DatasheetThe coating thickness gauge MiniTest 7400 is an indispensable tool for measuring non-magnetic coatings (paint, synthetic material, chrome, etc.) on ferromagnetic substrates (steel), or insulating coatings (lacquer, enamel, synthetic material, etc.) on conductive substrates (aluminium, copper, stainless steel, etc.).
The MiniTest 7400 enables a wide range of measurements, from the thinnest coatings in the sub-micrometre range (e.g. galvanised coatings), to thick coatings (e.g. flame retardant coatings in steel constructions, rubber coatings, etc.). Measuring objects with difficult geometries (e.g. the measurement of steel pins, or in recesses and holes, etc.) are also no problem for the MiniTest 7400.
SIDSP sensors feature high levels of accuracy and are also extremely durable, easily withstanding years of use even on rough surfaces. Each sensor…
- is subject to fully automated testing under workshop conditions,
- is equipped with 50 calibration points to correct even the smallest deviation,
- undergoes a climate cycle during production enabling it to automatically compensate for the influence of temperatures.
Ease of use is a further feature: The coating thickness gauge MiniTest 7400 is controlled via a graphic display and provides common PC functions: context-specific help, saving of readings in a folder structure, navigating via menus displaying symbols and text. The user guide is currently available in 6 languages (German/English/French/Spanish/Italian/Portuguese).
Application
Non-destructive coating thickness measurement:
- Non-magnetic coatings like varnishes, enamels, chrome and zinc on ferromagnetic base materials (e.g. steel)
- Insulating coatings like varnishes and anodising aluminium on non-ferrous metals (e.g. aluminium, copper, die-cast zinc)
Measuring principles
- Magnetic induction (F-type sensors) according to DIN EN ESO 2808, method 7C
- Eddy current (N-type sensors) according to DIN EN ESO 2808, method 7D
| Property | Value |
|---|---|
| No. of measurement series | 500 |
| Measurement memory | 250.000 readings |
| Statistical functions | Number of readings · Minimum · Maximum · Mean value · Standard deviation · Coefficient of variation · Block statistics (Standard or free configurable) · Cp · Cpk · Histogram · Trend diagram |
| Calibration | 1-point calibration (Zero) 2-point calibration multi point calibration with up to 5 points |
| Additional calibration procedures according to international standards | ISO 19840:2004(E) SSPC-PA2 SS 184160 AS 3894.3 |
| Limit monitoring | Optical and acoustical signaling |
| Measurement units | metric: µm · mm · cm imperial: mils · inch · thou |
| Data interface | USB (via adaptor) IrDA® (Infrared) RS-232 (via adaptor) |
| Printer | Standard ASCII printer Wireless ElektroPhysik printer |
| International standards | DIN EN ISO 1461 · DIN EN ISO 2064 · DIN EN ISO 2178 · DIN EN ISO 2360 · DIN EN ISO 2808 · DIN EN ISO 3882 · ISO 19840 · ASTM B 244 · ASTM B 499 · ASTM D 7091 · ASTM E 376 · AS 3894.3 · SS 184160 · SSPC-PA 2 · IMO-PSPC |
| Display | graphics display, adjustable lighting |
| Power supply | 4 x batteries AA / LR 06 / Mignon Mains adaptor 90 – 240V / 48 – 62 Hz |
| Operating temperature range | -10 °C … +60 °C / 14 °F … 140 °F |
| Storage temperature range | -20 °C … +70 °C / -4 °F … 158 °F |
| Dimensions | 153 mm x 89 mm x 32 mm 4.84″ x 3.5″ x 1.26″ |
| Weight | 310 g / 10.93 oz (incl. batteries) |