Introduction to the Working Principle and Features of Scraper Flow Meters

A scraper-type meter is a positive-displacement type. Measurement A meter used to measure the volumetric flow rate of fluids in closed pipelines, primarily designed for heavy oils such as crude oil. Scraper-type Browse metrics The total can be displayed on-site. Browse metrics and features a remote transmission output interface. It can be used in conjunction with the corresponding photoelectric pulse converter and flow totalizer for remote measurement, display, and control.

Scraper Browse metrics How the device works: Scraper Browse metrics The metering scraper, driven by the fluid, rotates the rotor simultaneously. As the rotor spins, the scraper alternately extends and retracts under the action of a fixed cam, continuously forming metering chambers against the housing wall to measure the fluid volume. Since the volume of each metering chamber remains constant, the number of rotor revolutions directly corresponds to the amount of fluid that has passed through. Browse metrics The flow is proportional to the fluid, and the fluid volume is determined in the counter via a reduction mechanism.

Scraper-type Browse metrics Characteristics of the plan: 1. High measurement accuracy—basic errors typically range from 0.2% to 0.5%, and can even reach 0.1% under special requirements. Scraper-type Browse metrics The meter's characteristics are generally unaffected by the fluid state and are not limited by the Reynolds number. 2. Scraper-type Browse metrics The meter can measure highly viscous fluids, and changes in fluid viscosity have minimal impact on the indicated value. 3. The wheel-type counter accumulates the total fluid flow. Browse metrics , no external power required—easy to use; the counter keeps a running total. Browse metrics 1. Dual display, one of which can be reset to zero for convenient user operation—no need for continuous measurement. 2. The bearings are made from cemented carbide, offering excellent wear resistance, corrosion protection, sand-proof performance, and outstanding stability. 3. Differential regulator: The stepless speed-regulating differential unit is a domestically produced scraper-type model. Browse metrics The manufacturer's technology allows for easy adjustment. When using the scraper-type Browse metrics When there is a discrepancy between the indicated value of the meter and its verified value, adjustment is required. Simply use a screwdriver to directly rotate the adjusting rod until the desired corrected value is reached—no replacement of any parts is necessary. 6. Scraper Type Browse metrics The system is equipped with an optoelectronic output shaft, which can be used in conjunction with an optoelectronic pulse converter to transmit pulse signals or 4-20mA signals over long distances. The loader is fitted with an electronic meter head that enables RS485-based remote communication, allowing direct reading of instantaneous values. Browse metrics And cumulative Browse metrics , with a longer transmission distance. 7. Scraper Browse metrics Implementation Verification Procedure JJG667-2010 for Liquid Volumetric Instruments Browse metrics Metrological Verification Procedures.

Scraper-affected Browse metrics Factors affecting measurement accuracy include medium temperature, medium viscosity, instrument vibration, and wear in the measuring chamber. As temperature rises, viscosity decreases, leading to greater leakage; conversely, as temperature drops, viscosity increases, reducing leakage. Meanwhile, wear in the metering chamber can cause issues with the scraper-type mechanism. Browse metrics The measured leakage increases, leading to a negative shift in measurement error. Use an online volume tube calibration for the scraper-type flowmeter. Browse metrics This method not only enables accurate real-time verification of scraper flowmeters without disrupting crude oil transportation or compromising measurement results, but also helps reduce wear on the scraper blades. Browse metrics Account for costs during dismantling and transportation, prevent potential damage, and help the company achieve greater economic benefits.