『Flow meter specifications』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. Wedge flowmeter standard
The core parameter standard of wedge flowmeter is clear: applicable pressure up to 40MPa, temperature range -250 ℃ to 550 ℃, ± 1% accuracy, and ten-year service life are its core advantages. 1. Structural parameter standard • Working pressure: The conventional upper limit is 40MPa, and the range of -0.1~6.4MPa is applicable when expanding application scenarios. • Temperature tolerance: The basic model covers -50~400 ℃, and the special model meets the high temperature requirements from -250 ℃ to 550 ℃. • Diameter specifications: Suitable for pipelines ranging from DN15 to 2200mm and above, suitable for small precision equipment to large industrial pipeline scenarios
2. Performance index specifications • Measurement accuracy of Shanling: Basic error is controlled within ± 1%, and special working conditions allow an error range of ± 1.5%. Repetitive stability: A data fluctuation range of ± 0.2% ensures long-term monitoring reliability. Range elasticity: 10:1 range ratio combined with a minimum flow rate of 0.01m/s, taking into account both weak and large flow monitoring. • Renault adaptation: covering a wide range of fluid states from Reynolds numbers of 300 to 1 × 10 ⁶, including high viscosity liquids (upper limit of 500mPa • S viscosity value)
3. Application configuration classification • Assembly form: integrated structure saves space, split design facilitates tedious environmental maintenance. Functional subdivision and wide collapse type: The conventional type is suitable for monitoring single-phase fluids, while the mixed phase flow type is specifically designed to handle gas-liquid/solid mixed media. • Transmission matching: Equipped with a remote transmission membr
2. Technical specifications and standards for flowmeter installation before 10 and after 5
The "before 10 and after 5" straight pipe section requirement for flowmeter installation is the core specification to ensure measurement accuracy, specifically referring to a straight pipe section of ≥ 10 times the pipe diameter (10D) upstream of the sensor and a straight pipe section of ≥ 5 times the pipe diameter (5D) downstream.
. 1. Core parameter standards • Upstream straight pipe length: ≥ 10D (D is the inner diameter of the pipeline), used to eliminate fluid disturbances caused by bends, valves, and other components • Downstream straight pipe length: ≥ 5D, to avoid downstream disturbances affecting sensor measurements • Pipe diameter calculation benchmark: Bixunshan must use the actual inner diameter of the pipeline for calculation (such as DN100 pipeline inner diameter of about 100mm) Special operating condition adjustment • Different types of flow meters have different requirements: turbine flow meters usually require 15D/5D, while electromagnetic flow meters can reduce the pressure to 5D/3D • When using a pre rectifier, the length of the straight pipe section can be shortened (to be confirmed by the manufacturer) • For multi bend operating conditions, the straight pipe section needs to be extended to 20D or more. 4. After verifying the standard installation, zero calibration and flow calibration should be carried out, and the indication error should not exceed 1.5 times the accuracy level of the flow meter (such as 0.5 level accuracy flow meter error should be ≤ 0.75%). Note: Specif
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