|信息来源： 液位变送器厂家 | 2020-06-03 点击量： 1381|
The combination of differential pressure transmitter and intelligent amplifier board can form intelligent remote pressure and differential pressure transmitter, which can communicate with each other, set and monitor in cooperation with HART protocol manual operator. In order to meet different installation requirements, this series of transmitters have many forms of remote transmission devices for users to choose. The main structure of the transmitter is the same as the differential pressure
The double flange liquid level transmitter can avoid the direct contact between the measured medium and the isolation diaphragm of the transmitter, This measurement method is applicable to the following situations: the tested medium has strong corrosion on the transmitter sensitive elements, and the high-temperature measured medium needs to be separated from the transmitter; 3. There is solid suspension or high viscosity medium in the measured medium, and the measured medium is easy to solidify or crystallize; 5. The measured medium needs to be replaced, and the measuring head needs to be cleaned strictly
One by one, the simulation "on-line operation" assessment shall be carried out to ensure that the transmitter can stably and reliably transmit the profile "remote diaphragm structure under the limit ambient temperature, medium temperature and working pressure (including positive pressure or vacuum), and the diaphragm will not be damaged after overload:; the filling system with full fusion welding and rigid sealing structure will not be selected after long-term operation, A new capillary combination component is designed to eliminate the oil leakage, so that the capillary can be reliably protected. In the field, the remote transmission device with various types, forms and sizes, which is not easy to break, as well as a variety of filling liquid are used, It can meet all kinds of special needs in different occasions, including high temperature, high vacuum, fast response and unequal length capillary (difference ≤ 4.5m) remote differential pressure transmitter
When selecting the type of double flange liquid level transmitter, we should pay special attention to a very important factor, that is, the differential pressure type liquid level transmitter, which is installed at the bottom of the liquid container and reflects the height of the liquid level through the gauge pressure signal. In the control process of liquid level measurement in pharmaceutical and chemical industries, the container containing liquid is often under pressure. At this time, the conventional static pressure liquid level transmitter cannot meet the measurement requirements. Due to the improvement of sensor circuit and structure, the practical value of differential pressure liquid level measurement technology in pharmaceutical and food industries is improved.
Selection of remote differential pressure transmitter remote transmitter is a variant of remote transmitter with remote device attached to the transmitter body, so its selection work is as follows: first, determine the type (DP), measurement range and structural material of the transmitter body, Then according to the site installation requirements, confirm that the device type and parameters of the filling system (such as the working temperature, viscosity of the filling liquid and the length of the capillary) are closely related to the performance index of the transmitter. Therefore, they are included in the selection category of the transmitter main body and are not selected in a separate list