RD800 4-Point Sheet Resistivity Meter Introduction

technical parameter Technical Parameter:

1. Introduction to the system
The RD-800 four-probe surface resistance measuring instrument is a surface sheet resistance measuring instrument adopting the principle of four-probe measurement. It’s mainly used for measuring the sheet resistance of the conductive film layer, such as flexible material conductive film, metal coating or thin film, ceramic or glass etc. and Semiconductor materials such as conductive films (ITO films) or substrate with nanocoating.
The RD-800 can be installed directly on the production line. The measuring probe has a built-in motor that can control the distance between the probe and the measured film layer through instructions. When the tested object is stopped under the RD-800, the RD-800 measurement probe can be controlled to contact the film layer through instructions. Then the sheet resistance of the film layer can be measured.
The RD-800 has an RS485 communication interface and can directly communicate with PCs, SCM, PLCs, etc..
PLC and PC can send measurement instructions directly to RD-800 through RS485, and RD-800 measurement data is returned after the measurement is completed.

2. System characteristics
1. High-precision measurements;
2. High-precision constant current loading measurement;
3. Probe can move according to instructions to achieve online automatic measurement;
4. Multiple measurement ranges;
5. The range of measurement can be automatically adjusted according to the film layer to be measured;
6. Probe can be replaced.

3. Performance Index

Number	Parameter name	technical index
1	Method of measurement	Four probe measurements
2	Range of measurement	0.05～2000 Ohm/sq
3	Maximum allowable tolerance for measurement	No probes.：0.2% ;Probe included：3 %
4	Temperature drift	50 pp/K @ 0～45℃
5	Communication interface	RS485
6	Measuring speed	6s（Including movement of probe）
7	work environment	temperature：0～50℃ ;relative humidity：≤80%
8	Storage environment	temperature：-10～+65℃ ;relative humidity：≤80%
9	Power supply	DC24V
10	Rated power	40W
11	Probe diameter	Ø 0.75mm
12	Probe spacing	2mm
13	Probe pressure	200g