LH330J Non-Ferrous Coating Gauge

Description

The Non-Ferrous Field Gauge That Set the Standard for the L600S

The LH330J was Kett’s eddy current coating thickness gauge for operators measuring insulating coatings on non-magnetic substrates. It is no longer manufactured. The information below is provided for owners of existing units and for buyers identifying the current replacement.

What the LH330J Did

The LH330J used an eddy current probe to measure the thickness of paint, anodizing, resin, and other insulating coatings on aluminum, copper, brass, and other non-magnetic metals. Operators worked from one handheld unit with a single-contact probe that applied constant pressure for repeatable readings.

Built for non-ferrous substrates: Eddy current measurement of insulating coatings on aluminum, copper, brass, and other non-magnetic metals, including anodized and painted parts.
Measurement range: Up to 800 µm, covering typical coating and anodizing work.
Four application memories: Stored calibration curves for repeated jobs, so an operator could recall a setup without recalibrating.
Durable probe with easy calibration: Supplied with the fixed-tip LHP30J probe, with an easy-calibration mode that set up measurement from the substrate alone, accurate for coatings up to 500 µm.

Why the L600S Replaces It

The LH330J followed the LH300 series and was succeeded by the LH370 and LH373. The current production model for all of this work is the L600S. It keeps the non-ferrous measurement that defined the 330 and adds a wider measurement range, a 2.7 inch full color display, storage for 50,000 records, and USB-C output for modern data transfer.

Looking for the current model? The L600S Coating Thickness Gauge replaces the LH330J and the entire L3xx coating gauge line.

Additional information

Weight	3.5 lbs
Dimensions	15 × 10 × 3 in
Measurement Principle	Eddy current
Measurement Range	0 to 800 µm (0 to 32.0 mils)
Accuracy	±1 µm under 50 µm; ±2% at 50 µm and greater
Resolution	0.1 µm under 100 µm; 1 µm at 100 µm and above
Response Time	Instant
Applications	Insulating coatings on non-magnetic metal
Calibrations	4
Substrate Compatibility	Non-ferrous (aluminum, copper, brass)
Probe Type	LHP30J (gray; single contact point, fixed pressure, cabled; fixed durable tip)
Display	Digital LCD, minimum displayed digit 0.1 µm
Features	Substrate and 4-point foil calibration, easy calibration (NFe mode), upper/lower limit alarm, hold/continuous modes, lot statistics, data memory, unit switching (µm/mils), auto power off
Data Memory Capacity	2,180 measurements maximum
Operating Temperature	0 to 40 °C
Communications	RS-232C
Power	4 x AA alkaline batteries (1.5 V)
Battery Life	Approximately 60 hours continuous
Dimensions	75 (W) × 140 (D) × 31 (H) mm (main unit); probe Ø13 × 94 mm
Weight	0.5 kg (1.1 lbs)
Standard Accessories	Aluminum substrate (NFEJ), standard calibration foils (5 pcs), probe adaptor, carrying case, 4 x AA batteries, calibration foil case, operating manual
Options	Beryllium copper calibration foil (for plating measurement), replacement standard foils, replacement probe, VZ330 printer
Warranty	One Year Total Care Warranty covering parts, labor, and specification compliance. Maintenance Agreements available.

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