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LZ370 Dual Coating Thickness Gauge

Dual-substrate coating thickness gauge for ferrous and non-ferrous work, no longer in production.

The LZ370 measured non-magnetic coatings on steel and insulating coatings on aluminum, copper, and brass from a single handheld unit, switching between electromagnetic and eddy current probes. It has been succeeded by the L600S, which carries the same dual capability with a larger color display, greater memory, and USB-C output.

  • No longer manufactured: The LZ370 has reached end of life. The L600S is its current production replacement.
  • Dual measurement: Electromagnetic and eddy current modes in one unit, covering both magnetic and non-magnetic substrates.
  • Field-ready memory: 100 application memories and storage for 3,000 measurement points, with data logging to a PC.

$1,995.00

Description

The Dual-Substrate Field Gauge That Set the Standard for the L600S

The LZ370 was Kett’s dual-mode coating thickness gauge for operators who measured across both magnetic and non-magnetic substrates without carrying two instruments. It is no longer manufactured. The information below is provided for owners of existing units and for buyers identifying the current replacement.

What the LZ370 Did

The LZ370 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. Operators selected the probe for the substrate in front of them and worked from one handheld unit.

  • 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 a shop encountered.
  • 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.
  • On-board data and logging: A backlit dot-matrix display showed date, time, and lot data, with storage for 3,000 measurements and output to a PC for record keeping.

Why the L600S Replaces It

The LZ370 followed the LZ330 series and was itself succeeded by the LZ373, which added expanded data logging. The current production model for all of this work is the L600S. It keeps the dual-substrate measurement that defined the 370 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 LZ370 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 3,000 points

Operating Temperature

0 to 40 °C

Communications

USB or RS-232C (PC); RS-232C (printer); LDL02 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 (FE370) and aluminum substrate (NFE370), 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, VZ330 printer (with printer cable VZC25), PC cable VZC53, RS-232C-USB converter, LDL02 data logger software

Warranty

One Year Total Care Warranty covering parts, labor, and specification compliance. Maintenance Agreements available.

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