A tagline about what a conductivity meter measures: “Measuring the flow of electrical currents in liquids.”

Understanding the Basics of Conductivity Measurement

Conductivity meters are essential tools 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, as well as monitoring the overall quality of water in different applications. Understanding how conductivity meters work and what they measure is essential for anyone working in fields such as water treatment, pharmaceuticals, agriculture, and environmental monitoring.

Conductivity meters operate on the principle that ions in a solution carry an electric charge and can conduct electricity. When an electric current is passed through a solution, the ions in the solution will move towards the electrodes, allowing the current to flow. The conductivity of the solution is directly proportional to the concentration of ions present in the solution. Therefore, a higher concentration of ions will result in a higher conductivity reading.

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

One of the key advantages of using a conductivity meter is its ability to provide a quick and accurate measurement of the ionic content of a solution. This is particularly useful in industries where the purity of a solution is critical, such as in pharmaceutical manufacturing or water treatment plants. By measuring the conductivity of a solution, operators can quickly determine if the solution meets the required standards and take corrective action if necessary.

Conductivity meters are also commonly used in environmental monitoring to assess the quality of water in rivers, lakes, and oceans. High levels of conductivity in water can indicate the presence of pollutants or contaminants, which can have harmful effects on aquatic life and human health. By regularly monitoring the conductivity of water bodies, environmental scientists can identify potential sources of pollution and take steps to mitigate their impact on the environment.

In agriculture, conductivity meters are used to measure the nutrient levels in soil and irrigation water. By measuring the conductivity of the soil or water, farmers can determine the concentration of essential nutrients such as potassium, calcium, and magnesium. This information is crucial for optimizing crop growth and ensuring that plants receive the nutrients they need to thrive.

When using a conductivity meter, it is important to calibrate the instrument regularly to ensure accurate and reliable measurements. Calibration involves comparing the readings of the meter with known standards of conductivity to verify its accuracy. Conductivity meters can be calibrated using standard solutions with known conductivity values, such as potassium chloride solutions.

Measurement range	N,N-Diethyl-1,4-phenylenediamine (DPD) spectrophotometry
Model	CLA-7112	CLA-7212	CLA-7113	CLA-7213
Inlet channel	Single channel	Double channel	Single channel	Double channel
Measurement range	Free chlorine：(0.0-2.0)mg/L ,Calculated as Cl2;		Free chlorine:(0.5-10.0)mg/L ,Calculated as Cl2;
	pH：（0-14）；Temperature：（0-100）℃
Accuracy	Free chlorine:±10% or ±0.05mg/L(take the large value),Calculated as Cl2;		Free chlorine:±10% or±0.25mg/L(take the large value),Calculated as Cl2;
	pH:±0.1pH；Temperature：±0.5℃
Measurement Period	≤2.5min
Sampling interval	The interval (1～999) min can be set arbitrarily
Maintenance cycle	Recommended once a month (see maintenance chapter)
Environmental requirements	A ventilated and dry room without strong vibration;Recommended room temperature：（15～28）℃；Relative humidity：≤85%（No condensation）
Water sample flow	（200-400） mL/min
Inlet pressure	（0.1-0.3） bar
Inlet water temperature range	（0-40）℃
Power supply	AC (100-240)V； 50/60Hz
Power	120W
Power connection	The 3-core power cord with plug is connected to the mains socket with ground wire
Data output	RS232/RS485/（4～20）mA
Size	H*W*D：（800*400*200）mm

In conclusion, conductivity meters are valuable tools for measuring the ionic content of solutions in various industries. By understanding how conductivity meters work and what they measure, operators can ensure the quality and purity of their products, protect the environment, and optimize agricultural practices. Regular calibration of conductivity meters is essential to maintain accurate measurements and ensure the reliability of the data collected. Conductivity meters play a crucial role in ensuring the safety and quality of products and environments, making them indispensable tools for professionals in a wide range of fields.