Low Differential Pressure Switches, SPDT Relay Output |
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Low Differential Pressure Switches, SPDT Relay Output
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$
176.00
PSW-141-AR
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Virtually Impervious to changes in Position
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Fast Response Time Due to Low Internal Volume
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No Moving Parts - Solid State Circuity for Long Life
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Compact Size
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Low Power Consumption
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View related products - Pressure Switches
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LIMITED STOCK AVAILABLE. This item is being discontinued.
Please see the PSW-150 Series 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.
SPECIFICATIONS
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
Power Requirements:
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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MOST POPULAR MODELS HIGHLIGHTED! |
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† All dollar amounts on this site are shown in US currency.
Note: (1) for 24 Vdc power specify model PSW142, no add’l charge; for 24 Vac power specify model PSW143; for 120 Vac power specify model PSW144, no add’l charge. (2) For switch energizing on falling pressure, change the suffix “R” to “F”; no add’l charge.
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Part Number Builder |
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Option Descriptions
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(1)
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Power
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Select
1 for 12 Vdc power
2 for 24 Vdc power
3 for 24 Vac power
4 for 120 Vac power
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(2)
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Range (Inches of water)
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Select
-A for 0 to 0.1
-B for 0 to 0.2
-C for 0 to 0.3
-D for 0 to 0.5
-E for 0 to 1.0
-F for 0 to 2.0
-G for 0 to 3.0
-H for 0 to 5.0
-I for 0 to 10.0
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(3)
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Output Function
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Select
R for energize on rising pressure
F for energize on falling pressure
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NOTE: All combinations may not be valid, check spec sheet for valid part numbers.
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