Surface Resistivity Tester（G-321B ）
Application
The Surface Resistivity Tester is used for measuring the surface resistance and resistivity characteristics of fabrics and insulating materials. It is widely applied in evaluating anti-static performance and electrical properties of textile materials, garments, and related insulating materials in laboratories, quality inspection departments, and research institutions.
Standards
GB/T 12703.4-2010, BS6524, BS EN 1149-1-2006, BS EN 1149-2-1997, GB/T 22042-2008, GB/T 22043-2008
Features
Adopts a 3 1/2 digit digital display and bridge measurement circuit for high accuracy and reliable readings.
Portable, small, and lightweight design for easy operation.
Built-in timer with automatic reading hold, simplifying the testing process.
Measures resistance up to 0–2×10¹⁶ Ω, ideal for point-to-point resistance, volume resistivity, and surface resistivity measurements of insulating materials.
Four selectable output voltages (100V, 250V, 500V, 1000V), suitable for testing various fabrics.
Built-in rechargeable battery eliminates the need for frequent replacements.
User-friendly interface with large, high-brightness LCD display showing measurement function, output voltage, unit, multiplier exponent, low battery warning, and operation error alerts.
Parameters
Resistance measurement range: 0–2×10¹⁶ Ω
Display: 3 1/2 digit large-screen digital display with backlight
Measurement timing: 1–7 minutes
Basic error of resistance measurement
| Measurement Voltage | Measurement Range | Basic Error |
|---|---|---|
| 100V, 250V, 500V, 1000V | 0–10⁹ Ω | ±(1% RX + 2 digits) |
| >10⁹–10¹⁰ Ω | ±(2% RX + 2 digits) | |
| >10¹⁰–10¹² Ω | ±(3% RX + 2 digits) | |
| >10¹²–10¹³ Ω | ±(5% RX + 3 digits) | |
| >10¹³–10¹⁴ Ω | ±(10% RX + 5 digits) | |
| >10¹⁴–10¹⁶ Ω | ±(20% RX + 10 digits) |
Resolution: Minimum resistance value ≤ 1/10 of allowable error for each range
Terminal voltage error: ±3% of rated value
Terminal voltage ripple content: RMS ≤ 0.3% of DC component
Measurement timing error: ±5% of set value
Power consumption: Battery works continuously for 30 hours; external power < 60mA
Power supply: DC battery 8.5–12.5V; AC supply: 220V 50Hz 60mA
Configuration List
Main unit — 1 set
Product certificate — 1 copy
Product user manual — 1 copy
Delivery note — 1 copy
Acceptance form — 1 copy
Product catalog — 1 copy
FAQ
1. What is this product?
The Surface Resistivity Tester is a precision instrument for measuring surface resistance and resistivity of fabrics and insulating materials.
2. What is it used for?
It evaluates anti-static performance and electrical properties of textiles, garments, and insulating materials in laboratories and quality control settings.
3. How does it work?
It uses a bridge measurement circuit and digital display to measure resistance at selectable voltages (100V–1000V) and records results accurately, with timing and automatic hold functions.
4. Why is it important?
It ensures that fabrics and insulating materials meet anti-static and electrical performance standards, which is critical for safety, quality control, and research.
5. What types of materials can be tested?
Textiles, garments, and various insulating materials for industrial, research, and quality inspection purposes.
Leave Message Get Price
