toughsonic-50-logoMaximum Range 50 Feet (15.2 Meters)

ToughSonic 50 Ultrasonic Sensor Features

  • Long range — small housing
  • Rugged construction, IP68 rated
  • Indoor or outdoor uses
  • Three mounting options
  • Five outputs plus serial data
  • Serial data-only models
  • Temperature compensation
  • User configured with PC

ToughSonic 50 Ultrasonic Sensor Best Applications

  • Tank levels of benign liquids
  • Flood level detection
  • Open water within Optimum Range
  • High sensitivity at distance
  • Object presence/absence status
  • Tree detection and sprayingmarine-grade-type-316-stainless-steel-150x150

ToughSonic 50 Ultrasonic Sensor

PVC, Front &
Rear Threads

ToughSonic 50 Ultrasonic Sensor 316 Stainless Cylindrical

316 Stainless


316 Stainless
Rear Threads

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Tall Tank Level


Metal Looping Pits

ToughSonic 50 Ultrasonic Sensor Metal Looping Pits

Rivers & Streams



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

  • to PLCs, motor drives, displays, PCs – you name it!
  • Universal: one sensor = many applications
  • 2 simultaneous industry standard outputs that are selecting 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 RS-485 networks
  • Serial data-only models are also available

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 50 Variations

ToughSonic 50
Cylindrical housing

Data Sheet
3D Models

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ToughSonic 50 Ultrasonic Sensor 316 Stainless Cylindrical
Part No. Outputs
TSPC-21S-485 5 + RS-485
TSPC-21S-485A RS-485 only *
TSPC-21S-232 5 + RS-232
TSPC-21S-232A RS-232 only *
* Serial data only models have a 4-wire cable

ToughSonic 50
Rear 1-1/2 in. NPT thread

(Rear indicators not visible)


Data Sheet

3D Models

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Part No. Outputs
TSPC-21SRM-485 5 + RS-485
TSPC-21SRM-485A RS-485 only *
TSPC-21SRM-232 5 + RS-232
TSPC-21SRM-232A RS-232 only *
* Serial data only models have a 4-wire cable

ToughSonic 50 Variations

ToughSonic 50 PVC
2-1/2 in. NPT threads

Data Sheet
3D Models

Request a Quote

Part No. Outputs
TSPC-25P-485 5 + RS-485
TSPC-25P-485A RS-485 only *
TSPC-25P-232 5 + RS-232
TSPC-25P-232A RS-232 only *
* Serial data only models have a 4-wire cable



Maximum Range 50 feet (15.2 meters)
Optimum Range 1 foot – 33 feet (30.5 centimeters – 10 meters)
Deadband 0-12 in (0-303 mm)
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: 0.0135 in. (0.3438 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 5 Hz (200 ms), SenixVIEW adjustable; affected by SenixVIEW filter selections

*Specifications are subject to change without notice.



Voltage Output 0-10, 0-5 VDC or SenixVIEW customized; 10 mA max.
Current Loop #1 Current sourcing 4-20 mA or SenixVIEW adjustable, max. loop 450Ω
Current Loop #2 Current sinking 4-20 mA or SenixVIEW adjustable, max. loop 450Ω
Two Switches 150 mA max. @ 40 VDC max., SenixVIEW selected as sinking (NPN) or sourcing (PNP), each with adjustable set point, polarity, hysteresis & time delays
RS-232, RS-485 Modbus & streaming protocols, 9600-115200 baud (selectable), 8 data bits, 1 stop, no parity, model number determines interface
SYNC feature Permits up to 32 sensors to operate in close proximity without interference. Not usable with serial data only models.



Mounting 2.3 inch clamp, 1.5 inch NPT or 2.5 inch NPT
Attached Cable 6.5 feet (2 meters) Custom lengths available
Total Weight 22.6 oz. (0.64 kg)