SOR Ultrasonic Switch, 701
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701 Ultrasonic Switch

Brand: SOR Inc
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The 701 tip-sensitive ultrasonic switch is a single-point device designed for economical detection of clean liquids. 

There are no moving parts and no calibration. The 701 is available either integral or remote mounted. 

An optional time delay can be used to eliminate false alarms due to turbulence in the process. 

An optional field selectable fail-safe switch is also available. 

The standard unit is set to High-level Failsafe (HLFS). 

The 701 is comprised of two parts. The first is the electronics and housing; the second is the sensor. 

Select the electronics and housings on this page and refer to page 18 for the sensor model number.
Features
  • No calibration required
  • 10 A DPDT relay output
  • FM Approved or CSA Certified for hazardous locations
  • Line and loop-powered versions
  • Rostechnadzor (RTN) standard certificate

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Specifications

Brand

Adjustment Type

  • Fail-safe: Field Adjustable
  • Fail-safe: High-Level Fail-safe (HLFS)

Ambient Temperature Range

  • -40° to 71° C (-40° to 160° F)

Approvals & Certifications

  • CRN
  • CSA: Class I, Groups C, D, Class II, Groups E, F, G, Class III, Div. 1
  • FM: Class I, Groups C, D, Class II, Groups E, F, G, Class III, Div. 1
  • RTN

Cable Length

  • Remote Cable: 50 feet (15.2 metres)

Conduit Connection

  • 3/4” NPT

Electrical Contacts

  • Gold-Contact Relay

Enclosure Finish

  • Housing Exterior: Fungicidal Varnish
  • Powder Epoxy Coated
  • Powder-Coated Epoxy

Environmental Protection

  • Explosion-proof
  • Intrinsically Safe
  • IP65
  • IP66
  • NEMA 4X

Input Power

  • Input Power (Line): 120 Vac, 50/60 Hz
  • Input Power (Line): 24 Vdc
  • Input Power (Line): 240 Vac, 50/60 Hz

Loop Resistance

  • 765 ohms, Max.

Maximum Current

  • Draw (Line Power): 100 mA, 24 Vdc
  • Draw (Line Power): 18 mA, 240 Vac
  • Draw (Line Power): 35 mA, 120 Vac

Mounting

  • Pipe Mounting Kit
  • Remote Electronics Flat-Surface Mounting Bracket

Name Plate, Tag Material

  • Stainless Steel
  • Fiber

Output

  • Output Typical (Line): 10 A DPDT at 250 Vac
  • Output Typical (Line): 10 A DPDT at 30 Vdc
  • Output Typical (Loop): 16 mA (Wet)
  • Output Typical (Loop): 8 mA (Dry)

Pressure Range

  • psi: 2,000 (kPa: 13,800, bar: 138) - Max.

Process Temperature

  • -40° to 121° C (-40° to 250° F)

Repeatability

  • 0.078” (2 mm)

Response Time

  • 1 second (OFF), 0 second (ON)

Sensor, Probe Style

  • Ultrasonic

Switch Type

  • DPDT Relay

Documentation

Data Sheets

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