Product
NBL-WQ-EC
NBL-WQ-EC Online Conductivity Water Sensor:Drinking water / surface water / various water supply / industrial water treatment. Signal output: RS-485 (Modbus/RTU protocol). Convenient connection to third-party equipment such as PLC, DCS, industrial control computer, general controller, paperless recording instrument or touch screen. Immersion installation with 3/4 NPT pipe thread for easy submersible installation or installation in pipes and tanks. IP68 protection grade.
Description
Drinking water / Surface water / Various water supplies / Industrial wastewater treatment. Signal output: RS-485 (Modbus/RTU protocol). Convenient connection to third-party equipment such as PLC, DCS, industrial control computers, general controllers, paperless recorders or touch screens. Immersion installation with 3/4 NPT pipe thread for easy submersible installation or installation in pipelines and tanks. Protection rating IP68. 1. Application environment description - Drinking water / Surface water / Various water supplies / Industrial wastewater treatment. - Signal output: RS-485 (Modbus RTU protocol). - Convenient connection to PLC, DCS, industrial control computers, general controllers, paperless recorders or touch screens, etc. - Immersion installation with 3/4 NPT thread, suitable for easy submersible installation or installation in pipelines and tanks. - Protection level IP68. - Simultaneous output of conductivity and TDS for 0–20 μS/cm, 0–200 μS/cm. 2. Electrical connection The cable is a 4-core shielded twisted wire. Wiring definition: - Red wire — Power supply (12–24 VDC) - Black wire — Ground (GND) - Blue wire — 485A - White wire — 485B Before powering on, carefully check wiring sequence to avoid unnecessary losses caused by incorrect wiring. Wiring note: Since the cable will be immersed in water (including seawater) or exposed to air for long periods, all wiring points must be waterproofed, and user cables must have certain corrosion resistance. 3. Maintenance and care of conductivity sensor 3.1 Use and maintenance Conventional electrodes require periodic cleaning and calibration, with maintenance cycles determined by the customer according to working conditions. Cleaning method for conventional electrodes: use a soft brush to remove deposits (do not scratch the electrode surface), then rinse with distilled water and calibrate afterward. Cleaning method for inductive electrodes: - Inductive electrodes generally require no maintenance. Contamination or slight fouling on the outer housing does not affect normal operation. - If cleaning is required, use a soft brush or sandpaper to remove deposits, then rinse with distilled water and calibrate afterward. - Since inductive electrodes usually operate in environments prone to scaling or dirt accumulation, stronger cleaning force can be used. Minor scratches on the electrode surface will not affect normal operation, but avoid piercing the electrode housing. 3.2 Calibration a) Zero calibration: Rinse the sensor with distilled water and absorb liquid with filter paper. Place the sensor vertically in air and let it stabilize for about 3 minutes, then perform zero calibration. Calibration instructions are in the appendix. b) Slope calibration: Place the sensor vertically in a standard solution (20% of full scale to full scale), ensuring the sensor is at least 5 cm from the bottom of the container and 2 cm from the side walls, then perform slope calibration. Calibration instructions are in the appendix.
ManufacturerNiubol
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Frequently Asked Questions
- How do I succeed with my LoRaWAN project?
- Start by defining your use case, required sensor types, and coverage area. Verify that your chosen devices support the LoRaWAN class (A, B, or C) that fits your application — Class A for battery-powered sensors, Class C for always-on actuators. Make sure you have gateway coverage in your area — use a LoRaWAN field tester to verify signal strength and connectivity before deploying your devices. All devices in our catalogue are pre-certified for seamless integration with the Sensor-Online platform, which handles device provisioning, data routing, and visualization out of the box.
- How do I succeed with my wM-Bus project?
- wM-Bus (Wireless M-Bus) is the standard protocol for utility metering — water, heat, gas, and electricity. Key steps: select a compatible wM-Bus gateway or receiver, verify the transmission mode (T1, C1, or S1) supported by your meters, and confirm that your software can parse the meter telegrams. Our catalogue includes certified wM-Bus devices and gateways that integrate directly with the Sensor-Online platform, giving you a complete path from meter to dashboard.
- Does the product work with the Sensor-Online platform?
- Yes. All products in our catalogue are certified and tested with the Sensor-Online IoT platform. They support MQTT and REST API for straightforward integration, and configuration is done directly in the platform's web interface — no external software required. The devices also support Node-RED and n8n for advanced automation logic.
- Can I integrate the product with my existing system?
- Most of our products communicate via standard protocols such as MQTT, Modbus, HTTP/REST, or LoRaWAN, enabling integration with most SCADA, BMS, and ERP systems. We also offer custom integrations via our API. Contact us if you have a specific system you need to connect.
- Do I need programming skills to set up the device?
- No. Basic installation and configuration is done through the Sensor-Online web portal without any coding. For advanced automation flows using Node-RED or n8n, some technical understanding is helpful — but we provide ready-made flow templates and guides for the most common scenarios.
