Phone: +1 (802) 489-7300      Toll-Free (US & Canada): +1 (800) 677-3649

ToughSonic 3 Logo
Maximum Range 3 Feet (91 cm)

CE Mark


  • 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
  • Serial data-only models
  • Temperature compensation options
  • Push-button or PC configurable

Best Applications

  • Very short target distances
  • Narrow beam in restricted spaces
  • Small tank levels of benign liquids
  • Small roll diameters and web loops
  • Outdoor applications to 2-ft (61 cm)
  • Sensitive to target perpendicularity

ToughSonic 3 in 30mm type-316 stainless steel housing

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

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Small Tank Level

Small Tank Level Sensing Icon

Small Roll Diameter

Roll Diameter Sensing Icon

Web Break

Web Break Sensing Icon


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. Serial data-only models are available for remote monitoring and other digital-only applications.



ToughSonic sensors have the smarts you need…

  • to easily connect with your equipment
  • to communicate digitally
  • to optimize the sensor to the application
  • to create stand-alone functions
  • to 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!

  • Ready out of the box but fully adjustable with SenixVIEW software (included)
  • Connect to a PC serial port or use our USB setup kit
  • Wiring and mounting accessories available


by Wire

Any connection you need…

  • to PLCs, motor drives, displays, PCs – you name it!
  • Universal: one sensor = many applications
  • 2 simultaneous industry standard outputs that are selected using SenixVIEW software
  • Output #1: 4-20 mA sourcing, or PNP/NPN switch
  • Output #2: 0-10 VDC, or PNP/NPN switch
  • 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-addressable RS-485 networks
  • Serial data-only models are also available

Connected: To LAN or Cloud

Send liquid levels wirelessly and view them on a LAN    or in the cloud using our new AirWire LoRa transmitter:

  • From in-plant or outdoors up to miles away
  • Low energy, battery powered transmitter
  • Tank levels or outdoor bodies of water
  • Receive high & low level alerts
  • No subscription service charges
  • For low data rate applications
  • No conduit or power required

For more information see the AirWire LoRa page.

Connected: To Senix

  • We talk, too! Call us at 802-489-7300.

Smart. SenixVIEW PC 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

SenixVIEW on a laptop

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   


Part No.Outputs
TSPC-30S2-4852 + RS-485
TSPC-30S2-485ARS-485 only *
TSPC-30S2-2322 + RS-232
TSPC-30S2-232ARS-232 only *
* Serial data only models have 4-wire (dual-twisted pair) cables

ToughSonic 3
1-in. NPT thread

Data Sheet   


Part No.Outputs
TSPC-N1S2-4852 + RS-485
TSPC-N1S2-485ARS-485 only *
TSPC-N1S2-2322 + RS-232
TSPC-N1S2-232ARS-232 only *
* Serial data only models have 4-wire (dual-twisted pair) cables


Maximum Range3 feet (91 cm)
Optimum Range1.75 to 24 inches (4.5 to 61 cm)
Temperature-40° to 158° F (-40° to 70° C)
Humidity0 to 100% operating
ProtectionNEMA-4X, NEMA 6P, IP68
TransducerRuggedized piezoelectric
CompensationTemperature compensated<br /> SenixVIEW selected options
ResolutionDigital: 0.0034 in. (0.086 mm); Analog steps: 4099 (0-10 VDC), 3279 (4-20 mA)
RepeatabilityNominal 0.2% of range @ constant temp. Affected by target, distance, environment
Update Rate20 Hz (50 ms), SenixVIEW adjustable; affected by SenixVIEW filter selections

Specifications are subject to change without notice.


Output #1Default: 4-20 mA, SenixVIEW configurable
Alternate: Configure it as a switch output
Output #2Default: Voltage, SenixVIEW configurable
Alternate: Configure it as a switch output
Voltage Output0-10, 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 featurePermits multiple sensors to operate in close proximity without cross-talk
Not usable concurrently with serial data


Housing316 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 Cable6.5 feet (2 meters), PUR jacketed
Custom lengths available
Standard models: 6-wire shielded + drain
Serial data only models: 4-wire + drain, dual twisted shielded pair
Total Weight30 mm: 10.4 oz. (0.29 kg)
1-in NPT: 14.2 oz. (0.40 kg)
Weights include 2 m cable

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