Anfield Sensors Inc. - The Pressure is On - Switch to the Best


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Snap Action Low Pressure Switch

An economical solution to your analog sensing need: the Ultrasonic Level Sensor can be used as a simple multipoint level switch or for continuous feedback through a 4–20 mA loop. With no moving parts and a fully progammable settings, it is more flexible than float level switches. Its compact size and robust construction makes it well suited for industrial or mobile equipment.

Click Here for ULS Datasheet / Ordering Information


  • 5” to 78” (13 to 200 cm) sensing range
  • 4 digital outputs & 1 analog (4–20 mA) output
  • Cast aluminum body with IP65 rating
  • 1” NPT process connection
  • Digital display with push buttons for setup
  • Advanced USB programming
  • Compensation for fluid sloshing


  • Water tanks
  • Hydraulic units
  • Intermediate bulk containers (IBCs)


78” (200 cm) from sensor surface at 32°F (22°C)
0.5% max distance (perpendicular to surface)*
Dead Zone
5” (12 cm) from sensor face
Beam angle
12° ± 2°
Ultrasonic Frequency
112 kHz
User Interface
Field Adjustable (push buttons and display)
Supply Voltage
0 - 36 VDC (100mA maximum)
Analog Output
4-20mA **
Contact Type
(4) Normally Open SPST relays, 0.4A and 4-20 mA
Contact Hysteresis
Adjustable, 0 to 100% 
Ambient Temperature
14°F to 140°F (-10°C to 60°C) 
Enclosure Materials / Rating
IP65 Powder Coated Aluminum 
Exposed Materials
Epoxy, Stainless steel, Aluminum
Cable Type
8-conductor shielded cable
Process Connection
1” NPT Stainless Steel
Optional Accessory
2” NPT PVC fitting. Recommended for optimal sensor performance 

* in stable homogeneous standard environment

(affected by temperature gradients, vapors, supply voltage)

** conversion error rate 0.2%


SPA Dimension


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