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Water Sensors & Flow Sensors: Precise Measurement for Industry and IoT

35 products

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From leak detection and water quality measurement to flow sensors: At the EXP-Tech Shop, you’ll find professional water sensors for industrial processes, environmental monitoring, and IoT projects. The product range includes leak sensors, conductivity sensors, turbidity sensors, ORP sensors, and LoRaWAN water sensors from Dragino, as well as laboratory sensors from Sensorex 

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Showing 1 - 24 of 35 products
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Dragino Dragino LWL02-EU868 Water Leak Sensor
Sale price14,80 €
In stock, 4 units
The Dragino WQS-LB-EU868 LoRaWAN Wasserqualitätssensor Konverter with antenna and three cables—ideal for LoRaWAN Wasserqualität Überwachung and Wasserqualitätsmessung, shown from above.
Dragino Dragino WQS-LB-EU868 LoRaWAN Water Quality Sensor Converter
Sale price50,90 €
Not in stock, available for backorder
Dragino LWL04-EU868 LoRaWAN Water Leak SensorDragino LWL04-EU868 LoRaWAN Water Leak Sensor
DR-TS1 water turbidity sensor
Dragino DR-TS1 water turbidity sensor
Sale price195,00 €
Only 2 units left
DR-PH01 water pH sensor
Dragino DR-PH01 water pH sensor
Sale price158,00 €
In stock
DR-DO1 DO Sensor für gelösten Sauerstoff with a long coiled cable and RS485 connector, shown on a white background.
Dragino DR-DO1 DO dissolved oxygen sensor
Sale price238,00 €
Only 2 units left
DR-ECK1.0 Leitfähigkeitssensor K=1.0 in Schwarz mit IP68-Schutz, langem Spiralkabel und RS485-Schnittstelle, abgebildet vor weißem Hintergrund.
Dragino DR-ECK1.0 conductivity sensor K=1.0
Sale price126,00 €
In stock
Save 14,43 €
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Sensorex Sensorex pH1000 Polycarbonate Laboratory pH Sensor
Sale price26,57 € Regular price41,00 €
Only 1 unit left
Save 14,00 €
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Dragino DR-WLN-1M Water Leak Cable 10M
Sale price14,00 € Regular price28,00 €
Only 1 unit left
Save 5,00 €
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Dragino DR-WLN-1M Water Leak Cable 1M
Sale price5,00 € Regular price10,00 €
Only 2 units left
Dragino WL03A-LB-EU868 LoRaWAN Non-Position Rope Type Water Leak Controller
Dragino Dragino WL03A-LB-EU868 LoRaWAN Non-Position Rope Type Water Leak Controller
Sale price55,20 €
Not in stock, available for backorder
Dragino SW3L-LS-EU868-010 Solar-powered LoRaWAN outdoor flow sensor
Dragino SW3L-LB-EU868-006 LoRaWAN Outdoor Flow Sensor
Dragino SW3L-LS-EU868-020 solar powered LoRaWAN Outdoor Flow Sensor
Dragino SW3L-LB-EU868-004 LoRaWAN Outdoor Flow Sensor
Save 78,39 €
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Sensorex Sensorex ORP3000 Research Grade ORP Electrode
Sale price186,62 € Regular price265,01 €
Only 3 units left
Save 30,14 €
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Sensorex Sensorex S272CD Process pH Sensor with BNC
Sale price119,86 € Regular price150,00 €
In stock, 6 units
Save 25,40 €
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Sensorex Sensorex S200CD/SMA pH Sensor for General Use Extended Life
Sale price84,60 € Regular price110,00 €
Only 1 unit left
DR-ECK10.0 Leitfähigkeitssensor K=10 in Schwarz mit langem Spiral-Kabel, RS485 Schnittstelle und IP68-Schutz, auf weißem Hintergrund platziert.
Dragino DR-ECK10.0 conductivity sensor K=10
Sale price98,00 €
Only 3 units left
The DR-OPR1 ORP Redox-Sensor features a black cable with sensor probe, a Platin-Elektrode under a clear cap, and a long coiled wire ending in an RS485 connector.
Dragino DR-OPR1 ORP Redox sensor
Sale price98,00 €
In stock, 4 units
Dragino SW3L-LB-EU868-020 LoRaWAN Outdoor Flow Sensor
Dragino Dragino SW3L-LB-EU868-020 LoRaWAN Outdoor Flow Sensor
Sale price53,85 €
Not in stock, available for backorder
Dragino SW3L-LB-EU868-010 LoRaWAN Outdoor Flow Sensor
Dragino Dragino SW3L-LB-EU868-010 LoRaWAN Outdoor Flow Sensor
Sale price53,85 €
Not in stock, available for backorder
Save 56,79 €
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Sensorex Sensorex CS150 Graphite Conductivity Sensor K=0.1
Sale price113,21 € Regular price170,00 €
Only 1 unit left
Save 30,38 €
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Sensorex Sensorex pH1400 Light Duty Glass pH Electrode
Sale price58,62 € Regular price89,00 €
Only 1 unit left

Water Sensors at a Glance: These Are the Categories

Water Leak & Leakage Sensors

Dragino’s leakage sensors reliably detect water leaks and transmit alarms wirelessly via LoRaWAN. The compact LWL02 is a simple water leak sensor for point monitoring, while the LWL04 offers advanced features. The WL03A uses a leak detection rope (Rope Type) to monitor larger areas linearly. Use it for server rooms, utility rooms, or industrial facilities. Additional leak detection cables are available in 1-meter and 10-meter lengths.

Flow Sensors

The Dragino SW3L series includes LoRaWAN flow sensors for outdoor use in various pipe diameters (DN4, DN6, DN10, DN20). Battery-powered (LB) and solar-powered (LS) variants are available. The sensors measure water flow rate wirelessly and are suitable for monitoring irrigation systems, water lines, and industrial processes.

Water Quality Sensors

For comprehensive water quality measurement, EXP-Tech offers specialized probes from the Dragino DR series as well as laboratory sensors from Sensorex:

  • pH sensor (DR-PH01, Sensorex pH1000/pH1400/S272CD): Measurement of pH in drinking water, wastewater, and industrial processes
  • ORP sensor / Redox sensor (DR-OPR1, Sensorex ORP1000/ORP2000/ORP3000): Measurement of the oxidation-reduction potential as an indicator of water quality
  • Conductivity sensor (DR-ECK1.0, DR-ECK10.0, Sensorex CS150/CS200/CS875): Measurement of electrical conductivity as an indicator of ion concentration and purity
  • Turbidity sensor (DR-TS1): Measurement of suspended solids and turbidity in water and wastewater
  • Dissolved oxygen sensor (DR-DO1): Measurement of oxygen content – relevant for aquaculture, wastewater treatment plants, and environmental monitoring

The Dragino WQS-LB is a LoRaWAN water quality sensor converter that wirelessly connects the DR probes and transmits the measurement data via LoRaWAN.

UVC sensor

The Dragino UV254-LB measures UVC radiation at 254 nm—a wavelength range relevant for UV disinfection of water. It is therefore perfectly suited for monitoring UV disinfection systems in water treatment.

Water Sensors for Industrial Applications

Industrial & Environmental Monitoring

For professional use, EXP-Tech offers rugged water sensors designed for industrial applications. We carry conductivity sensors with IP68 protection and an RS485 interface, as well as LoRaWAN leak sensors for wireless monitoring of distributed systems. The Sensorex process sensors (S272CD) are designed for continuous use in industrial process environments.

FAQ – Frequently Asked Questions About Water Sensors

The term water sensor encompasses various sensor types related to water: Leakage sensors detect water leaks, flow sensors measure flow rate, and water quality sensors monitor parameters such as pH, conductivity, and turbidity. Depending on the application, different measurement principles and interfaces are used.

A leak sensor, or water leak sensor, detects unintended water leakage and triggers an alarm. Typical applications include server rooms, data centers, utility rooms, industrial facilities, and basements. LoRaWAN leak sensors, such as the Dragino LWL02, transmit the alarm wirelessly—even over long distances without a Wi-Fi infrastructure.

A conductivity sensor measures the electrical conductivity of water, which depends on the concentration of dissolved ions. The higher the conductivity, the more ions—and thus potentially more contaminants—are dissolved in the water. Conductivity sensors are used in drinking water monitoring, wastewater treatment, and industrial process control.

An ORP (oxidation-reduction potential) sensor measures the electrical potential of the water and provides information about its oxidizing capacity. A high ORP value indicates good disinfection effectiveness—relevant for swimming pools, drinking water treatment, and industrial cooling circuits.

A turbidity sensor optically measures the amount of suspended solids in the water—it emits light and measures the scattering. A conductivity sensor, on the other hand, electrically measures the ion concentration. Both provide different information about water quality and are often used in combination.

The Sensorex lab sensors and Dragino DR probes with an RS485 interface can be integrated into Arduino and ESP8266 projects using appropriate adapters. The Dragino LoRaWAN modules are standalone units that can be integrated into IoT platforms.

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