LH330-Non-Ferrous Coating Thickness Gauge

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

The LH330 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 LH330 Did

The LH330 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.
• On-board statistics and storage: Lot statistics with storage for 2,180 measurements and output to a printer or PC for record keeping.

Why the L600S Replaces It

The LH330 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 LH330 and the entire L3xx coating gauge line.