Sensors and transmitters play a crucial role in the fields of instruments, meters, and industrial automation. Unlike sensors, transmitters not only convert non electricity into measurable electricity, but also generally have a certain amplification effect.

How to choose a pressure transmitter:

Determine the measurement medium

Based on the degree of corrosion of the measuring medium, choose the corresponding transmitter according to the degree of corrosion. Generally speaking, transmitters with stainless steel as the isolation unit can be used for non strong acids and strong alkalis. Otherwise, only specially designed transmitters such as titanium alloys designed for corrosion prevention can be selected.

Secondly, it is necessary to check whether the measuring medium is viscous and clean. If it is very viscous (such as slow flow), a transmitter with a hard isolation unit needs to be selected

Determine the measurement range and measurement method

When selecting a measurement range, it is generally necessary to consider the actual measurement range, overvoltage measurement range, and choose the range with the largest measurement range, while also considering the size of the overvoltage measurement range.

In addition, it is necessary to choose the correct measurement method. If measuring differential pressure, a differential pressure transmitter must be selected

Determine accuracy range, compensate temperature range, and use temperature range

Based on the minimum precision you need to measure, generally choose products with slightly higher precision than the required minimum precision.

When selecting, long-term stability indicators should also be considered

The so-called compensation temperature range refers to the temperature range of the measured medium during normal operation, and the operating temperature range refers to the maximum temperature range that may occur during use. Generally, the selected temperature range is slightly larger than the required temperature range

Determine pressure interface, electrical interface, mechanical dimensions, etc

Determine whether explosion protection, electromagnetic interference prevention, and environmental indicators for shell waterproofing are required