UE压力开关H100-171H100-172（US UE pressure switch H100-171 H100-172 ）

American UE pressure switch H100 series parameter details: technical parameter:  Storage temperature -54～71℃ Ambient temperature -40～71℃; 520-525.700-706 type: -18～71℃. The ambient temperature changes by 28℃. The typical drift of the set point does not exceed 1%  Set point repeatability temperature switch: ±1% within adjustable range Pressure switches 171-174.218.270-376.520-535.700-706.560-564 and other models are ±1% of the adjustable range; models such as 190-194.183-189.483-489.565-567.610-680.490-494 are ±1.5% of the adjustable range; All pressure switches have internal set point lockout   Shock resistance tested at 15G, 10ms cycle time. Reproducible set point Anti-vibration After 2.5G, 5 ~ 500HZ vibration test, the set point can be reproduced Housing Die-cast aluminum alloy (copper max. 0.6%). With epoxy resin coating. Stainless steel anti-jamming scale cover with sealing gasket. Clamping screw The enclosure level complies with NEMA4X.IP65 requirements The switch output is a single pole double throw (SPDT) snap action switch. Can be connected as "normally open" or "normally closed" Electrical rating 15 amps. 125/250/480 VAC  Weight 2-7 lbs (varies by model) The pressure connection port is 1/4"NPTF; 171-194.483-489.520-535 and other models are 1/2"NPTF; 560-564 is 2" sanitary connection; 565-567 is 1 1/2" sanitary connection Features: * One switch model output * Epoxy-coated and cast-aluminum housing meets NEMA 4X standards * Set point lock to prevent misuse * Heat trace level antifreeze protection * Pressure resistance up to 10.000psi (689.5bar) * Adjustable range pressure: 30″Hg Vac to 5000psi (-1 to 344.7bar)   Precautions Pressure switches are widely used in high and low pressure protection and control of household, commercial and automotive refrigeration systems, steam working conditions and power stations; accumulators, receivers, flash tanks, separators, scrubbers, refinery units. It is also applicable to the high and low pressure protection control of various equipment tools. However, in the selection of the pressure switch, the following points must be paid attention to: 1. The necessity of explosion-proof: explosion-proof forms are divided into flameproof type and intrinsically safe type. 2. Do you need to bring 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 between 30% and 65% of the pressure range, and the settable range is between 15% and 90% of the pressure range. 5. The form of 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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