LH330C Non-Ferrous Coating Gauge

Description

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

The LH330C 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 LH330C Did

The LH330C 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.
Removable-tip probe: Supplied with the LHP30C probe, whose removable plastic tip reached into tighter spots than fixed-tip designs.

Why the L600S Replaces It

The LH330C 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 LH330C and the entire L3xx coating gauge line.

Additional information

Weight	3.3 lbs
Dimensions	15 × 10 × 3 in
Measurement Principle	Eddy current
Measurement Range	0 to 800 µm (0 to 32 mils)
Accuracy	±0.3 µm under 15 µm; ±2% at 15 µm and above
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	LHP30C (single contact point, constant pressure, cabled; removable plastic tip)
Display	LCD digital display
Features	Substrate calibration, foil calibration, upper/lower limit alarm, statistics (lot number, count, average, standard deviation, max/min), data memory, unit switching (µm/mils), auto power off
Data Memory Capacity	2,180 measurements
Operating Temperature	0 to 40 °C
Communications	RS-232C (printer / PC)
Power	4 x AA alkaline batteries (1.5 V)
Battery Life	Approximately 60 hours continuous
Dimensions	75 (W) × 140 (D) × 30 (H) mm
Weight	Approximately 0.45 kg (1 lb)
Standard Accessories	Calibration standards, leather carrying case, batteries, operating manual
Options	VZ330 printer, replacement calibration foils, replacement probe, AC adapter, leather carrying case
Warranty	One Year Total Care Warranty covering parts, labor, and specification compliance. Maintenance Agreements available.

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