Ultrasonic Sensor – ToughSonic 50

Maximum Range 50 feet (15.2 Meters)

Like all Toughsonic sensors, they are built for durability and ease of use in tough industrial environments. ToughSonic 50s are fully immersible, corrosion resistant, shock resistant and all around tough. They are also fully configurable with SenixVIEW software.

ToughSonic 50s are available in three different housings, each with either RS-232 or RS-485 serial interfaces. A 9-wire cable allows up to six simultaneous serial, analog and/or switch outputs. These workhorse sensors are used around the world in remote liquid level applications and harsh factory environments.

For shorter range applications or for chemically resistant sensors, please see the rest of our ToughSonic and ToughSonic CHEM models.

ToughSonic 50 Options


The ToughSonic 50 is available in three different housings. All sensor features are available with any housing.

Ultrasonic sensor ToughSonic 50 Standard Housing Standard

Our Standard Model (TSPC-21S) comes in a 2.1 inch (53.34 millimeter) smooth 316 stainless steel housing for easy clamping.

ultrasonic sensor ToughSonic 50 Rear Mount Rear Mount

The Rear Mount Model (TSPC-21SRM) adds a stainless steel end cap with 1.5 inch NPT threading to the 2.1 inch smooth standard housing.

Ultrasonic sensor ToughSonic 50 PVC PVC Model

The PVC Model (TSPC-25P) is packaged in a 2.5 inch PVC housing with 2.5 inch NPT threading on either end for tank level applications.

Serial Interface

The ToughSonic 50 is available with one of the following Modbus serial data interfaces.


Modbus RS-232 serial data interface


Modbus RS-485 serial data interface

Sensor Customization

  • Custom SenixVIEW configurations can be pre-loaded.
  • Alternative cable type, length and connections are available

Our ToughSonic ultrasonic sensors offer extraordinary features and flexibility. If you need sensor capabilities that are not listed here, please contact us. We’ve been designing ultrasonic sensors since 1990. We can develop a sensor solution for you. Email: Customer.Service@Senix.com. Phone: +1 802 489 7300.


ToughSonic ultrasonic sensors are built Tough with:

  • Type 316 stainless steel housing (except PVC model).
  • Sealed epoxy potting for wet and dirty applications.
  • Ruggedized piezoelectric ultrasonic transducer, potted in place.
  • Hardened ToughSonic solid state internal electronics.
  • UV resistant, potted-in, 9-wire cable.
  • Short and overload protected input / output.


ToughSonic ultrasonic sensors are built Smart with:

  • SenixVIEW configuration and analysis software controls more than 60 performance parameters and dozens of viewing, analysis and maintenance options.
  • Multi-sensor network capable.
  • Up to six simultaneous, industry standard outputs.

Ultrasonic sensor ToughSonic 50 standard housing

ultrasonic sensors are CE compliant


ultrasonic sensor liquid level ToughSonic 50ToughSonic 50 Rear Mount with optional stainless steel flange.

ultrasonic sensor liquid level ToughSonic 50 PVC

ToughSonic 50 PVC Model with optional flange.

ultrasonic Sensors Made in USA


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
ResolutionDigital: 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
Sinking Switch150 mA max. @ 40 VDC max., teachable set point & polarity, fault indication
Sourcing Switch150 mA max. @ input voltage, teachable set point & polarity, fault indication
RS-232, RS-485Modbus protocol, 9600-115200 baud (selectable), 8 data bits, 1 stop, no parity
SYNC featurePermits up to 32 sensors to operate in close proximity without interference


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

ToughSonic 50 with smooth standard housing

ultrasonic sensor mechanical drawing of rear mount

ToughSonic 50 with rear mount with 1.5 inch NPT

ultrasonic sensor PVC mechanical drawing

ToughSonic 2.5 inch PVC with 2.5 inch NPT

Click “Quick View” for pricing and part number (SKU).  Click the photo to learn more and/or buy online (US only).

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