• Digital readout
• Wood Scale - 6% to 40% moisture range
• Reference Scale ­ reads from 0 to 100 on a relative basis
• Sheetrock Scale - 0.1%-50% moisture range
• Averages up to 100 accumulated readings

The best-selling BD-2100 is great for measuring moisture in a variety of different building materials, including wood, concrete, drywall, EIFS, roofing, insulation, and flooring. The BD-2100 has a digital display, an adjustable alarm, and Delmhorst’s exclusive calibrated drywall scale.

Read Key - This key read the Percent Moisture Content or relative moisture value in the material under test.

Calibration Check Key - This key, (when pressed with the read key) checks the meter calibration. It also displays the number of readings in memory (up to 100), the average, and the highest stored reading. It also clears the memory.

Scale Key - This key sets the display scale to #1 (Wood), #2 (0-100 Reference scale), and #3 (Gypsum). It also acts as a scroll key, depending on the function.

Set-Point Key - This key program the set-point value. A buzzer will alert you if the meter reads higher than the selected value. It also acts as a scroll key, depending on the function.

Press the red button (1) and the calibration check button (2) simultaneously. Meter is in calibration if it displays 12% (+ or -.2). Make sure the pins are not in contact with anything when checking the calibration.

If you check the calibration and the meter does not display 12% it is likely an indication of a low battery. If this occurs, change the battery immediately. Continued use with a low battery may cause the meter to go out of calibration. If you have a fresh battery and the instrument still does not indicate a proper calibration, return it to DELMHORST for service.

• Set the scale for #1 Wood, #2 Plaster/Concrete reference scale, or #3 Gypsum.
• To change the scale, press the scale button (3). The meter will display the current scale for one second.
• To scroll forward through the scales hold the scale button (3) while the current scale is displayed and scroll to the scale desired.
• To scroll backward through the scales, press, and hold the set-point button (4) within one second of pressing and releasing the scale button (3). Continue to hold the set-point button (4) and the scale number will decrease.
• When scrolling in either direction, release the button to stop at your desired scale. Changing the scale will automatically reset the set-point value to the default setting for that particular scale.

• To change the set-point value press the set-point button (4). The meter will display the current set-point value for the scale you have chosen for one second.
• To scroll forward to a higher value for that scale hold the set-point button (4) while the current set-point is displayed and scroll to the set-point value desired.
• To scroll backward through the set-point values, press and hold the scale button (3) within one second of pressing and releasing the set-point button (4).
• Continue to hold the scale button (3) and the set-point value will decrease.
• When scrolling in either direction, release the button to stop at your desired set-point.