How to select Magnetic Level Gage
Lining type magnetic flap level gauge, anti-corrosion magnetic flap level gauge
Generally speaking, the factors that users need to consider when selecting models based on application conditions are as follows:
- Measuring medium
Different medium has different temperature, corrosiveness, medium density, medium viscosity, etc., and these properties of the medium have a great influence on the measurement of the magnetic flap level gauge. Therefore, the correct selection of the magnetic flap level gauge according to the characteristics of the measuring medium can avoid the situation of inaccurate measurement, affecting the life of the instrument, or even unusable.
- Measuring range
The measurement range is a very important consideration in choosing a magnetic flap level gauge. If the range error is large, it will have a direct impact on the measurement effect.
If the specific range cannot be confirmed at the time of purchase, the arbitrarily determined range may lead to inability to install, or the installation position can be adjusted to meet the requirements of the working conditions.
Therefore, in order to avoid unnecessary troubles caused by later construction and installation, it is necessary to confirm the measurement range when purchasing. If the tank has not been opened, you can communicate with the sales engineer directly; if the tank has been opened, you need to inform the sales engineer of the center distance of the opening.
Generally speaking, the range of the stainless steel magnetic flap level gauge is between 200mm and 6000mm, and those exceeding 6000mm need to be manufactured in sections to meet the requirements; the maximum range of anti-corrosion PP/PVC materials is 4000mm. Manufactured in sections.
- Measure the pressure
Measuring pressure is related to the safety of on-site staff, and everyone has always attached great importance to measuring pressure. Generally speaking, when the measured pressure exceeds 16MPa, an explosion-proof magnetic flap level gauge must be selected.
- Working temperature
At normal temperature, the magnetic flap level gauges produced by regular manufacturers can generally be used. However, some special media, such as liquid carbon dioxide, are liquid at normal pressure below -78.5°C, but gaseous at normal temperature, so they cannot be measured at normal temperature. To achieve the measurement of liquid carbon dioxide, it is necessary to choose a frost-proof magnetic flap level gauge.
In addition, in the case of high temperature, stable measurement can be achieved due to the need to dissipate heat from the liquid in the conduit. Because the working temperature of the site has a great influence on the measurement of the instrument, the working temperature is also a very important parameter when selecting a model.
- Whether it is necessary to output signals, control contacts, etc.
According to the characteristics of on-site working conditions, see if it is necessary to output signals and control contacts. According to the actual working conditions, choose 4~20mA, 4~20mA+HATR, 1~5VDC, 485, etc. The control contacts such as pump start, high and low alarms, etc., can also be used in conjunction with DCS and PLC.
- Explosion-proof requirements
In petrochemical and other flammable and explosive occasions, it is very dangerous if the magnetic switch or remote transmitter matched with the magnetic flap level gauge does not have explosion-proof function, so it is very dangerous to use it in flammable and explosive occasions. Type magnetic flap level gauge.
- Other considerations
In addition to the above aspects, when selecting the type of the magnetic flap level gauge, it is also necessary to consider whether the site conditions require special installation methods, sewage, exhaust, heat preservation, heat tracing, etc.
In short, in order to select the correct type, it is necessary to carefully compare the selection table of the magnetic flap level gauge to be selected after understanding the specific application conditions, combined with its own working conditions, to see whether its parameters match its own working conditions. . If you don’t know how to choose the model in the actual selection process, you can consult the manufacturer at any time, and through in-depth communication, you can purchase a magnetic flap level gauge that matches the working conditions.