Technical specifications of high-precision vacuum pressure switch

The technical indicators of high-precision vacuum pressure switches mainly include the following aspects:

Pressure range and accuracy:

High-precision vacuum pressure switches usually have a wide pressure measurement range, such as 0 to -100 kpa or even wider, to meet the requirements of different vacuum environments.

The accuracy grade is a key indicator for measuring the accuracy of a switch. The accuracy grade of high-precision vacuum pressure switches is usually high, such as ±0.2% below the full scale, to ensure the accuracy of the measurement results.

Response time and repeatability

Response time refers to the time required for a switch to output the corresponding signal from detecting pressure changes. The response time of high-precision vacuum pressure switches is usually short, such as less than 2.5ms, to respond quickly to pressure changes.

Repeatability refers to the degree of difference in the results obtained from multiple measurements under the same working conditions. The repeatability error of high-precision vacuum pressure switches is usually small, such as ±0.2%F.S. Below, ensure the stability of the measurement results.

Output signal and electrical characteristics:

High-precision vacuum pressure switches typically offer a variety of output signal types, such as NPN or PNP collector open output, analog voltage output (such as 1 to 5V), or analog current output (such as 4 to 20mA), to meet the requirements of different control systems.

In terms of electrical characteristics, parameters such as the load current, applied voltage, and residual voltage of the switch must all comply with relevant standards to ensure a stable and reliable electrical connection.

Environmental adaptability

High-precision vacuum pressure switches need to have good environmental adaptability, including temperature range (such as -10 to 60℃), humidity range (such as 35% to 85%RH), as well as vibration and shock resistance, to adapt to various harsh working environments.

The protection grade (such as IP65) and explosion-proof grade (such as Ex de IIC T6) are also important indicators for measuring the environmental adaptability of switches.

Structure and Installation

High-precision vacuum pressure switches usually adopt a compact and durable structural design, which is convenient for installation and maintenance.

The installation methods are flexible and diverse, such as using British standard pipe thread quick couplings or copper pipe welding installation structures, to meet the connection requirements of different pipelines and equipment.

Function and Protection:

High-precision vacuum pressure switches may have multiple functions, such as reverse control, delay control, leakage pressure protection, password protection, etc., to meet the requirements of different application scenarios.

In terms of protective measures, the switch may be equipped with functions such as short-circuit protection and overload protection to enhance the safety and reliability of the equipment.