UE压力开关J400-156J400-164（US UE pressure switch J400-156 J400-164 ）

US UE pressure switch J400-126 J400-134 J400-137 J400-144 J400-146 J400-156 J400-164 application  400    series pressure switch is a multi-purpose series switch, especially suitable for multi-point output and control. Two-point and three-point settings provide multi-point output, which can be used for alarm and shutdown, early warning and alarm, high/low limit and liquid level control functions.  All-weather series switches have a variety of micro switches and a variety of process interface options, so that the 400 series switches can meet various needs.  Due to its own characteristics, the 400 series is widely used in protection and control, industrial process equipment and pumps, steam turbines, compressors, pulp and paper, water and sewage treatment and other industries   . There are many choices of pressure components and materials   . Setting There is a reference scale or hexagonal screw adjustment   . FM certification   . Adjustable range Pressure: 30″Hg Vac to 6000psi (-1 to 413.7bar)  Technical parameters      Storage temperature -54～71℃     Ambient temperature -40～71℃ Ambient temperature per The typical drift of the set point does not exceed 1% for a change of 28°C. Set     point repeatability: 　pressure switch type 126-376, type 520-535: ±1% within the adjustable range; 　type 440-559: ±1% within the adjustable range 0.5% 　610-614 type: ±1.5% within the adjustable range     Shock resistance, 15G, 10 millisecond cycle test. Reproducible set point     vibration resistance. 2.5G, 5～500HZ vibration test, reproducible set point     Shell die-casting aluminum alloy, with epoxy resin coating. Gasket sealing. Clamping screw      shell protection level plus option M900 can meet NEMA4X.IP65 requirements (waterproof electrical interface)  switch output One, two or three single pole double throw (SPDT ) output. It can be set separately in      the whole range. 531-534 type is 50%; 520, 525, 535 type is 30%; . 125/250/480 VAC      Weight Approx. 3-7.5 lbs      Electrical Connections Three 7/8" Diameter Punched      Pressure Connection Ports 1/4" NPTF; Models S126B-S164B. Models 520-535; 1/2" NPTF  temperature switch assembly E series uses the same assembly as F series. However, the range is limited due to the reference scale. Temperature bulb and capillary: 6 feet. 304 stainless steel in-line: 120 and 121 models: nickel-plated brass; optional 316L stainless steel.  Precautions  Pressure switches are widely used in high and low pressure protection control of household, commercial, automotive refrigeration systems, steam working conditions and power stations; accumulators, receivers, flash tanks, separators, scrubbers, oil refineries It is also suitable for high and low pressure protection control of various equipment and tools. However, in the selection of pressure switches, the following points must be paid attention to:  1. The necessity of explosion protection: explosion-proof forms are divided into flameproof type and intrinsically safe type 2.  Whether it is necessary to have instructions: according to customer instructions.  3. Number of contacts: one contact (one output) or two contacts (two outputs).  4. Determination of setting value and pressure range: the recommended setting range is within the pressure range 30% - 65% of the pressure range, and the adjustable range is between 15% - 90% of the pressure range.  5. The form of the connection difference: adjustable or fixed. 6. Whether there is pulsation: If the pressure pulsates or vibrates, a throttle valve is required to suppress the damage to the instrument caused by the pulsating pressure.  7. Occasions with a diaphragm: When measuring corrosiveness, high viscosity or high temperature, it is necessary to use a diaphragm.  

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