Industrial Automation Digital Pressure Gauge With Remote Communication

Industrial Automation Digital Pressure Gauge With Remote Communication

A pressure gauge is a device used to measure the pressure of fluids (liquids, gases, or steam) and is widely applied in industrial production, energy transmission, medical equipment, and other fields.

The pressure gauge measures pressure by the elastic deformation of the sensitive element (Bourdon tube, diaphragm, or bellows) inside the gauge. The pressure deformation is then transmitted to the pointer through the conversion mechanism in the gauge's movement, causing the pointer to rotate and display the pressure. The pressure can also be converted into mechanical or electrical signals for output.

• Range: The working pressure should be within 1/3 to 2/3 of the range to avoid overpressure or low-precision measurement. For instance, under stable pressure, the maximum working pressure should not exceed 2/3 of the range, and for pulsating pressure, it should not exceed 1/2.
• Accuracy Class: For general industrial applications, 1.6 or 2.5 class can be selected. For laboratory or medical equipment, high-precision gauges with accuracy classes of 0.1 to 0.4 are required.
• Material: Choose based on the characteristics of the medium. For example, stainless steel is suitable for corrosive media, while copper alloys are not suitable for ammonia.
• Environmental Adaptability: Consider factors such as temperature range (-40℃ to 70℃), vibration resistance level (e.g., V.H.4), and protection level (IP65/IP67).

• Medium Characteristics: Diaphragm gauges should be chosen for corrosive media, heat sinks should be added for high-temperature media, and throttling valves should be used for viscous liquids to buffer.
• Functional Requirements: Digital gauges should be selected for remote monitoring, electrical contact gauges for alarm linkage, and Ex-certified gauges for explosion-proof environments.
• Installation Methods: Edgeless gauges should be chosen for direct pipeline installation, gauges with edges for wall installation, and gauges should be matched with structures for embedded installation.

1. Industrial production: Monitoring the pressure of reaction vessels in petrochemicals, controlling the water level of boilers in the power industry, and regulating the pressure of furnace bodies in metallurgy.
2. Energy transmission: Monitoring the pressure of oil and gas pipelines, controlling the flow of heat networks, and high-pressure measurement (0-100MPa) in hydrogen refueling stations.
3. Medical equipment: Regulating the pressure of ventilators, controlling the negative pressure of vacuum blood collection tubes, and calibrating the accuracy of blood gas analyzers.
4. Daily life: Detecting the air pressure of car tires, monitoring the refrigerant pressure of HVAC systems, and providing safety warnings for household gas meters.

• Location Selection: Avoid vibration sources, stay away from high temperatures (install heat dissipation tubes if necessary), be easily observable, and free from electromagnetic interference.
• Direction and Sealing: Install vertically (except for special models), use sealing tape on threaded interfaces, and apply double sealing for corrosive media.
• Buffer Protection: Install dampers or buffer tubes in pulsating pressure scenarios, and install pressure relief valves in high-pressure scenarios.

• Regular Calibration: Once every six months under normal conditions and once every three months in critical safety situations. After calibration, it should be sealed with a lead seal.
• Cleaning and Maintenance: Clear blockages at the interfaces, check if the pointer returns to zero, and prevent moisture and rust in humid environments.
• Safety Inspection: Oil-proof treatment for oxygen gauges, regular inspection of sealing parts for explosion-proof gauges, and immediate replacement if leakage is found.