HOPEWELL Glass industry
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SD-800 4-Point Measuring Instrument for Sheet Resistivity Introduction
technical parameter Technical Parameter:
SD-800Characteristics：
1、High Precision
2、Automatic inductive contact control test mode
3、7 measurement ranges
4、Gold plated flexible test probe contact test
5、4.3 inches color touch screen operator interface; High precision、high resolution 0.001Ω/sq
6、It can store calibration and correction factor values, namely RCF values and practical additional functions.
7、Hold & Auto-hold Test Mode
8、USB communication port
9、There is Standard Sheet Resistance Calibration Box for optional selection.
10、Small and easy to carry.
SD-800 Theory:
SD-800 sheet resistivity instrument or 4-point Probe Measuring Instrument can also be called as Sheet Resistivity Measuring Instrument; It’s used for testing surface resistance of conductive coating on insulating material. It’s adopting the famous four probe measuring technology. It can realize reliable and precise testing for surface resistance of the conductor.
As the surface resistance is influenced by its thickness. If the material of the surface resistance is known, the resistance can be calculated.
SD-800 have high sensitivity, the tiny testing current can prevent the testing layer from damage.
SD-800Main Technical Specification：
Measurement Rang
Constant Current Test Output
0~0.2Ω
100mA
0~20Ω
10mA
0~2Ω
1mA
0~200Ω
0.1mA
0~2000Ω
0.05mA
0~20KΩ
0.005mA
0~200KΩ
0.005mA
Measurement Theory：4-Point Probe Theory
Max Measurement Tolerance： ＜0.2%（without probe）
＜3%（with probe，Typically2%）
Ambient Calibration Environment： 23℃±2℃
Memory：
Max storing 100 measurement data
Connection：
USB2.0
Working Environment：
0~50℃
torage Environment：
-10~65℃；80%RH
Power Supply：
100~240Vac ViaDC ADEPET
Internal Battery：
Optional
Life Span of Battery：
4~6HRS
Power Consumption：
Max18W
Display：
4.3 Inch TFT Touch Screen
Casing：
Portable Iron Sheet Casing
Dimension：
300*290*120mm
