
YEJ-101 diaphragm pressure gauge
YEJ-101 diaphragm pressure gauge designed for measuring low positive and negative air pressure
Suitable for non-corrosive and non-explosive gas applications
Provides accurate and stable pressure measurement
Ideal for ventilation systems and boiler equipment
Reliable performance for industrial and commercial use
Application

Boiler Ventilation Systems

Airflow Monitoring Equipment

Industrial Gas Pressure Measurement

HVAC & Ventilation Systems

Industrial Process Equipment
Description

The YEJ-101 Rectangular Diaphragm Pressure Gauge is a mechanical pressure instrument designed for measuring low, micro, and negative pressures. It uses a diaphragm capsule as the pressure-sensitive element. When the measured gas enters the pressure connection, changes in pressure cause the diaphragm capsule to deform, and the resulting displacement is transmitted through the internal mechanism to the pointer for direct pressure indication. Compared with conventional pressure gauges, this design is better suited for measuring relatively low gas pressures.
The YEJ-101 features a compact rectangular case design and is suitable for pressure monitoring in boiler ventilation systems, air ducts, and other gas pressure applications. It is primarily intended for measuring neutral gases that are non-corrosive to copper alloys and present no explosion hazard. Depending on the application, different ranges can be selected for positive pressure, negative pressure, or combined pressure/vacuum measurement. With a standard accuracy class of 2.5, the gauge is suitable for low-pressure gas indication in industrial applications.
Features




Technical Details
Model
Pressure Range
Elastic Element
Accuracy Class
Permissible Vibration
Insensitive Error
Operating Temperature
Weight
Pressure Connection
Accessories
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