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Low Differential Pressure Switches- SPDT Relay Output
- Virtually Impervious to changes in Position
- Fast Response Time Due to Low Internal Volume
- No Moving Parts - Solid State Circuity for Long Life
- Compact Size
- Low Power Consumption
Description LIMITED STOCK AVAILABLE. This item is being discontinued.
Please see the as a possible substitute.
PSW141 Series low differential pressure switches operate on the capacitive principle and are capable of sensing very low positive or negative pressures. In a capacitive cell, a very lightweight, responsive diaphragm deflects slightly when pressure is applied. This deflection results in a change in capacitance which is then detected and processed by solid state circuitry. Reliability and long life are inherent advantages of this design.
Set point is adjusted by a 20-turn potentiometer for fine resolution
Repeatability: ±1% of set point
Deadband: Factory set to 7% of range to prevent relay chatter
Media Compatibility: Suitable for air or inert gases
Overpressure: 8 times range maximum
Port Connections: 4.8 mm ( 3 /16 ) dia. tube; suitable for 3.2 mm ( 1 /8 ") I.D. Tygon tubing
or 6.3 mm ( 1 /4 " O.D.) polyethylene tubing
12 Vdc models* = 9.5 to 16 Vdc @ 0.25 W
24 Vdc models* = 19 to 32 Vdc @ 0.25 W
24 Vac models = 19 to 32 Vac @ 1.50 W
120 Vac models = 100 to 140 Vac @ 1.70 W
* Reverse polarity protected
Electrical Connections: 3 /8 " terminal strip with #6 screw
Output: SPDT (form C) relay 1 A, 24 Vdc or 0.5 A, 120 Vac resistive
0.3 A, 24 Vdc or 0.2 A, 120 Vac inductive 300,000 cycles minimum
Isolation: Input to output 500 Vrms min.
Dimensions: 76 W x 131 L x 36 H mm (3.0 x 5.15 x 1.4")
Weight: 230 g (0.5 lb)
Case Material: Flame retardant, glass-reinforced Noryl
Operating Temperature: 0 to 45°C (32 to 113°F)
Temperature Effect on Set Point: ±0.05%/°C
Humidity Range: 20 to 90% RH non-condensing
Shock: 10 g’s (11 ms)
Vibration: 5 g’s to 50 Hz
Examples of pricing for popular models is referenced in the "To Order" box. Use the "Part Number Builder" below to get pricing for all available models.
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