Electromagnetic Eddy Current Thickness Gauge
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| Brand | Biuged |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | BGD 545 |
| Price | Upon Request |
| Measurement Principle | Dual-mode electromagnetic (magnetic induction for Fe substrates |
| Measurement Range | 0.0–5000 µm |
| Resolution | 0.1 µm (<100 µm), 1 µm (100–999 µm), 10 µm (>1000 µm) |
| Accuracy | ≤ ±(3% reading + 2 µm) |
| Minimum Substrate Thickness | 0.2 mm (Fe), 0.05 mm (NFe) |
| Minimum Curvature Radius | Convex 5 mm / Concave 25 mm |
| Minimum Measuring Area | 6 mm² |
| Probe Type | Integrated digital probe with sapphire tip |
| Display | 128 × 48 dot-matrix LCD |
| Power Supply | 2 × 1.5 V AAA alkaline batteries |
| Dimensions & Weight | 101 × 62 × 28 mm / 79 g (including batteries) |
| Units | µm and mil selectable |
| Measurement Modes | Fe, NFe, Auto (Fe/NFe) |
| Compliance | GB/T 4956–2003, GB/T 4957–2003, DIN EN ISO 2808, JJG 818–2005 |
| Brand | Defelsko |
|---|---|
| Origin | USA |
| Model | PosiTest F/G |
| Measurement Principle | Electromagnetic Induction (F-type) / Eddy Current (G-type) |
| F-Type Range | 0–2000 µm (0–80 mils) |
| G-Type Range | 0–200 µm (0–8 mils) |
| F-Type Accuracy | ±5 µm (≤100 µm), ±5% of reading (>100 µm) |
| G-Type Accuracy | ±1 µm (≤20 µm), ±5% of reading (>20 µm) |
| Probe Type | Permanent Magnet (F) / High-Frequency Eddy Current (G) |
| Compliance | ASTM D7091, ISO 2178, ISO 2360, SSPC-PA 2, GB/T 4956, GB/T 4957 |
| Power Source | None (magnet-driven) |
| Environmental Rating | IP65-equivalent robust housing |
| Calibration | NIST-traceable certificate supplied with each unit |
| Brand | Oxford Instruments |
|---|---|
| Origin | USA |
| Model | CMI233 |
| Measurement Principle | Dual-mode (Magnetic Induction for ferrous substrates |
| Measurement Range | 0–3.05 mm (magnetic induction), 0–1.52 mm (eddy current) |
| Resolution | 0.1 µm |
| Accuracy | ±1% or ±0.1 µm (per certified reference standards) |
| Minimum Substrate Thickness | 0.35 mm |
| Minimum Curvature Radius | 5 mm (convex), 25 mm (concave) |
| Minimum Test Area | Ø20 mm |
| Compliance | ASTM B499, B530, B244, B259 |
| Data Storage | 12,400 readings |
| Display | 1/2-inch backlit LCD |
| Interface | RS-232 serial port |
| Power | 9 V alkaline or rechargeable battery |
| Weight | 260 g (incl. battery) |
| Dimensions | 149 × 79.4 × 30.2 mm |
| Units | Switchable metric/imperial |
| Statistical Functions | Mean, SD, min/max, histogram, CPK, count |
| Scan Mode | Time-based averaging with min/max capture |
| Keypad | Sealed membrane (9-key basic / 16-key enhanced) |
| Brand | QINGTAO |
|---|---|
| Model | QT-N1 |
| Measurement Principle | Dual-mode (Eddy Current for Non-Magnetic Substrates, Magnetic Induction for Ferrous Substrates) |
| Measurement Range | 0–1250 µm |
| Resolution | 0.1 µm |
| Accuracy | ±(3% H + 1.5 µm) with Single-Point Calibration |
| Substrate Compatibility | Ferrous metals (Fe, steel) and non-ferrous non-magnetic metals (Al, Cu, Zn, Sn) |
| Coating Types | Non-conductive (paint, enamel, plastic, rubber) and non-magnetic metallic (e.g., Cr, Zn on steel) |
| Probe Options | F1, F1/90°, F10, N1, N1/90°, N10 |
| Data Storage | 500 readings |
| Statistical Functions | MEAN, MAX, MIN, NO, S.DEV |
| Calibration Modes | Single-point & two-point |
| Operating Temperature | −10 °C to 50 °C |
| Power | 2 × AA (1.5 V) |
| Dimensions | 125 × 67 × 31 mm |
| Weight | ~340 g |
| Compliance | GB/T 4956–1985, GB/T 4957–1985 & –2003, JB/T 8393–1996, JJG 889–1995, JJG 818–1993 |
| Origin | Germany |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 8500 Basic |
| Pricing | Available Upon Request |
| Measurement Range | 0–2000 µm (standard), 0–5000 µm (optional) |
| Resolution | 0.1 µm / 1 µm / 0.01 mm |
| Substrate Compatibility | Ferrous (Fe): steel, iron (min. thickness 0.2 mm) |
| Non-ferrous (NFe) | aluminum, zinc, copper, brass (min. thickness 0.05 mm) |
| Measurement Area | 20 × 20 mm² |
| Probe Types | 5 modular interchangeable probes (magnetic induction, eddy current, or dual-mode) |
| Memory Capacity | 100 readings |
| Calibration | Single- or dual-point user-defined curve |
| Display | High-resolution backlit LCD with 180° flip orientation |
| Indicators | Dual-color (red/green) LED status feedback |
| Keypad | Illuminated 4-directional navigation keys |
| Compliance | ISO 2178, ISO 2360, DIN 50981, BS 3900-E7, ASTM B499, ASTM D7091 |
| Certification | Traceable calibration certificate issued by PTB (Physikalisch-Technische Bundesanstalt, Germany) |
| Optional Accessories | QuaNix PC software, USB interface cable |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Region Classification | Domestic (China) |
| Model | YT-321 |
| Price | USD 170 (FOB) |
| Measurement Principle | Pulse-Echo Ultrasonic |
| Range (Steel) | 0.75–350 mm |
| Standard Probe Range | 1–250 mm |
| Resolution | 0.1 mm |
| Sound Velocity Adjustment | 1000–9999 m/s |
| Operating Temp. | −10 to +60 °C |
| Accuracy | ±(1% H + 0.1) mm (H = actual thickness) |
| Power | Two AAA alkaline batteries |
| Battery Life | ~200 hours |
| Dimensions | 130 × 70 × 25 mm |
| Weight | 0.2 kg (instrument only) |
| Display | High-brightness LED backlight |
| Compliance | Designed per ISO 2400:2019 (Ultrasonic thickness measurement — Calibration and verification procedures) |