Absolute Gauge Low Price Smart 4-20mA China Pressure Transmitter

PRODUCT INTRODUCTION

What is pressure transmitter?
It is a mechanical device that measures the expansive force of a liquid or gaseous sample. As well as being referred to as a pressure transducer, this type of sensor consists of a surface area that is sensitive to pressure. It can be constructed of steel, silicon, or other materials based on the analyte.

Pressure Transmitter Working Principle
In short, china pressure transmitters transform mechanical pressure into an analog electrical signal by detecting voltage variations. This is achieved through the diaphragm, which reacts to pressure changes by expanding or compressing and altering the resistance value. The resulting value is then transmitted as an electrical signal. Pressure transmitters can be utilized to alert users of any necessary attention when there is a significant shift in pressure.
 

Our digital temperature sensors provide the high accuracy, low power consumption and ease-of-use required for any temperature sensing application, while taking up the smallest packaging footprint. Offering a variety of interface options, our digital temperature sensors integrate seamlessly into your design.

Features

Are more accurate, linear and stable than thermocouples
Does not require cold junction compensation, like thermocouples do
Extension wires can be copper wires
More expensive than thermocouples
Need a known excitation current suitable for the sensor type
More fragile
Shortly, you can say that thermocouples are more suitable for high-temperature applications and PRTs for applications that require better accuracy.

Types of Pressure Transmitters
In almost all industrial applications, standard pressure transmitters are compact, universal devices that measure pressure ranges.
In light of their ability to measure level and their working principle, hydrostatic pressure transmitters are sometimes referred to as level transmitters. It is based on the principle that the amount of pressure increases with depth. These devices are submersible and are suitable for both liquids and gases.
Absolute pressure transmitters – used in cases when the pressure of gases or liquid is isolated from changes in atmospheric pressure. These pressure transmitters would be used when pressure that is being measured is not affected by any changes (such as temperature).
A differential pressure transmitter measures the difference between two pressures using two sensory diaphragms. A differential pressure transmitter produces an output signal based on a calibrated pressure range. It is very common to use these devices for monitoring industrial processes.