YEJ-121 Type Rectangular Contact Membrane Box Pressure GaugeDetailed product description：

Usage description:
The YEJ-121 rectangular contact membrane box pressure gauge is suitable for measuring micro pressure and negative pressure of neutral and non explosive gases that do not corrode copper alloys in boiler ventilation equipment, and has a dual two position adjustment (dual limit signaling) function to achieve positional adjustment or over limit alarm.
Main technical indicators:
Accuracy level: 2.5
Environmental conditions for use: -20~60 ℃ (0-50 ℃ for YEJ-121 type), 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.

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

Weight: 2kg (Type 101), 2.5kg (Type 121)
Electrical specifications: (YEJ-121 type)
Setting error: less than 2.5% of the full range
Position output contact capacity: AC non inductive load 3A 220V
Working power supply: AC 220V
Power consumption: less than 5W
Pressure interface: φ 8 (equipped with a hose with an inner diameter of φ 6)

Overall dimensions:

	Type 101	121 type
L	one hundred and sixty	two hundred and fifty