SCG Differential Pressure Gauge  for high accuracy--guaranteed within 2% of full scale--and for the wide choice of 81 models available to suit your needs precisely. Using SENCON's simple gauge,it quickly indicates low air or non-corrosive gas pressures--either positive, negative (vacuum) or differential. The design resists shock, vibration and over-pressures. No manometer fluid to evaporate, freeze or cause toxic or leveling problems. It's inexpensive, too. The  gage is the industry standard to measure fan and blower pressures, filter resistance, air velocity, furnace draft, pressure drop across orifice plates, liquid levels with bubbler systems and pressures in fluid amplifier or fluidic systems. It also checks gas-air ratio controls and automatic valves, and monitors blood and respiratory pressures in medical care equipment. Note: May be used with Hydrogen. When ordering a Buna-N diaphragm pressures must be less than 35 psi.  

1.Automatic Reset Pressure switch designed. 2.Wide range of pressure settings & meet a board variety of application. 3.Used: Pressure controlling of Air, Water, Internal wiring of electric refrigerating equipment or room cooler units or remote outdoor condensing units for domestic cooling systems.  4.Typical Applications: safety controls / air conditioning / refrigeration. Model XYK-117  Media  Air, Water, motor oils, transmission oils, Hydrocarbon Media,  Refrigeration fluid  Pressure Set Point  actuation from 0.2 to 20 Bar  Max Operating Pressure 25 Bar for actuation up to 10 Bar 35 Bar for actuation from 10-20 Bar    Proof Pressure 35 Bar for actuation up to 10 Bar 55 Bar for actuation from 10-20 Bar    Operating Temperature Range -30? C to ~ 80? C  Switch Type Direct action, blade contact, SPST NC, NO  Electric Rating 120/240VAC, 375VA  24VAC/DC, 2A  Dielectric Strength 750 Vrms across open contacts1550 Vrms terminals to fitting  Terminals  1/4? blade  Life at Related Load  100,000 cycles Connection 1/8NPT, G1/8", 1/4NPT, G1/4"  Options various connector thread sizes