UMA Industries manufactures and supplies the Conductivity / TDS Sensor for online water quality monitoring in RO plants, aquaculture, industrial process systems and laboratory applications. This Conductivity / TDS Sensor is designed for continuous measurement of electrical conductivity, which helps users estimate TDS from dissolved ions in water and observe changes in water quality over time. It is a practical fit where regular manual sampling is not enough and a stable, compact online probe is preferred.
For control-panel builders, maintenance teams and OEM users, the Conductivity / TDS Sensor is useful because it can be integrated with Arduino, Raspberry Pi, PLC and microcontroller-based systems. That makes it suitable for both industrial monitoring and educational or prototype setups where conductivity data is required in a simple format for display, logging or decision-making. The sensor is especially relevant where the water condition may change due to mixing, dosing, filtration or process variation.
Applications for the Conductivity / TDS Sensor
The Conductivity / TDS Sensor is widely used in RO and water treatment plants, aquaculture and fish farming, industrial process monitoring and laboratory testing. In RO systems, conductivity monitoring helps check feed water and treated water quality. In aquaculture, it supports regular observation of water conditions. In process industries, it can help track dissolved ion changes that may indicate contamination, salt build-up or shifts in raw-water quality. In laboratories, it is a simple way to monitor ionic concentration trends in test solutions.
This sensor is selected when the buyer needs an online conductivity cell rather than a one-time handheld reading. If the application involves a control cabinet, test bench, skid-mounted water-treatment unit or a small embedded project, the same basic sensor can be adapted according to the controller, display or interface used by the customer. The key is to match the sensor range and output handling with the actual process requirement.
Where buyers typically use this sensor
Typical use cases include RO pre-treatment, treated-water monitoring, circulating water checks, chemical dosing verification, pilot plants and experimental water systems. Buyers in these areas often want a compact probe that can work continuously and provide a repeatable conductivity signal. Since the measurement reflects the ionic content of water, it is helpful for observing changes caused by dissolved salts and minerals.
If you are comparing this sensor with related instrumentation, you may also review TDS meter Modbus RTU RS485 for connected monitoring, Dosing Pump Timer for timed dosing coordination, PH Sensor Lab Glass 1 Meter Cable for pH-side measurement and Digital Humidity Meter for environmental checks in the same installation.
Technical overview
The Conductivity / TDS Sensor measures electrical conductivity, usually expressed in µS/cm. Conductivity changes according to the concentration of dissolved ions such as salts, minerals and metal ions. When the ion concentration rises, water conducts electricity more easily and the conductivity reading increases. When the ion concentration falls, conductivity decreases. TDS is the estimated total dissolved solids value expressed in ppm, but the sensor itself measures conductivity rather than the full chemical composition of the water.
Verified product facts: measurement range 000 to 9999 µS/cm, resolution 1 µS/cm, tolerance ±1%, output signal sine wave, operating voltage 5 V DC, sensor size 16 × 110 mm and body material PP / ABS. These facts make the product suitable for low-voltage sensing arrangements where a compact online probe is needed. The PP / ABS body is appropriate for industrial use where a durable sensor body is preferred for handling and installation.
For system design, it is important to understand that conductivity and TDS are related but not identical. Conductivity is measured directly, while TDS is calculated from conductivity using a conversion factor. That conversion factor depends on the type of dissolved salts in the water. As a result, users should treat TDS as an estimated value and not as a full laboratory chemical analysis.
Selection guidance before you order
Choose the Conductivity / TDS Sensor based on the water type, target monitoring range, controller compatibility and installation method. The 000 to 9999 µS/cm range is useful for broad process observation in RO, industrial and laboratory settings. If the installation will be used with an Arduino, Raspberry Pi or PLC, confirm the supply voltage and signal-conditioning arrangement before finalizing the panel design. The sensor’s compact size also makes it easier to consider for smaller housings and control cabinets.
When preparing a quotation or proforma invoice, the size, capacity, internal and external dimensions, power supply, optional controls or accessories, delivery schedule and mode of transport may be finalized or changed according to customer requirements. Published prices on the website are company-confirmed. That flexibility is helpful when the sensor has to match a specific controller, enclosure or mounting arrangement, especially in OEM or project-based orders.
For buyers who need a broader water-monitoring package, selection should also consider whether the site requires only conductivity reading or whether pH, dosing, humidity or count-based functions are also part of the same installation. Selecting the right combination at quotation stage can reduce commissioning changes later and help the final system work as intended.
Operation of the Conductivity / TDS Sensor
The sensor operates by measuring how readily water conducts electricity. Since dissolved ions carry charge, their presence affects the measurement. More ions usually mean higher conductivity; fewer ions usually mean lower conductivity. The sensor output can then be read by a controller or signal-conditioning circuit and converted into a display or control action by the customer’s system.
For accurate online use, the sensor should be installed according to the flow and mounting requirements of the application. Stable water contact and proper positioning help the reading remain more consistent. In practical systems, sudden bubbles, poor immersion, excessive turbulence or incorrect mounting can all affect the reading. Users should therefore install the probe in a location where the water sample is representative of the process they want to monitor.
The this product is intended for continuous measurement, so it is better suited to real-time monitoring than occasional spot checks. In RO plants and process systems, continuous observation can help the operator notice a change early and take action before the water condition drifts too far from the expected range.
Calibration and verification
Like other conductivity measurement setups, this product should be checked against standard conductivity solutions such as 1413 µS/cm or 5000 µS/cm, depending on the expected measurement band and the customer’s procedure. Routine verification is useful after installation, after cleaning and whenever readings drift from the expected process pattern. If the application uses a TDS display, the conversion factor should also be selected according to the dissolved salts present in the water.
Calibration is not only a one-time activity. It is part of good operating practice whenever the sensor is used in changing water conditions, after maintenance or after long service intervals. A clean probe and a verified reference solution improve confidence in the reading and help the user compare current values with previous data.
Maintenance, cleaning and handling
Basic maintenance helps keep the this product stable in service. Users should inspect the probe body, cable, connector area and mounting arrangement at regular intervals. If scale, dirt or residue builds up on the sensing area, the reading may become less representative of the water sample. Cleaning should be gentle and should not damage the PP / ABS body or the sensing surface. Rough tools and aggressive handling should be avoided.
For best results, avoid unnecessary force on the cable and prevent unplanned exposure to chemicals that are not compatible with the installation. When the sensor is used in industrial water or aquaculture systems, periodic inspection is especially important because deposits and changing water chemistry can affect consistency over time. If the installation includes a controller or transmitter, confirm after maintenance that scaling and calibration values are still appropriate.
In many installations, a simple maintenance routine works well: check for visible deposits, clean carefully if needed, rinse with suitable water, reinstall correctly and verify the reading against a known standard when required. This routine supports stable operation without complicating the user’s process.
Manufacturing, supply and support
This this product is manufactured at UMA Industries’ unit in Village Sunped, Ballabgarh, Faridabad, Haryana, India. UMA Industries supplies and provides technical support to customers across India. That support is useful for OEM builders, plant maintenance teams, water-treatment installers and laboratory users who need guidance on selection or integration.
Ready-stock compact products, controllers, spares and accessories may be dispatched by air courier within 3 working days, subject to availability, payment confirmation, destination serviceability and carrier schedules. Delivery timelines for complete salt spray chambers and other large equipment are confirmed separately according to model, capacity, packing and freight mode. For this sensor, the actual dispatch method depends on stock and serviceability at the time of order, and no guaranteed delivery promise is implied.
For customers planning a larger panel or a mixed instrumentation order, it is helpful to finalize the sensor range, signal path and mounting position along with the rest of the system. This reduces confusion at commissioning and makes it easier to match the sensor with the intended controller or display.
How this sensor compares with common system needs
Buyers often compare conductivity probes with pH sensors, dosing timers and humidity instruments while building a broader monitoring system. The this product focuses on dissolved ions in water, so it complements rather than replaces other instruments. Conductivity data can show a rising salt load or a change in dissolved matter, while pH helps show acidity or alkalinity changes in the same process.
If your panel design includes multiple instruments, you may also review Humidity Sensor for environmental monitoring and Digital Counter if your panel application needs a separate count or tally function. Using compatible devices in one system helps reduce confusion during commissioning and service.
Frequently asked questions
1. Does the Conductivity / TDS Sensor measure TDS directly?
No. The sensor measures electrical conductivity in µS/cm. TDS is estimated from that conductivity reading using a conversion factor suited to the dissolved salts in the water.
2. What is the output of this sensor?
The verified output signal is a sine wave. That makes the sensor suitable for signal-conditioning circuits and systems where the controller or interface is designed to read this type of sensor output.
3. What supply voltage is required?
The sensor operates on 5 V DC, which is useful for many low-voltage embedded and controller-based setups.
4. What applications is the sensor used for?
It is commonly used in RO plants, water treatment systems, aquaculture, industrial process monitoring and laboratory applications where continuous water quality observation is needed.
5. Can I use this sensor with Arduino or Raspberry Pi?
Yes. The sensor is suitable for Arduino, Raspberry Pi, PLC and microcontroller-based systems, provided the interface and signal-conditioning arrangement match the project design.
6. What is the measurement range?
The verified range is 000 to 9999 µS/cm, with 1 µS/cm resolution and ±1% accuracy / tolerance.
7. Does the sensor detect pesticides or all contaminants?
No. Conductivity and TDS readings reflect ionic substances in water. Many non-ionic contaminants are not detected by conductivity measurement alone.
8. Does the sensor require calibration?
Yes. Routine calibration or verification against standard conductivity solutions is recommended so that the sensor stays aligned with the expected process range.
9. What should I check before requesting a quotation?
Confirm the application, expected conductivity band, controller type, mounting arrangement, signal interface and any accessory requirements. This helps the quotation match the actual system requirement more closely.
10. Is this sensor suitable for continuous online use?
Yes. The this product is intended for online monitoring, so it suits installations where water quality must be observed continuously rather than only during manual sampling.
For quotation, integration guidance or bulk supply, contact UMA Industries at 9310530941 or 8178668698. If you need a dependable online probe for conductivity-based water monitoring, the this product is a practical option for control panels, RO systems and industrial water applications.
this product is supplied with the final configuration recorded in the customer quotation or proforma invoice.
Selection Guidance for Conductivity / TDS Sensor
Use the verified product configuration, installation conditions and required control functions when selecting Conductivity / TDS Sensor.
Conductivity / TDS Sensor is supplied with the final configuration recorded in the customer quotation or proforma invoice.
Conductivity / TDS Sensor is supplied with the final configuration recorded in the customer quotation or proforma invoice.
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