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1. What parameters are generally set for an E+H electromagnetic flowmeter?
The conventional setting parameters for an E+H electromagnetic flowmeter mainly include instrument constants, measurement units, pipe diameter, fluid type, calibration parameters, and output signals, which need to be configured specifically according to the on-site working conditions and measurement requirements. 1. Core parameter instrument constant: The unique coefficient calibrated on the nameplate or factory report of each flow cluster simulation and measurement instrument, used to convert sensor signals into actual flow values. Input errors can cause measurement deviation. Inner diameter of pipeline: The actual inner diameter of the pipeline (unit: mm/mm) must be accurately entered, which directly affects the calculation of flow velocity and the accuracy of flow rate. Flow unit: Choose cubic meters per hour (m ³/h), liters per minute (L/min), etc. as needed, consistent with the system display unit
2. Fluid and calibration parameters Fluid conductivity: Set the minimum conductivity threshold of the measured fluid (usually ≥ 5 μ S/cm), below which normal measurement may not be possible. Zero point calibration: carried out when the pipeline is filled with fluid and there is no flow, to eliminate static errors. Full scale calibration: Adjust at a known standard flow rate to ensure full range accuracy (with standard device operation)
3. Signal processing and output damping time: Adjust response speed (unit: seconds), usually set to 1-5 seconds; When the operating conditions fluctuate greatly, increasing damping can stabilize the reading, but it will reduce the response speed. Current output: usually set to 4-20mA correspondi
4. Other key settings for flow direction: define forward/reverse flow measurement logic, which needs to be consistent with the actual flow direction of the pipeline. Air traffic control alarm threshold: Set conductivity or signal strength threshold collapse trace to detect pipeline vacancy or incomplete pipeline status. Total Accumulation: It is necessary to reset to zero or set an initial cumulative value, and the unit can be selected from cubic meters/liters, etc. It is recommended to refer to the operation manual of the corresponding model of E+H (such as Promag series major changes) for detailed parameter configuration. Some advanced functions (such as multivariable output and HART protocol settings) require dedicated programmers or software operation.
2. How to adjust parameters of electromagnetic flowmeter
Parameter adjustment of electromagnetic flowmeter needs to be configured according to the model and working conditions of the instrument. The core operations include setting the first number of the instrument system, adjusting the range, and calibrating the signal output.
. 1. Basic parameter settings • Instrument coefficient (K coefficient): Input according to the original coefficient marked on the sensor nameplate, usually the number of pulses per liter (e.g. 1.0000 represents 1L=1 pulse) • Measurement range: Calculated according to the pipeline diameter and flow rate range, the flow rate range of industrial pipelines is generally set to 0.5-10m/s • Flow unit: can choose m ³/h, L/min, kg/h, etc. (mass flow rate requires additional input of medium density) 2 Medium parameter configuration • Conductivity threshold: usu
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