Liquid Filled Pressure Gauge Achieves Precise Measurement In Harsh Environments

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Snowate

Hebei, China

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One unique kind of pressure gauge is the liquid-filled model. It can deliver accurate readings even in challenging working situations because it is loaded with a specific amount of damping fluid (silicone oil or glycerin) inside the casing to suppress any vibration or shaking that can impair the reading accuracy. In the interim, it can also preserve system dependability and safety while shielding equipment from harm brought on by pressure changes. By keeping an eye on the liquid-filled pressure gauge, operators may save maintenance expenses, optimize water treatment procedures, and react quickly to pressure anomalies.

Operational Concept:

Diagram of the working principle of a pressure gauge with comments. The pressure inside the Bourdon tube will force the tube wall to distort when the pressure from the tested system is transferred to it via the pressure gauge's interface. Typically, the pointer mechanism is attached to one closed end of the Bourdon tube. The closed end of the Bourdon tube will cause displacement when it deforms. Through the use of a mechanical linkage system that includes a sector gear and a rack, the displacement is transformed into the rotational motion of the pointer. The pointer then points to a particular value on the dial that indicates the pressure inside the Bourdon tube.

Structure

Diagram of the structure of a pressure gauge with comments

Press the dial. To visually read data, a circular disk with several pressure unit scales is frequently used in conjunction with a pointer.

A hint. The dial that shows the pressure reading is fixed above and is linked to the sector gear chain.

Bourdon tube. The C-shaped or spiral metal tube serves as the foundation for monitoring pressure changes by converting the recorded pressure into deformation inside the Bourdon tube.

Last component. the Bourdon tube's free end that is attached to the transmission mechanism. The maximum displacement is produced by the free end of the Bourdon tube when its internal pressure varies.

Link. It links the Bourdon tube's free end to the pointer mechanism, allowing the pointer to rotate in response to even slight bending of the tube.

Rack and sector gear. The rack amplifies linear motion and transforms it into rotating motion of the pointer by meshing with the sector gear and connecting to the free end of the Bourdon tube.

Stem with pressure connector. It permits pressure to be transferred from the connection point to the Bourdon tube, supports the connection joint, and connects the pressure gauge to the pressure source.

                                                            Nominal diameter
                                                            φ40
                                                        
                                                            Accuracy grade
                                                            2.5
                                                        
                                                            Interface size
                                                            G1/8", ZG1/8", Z1/8", ZG1/4", φ4", φ6", M10×1
                                                        
                                                            Ambient temperature
                                                            20±5 °C
                                                        
                                                            Pressure range
                                                            -0.1 MPa, 0.16 MPa, 0.4 MPa, 0.6 MPa, 0.7 MPa, 1 MPa, 1.6 MPa, 2.5 MPa, 3 MPa, 4 MPa, 6 MPa, 10 MPa
                                                        
                                                            Media temperature
                                                            - 40°C to 70°C
                                                        
                                                            Pressure sensing element
                                                            Bourdon tube
                                                        
                                                            Instrument glass
                                                            PC
                                                        
                                                            Wetted material
                                                            copper plated nickel (common), stainless steel, brass
                                                        
                                                            Case material
                                                            SS304, SS316
                                                        
                                                            Instrument pointer (material)
                                                            aluminum
                                                        
                                                            Movement material
                                                            main body copper
                                                        
                                                            Protection level
                                                            V.H.3

Characteristics of Pressure Gauge
Precision.
It offers precise pressure readings to keep the system operating safely.
Readability.
Its easy-to-read dial and markings make readings simple to discern.
Resilience.
Typically, it is made to be strong and resilient to changes in pressure as well as challenging conditions.
Broad Measurement Range.
To fulfill the needs of varied applications, it covers a range of measuring pressures, from low pressure to high pressure.
Available Materials for Selection.
To accommodate a variety of working conditions, the pressure gauge's casing material options include plastic and stainless steel.
Multiple Interfaces.
It is possible to offer multiple interface sizes to support various system configurations.