YEJ-121 Rectangular Contact Membrane Box Pressure Gauge

1、 Overview of YEJ-121 Rectangular Contact Membrane Box Pressure Gauge
The YEJ-121 rectangular contact membrane box pressure gauge is suitable for measuring micro pressure and negative pressure of gases in boiler ventilation equipment that do not corrode copper alloys or have neutral and non explosive hazards, and has a dual two position adjustment (dual limit signaling) function to achieve positional adjustment or over limit alarm.
2、 Main indicators of YEJ-121 rectangular contact membrane box pressure gauge
1. Accuracy level: 2.5
2. Environmental conditions for use: 0~50 ℃, relative humidity not exceeding 85%, and vibration and rapid pulsation of the measured medium should not have a significant impact on the normal operation of the instrument.
3. Weight: 2.5kg
4. Setting error: less than 2.5% of the full range
5. Position output contact capacity: AC non inductive load 3A 220V
6. Working power supply: AC 220V
7. Power consumption: less than 5W
8. Pressure interface: φ 8 (equipped with a hose with an inner diameter of φ 6)
3、 YEJ-121 Rectangular Contact Membrane Box Pressure Gauge Measurement Range

positive pressure	negative pressure	Positive and negative pressure
0~250 0~400 0~600 0~1000 0~1600 0~2500 0~4000 0~6000 0~10000 0~16000 0~25000 0~40000	-250~0 -400~0 -600~0 -1000~0 -1600~0 -2500~0 -4000~0 -6000~0 -10000~0 -16000~0 -25000~0 -40000~0	-120~+120 -200~+200 -300~+300 -500~+500 -800~+800 -1200~+1200 -2000~+2000 -3000~-+3000 -5000~-+5000 -8000~+8000 -12000~+12000 -20000~+20000

4YEJ-121 Rectangular Contact Membrane Box Pressure GaugeExternal dimensions