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Home » Products » Transmitters » Conductivity / TDS Sensor for Reliable Water Quality Measurement

The Instrava conductivity and TDS sensor is designed for accurate and stable measurement of conductivity and total dissolved solids in water treatment and industrial process applications. With high linearity, fast response, and strong resistance to corrosion, the sensor delivers reliable performance for continuous online monitoring.
Key Benefits
High measurement accuracy and excellent linearity
Wide measurement range for conductivity and TDS
Stable performance with long service life
Cable resistance does not affect measurement accuracy
Suitable for standard use, customization, and OEM integration
Transmitters & Sensors Description
Why Choose This Conductivity / TDS Sensor
In water quality monitoring, unstable readings or poor linearity can lead to incorrect process control and unreliable data. Instrava’s conductivity and TDS sensor is engineered to provide consistent and repeatable measurements across a wide operating range.
For water treatment operators, system integrators, and OEM manufacturers, this sensor offers:
Reliable measurement unaffected by lead wire resistance
Consistent electrode coefficient for repeatable results
Fast response for real-time monitoring
Low maintenance requirements and long operational life


Conductivity / TDS Sensor Measurement Technology & Performance
The sensor features a well-matched electrode system with strong electrode coefficient consistency, ensuring high accuracy and linearity across different measurement ranges. Its design minimizes signal drift and maintains measurement stability even in long-term continuous operation.
The sensor supports both conductivity and TDS measurement, allowing flexible application in various water quality monitoring scenarios.
Performance Highlights
High accuracy and linear response over the full range
Fast response time for dynamic process conditions
Stable measurement unaffected by cable impedance
Durable construction for long-term industrial use
Conductivity / TDS Sensor Typical Applications & Use Scenarios
The conductivity / TDS sensor is suitable for a wide range of water-related applications:
Water & Wastewater Treatment
Monitoring conductivity and TDS in treatment processes, filtration systems, and effluent discharge.
Industrial Process Water
Control of conductivity levels in cooling water, boiler feed water, and process systems.
Environmental Water Monitoring
Continuous measurement of dissolved solids in surface water and discharge points.
OEM Water Quality Instruments
Integration into multi-parameter analyzers and automated monitoring systems.


Conductivity / TDS Sensor Reliability & Long-Term Operation
The sensor is designed for stable operation in corrosive and industrial environments. Its corrosion-resistant construction and optimized electrode design contribute to a long service life with minimal maintenance requirements.
With low signal drift and reliable temperature measurement, the sensor supports continuous online operation under demanding conditions.
Transmitters & Sensors Parameter
Measured Parameters
Conductivity
Total Dissolved Solids (TDS)
Conductivity Measurement Range
0.0–19.9 μS/cm
20–199 μS/cm
0.20–2.00 mS/cm
2.00–10.00 mS/cm
TDS Measurement Range
0.0–9.9 mg/L
10–99 mg/L
100–1000 mg/L
1000–5000 mg/L
Measurement Accuracy
Conductivity: ±1% FS
Temperature: ±0.5 °C
Temperature Range
0–60 °C
Temperature Sensor
NTC 2.252K
Pressure Range
≤1 MPa
Material
ABS
Ingress Protection
IP65
Dimensions
Ø26.7 × 160 mm
Ø12 × 120 mm
Instrava OEM/ODM
Reliable Instruments. Solutions That Fit Your Application.
Instrava is focused on delivering reliable industrial solutions through carefully curated products, application-driven optimization, and flexible customization. We select proven instruments from trusted manufacturers to ensure consistent quality, optimize solutions based on real working conditions to solve practical challenges, and provide tailored configurations to meet specific application needs.
By combining selection expertise with application understanding, Instrava helps customers reduce risk, improve efficiency, and achieve dependable results in complex industrial environments.

How does the sensor maintain measurement accuracy over a wide range?
The sensor uses a well-matched electrode system with strong electrode coefficient consistency, ensuring high linearity and accurate readings across multiple conductivity and TDS ranges.
Is the measurement affected by cable length or lead wire resistance?
No. The sensor design minimizes the influence of lead wire impedance, allowing accurate measurement even when installed at a distance from the controller.
Can the sensor measure both conductivity and TDS?
Yes. The sensor supports both conductivity and TDS measurement, making it suitable for various water quality monitoring and process control applications.
Is the sensor suitable for continuous online monitoring?
The sensor is designed for continuous operation with stable performance, fast response, and low signal drift, making it suitable for long-term online monitoring.
How does the sensor perform in corrosive or industrial environments?
The sensor features a corrosion-resistant construction and stable electrode design, enabling reliable operation and long service life in industrial water applications.
Does Instrava support customization or OEM integration for this sensor?
Instrava provides customization and OEM support, including measurement range selection, mechanical configuration, and system integration to meet specific project requirements.
Built on Consistency, Not Claims
We specialize in industrial analysis and detection, with a clear understanding of real-world operating environments and requirements.
Every instrument is evaluated based on performance, stability, and application suitability—not just specifications or pricing.
We work with trusted manufacturers to ensure stable supply, consistent quality, and dependable delivery.
Our recommendations are grounded in application understanding, helping customers avoid common issues and achieve reliable results.
Instrava is built to reduce uncertainty—so every decision you make is clearer, safer, and more reliable.

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