German EPRO transmitter module eddy current converter

GermanyEPRO transmitterImported parts in stock

The function of a transmitter is to detect process parameters and transmit the measured values in a specific signal form, so that they can be displayed and adjusted in advance. The function of the automatic detection and adjustment system is to convert various process parameters such as temperature, pressure, flow rate, liquid level, composition and other physical quantities into unified standard signals, and then transmit them to the regulator and indicator recorder. Pre adjustment, indication and recording are required before entering the system.
The selection of transmitters is usually considered based on installation conditions, environmental conditions, instrument performance, economy, and application media. In practical application, it is divided into direct measurement and indirect measurement; Its uses include process measurement, process control, and device interlocking. Common transmitters include ordinary pressure transmitters, differential pressure transmitters, single flange transmitters, double flange transmitters, plug-in * first * first * first * first in type flange transmitters, etc.
Pressure transmitters and differential pressure transmitters measure pressure and the difference between two pressures, but they indirectly measure many parameters. Like a pressure transmitter, in addition to measuring pressure, it can also measure the liquid level inside the equipment. When measuring liquid level in atmospheric pressure vessels, a pressure transformer is required. When measuring the liquid level of a pressurized container, two pressure transformers can be used, namely one for measuring the lower limit and one for measuring the upper limit. Their output signals can be input into the pre * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *. It can also be used to measure the density of a medium while keeping the liquid level and pressure values constant inside the container. The measurement range of pressure transmitters can be very wide, starting from zero absolute pressure and up to 100MPa (in general).

German EPRO transmitter imported parts in stock

During the installation of common faults, the axial direction of the pressure sensitive part of the transmitter shall be perpendicular to the gravity direction. If the installation conditions are limited, the zero position of the transmitter shall be adjusted to the standard value after installation and fixation. The remaining pressure cannot be released, so the sensor zero position cannot be lowered. The * method to eliminate this cause is to remove the sensor and directly check if the zero position is normal. If it is normal, replace the sealing ring and try again. The output of the pressure transmitter does not change, and if the output of the pressure transmitter suddenly changes, the zero position of the pressure relief transmitter cannot return. The most likely cause of this phenomenon is the sealing ring of the pressure sensor. Whether it meets the power supply requirements; Is there any wiring error between the power supply, transmitter, and load device? If there is no voltage or polarity reversal on the transmitter terminal, it can cause the transmitter to output no voltage signal.
The casing of pressure sensors and transmitters generally needs to be grounded, and signal cables should not be mixed with power cables. Strong electromagnetic interference should be avoided around sensors and transmitters. Sensors and transmitters should be pre calibrated according to industry regulations before use. When selecting pressure sensors and transmitters, users should fully understand the working conditions of the pressure measurement system, make reasonable choices according to their needs, and ensure that the system works in a * state, which can reduce project costs.
Transfer the filling liquid inside the isolation sheet and component to both sides of the measuring membrane. Measure the electrodes on both sides of the diaphragm and insulating film to form a capacitor. The pressure transmitter is required to be inspected once a week and once a month, mainly to remove dust from the instrument, carefully check the electrical components, and regularly calibrate the output current value. The pressure transmitter has weak electricity inside and must be isolated from external strong electricity.

GermanyEPRO transmitterImported parts in stock

No matter how conventional transmitters improve accuracy, they still cannot overcome their inherent working characteristics, and errors are inevitable. The rapid development of computer technology provides broad prospects for the research and production of high-performance transmitters. The single-chip AC sampling transmitter has high cost-effectiveness, high accuracy, stable and reliable operation, and does not require frequent calibration.
The single-chip AC sampling transmitter has the following characteristics.
(1) Sampling period and timing
1) In the case where the high-order harmonic components are not large in the power grid, the sampling period can be selected as low rate methods such as 8 times and 12 times, which have lower requirements for microcontrollers and their equipment and are also simple for data processing; If the high-order harmonic components in the power grid are large, it is necessary to increase the sampling rate.
2) The timing of sampling, especially in low rate sampling methods, if the sampling timing happens to be at the peak valley point of high-order harmonics, it will have a significant impact on accuracy. Therefore, within the allowable range of devices and technology, the sampling frequency should be increased as much as possible to suppress the interference impact in the power grid.
(2) The single-chip AC sampling transmitter for iron core nonlinear compensation can achieve segmented nonlinear compensation of the iron core. According to the accuracy requirements and the characteristics of the iron core itself, there is a corresponding compensation curve for each iron core, and segmented compensation can be achieved.
(3) The compensation of the hysteresis angle of the iron core becomes very simple due to the storage function of the microcontroller. Before entering the iron core, it is necessary to measure the hysteresis angle first, and then store the hysteresis angle of each iron core in the first place. First, enter the microcontroller and perform phase shift processing through the program. This compensation can be idealized.