EC TDS,Salinity Sensor | RS485 Communication, Easy Maintenance
- Simultaneous Measurement: Measures EC, TDS, and salinity online at the same time for comprehensive water quality monitoring.
- Split-type Design: Modular construction allows for easy maintenance and quick sensor replacement, reducing downtime.
- Reliable Communication: Supports RS485 interface with Modbus RTU protocol for stable data transmission and seamless integration.
- Flexible Installation: Suitable for both insertion and flow-through installation, adaptable to different water monitoring setups.
- Wide Application Range: Performs reliably in tap water, surface water, groundwater, and wastewater environments.
Overview
The WQS-EC sensor features a classic five-point interpolation algorithm, enabling simultaneous online measurement of electrical conductivity (EC), total dissolved solids (TDS), and salinity. It adopts a split-type (separated) design, making maintenance and replacement easy and convenient for users. With an RS485 communication interface and Modbus RTU protocol, the WQS-EC ensures seamless system integration and reliable data transmission. Designed for both insertion and flow-through installations, it provides stable and accurate measurements across various environments, including tap water, surface water, groundwater, and domestic wastewater. With its robust performance, user-friendly maintenance, and versatile application range, the WQS-EC sensor is an ideal solution for continuous water quality monitoring in diverse scenario. Click here to see what kind of TDS meter are most suitable for your situation.
Installation methods
flow cell
Install the conductivity electrode into the flow cell as shown below. Then secure the flow cell to the backing plate
Submerged
Sensors with an extended cable on the end can be directly submerged in water
4 types of connection available
The sensors are available with different tail connections so that customers can choose according to their needs.
WQS-EC-S01
IP65
5 pole aviation plug, cable length 2m with waterproof connection thread
WQS-EC-S11
IP68
Cable extending directly, cable length 6m with waterproof connection thread
WQS-EC-P01
IP65
5 pole aviation plug, cable length 2m
WQS-EC-P11
IP68
Cable extending directly, cable length 6m
Installation methods
flow cell
Install the conductivity electrode into the flow cell as shown below. Then secure the flow cell to the backing plate
Submerged
Sensors with an extended cable on the end can be directly submerged in water
| Specification | Details |
| Principle | Conductivity/ Total dissolved solids (TDS)/Salinity: Coaxial 4 graphite electrodes |
| Dimension | φ25×231 mm (φ0.984×9.094 inch, slightly different sizes for different interfaces) |
| Weight | 0.615 kg (Max. net weight) |
| Material | PVC-U (shell) |
| Power requirements | DC +12 - +24 V |
| Power | < 1 W |
| Installation | Flow-through, Submerged |
| Operating temperature | 2-50 °C (35.6-122 °F) |
| Storage temperature | 2-50 °C (35.6-122 °F) |
| Sensor cable length | Cable extending directly: 6 m (19.69 ft.), 5 pole aviation plugs: 2 m (6.56 ft.) Please contact us for other sizes |
| Communication method | Modbus RS485 |
| Sampling requirements | Temperature: 2-50 °C (35.6-122 °F) Flow rate: 250-500 mL/min; Pressure: no more than 1bar, in water flow at 2-50 °C (35.6-122 °F) |
| Warranty period | One year |
| WQS-D-L10-P05 | WQS-D-L05-P05 | |||||
| Parameters | Range | Resolution | Accuracy | Range | Resolution | Accuracy |
| COD | 0-500 mg/L | 0.01 mg/L | ±2.5% or±2.5 mg/L | 0-1000 mg/L | 0.01 mg/L | ±2.5% or±2.5 mg/L |
| TOC | 0-200 mg/L | 0.01 mg/L | ±2.5% or±2.5 mg/L | 0-400 mg/L | 0.01 mg/L | ±2.5% or±2.5 mg/L |
| BOD | 0-300 mg/L | 0.01 mg/L | ±2.5% or ±2.5 mg/L | 0-600 mg/L | 0.01 mg/L | ±2.5% or ±2.5 mg/L |
| TUR | 0-500 NTU | 0.01 NTU | ±2.5% or±5 NTU | 0-1000 NTU | 0.01 NTU | ±2.5% or±10 NTU |
| TSS | 0-500 mg/L | 1 mg/L | ±5% or ±5 mg/L | 0-1000 mg/L | 1 mg/L | ±5% or ±10 mg/L |
| Temperature | 0-60 °C | 0.0625 °C | ±1 °C | 0-60 °C | 0.0625 °C | ±1 °C |
| Model | Parameter | Range | Resolution | Accuracy |
| WQS-EC | EC | 0.001-200 000 μS/cm | Minimum 0.001 μS/cm | ±5% |
| TDS | 0.01-100 000 mg/L | Minimum 0.01 mg/L | ±5% | |
| Salinity | 0.01-120 000 mg/L | Minimum 0.01 mg/L | ±5% | |
| Temperature | 2-50 °C | 0.1 °C | ±1 °C |
