differential pressure gage的用法和样例：
- fluid differential pressure gage
- How to connect and prepare Differential Pressure Gauge (refer to drawing included with Differential Gauge instructions).
- The presentation of usage of liquid column manometer. The correct-use method and error correction of U-tube manometer and double tube differential pressure gauge were analysed.
- Differential pressure gauges is used to test the pressure difference between two points, it is a mechanical pressure gauge that can directly indicate the pressure difference on the instrument meter.
- Gage pressure is a special case of differential pressure.
- Aphragm type differential pressure gauge