Diaphragm Pressure Gauge: A system consisting of a diaphragm isolator and a general-purpose pressure gauge. The diaphragm pressure gauge is primarily connected to equipment through threaded connections, flange connections, and sanitary clamp connections. The gauge is suitable for measuring the pressure of media that are highly corrosive, high temperature, high viscosity, prone to crystallization and solid deposition, as well as in situations where it is necessary to prevent the direct entry of the media into general-purpose pressure gauges and to avoid sediment accumulation, which is also easy to clean.

Diaphragm Pressure Gauge: Suitable for measuring the pressure of liquids, gases, or steam that are non-explosive, non-crystallizing, non-caking, have a high viscosity, and are non-corrosive to copper and copper alloys.

1. Difference in Working Principles:

Diaphragm Pressure Gauge: During pressure measurement, the medium directly acts on the diaphragm, generating a vertical and upward pressure. This pressure causes the diaphragm to deform, compressing space and prompting the filled liquid in the spring tube to transfer the medium pressure to the spring tube. This results in elastic deformation at the end of the spring tube, which, through a linkage mechanism, drives the core gear shaft to rotate. The pointer then indicates the measured pressure value on the scale disk.

Diaphragm Pressure Gauge: Under pressure, the medium being measured directly acts on the elastic diaphragm, causing it to deform upwards (indicating positive pressure) or downwards (indicating negative pressure). This deformation drives the core gear shaft via a lever mechanism fixed at the center of the diaphragm, thereby moving the pointer to indicate the measured pressure value on the scale.

2. Different types of elastic elements

Diaphragm Pressure Gauge: The elastic element is a spring tube, while the diaphragm merely serves as an isolation function.

Diaphragm Pressure Gauge: The elastic element of a diaphragm pressure gauge is a corrugated diaphragm. The measured pressure acts on the diaphragm, causing it to deform elastically upwards (or downwards), which is then indicated by a linkage mechanism welded to the diaphragm.

3. Different accuracy grades

Diaphragm Pressure Gauge: Generally, the accuracy grade is 1 or 6.

Diaphragm Pressure Gauge: Accuracy Class 2 and 5.