DDG-3080 Industrial Conductivity Meter

Short Description:

★ Multiple function: conductivity, output current, temperature, time and status
★ Features: Automatic temperature compensation, high price-performance ratio
★Application: thermal power plant, chemical fertilizer, chemical industry, metallurgy, pharmacy.

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Product Detail

Technical Indexes

What is Conductivity?

Manual

Features

It has a complete English display and friendly interface. Various parameters can be displayed at the same time: conductivity, output current, temperature, time and status. Bitmap type liquid crystal display module with high resolution is adopted. All the data, status and operation prompts are displayed in English. There is no symbol or code that is defined by the manufacturer.

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Conductivity measuring range	0.01~20μS/cm (Electrode: K=0.01)
	0.1~200μS/cm (Electrode: K=0.1)
	1.0~2000μS/cm (Electrode: K=1.0)
	10~20000μS/cm (Electrode: K=10.0)
	30~600.0mS/cm (Electrode: K=30.0)
Intrinsic error of the electronic unit	conductivity: ±0.5％FS, temperature: ±0.3℃
Range of automatic temperature compensation	0~199.9℃, with 25℃ as the reference temperature
Water sample tested	0~199.9℃, 0.6MPa
Intrinsic error of the instrument	conductivity: ±1.0％FS, temperature: ±0.5℃
Automatic temperature compensation error of the electronic unit	±0.5％FS
Repeatability error of the electronic unit	±0.2％FS±1 Unit
Stability of the electronic unit	±0.2％FS±1 unit/24h
Isolated current output	0~10mA ( load<1.5kΩ)
Isolated current output	4～20mA (load<750Ω) (double-current output for optional)
Output current error	≤±l％FS
Error of electronic unit caused by ambient temperature	≤±0.5％FS
Error of the electronic unit caused by the supply voltage	≤±0.3％FS
Alarm relay	AC 220V, 3A
Communication interface	RS485 or 232 (optional)
Power supply	AC 220V±22V, 50Hz±1Hz, 24VDC (optional)
Protection grade	IP65 , aluminium shell suitable for outdoor use
Clock accuracy	±1 minute/month
Data storage capacity	1 month (1 point/5 minutes)
Saving time of data under a continuous power-failure condition	10 years
Overall dimension	146 (length) x 146 (width) x 150 (depth) mm; dimension of the hole: 138 x 138mm
Working conditions	ambient temperature: 0~60℃; relative humidity <85％
Weight	1.5kg
The conductivity electrodes with the following five constants are usable	K=0.01, 0.1, 1.0, 10.0, and 30.0.

Conductivity is a measure of water’s capability to pass electrical flow. This ability is directly related to the concentration of ions in the water
1. These conductive ions come from dissolved salts and inorganic materials such as alkalis, chlorides, sulfides and carbonate compounds
2. Compounds that dissolve into ions are also known as electrolytes 40. The more ions that are present, the higher the conductivity of water. Likewise, the fewer ions that are in the water, the less conductive it is. Distilled or deionized water can act as an insulator due to its very low (if not negligible) conductivity value. Sea water, on the other hand, has a very high conductivity.

Ions conduct electricity due to their positive and negative charges

When electrolytes dissolve in water, they split into positively charged (cation) and negatively charged (anion) particles. As the dissolved substances split in water, the concentrations of each positive and negative charge remain equal. This means that even though the conductivity of water increases with added ions, it remains electrically neutral 2.

DDG-3080 conductivity Meter User Manual

Conductivity Analyzer