The Impact of Price on TDS Controller Performance

Total Dissolved Solids (TDS) controllers are essential devices used in various industries to monitor and regulate the concentration of dissolved solids in water. These controllers play a crucial role in ensuring water quality and preventing equipment damage caused by high TDS levels. However, the price of TDS controllers can vary significantly depending on various factors, including brand, features, and quality.

One of the primary factors that influence the price of a TDS Controller is the brand. Well-known brands that have a reputation for producing high-quality and reliable products often come with a higher price tag. These brands invest in research and development to ensure that their controllers meet industry standards and provide accurate readings. While the initial cost of purchasing a TDS Controller from a reputable brand may be higher, the long-term benefits of reliability and durability can outweigh the upfront expense.

Another factor that affects the price of a TDS Controller is the features it offers. Basic TDS controllers that provide simple monitoring and control functions are typically more affordable than controllers with advanced features such as data logging, alarm systems, and remote monitoring capabilities. The additional features can enhance the performance and functionality of the controller, but they also come at a higher cost. It is essential to consider the specific needs of your application and determine which features are necessary to ensure optimal performance.

Model No. CIT-8800 Inductive Conductivity / Concentration Online Controller
Measurement range Conductivity 0.00μS/cm ~ 2000mS/cm
Concentration 1.NaOH,(0-15)% or(25-50)%;
2.HNO3(note the Corrosion resistance of the sensor)(0-25)% or(36-82)%;
3.User-defined concentration curves.
TDS 0.00ppm~1000ppt
Temp. (0.0 ~ 120.0)℃
Resolution Conductivity 0.01μS/cm
Concentration 0.01%
TDS 0.01ppm
Temp. 0.1℃
Accuracy Conductivity 0μS/cm ~1000μS/cm ±10μS/cm
1 mS/cm~500 mS/cm ±1.0%
500mS/cm~2000 mS/cm ±1.0%
TDS 1.5 level
Temp. ±0.5℃
Temp. compensation element Pt1000
range (0.0~120.0)℃ linear compensation
(4~20)mA Current output channels Double channels
features Isolated, adjustable, reversible, 4-20MA output, instruments/ transmitter mode.
Loop resistance 400Ω(Max),DC 24V
Resolution ±0.1mA
Control contact Channels Triple channels
Contact Photoelectric relay output
Programmable Programmable ( temperature 、conductivity/concentration/TDS、timing)output
Features Could set temperature、conductivity/concentration/TDS、 timing NO/NC/ PID selection
Resistance load 50mA(Max),AC/DC 30V(Max)
Data communication RS485,MODBUS protocol
Power supply DC 24V±4V
Consumption <5.5W
Working environment Temperature:(0~50)℃ Relative Humidity:≤85%RH(non- condensing )
Storage Temperature:(-20~60)℃ Relative Humidity:≤85%RH(non- condensing)
Protection level IP65(with rear cover)
Outline dimension 96mm×96 mm×94mm (H×W×D)
Hole dimension 91mm×91mm(H×W)
Installation Panel mounted , fast installation

The quality of the materials used in manufacturing the TDS Controller also plays a significant role in determining its price. Controllers made from high-quality materials that are resistant to corrosion and wear are likely to be more expensive than controllers made from lower-quality materials. Investing in a TDS Controller made from durable materials can help extend its lifespan and reduce the need for frequent replacements, ultimately saving money in the long run.

When considering the price of a TDS Controller, it is essential to weigh the cost against the performance and reliability of the device. Cheaper controllers may be more budget-friendly upfront, but they may lack the accuracy and durability needed for critical applications. On the other hand, investing in a higher-priced controller from a reputable brand with advanced features and quality materials can provide peace of mind and ensure consistent performance over time.


In conclusion, the price of a TDS Controller is influenced by various factors, including brand, features, and quality. While it may be tempting to opt for a cheaper option to save money, it is crucial to consider the long-term benefits of investing in a high-quality controller that meets your specific needs. By carefully evaluating the price-performance ratio of different TDS controllers, you can make an informed decision that will ultimately benefit your operations and water quality management.

Constant 10.00cm-1 1.000cm-1 0.100cm-1 0.010cm-1
Conductivity (500~20,000) (1.0~2,000) (0.5~200) (0.05~18.25)
μS/cm μS/cm μS/cm MΩ·cm
TDS (250~10,000) (0.5~1,000) (0.25~100) ——
ppm ppm ppm
Medium Temp. (0~50)℃(Temp. Compensation : NTC10K)
Resolution Conductivity: 0.01μS/cm;0.01mS/cm
TDS: 0.01ppm
Temp.: 0.1℃
Accuracy Conductivity:1.5%(FS)
Resistivity: 2.0%(FS)
Analog Output Single isolated(4~20)mA,instrument/transmitter for selection
Control Output SPDT relay,Load Capacity: AC 230V/50A(Max)
Working Environment Temp: (0~50)℃;Relative humidity: ≤85%RH(none condensation)
Storage Environment Temp:(-20~60)℃; Relative humidity ≤85%RH(none condensation)
Power Supply DC 24V/AC 110V/AC 220V±15%(for selection)
Dimension 48mm×96mm×80mm (H×W×D)
Hole Size 44mm×92mm (H×W)
Installation Panel mounted, fast installation

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