LZ373 Dual Coating Thickness Gauge

Description

The High-Capacity Dual Gauge That Set the Standard for the L600S

The LZ373 was Kett’s dual-mode coating thickness gauge for operators who measured across both magnetic and non-magnetic substrates and needed to log large volumes of readings. It is no longer manufactured. The information below is provided for owners of existing units and for buyers identifying the current replacement.

What the LZ373 Did

The LZ373 paired an electromagnetic probe for non-magnetic coatings on steel with an eddy current probe for insulating coatings on aluminum, copper, brass, and other non-magnetic metals. It shared the measurement performance of the LZ370 and added substantially greater on-board data capacity.

Two substrates, one gauge: Electromagnetic mode for coatings on ferrous metals and eddy current mode for coatings on non-ferrous metals, covering the full range of plated, painted, and lined parts.
Wide measurement range: Up to 2,500 µm on ferrous substrates and 1,200 µm on non-ferrous, handling thick linings and heavy coatings as well as thin films.
100 application memories: Stored calibration curves for 50 ferrous and 50 non-ferrous applications, so a repeated job could be recalled without recalibrating.
Expanded data logging: Storage for roughly 39,000 measurement points, around thirteen times the LZ370, with faster output to a PC for high-volume record keeping.

Why the L600S Replaces It

The LZ373 was the data-logging member of the L3xx series, following the LZ370 and the LZ330 series before it. The current production model for all of this work is the L600S. It keeps the dual-substrate measurement that defined the series and adds 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 LZ373 and the entire L3xx coating gauge line.

Additional information

Weight	2.8 lbs
Dimensions	15 × 9.5 × 2.5 in
Measurement Principle	Magnetic Induction and Eddy Current
Measurement Range	0 to 2500 µm (Fe); 0 to 1200 µm (NFe)
Accuracy	±1 µm under 50 µm; ±2% from 50 to 1000 µm; ±3% at 1000 µm and greater
Resolution	0.1 µm under 100 µm; 1 µm at 100 µm and above
Response Time	Instant
Applications	Non-magnetic coatings on magnetic metal; insulating coatings on non-magnetic metal
Calibrations	100 (50 electromagnetic + 50 eddy current)
Substrate Compatibility	Ferrous and non-ferrous
Probe Type	LEP30J / LHP30J standard; also accepts LEP30C / LHP30C (single contact point, constant pressure, cabled)
Display	Digital dot-matrix LCD with backlight, on-screen date/time and lot/data display, minimum displayed digit 0.1 µm
Features	16 menu-driven settings incl. calibration-curve selection, substrate and 5-point foil calibration, upper/lower limits, statistics, lot splitting, data memory, date/time, backlight, auto power off
Data Memory Capacity	Approximately 39,000 points
Operating Temperature	0 to 40 °C
Communications	USB or RS-232C (PC); RS-232C (printer); LDL03 data logger software supported
Power	4 x AA alkaline batteries (1.5 V)
Power Consumption	80 mW (backlight off)
Battery Life	Approximately 100 hours continuous (backlight off)
Dimensions	75 (W) × 145 (D) × 31 (H) mm (main unit)
Weight	0.34 kg (0.75 lbs)
Standard Accessories	Iron substrate (FE373) and aluminum substrate (NFE373), standard calibration foil set (6 pcs), probe adaptor, carrying case, 4 x AA batteries, calibration foil case, operating manual
Options	Calibration foils (thicknesses other than the furnished set), Measuring Stand LW990, VZ380 printer (with printer cable VZC60), PC cable VZC53, RS-232C-USB converter, LDL03 data logger software
Warranty	One Year Total Care Warranty covering parts, labor, and specification compliance. Maintenance Agreements available.

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