Rosemount pressure transmitter's principle and characteristics

Features of rosemount pressure transmitter

1. The measured medium is widely used, which can measure oil, water and paste compatible with 316 stainless steel and 304 stainless steel, and has certain anti-corrosion ability.

2. High accuracy, high stability, imported original sensor, good linearity and high temperature stability.

3. Small volume, light weight, convenient installation, commissioning and use.

4. Stainless steel fully enclosed shell, good waterproof.

5. The pressure sensor directly senses the measured liquid level pressure and is not affected by medium foaming and deposition.

Principle of emerson rosemount 3051

The mechanical signal of water pressure is transformed into an electronic signal such as current (4-20mA). The pressure has a linear relationship with the voltage or current, which is generally proportional. Therefore, the output voltage or current of the transmitter increases with the increase of pressure, so a relationship between pressure and voltage or current is obtained.

The two pressures of the measured medium of the pressure transmitter are connected to the high and low pressure chambers. The pressure of the low pressure chamber adopts atmospheric pressure or vacuum, acting on φ On the isolation diaphragm on both sides of the element (i.e. the sensitive element), the filling liquid in the element is transmitted to both sides of the measuring diaphragm through the isolation diaphragm and the element. The pressure transmitter is a capacitor composed of measuring diaphragm and electrodes on insulating sheets on both sides. When the pressures on both sides are inconsistent, the measuring diaphragm will be displaced, and its displacement is directly proportional to the pressure difference. Therefore, the capacitance on both sides is unequal, which is converted into a signal directly proportional to the pressure through oscillation and demodulation links.