Product Introduction:
The LZ-990 eddy current dual-purpose film thickness gauge uses the dual testing principle of electromagnetic induction and eddy current (with automatic selection function) for non-destructive testing of the thickness of insulation layers (such as paint, aluminum, rubber, plastic, enamel, enamel, resin, etc.) or non-magnetic coating layers (such as paint, plastic, resin, rubber, enamel, zinc, chromium, tin, copper, aluminum, etc.) on non-magnetic metals (aluminum, brass, bronze, etc.) or magnetic substrates (iron or steel).

Principle of Magnetic Induction Testing←Test schematic diagram

Test schematic diagram→ Principle of Eddy Current Testing
Product specifications:
| Test method (automatic switching) | Eddy Current | electromagnetic induction |
| application | Insulation coating on non-magnetic substrate | Magnetic substrateNon magnetic coating on iron or steel |
| Range | 0-2000 µ m or 0-80mils | |
| precision | <50 µm ± 1 µm, 50 µm to <1000 vm ± 2%, ≥ 1000 µm ± 3% | |
| resolution | 0.1µm (<100µm), 1.0µm (≥100µm) | |
| Data Storage | About 1000 | |
| Application storage | 8 types of electromagnetic induction calibration curves; 8 types of eddy current calibration curves | |
| Compliant with standards | Electromagnetic induction type: JJIS K5600-1-7, JIS H8501, JIS H0401/ISO 2808 ISO 2064、ISO 1460、 ISO 2178、ISO 19840 / BS 3900-C5 / ASTM B 499、ASTM D 7091-5 Eddy current type: JIS K5600-1-7, JIS H8680-2, JIS H8501/ISO 2808 ISO 2360、ISO 2064、ISO 19840 / BS 3900-C5 / ASTM D 7091-5 | |
| function | Application memory (calibration curve), measurement data memory, data deletion, data output, many classifications, automatic power on/off, clock, upper and lower limits, backlight module, statistical calculation, mechanism settings, etc., totaling 15 functions | |
| Display mode | LCD digital display with backlight | |
| External output | PC (USB) or Printed Output (RS-232C) | |
| Supply Voltage | 1.5 ('AA 'alkaline battery) x 2 | |
| Power supply power | 40mW (when backlight is turned off) | |
| Battery life | 100 hours (continuous operation with backlight off) | |
| operating environment | 0-40°C | |
| Size and weight | 82(W) x 99.5(D) x 32(H) mm, approx. Net 160g. | |
| Standard configuration | Standard sheet, iron substrate, aluminum substrate, battery, carrying bag, wristband, instruction manual | |
| Optional | Standard film, LW-990 test bracket, software, data cable, probe | |
