Understanding the Basics of Conductivity Measurement

Conductivity meters are essential tools used in various industries to measure the ability of a solution to conduct electricity. This measurement is crucial in determining the purity and concentration of a solution, making conductivity meters a valuable instrument in quality control processes. Understanding the principle behind conductivity meters is essential for anyone working in industries where accurate measurement of conductivity is required.

The principle of conductivity measurement is based on the fact that ions in a solution carry electrical charge and can conduct electricity. When an electric current is passed through a solution, the ions in the solution will move towards the electrodes, creating an electrical current. The conductivity of the solution is directly proportional to the concentration of ions present in the solution. Therefore, by measuring the electrical conductivity of a solution, one can determine the concentration of ions in the solution.

Conductivity meters work by measuring the electrical conductivity of a solution using a pair of electrodes. These electrodes are typically made of a conductive material such as platinum or graphite and are immersed in the solution being tested. When an electric current is passed through the electrodes, the ions in the solution will move towards the electrodes, creating an electrical current. The conductivity meter measures this current and converts it into a conductivity value, which is then displayed on the meter.

One of the key components of a conductivity meter is the conductivity cell, which houses the electrodes and allows for the measurement of conductivity. The conductivity cell is designed to minimize interference from external factors such as temperature and pressure, ensuring accurate and reliable measurements. Some conductivity meters also come equipped with temperature compensation features to account for changes in temperature that may affect the conductivity of the solution.

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

In order to accurately measure conductivity, it is important to calibrate the conductivity meter regularly. Calibration ensures that the meter is providing accurate and reliable measurements, allowing for consistent results. Conductivity meters can be calibrated using standard solutions with known conductivity values, allowing for the meter to be adjusted to provide accurate readings.

Conductivity meters are used in a wide range of industries, including water treatment, pharmaceuticals, food and beverage, and chemical manufacturing. In the water treatment industry, conductivity meters are used to monitor the purity of water and ensure that it meets regulatory standards. In the pharmaceutical industry, conductivity meters are used to measure the concentration of ions in drug formulations, ensuring the quality and efficacy of the product. In the food and beverage industry, conductivity meters are used to monitor the quality of beverages and ensure that they meet quality standards.

In conclusion, conductivity meters are essential tools for measuring the conductivity of solutions in various industries. By understanding the principle behind conductivity measurement and how conductivity meters work, one can appreciate the importance of these instruments in ensuring the quality and purity of solutions. Regular calibration and maintenance of conductivity meters are crucial to obtaining accurate and reliable measurements, making them indispensable tools in quality control processes.

Applications and Benefits of Using a conductivity meter in Various Industries

Conductivity meters are widely used in various industries to measure the ability of a solution to conduct an electric current. This measurement is crucial in determining the purity and concentration of a solution, making conductivity meters an essential tool for quality control and process monitoring. In this article, we will explore the principle of conductivity meters and their applications and benefits in different industries.

Product Model	MFC-8800
Communication port	The uplink slave channel Modbus RTU protocol RS485 port is connected with DTU and DCS
	Downlink master channel RS485 port of Modbus RTU protocol is connected with data acquisition terminal
4~20mA output	1 channel two-wire type  Maximum loop resistance 400Ω
4~20mA Input	2 channel channel two-wire type（ initiative feed）
DI Input	2channels Photoelectric isolation logic switch
DO Output	3 channels relay	1 SPDT  AC220V； 3A(MAX)
	（only for drive signal）	2 SPST  AC220V； 3A(MAX)
	1channel  Photoelectric switch	Proportional pulse/frequency
		Load capacity：100mA/DC30V
Data acquisition	Data acquisition collection，with 3 channels DC24V sensor power supply
Display mode	3.5”（or 4”）colorful LCD touch screen
Power supply	Wide power range ：（12-24）V
Consumption	<5W
Environment requirements	Environment temp：（5~45）℃；  relative humidity：≤90%。
Hole dimension	（91×91）mm hole dimension；panel dimension（100*100）mm

The principle of conductivity meters is based on the fact that ions in a solution can carry an electric current. When an electric field is applied to a solution, the ions will move towards the electrodes, creating a flow of electric current. The conductivity of the solution is directly proportional to the concentration of ions present in the solution. By measuring the conductivity of a solution, one can determine its purity and concentration.

One of the key applications of conductivity meters is in the water treatment industry. Water conductivity is a crucial parameter in determining the quality of water. High conductivity levels can indicate the presence of impurities or contaminants in the water, while low conductivity levels can indicate the absence of dissolved solids. Conductivity meters are used to monitor the conductivity of water in treatment plants, ensuring that the water meets the required quality standards.

In the pharmaceutical industry, conductivity meters are used to monitor the purity of pharmaceutical solutions. Conductivity measurements are essential in ensuring that pharmaceutical solutions are properly formulated and free from impurities. By measuring the conductivity of pharmaceutical solutions, manufacturers can ensure the quality and efficacy of their products.

In the food and beverage industry, conductivity meters are used to monitor the concentration of dissolved solids in food and beverage products. Conductivity measurements are crucial in ensuring the consistency and quality of food and beverage products. By measuring the conductivity of food and beverage products, manufacturers can ensure that their products meet the required standards and specifications.

In the chemical industry, conductivity meters are used to monitor the concentration of chemicals in solutions. Conductivity measurements are essential in controlling chemical processes and ensuring the quality of chemical products. By measuring the conductivity of chemical solutions, manufacturers can optimize their processes and ensure the quality of their products.

Overall, conductivity meters play a crucial role in various industries by providing accurate and reliable measurements of solution conductivity. These measurements are essential in ensuring the quality and purity of products, as well as in optimizing processes and monitoring performance. Conductivity meters are versatile tools that are widely used in industries such as water treatment, pharmaceuticals, food and beverage, and chemicals. By understanding the principle of conductivity meters and their applications and benefits, industries can make informed decisions and improve their processes and products.