Intelligent Resistivity Tester Bulk Resistivity Meter for
Graphitized Coke Powders
1.Description:
This instrument complies with the requirements of GB/T24521-2018
"Method for Measuring Resistivity of Carbon Raw Materials and
Coke". It is a specialized instrument for measuring the resistivity
of coke, graphite, calcined fines, calcined anthracite and similar
powder materials. The instrument is powered by a high-precision
constant current source, with automatic display of current and
voltage. It adopts computer-based fully automatic measurement and
control, featuring high accuracy and simple operation. It is
suitable for use in universities, research institutions, quality
inspection and production enterprises.
2.Working principle
Place a certain-sized dry sample into the sample chamber, introduce
a certain intensity of current under a certain pressure, measure
the voltage drop at both ends of the sample, and calculate the
resistivity of the sample based on Ohm's Law.
3.Configuration:
Including one LRWD-II test host, one set of sample fixtures, one
set of test software, one data cable, and one computer (configured
as per the contract).
4.Technical Parameter
Parameter / Specification | Details / Value |
Resistivity Range | 40–4000 μΩ·m |
Precision | |
Repeatability | Samples >300 μΩ·m: ≤5% absolute difference Samples <300 μΩ·m: ≤8% relative deviation |
Reproducibility | Samples >300 μΩ·m: ≤8% absolute difference Samples <300 μΩ·m: ≤10% relative deviation |
Constant Current Source | Output Voltage: 0–24.0000 V Output Current: 0–1.00000 A |
Voltage Range | 0–100.00 mV or 0–1000.0 mV |
Pressure Range | 0–1000.0 N |
Displacement Range | 0–40.00 mm |
Loading Method | Motorized loading |
Control & Data Processing | Computer-linked automatic control, data processing, report
generation & print |
Sample Cylinder Inner Diameter | 16.0 mm – 16.3 mm |
Power Supply | 220 V, 50 Hz |