HM530 Non-Destructive Wood Moisture Meter (Moco II)

A Non-Destructive Wood Moisture Meter, Now Succeeded by the HM540

The HM530, sold as the Moco II, measured moisture in wood by high-frequency capacitance through two metal sensors, reading inside the wood through surface contact without leaving pin holes. It served sawmills, woodworkers, and inspectors who needed a non-marking reading across a wide moisture range.

What the HM530 Did

• Non-destructive reading: high-frequency capacitance (20 MHz) measured through surface contact, leaving finished and veneer-grade wood unmarked.
• Wide moisture range: 2 to 150% moisture content, with accuracy of ±0.5% (±1% above 20%) on standard samples.
• Broad species coverage: more than 400 species, with adjustable specific gravity (0.10 to 1.25), thickness compensation (10 to 40 mm), and temperature compensation.

The Current Model: HM540

The HM540 carries the HM530’s non-destructive capacitance method forward and adds 999-point internal memory, USB data logging through the optional HDL-02 software, and JHWTC authorization as a moisture meter for conifer timber. For owners of the HM530 and the Moco II, it is the direct current replacement.

Looking for the current model? The HM540 Wood Moisture Meter is the active, non-destructive successor to the HM530.