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Portable Insulator Salt Density Tester |
GB/T 5582—93 "External Insulation Pollution Classes for High-Voltage Power Equipment"
II. Portable Salt Density Tester Terminology
Equivalent Salt Deposit Density: refers to the solute density of a contaminant solution equivalent to the same conductivity as a sodium chloride solution, usually expressed in Kg/ .
Creepage Distance Ratio of Insulator: the total creepage distance L of the insulator divided by the product of the test voltage and ; it is usually expressed in mm/kV.
Pollution Layer: the conductive electrolytic layer on the insulator surface composed of salt and inert materials.
Salt Deposit Density (SDD): the amount of salt deposited on a given surface of the insulator (metal parts and cemented materials are not included in this surface) divided by the area of that surface; it is usually expressed in mg/.
III.Introduction
SDMD-II, also known as the direct-reading equivalent salt density tester (salt density meter), is specifically designed for testing the equivalent salt density of insulators. The system has a built-in formula for calculating the equivalent salt density of insulators, providing intuitive readings. It uses a Chinese menu for simple operation. The large-screen LCD displays all parameters and results at a glance. It is equipped with a large-capacity lithium battery, making it convenient for field testing.
The instrument complies with the provisions and requirements of GB/T 16434—1996 "Environmental Pollution Classification and External Insulation Selection for High-Voltage Overhead Lines and Power Plants, Substations", and is suitable for salt density testing of external insulation equipment in high-voltage overhead lines, power plants, substations, and other locations.
IV.Performance Indicators
Technical Parameters:
●Measurement Range
Electrode constant 1 Conductivity 0.1μs/cm~20ms/cm
Electrode constant 10 Conductivity 2ms/cm~200ms/cm
Temperature Measurement Range Temperature 0℃～100℃
●Measurement Error
Conductivity 1% (Class 1) Temperature ±0.1℃
Equivalent Salt Deposit Density 1% (Class 1)
Note: When testing low-concentration solutions, select an electrode with a small electrode constant K; when testing high-concentration solutions, select an electrode with a large electrode constant K. For detailed selection, refer to the random accessories section.
4.3 Display Output Mode
A. LCD displays measurement results.
B. Measurement data can be directly output via computer.
C. Upload to computer via data cable for processing.
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