Water Quality Sodium Ion Sensor, 0~2300 ppm

SKU: SUCH-WQS-Sodium
$1,043.97
● 0~2300 ppm (mg/L) ● Sodium ion ● RS485, 4–20 mA ● Electrode method
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🕒 Delivery date: 6-12 days
🔁 30-day Returns
Overview

Designed with a highly sensitive glass membrane electrode method, this water quality sodium ion sensor accurately measures sodium ion concentrations from 0 to 23,000 ppm. It supports optional RS485 and 4–20 mA signal outputs, features an IP68 protection rating, and utilizes a corrosion-resistant ABS/PC housing. Suitable for long-term online use, the sodium sensor meets diverse application needs including drinking water, industrial water, and environmental monitoring.

Feature

Sodium sensor feature

  • Digital water quality sensors directly output RS485/4-20mA digital signals and support MODBUS/RTU communication protocols.
  • The water quality sensor incorporates automatic calibration functionality, low power consumption, and internal circuitry designed for interference resistance.
  • It is able to perform real-time monitoring and data analysis, featuring high stability and reliability for sustained long-term monitoring.
  • The SUCH sodium ion sensor features a simple internal structure, facilitating easy disassembly and cleaning for convenient user maintenance and upkeep.

Dimension (unit: mm)

Sodium sensor dimension

Maintenance and Care Guidelines

  1. After rinsing the sodium sensor electrode, only use soft paper towels to absorb moisture. Do not rub the sensitive membrane.
  2. For short-term storage, the electrode must be fitted with its protective cap. The cap must contain diluted nitrate ion standard solution (0.001M or 10ppm) for immersion.
  3. For overnight or extended storage, clean the electrode, dry it thoroughly, and return it to its original packaging.
  4. Keep the cable connector clean and free from moisture or water ingress.
  5. If white potassium chloride crystals accumulate on the electrode, this salt deposit does not affect performance. Simply rinse the electrode with deionized water to remove the crystals, then blot dry.

Modbus Troubleshooting

Issue Possible Causes Solutions
Modbus Not Responding Baud rate or parity mismatch with Modbus master device settings Verify that settings match Modbus master device configuration. Ensure Modbus master device parity is set to None.
Faulty RS485 cable Replace/Inspect Cables
Missing network offset termination, or improper network offset and termination Check termination or offset settings on all network devices. Only network endpoints should be enabled, and one point on the network should provide offset.
Incorrect slave address, or slave address conflicts with another device on the same bus Verify all addresses are unique and fall within the range 1–255.
Abnormal Modbus Response Unsupported register Confirm support for the requested register.
Invalid data type Verify the requested register data type matches the Modbus master device request. For example: Do not use a 2-byte integer to request floating-point data. Requesting floating-point data (2 registers / 4 bytes) requires requesting both registers simultaneously.
Specs
Measurement Range 0~23000 ppm
pH Range >9 pH
Measurement Principle Electrode method
Resolution 0.001 ppm
Measurement Accuracy ±5%FS
Supply Voltage DC 9–30 V (recommended 12 V)
Output Signal RS485, 4–20 mA
Withstand Voltage Range 0–0.3 bar
Housing Material ABS, PC
Thread Specification 3/4″, M39×1.5
Temperature Range 0~60 °C
Slope 56 ± 4 mV (25 °C)
Known Interference Hydrogen ions, Potassium ions
Repeatability ±4%
Protection Rating IP68
Membrane Resistance <50 MΩ
Sensing Element Glass membrane
Electrical Connection Plug-in type
Mounting Method Immersion type
Cable Length 5m, other lengths customizable
Application

Water quality sensor for drinking water

Drinking Water

Water supply system monitoring

Water Supply System Monitoring

Water quality sensor for seawater desalination

Seawater Desalination

FAQ

These water quality sodium sensors typically operate on ion-selective electrode principles. A selectively permeable membrane generates potential changes in response to sodium ions, converting these into electrical signals. The signal correlates with sodium ion concentration, enabling continuous and accurate online monitoring when paired with a transmitter.

Water quality sodium sensors are primarily used to monitor sodium ion concentrations in water. They are commonly found in drinking water treatment, boiler feedwater, deionized water systems, and the pharmaceutical and electronics industries. By continuously measuring sodium levels, they detect water contamination or ion exchange resin failure, ensuring water safety and system stability.

The sodium ion sensor is an indispensable piece of equipment in modern industrial production. It enables real-time monitoring of sodium ion concentration during production processes, providing critical data for process control and optimization.

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