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

Maximum 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 spraying

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


by Design

The ToughSonic name says it all:

  • Type 316 stainless steel housing (except PVC model)
  • Ruggedized piezoelectric ultrasonic transducer, potted in place
  • 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.



ToughSonic sensors have the smarts you need 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!

  • 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
  • 5 simultaneous industry standard outputs
  • Voltage, 4-20 mA, sinking/sourcing switches
  • 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: 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

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

ToughSonic 50 Dimensional Drawing

Part No.Outputs
TSPC-21S-4855 + RS-485
TSPC-21S-485ARS-485 only *
TSPC-21S-2325 + RS-232
TSPC-21S-232ARS-232 only *
* Serial data only models have 4-wire (dual-twisted pair) cables

ToughSonic 50
1-1/2 in. NPT thread

(Rear indicators not visible)

ToughSonic 50 Ultrasonic Sensor

Part No.Outputs
TSPC-21SRM-4855 + RS-485
TSPC-21SRM-485ARS-485 only *
TSPC-21SRM-2325 + RS-232
TSPC-21SRM-232ARS-232 only *
* Serial data only models have 4-wire (dual-twisted pair) cables

ToughSonic 50 Variations

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

Part No.Outputs
TSPC-25P-4855 + RS-485
TSPC-25P-485ARS-485 only *
TSPC-25P-2325 + RS-232
TSPC-25P-232ARS-232 only *
* Serial data only models have 4-wire (dual-twisted pair) cables


Maximum Range50 feet (15.2 meters)
Optimum Range1 foot - 33 feet (30.5 centimeters - 10 meters)
Temperature-40° to 158° F (-40° to 70° C)
Humidity0 to 100% operating
ProtectionNEMA-4X, NEMA 6P, IP68
TransducerRuggedized piezoelectric
CompensationTemperature compensated (selectable in SenixVIEW)
ResolutionSerial data: 0.0135 in. (0.3438 mm)
Analog steps: 4099 (0-10 VDC),
3279 (4-20 mA)
RepeatabilityNominal 0.2% of range @ constant temp. Affected by target, distance, environment
Update Rate5 Hz (200 ms), SenixVIEW adjustable; affected by SenixVIEW filter selections

Specifications are subject to change without notice.


Voltage Output0-10, 0-5 VDC or SenixVIEW customized; 10 mA max.
Current Loop #1Current sourcing 4-20 mA or SenixVIEW adjustable, max. loop 450Ω
Current Loop #2Current sinking 4-20 mA or SenixVIEW adjustable, max. loop 450Ω
Two Switches150 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-485Modbus & streaming protocols, 9600-115200 baud (selectable), 8 data bits, 1 stop, no parity, model number determines interface
SYNC featurePermits up to 32 sensors to operate in close proximity without interference. Not usable with serial data only models.


Mounting2.3 inch clamp, 1.5 inch NPT or 2.5 inch NPT
Attached Cable6.5 feet (2 meters) Custom lengths available
Total Weight22.6 oz. (0.64 kg)

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