German eH mass flowmeter | e ➕ Calibration method for h-mass flowmeter

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How to use the E+H mass flowmeter simulation? The core of using the E+H mass flowmeter for simulation is to simulate and test the output response of the flowmeter under different working conditions through its built-in Cai Fan Ma Tong single function or external programming. 1. Prior to preparation and basic setup operations, it is necessary to read the specific models operating manual. After power on, basic settings can be made through the buttons on the on-site display panel: • Unit setting: Enter the function menu and set the display units for instantaneous flow and cumulative flow (such as kg/h, t). Range setting: In the "CURRENT OUTPUT" menu, set the flow range value corresponding to the 4-20mA analog output, which needs to be completely consistent with the configuration of the upper computer (such as PLC, DCS). • Process parameter setting: Enable the LOW FLOW CUT OFF function, usually set to 1% -5% of the range, to ignore small flow fluctuations; Simultaneously enable the air traffic control detection (EPD) function

2. Simulation operation mode E+H mass flowmeter itself does not provide an independent mode called "simulation", but its debugging function can achieve simulation. Quick debugging: Using the "Quick Settings" menu, it is easy to set language, measurement variables, units, etc., and perform zero calibration and other operations, which itself is a simulation and verification of instrument behavior. • Analog output testing: By setting a fixed current output value (e.g. forcing output of 12mA), a specific flow rate value can be simulated to test whether the upper computer system is receiving and displaying normally.

3. Through external programming simulation, this is a more advanced and flexi

ble simulation method suitable for system development and testing. -You can write programs (such as using Python, C #, or PLC programming languages) to simulate the behavior of flow meters. The code can periodically (such as every second) send simulated traffic data to the upper computer. -A simple example is to use a random number tensor generator to generate fluctuating data within a set range to simulate real flow changes. You can also write code to simulate the output of specific fault codes to test the alarm and processing logic of the system. If any abnormalities occur during the simulation debugging process, the instruments self diagnostic function should be activated, and the diagnostic information list should be consulted to troubleshoot the problem according to the prompted fault codes (such as hardware errors, measurement values exceeding limits, etc.).

2.e ➕ The calibration methods for E+H mass flow meters mainly include coefficient correction method, K value adjustment method, and following general calibration steps. They need to be operated by professionals using reliable equipment and recorded in detail. 1. Coefficient correction method: Based on the data analysis results, use the calibration software of E+H mass flowmeter or input the calculated coefficient correction value through the parameter setting interface. Some models can directly adjust the coefficient on the display screen. After completing the adjustment, it is necessary to conduct measurement verification again to ensure that the accuracy meets expectations. If the error is still large, repeat the above steps.

2. The K-value adjustment method online calibration method is suitable for situations where high accuracy is required and

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