ToughSonic 3 Ultrasonic Sensor Features

  • Short range — small housings
  • Short deadband at 1.75 in (44 mm)
  • Very narrow beam at close range
  • Indoor or outdoor uses
  • Straight or tapered thread options
  • Two outputs plus serial data
  • Temperature compensation options
  • Push-button or PC configurable

ToughSonic 3 Ultrasonic Sensor Best Applications

  • Very short target distances
  • Narrow beam in restricted spaces
  • Small roll diameters and web loopsmarine-grade-type-316-stainless-steel-150x150

ToughSonic 3 Ultrasonic Sensor in 30mm type-316 stainless steel housing

ToughSonic 3 in type-316 stainless steel housing with 1 in NPT thread for tank mounting

Get a Quote Today.

Request a Quote

Small Tank Level

Small Tank Level Sensing Icon

Small Roll Diameter

Roll Diameter Sensing Icon

Web Break

Web Break Sensing Icon


Tough. by Design

The ToughSonic name says it all:

  • Type 316 stainless steel housing (except PVC model)
  • Ruggedized piezoelectric ultrasonic transducer
  • Hardened & protected solid state electronics
  • UV resistant, potted-in, PUR-jacketed cable
  • All epoxy-potted for wet or dirty applications
  • Short and overload protected outputs
  • IP68 ingress rating (submersible)

Type 316 stainless steel provides superior corrosion and chemical resistance, resists pitting, and is often applied in salt water environments.

Sensors can be assembled with custom cables or connectors. Other custom builds are available for OEM applications, such as serial data-only applications.

Smart. Engineering

ToughSonic sensors have the smarts to:

  • easily connect with your equipment
  • includes both analog and switch outputs
  • communicates by serial data
  • optimize the sensor to the application
  • create stand-alone functions
  • duplicate applications without re-calibration

Senix invented PC-configurable “smart sensors” in 1990 and has improved them ever since, giving you get the benefits of years of continuous improvement!


Flexible. Outputs

connect to

  • PLCs, motor drives, displays, PCs – you name it!
  • Universal: one sensor = many applications
  • 5 simultaneous industry standard outputs that are configured using SenixVIEW software
  • Analogs: 0-10 VDC, 4-20 mA sourcing and 4-20 mA sinking
  • Switches: Two, configurable as either sourcing (PNP) or sinking (NPN)
  • All configurable to the application’s needs

PLUS EVERY ToughSonic Ultrasonic Sensor has serial data for SenixVIEW setup or user application:

  • Choose RS-232 or RS-485 by sensor part number
  • RS-485 recommended unless RS-232 is required
  • Multi-sensor Modbus RS-485 networks

Connected.SenixVIEW Software

SenixVIEW is included at no charge, runs on a Windows PC and connects to sensors via a serial data port. Our Setup Kits provide everything needed to connect through a USB port, including power supply, sensor-PC interface and cables. SenixVIEW is not required but adds powerful configuration, test and management capability.

  • View sensor measurements graphically in several different ways
  • Over 60 user-adjustable parameters
  • Built-in data logging, graphing, exporting and statistics facilities
  • Save & retrieve setups for maintenance and sensor cloning

Sensor Adjustments Give You More Control 

  • Analogs: Slope, distance endpoints, analog value limits
  • Switches: Setpoints, hysteresis /window features, time delays
  • All Outputs: Power-on, loss of echo, loss of SYNC responses
  • Serial Data: Communications and SYNC modes and functions
  • Measurements: Temperature compensation, sensitivity, data filters, measure rate, gain settings and data processing filters
  • Adjustments: Stored in sensor memory even when power is off

ToughSonic 3 Variations

ToughSonic 3
30 mm Straight Threads

Data Sheet
3D Models

ToughSonic 3 Ultrasonic Sensor in 30mm type-316 stainless steel housing
Part No. Outputs
TSPC-30S2-485 2 + RS-485
TSPC-30S2-232 2 + RS-232
RS-485 recommended unless RS-232 is required.

ToughSonic 3
1-in. NPT thread

Data Sheet

ToughSonic 3 in type-316 stainless steel housing with 1 in NPT thread for tank mounting
Part No. Outputs
TSPC-N1S2-485 2 + RS-485
TSPC-N1S2-232 2 + RS-232
RS-485 recommended unless RS-232 is required.



Maximum Range 3 feet (91 cm)
Optimum Range 1.75 to 24 inches (4.5 to 61 cm)
Deadband 0-1.75 in (0-4.5 cm)
Temperature -40° to 158° F (-40° to 70° C)
Humidity 0 to 100% operating
Protection NEMA-4X, NEMA 6P, IP68
Transducer Ruggedized piezoelectric
Compensation Temperature compensated (selectable in SenixVIEW)
Resolution Serial data: 0.0034 in. (0.086 mm)
Analog steps: 4099 (0-10 VDC),
3279 (4-20 mA)
Repeatability Nominal 0.2% of range @ constant temp. Affected by target, distance, environment
Update Rate 20 Hz (50 ms), SenixVIEW adjustable; affected by SenixVIEW filter selections

*Specifications are subject to change without notice.



Output #1 Default: 4-20 mA; SenixVIEW configurable
Alternate: Configure it as a switch output
Output #2 Default: Voltage, SenixVIEW configurable
Alternate: Configure it as a switch output
Voltage Output 0-10, 0-5 VDC or SenixVIEW configurable
10 mA maximum
4-20 mA
Current Loop
Current sourcing, SenixVIEW configurable
Maximum loop resistance 450Ω
Switch Output(s) Output #1 and/or #2 can be a switch
Each can be sinking (NPN) or sourcing (PNP)
Max ratings: 150 mA @ 40 VDC
Each has adjustable setpoint, polarity, hysteresis, window, time delays and more
RS-232 or
Modbus & streaming protocols
9600-115200 baud (configurable)
8 data bits, 1 stop, no parity
RS-485 permits multi-sensor networks
Part number determines interface
SYNC feature Permits multiple sensors to operate in close proximity without cross-talk
Not usable concurrently with serial data



Housing 316 stainless steel for corrosion resistance
Usable in salt water, H2S environments
(30 mm)
Through hole in bracket or panel
Two jam nuts included
Stainless & nylon brackets available
Adapters to 1-1/2 in and 2 in NPT available
(1-in NPT)
Typically for tank mounting
Mates with 1-in NPT female thread
Attached Cable 6.5 feet (2 meters), PUR jacketed
Custom lengths available
Standard models: 6-wire shielded + drain
Serial data only models: 4-wire + drain
Total Weight 30 mm: 10.4 oz. (0.29 kg)
1-in NPT: 14.2 oz. (0.40 kg)
Weights include 2 m cable