper flowmeter can indicate on site, read the code directly, and can be equipped with a pulse transmitter to output electrical pulse signals (or current signals) for display instruments and computer processing, enabling remote centralized control of pipeline flow and achieving automation.

Characteristics of Alloy Scraper Flow Meter

1. Sand prevention and waterproofing;

2. Smooth operation with low noise and long lifespan;

3. Constant speed rotation without pulsation;

4. Accurate measurement and high precision.

Working principle of alloy scraper flowmeter

The measuring chamber of the alloy scraper flowmeter consists of a measuring box, a rotor housing, a cover plate, and an alloy scraper. These known volume measuring chambers serve as the measuring unit of the flowmeter to measure the fluid. The drill of the flowmeter is driven to rotate by the small pressure difference at its inlet and outlet, and continuously sends the liquid from the inlet to the outlet through the measuring chamber. The rotor transmits the number of rotations to the counting mechanism through the sealed coupling and transmission system, directly indicating the total amount of liquid flowing through the flowmeter.

The accuracy level and basic error limit are shown in Table 1

Table 1

Repetitive error: The repeatability error of each flow point of the flowmeter shall not exceed one-third of the absolute value of the basic error limit of the flowmeter; Nominal pressure: 1.6, 2.5, 4.0, 6.4MPa;

Working temperature: -20 ℃+80 ℃, 0 ℃+120 ℃, special+100 ℃~+200 ℃

Environmental temperature: -30 ℃^~_~+60 ℃；

Connecting flanges: Connecting flanges with pressures of 1.6MPa and 2.5MPa are manufactured according to GB/T9119-2000 protruding flat welding flanges;

The connecting flanges with pressures of 4.0MPa and 6.4MPa shall be manufactured according to JB/T82.2-94 (B) concave surface welded steel pipe flanges; Optical pulse current converters can also be manufactured according to the flange standards specified by the user.

Explosion proof mark: ExdIICT6 (excluding acetylene)

Explosion proof certificate number: GYB03478; Power supply voltage: 12~24VDC, output pulse frequency:<10000Hz, output pulse amplitude: 12V

Protection level: IP65