Single flange differential pressure transmitter, flange direct mounted differential pressure density measuring instrument is the most commonly used liquid level detection instrument in industrial process control, which is widely used in various automatic control systems, such as aerospace, military, petrochemical, Chemical, oil wells, electric power, ships, building materials, pipelines and many other industries. Generally used in liquid level or differential pressure / pressure measurement.
improving thermal control stability Features
When the measured medium is drawn out by a pressure tube, it is easy to solidify or crystallize;
The measured medium contains suspended solids or is too viscous, which is easy to block the pressure pipe;
The temperature of the measured medium is too high or corrosive, which is not conducive to direct measurement;
The measured medium is food or other medium that needs to maintain hygienic conditions and cannot be contaminated
how to Judge whether the single flange differential pressure transmitter and the flange differential pressure density meter are accurately measured ?
a. Close the single flange differential pressure transmitter, install the positive and negative pressure measurement chambers of the three-valve group of the differential pressure density measuring instrument directly on the flange, open the balance valve and the vent plug of the instrument, at this time the output of the instrument should be lower than 4mA. The signal output is not less than 4mA, it may be that the lead of the positive pressure chamber or the three-valve group is somewhat blocked.
b. Close the pressure point of the positive pressure chamber and open the open-air switch. At this time, the output should be 4mA. If the output is lower than 4mA, it may be that the migration amount is small or the zero position is low. If the spacer fluid is filled, it may be that the spacer fluid is not filled or leaked from the side. If the output is higher than 4mA, it means that the migration amount is larger or the
The H of flange differential pressure transmitter & density meter
In fact, formally speaking, we need to change the literal h into H, which is actually the abbreviation of English Highvoltage (high voltage), which actually represents The high-pressure end of the single flange differential pressure transmitter and the flange directly mounted differential pressure density measuring instrument can be seen from the above picture correspondingly. The single flange differential pressure transmitter and the flange direct mounted differential pressure density measuring instrument are marked with H is the high voltage side.
The L of flange differential pressure transmitter & density meter
The single-head differential pressure transmitter, the flange directly mounted differential pressure density measuring instrument l, is the letter L. This L is actually the abbreviation of English Lowvoltage (low voltage), which actually represents the single-head differential pressure transmitter. The low-pressure side of the flange-mounted differential pressure density measuring instrument corresponds to the single-head flange differential pressure transmitter from the figure above. The flange-mounted differential pressure density measuring instrument marked with L is the low-pressure side.
In short, the single flange differential pressure transmitter and the flange direct-mounted differential pressure density measuring instrument have a high pressure end and a low pressure side. The single flange differential pressure transmitter and the flange direct mounted differential pressure density measuring instrument have H represents the high pressure side, the single flange differential pressure transmitter, and the L on the flange direct-mounted differential pressure density measuring instrument represent the low pressure side. Because the high-voltage side and the low-voltage side cannot be installed incorrectly, otherwise it will cause failure, so H is marked on the high-voltage side, and L is marked on the low-voltage side, so we install a single flange differential pressure transmitter, and the flange is directly mounted. When it comes to differential pressure density measuring instruments, you can’t go wrong.
FAQ
Q: Only the single flange differential pressure transmitter and the flange direct-mounted differential pressure density measuring instrument will mark h and l?
A: Usually, as long as the instrument has low-voltage and high-voltage end interfaces, it will be marked with a similar mark, which is designed to be less error-prone.
Q: In the single flange differential pressure transmitter, the flange direct-mounted differential pressure density measuring instrument is marked in uppercase or lowercase
A: Usually, capital letters are identified, because lowercase letters are prone to errors, and there is also a convention that abbreviations are replaced by capital letters.
