Series WS-FR Wireless Flowmeter
Series WS-FR Wireless Flowmeter
Sensocon® DataSling™ Wireless Flow Sensors are precision-engineered devices designed for accurate measurement of flow rate and totalization in liquid systems. Housed in a durable, IP65-rated enclosure, the WS-FR is built to withstand demanding industrial environments, delivering reliable performance in both indoor and outdoor installations.
Powered by LoRaWAN® wireless technology, the WS-FR supports long-range, low-power communication—ideal for monitoring flow in applications such as water filtration lines, chemical dosing systems, pump monitoring, and general process control. With a multi-year battery life, the WS-FR provides a low-maintenance solution for remote or difficult-to-access locations.
The WS-FR integrates seamlessly with the Sensograf™ cloud-based platform, offering real-time visibility into flow activity, user-defined thresholds, and automated alerts. This enables proactive maintenance, usage tracking, and informed operational decisions—ensuring accuracy, efficiency, and reliability across your system.
COMMON APPLICATIONS
Pump Monitoring and Protection
Verify proper flow through pump systems to detect issues like loss of prime, cavitation, or flow restriction.
Filtered Water and Beverage Lines
Monitor flow in filtered water or beverage dispensing systems to ensure consistent delivery and identify clogged filters or flow anomalies.
Chemical Dosing and Injection Systems
Accurately measure and totalize chemical flows in water treatment, food processing, or industrial dosing lines to ensure proper treatment ratios.
HVAC and Cooling Systems
Track flow in chiller loops, condensate lines, and cooling circuits to validate equipment operation and maintain energy efficiency.
Process and Manufacturing Equipment
Measure flow to and from mixers, blenders, or packaging equipment to maintain product quality and detect unexpected flow drops.
Tank Fill and Drain Monitoring
Log total flow into or out of tanks for inventory tracking, batching operations, or automated system control.
Irrigation and Utility Water Lines
Monitor flow in irrigation zones, lab water systems, or utility rinse lines to ensure proper distribution and detect leaks.



Specifications
- Operating Temperature
- -4° to 149°F (-25° to 65°C)
- Process Connection
- 1/4"NPTM
- Enclosure Rating
- IP 65
- Weight
- 90g
- Wireless Security
- AES-128
- Antenna
- External Antenna
- Battery Life
- 2.5 to 5 years
- Minimum Interval
- 10 minutes
- Wireless Range
- Up to 10 miles*
- Max Receive Sensitivity
- -130dBm
- Wireless Technology
- LoRaWAN Class A
- Frequency Bands
- US915
- Battery Type
- CR123A (x2)
*Clear line-of-sight. Transmit distances will vary.
Model Numbers
Model Number | Type | Connection Size | Flow Range | Accuracy |
---|---|---|---|---|
WS-FR01 | Paddlewheel | 1/4" NPTM | 0.16-3 GPM | +/- 0.5% FS |
WS-FR02 | Paddlewheel | 1/2" NPTM | 1-32 GPM | +/- 0.5% FS |
WS-FR03 | Paddlewheel | 3/4" NPTM | 1.5-45 GPM | +/- 0.5% FS |
WS-FR04 | Paddlewheel | 1" NPTM | 2.5-79 GPM | +/- 0.5% FS |
WS-FR05 | Paddlewheel | 2" NPTM | 10.5-357 GPM | +/- 0.5% FS |
Also available in multi-variable models (e.g., flow + humidity/temperature).