Working principle and structure of digital pressure gauge

1. Working principle Power supply part: (AC 220V through the switch circuit, converted into) the required DC voltage, and then supply the required circuit through the voltage regulator circuit, or (24V) DC voltage directly supplies the required circuit through the voltage regulator circuit. Signal part: The pressure of the measured medium is transmitted to the pressure-sensitive diaphragm of the sensor through the pressure interface. The sensor amplifies and converts the electrical signal to V/A, and sends it to the CPU for processing, setting and displaying numbers, controlling the switch output, and providing Analog or digital output to realize the process of pressure display, control and transmission. 2. Principle and structure The digital pressure gauge combines the world's leading microprocessor technology and advanced analog-to-digital conversion algorithm to meet the requirements of high precision and low power consumption. Large-screen LCD technology and unique background light technology make the data clear and easy to read at night. Using imported chips, the instrument data collection, memory, and measurement maintain the highest value, and manually return to zero. The shell is fully sealed with stainless steel, which is resistant to corrosion and vibration, and can be used in a variety of complex environments. 3. Principle-related features Pen induction zero adjustment ◆ The liquid crystal display has the function of dynamic pressure value display, which can directly display the pressure percentage. Peak recording function (optional); ◆ Various additional functions. Such as RS486 interface output, 4-20mA output, 0~5V output, data instant messaging output USB interface, storage function (optional); ◆ Power supply: built-in one AA lithium battery can be used for 5~7 years; or rechargeable Lithium battery (including charger); or AC 220V power supply

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