Products

The Model 20SW is a solid state stainless steel pressure switch designed for use in a variety of applications. Applying digital compensation, this product offers top performance over a wide temperature range. Utilizing Krystal Bond Technology™, the sensing element will measure pressure in the most extreme temperature conditions. Where other sensor technologies will freeze or boil, the AST20SW uses a one piece stainless steel sensor to offer continuous operation. If linearity and repeatability are critical for your application, this product will exceed your expectations at an affordable price.

Design Benefits
– No Moving Parts
– The reliability of a sensor
– Single Pole / Double Throw (SPDT)
– High Proof Pressure / Burst Pressure
– Many Options

Applications / Industries
Industrial Controls
– Water Management Systems
– Hydraulic Systems
– Boiler Controls

Performance @ 25°C (77°F)

Accuracy1<±1.0% BFSL of line pressure
Proof Pressure2X rated line pressure, standard
Burst Pressure5X or 60,000 PSI of line pressure, whichever is less
Pressure Cycles> 100 million full pressure cycle
1 Accuracy includes: Non-linearity, Hysteresis and Non-repeatability

Environmental Data

Temperature
Operating-40 to 85°C (-40 to 185°F)
Storage-50 to 105°C (-58 to 221°F)
Thermal Limits
Compensated Range-20 to 70°C ( -4 to 158°F)
Other
ShockEN 60068-2-27
VibrationEN 60068-2-6, 60068-2-64,
and IEC 68-2-32
EMI/RFI ProtectionYes
RatingIP-66

Electrical Data

Excitation10-28VDC
Current Consumption< 10mA
Output Load1 Amp., Resistive
Reverse PolarityYes
Reverse Polarity ProtectionYes