
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
This pressure gauge is suitable for measuring micro-pressure and negative pressure of neutral gases that do not corrode copper alloys and have no explosion risk.
Common applications include:
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Boiler ventilation systems
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Airflow monitoring equipment
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Industrial gas pressure measurement
Description
The YEJ-101 diaphragm pressure gauge operates using a corrugated diaphragm capsule made of tin-phosphor bronze. When the measured gas enters the diaphragm through a connecting tube, it causes displacement at the free end of the diaphragm. This movement is transmitted through an internal mechanism, driving the pointer to indicate the corresponding pressure value on the dial.
Features
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Suitable for low pressure and negative pressure measurement
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High sensitivity diaphragm structure
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Stable performance in vibration environments
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Compact and durable design
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Easy installation with hose connection
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Customizable accuracy level (1.6 class available)
Technical Details
Model
YEJ-101
Pressure Range
Pa (Pascal)
Elastic Element
Tin-phosphor bronze diaphragm
Accuracy Class
2.5 (±2.5% of full scale) Optional 1.6 class available upon request (additional cost applies)
Permissible Vibration
Frequency: ≤25Hz Amplitude: ≤0.1mm
Insensitive Error
≤5% of measurement range
Operating Temperature
0–50°C
Weight
Approx. 1.6 kg
Pressure Connection
Φ8 (compatible with 8mm inner diameter hose)





















