PINLESS LCD MOISTURE METER WITH TRICOLOR BAR GRAPH USER’S MANUAL MM8 Please read this manual carefully and thoroughly before using this product.
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 4 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Product Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Install Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The meter exploits two physical phenomena to make its measurements: 1. The linear relationship between a solid material’s moisture level and its dielectric constant—and therefore its capacitance. 2. The so-called fringing-field effect—the slight spreading of the electric field produced by current flowing between two electrodes when both electrodes are on the same side of a material. Behind the top of the MM8 are two metal plates. When the meter is powered on, the plates are given small and opposite charges.
a water leak above a ceiling by comparing readings at various points on it. If the ceiling is level, the point that produces the highest reading is below the source of the leak. Any digital reading can be held by pressing the HOLD button on the front of the meter. This button makes it possible to make a measurement in a dark place and display it after bringing the meter into a lighted area. To extend battery life, the MM8 automatically powers off after two minutes of inactivity.
PRODUCT OVERVIEW Fig. 1 shows all of the controls, indicators and physical features of the MM8. Fig. 2 shows all possible display indications. Familiarize yourself with the position and function of all components before moving on to the Setup Instructions. G Fig. 1. A The controls, indicators and physical features B of the MM8 C D E F A. High-contrast, white-on-black LCD B. LED bar graph; mirrors digital reading on LCD C. MODE button.
SETUP INSTRUCTIONS INSTALL BATTERY Open the battery compartment at the bottom of the meter (Fig. 1, Callout F) and plug the included “9V” battery into the wired socket inside the compartment. The terminals of the battery and the socket mate in only one way, with the smaller male terminal plugging into the larger female terminal. Close the compartment after installing the battery. OPERATING INSTRUCTIONS To power on the meter, press and hold the button (Fig. 1, Callout E) for at least three seconds.
Measurements of wood are skewed by two variables: ambient humidity and the density of the wood species. The best way to compensate for the effect of these variables is to develop your own moisture level curves, based on your experience working with different species of wood on a day-to-day basis. Although the MM8 auto-calibrates each time it is powered on, the meter can be manually calibrated.
Dimensions Weight Power Source 6.3 x 2.8 x 2.9 in. (160 x 70 x 73.5mm) 4.7 oz. (132g) without battery (1) “9V” battery (included) WARRANTY INFORMATION In the U.S, General warrants its instruments and accessories, and digital tools against defects in material or workmanship for one year from the date of purchase unless otherwise stated on the packaging, manual, and/or marketing materials.
