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Wood Moisture Tester MT-900

The KETT MT-900 Wood Moisture Tester is designed for measuring the moisture content of veneer and wood materials. Using the electrical resistance method, it measures moisture through a four-needle probe inserted into the wood, providing quick and convenient measurements for wood inspection and quality control.

The MT-900 features built-in calibration curves for hardwood and softwood, as well as 16 wood group classifications. Its wide measurement range makes it suitable for checking both relatively dry wood and high-moisture timber.

The instrument also features automatic temperature compensation, average value display, an upper-limit moisture alarm, and moisture value correction. With optional printer and PC connection accessories, measurement data can be used for recording and quality management in woodworking, lumber processing, and wood drying applications.

Key Features

  • Wide Moisture Measurement Range — Measures moisture content up to 80% for hardwood and softwood, depending on the selected calibration.
  • Multiple Wood Calibrations — Includes dedicated calibration curves for hardwood and softwood, plus 16 wood group classifications.
  • Four-Needle Sensor — Measures moisture using a penetrating needle probe.
  • Automatic Temperature Compensation — Compensates for temperature variations during measurement.
  • Average Value Display — Displays the average of multiple measurements.
  • Upper-Limit Moisture Alarm — Allows users to set an upper moisture limit between 10% and 79%, or disable the alarm.
  • Moisture Value Correction — Adjusts readings from −9.9% to +9.9%.
  • Automatic Power-Off — Turns off automatically after approximately five minutes of inactivity.
  • PC Data Transfer Capability — Measurement data can be transferred to a computer using optional accessories.
  • Portable Design — Compact and lightweight for convenient use in wood inspection and production environments.


Specifications

Item

Specification

Model

MT-900

Measuring Method

Electrical Resistance Method

Applications

Veneer and wood

Calibration Curves

Hardwood, softwood, and 16 wood group classifications

Reference Standard

ISO 13061-1 for hardwood and softwood calibration

Measurement Range — Hardwood

6–80%

Measurement Range — Softwood

7–80%

Measurement Range — Wood Groups 1–16

4–40%, depending on wood type

Measurement Precision

Below 20%: ±0.5%; 20% and above: ±2.0% relative to reference resistance

Display

Digital LCD

Display Resolution

0.1%

Operating Temperature

0–40°C

Additional Functions

Automatic temperature compensation, average value display, upper-limit alarm, moisture value correction, automatic power-off

Upper-Limit Alarm Setting

10–79%, or OFF

Moisture Value Correction

−9.9% to +9.9%

Power Supply

6 × 1.5 V AA alkaline batteries

Power Consumption

Approx. 0.45 W

Main Unit Dimensions

110 (W) × 210 (D) × 50 (H) mm

Main Unit Weight

Approx. 0.5 kg

Specifications are based on the official KETT Japan MT-900 product information. Measurement ranges are specified at 20°C; at lower temperatures, the lower measurable limit increases by 0.1% for each 1°C decrease below 20°C.

Standard Accessories

  • Four-Needle Sensor
  • Spare Needles × 10
  • Conductive Rubber Pieces × 2
  • Wrench
  • 6 × 1.5 V AA Alkaline Batteries
  • Carrying Case
  • Shoulder Strap
  • Wood Group Number Charts (Japanese and English, 1 each)
 

Optional Accessories

  • Printer VZ-390
  • Printer Cable VZC70
  • Data Logger Software HDL-03
  • PC Cable VZC55