Delmhorst Instrument RC-1E - Manual (Page 2)

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Continued use with a low battery may cause the meter to go out of calibration. If
you install a new battery and the instrument still does not indicate a proper
calibration, return it to DELMHORST for service. See the “Service for Your
Meter” section.
CHECKING THE BATTERY
To check the battery voltage push the “ONOFF” switch down to the “OFF”
position and hold. The battery is “OK” if the needle moves beyond “54” (58)
(BATT “OK”) on the “A” scale.
TAKING A READING
When the meter switch is pushed up to the “ON” position and released it is
turned on and remains on for four minutes. The timer is reactivated for 4 minutes
with each subsequent test yielding a reading of 8% or higher. If readings are
below 8%, push the switch “ON” periodically to prevent the meter from
automatically turning off. The meter will then stay on for another four-minute
period.
To take a test, connect the electrode to the meter and turn the meter on. Align
the contact pins parallel to the grain of the wood. Drive the pins into the wood
and read the moisture content on the meter scale. Make sure the readings are
taken on the scale range at which the selector switch is set. When using
uninsulated pins, drive them to their full length into the wood. This will give you
the highest measured reading. Insulated pins read only at the uninsulated tip
and can be driven to a desired depth to gather shell and core (gradient)
information.
When using the 26-E Electrode with insulated pins (#496 or #1849), the meter
readings should be corrected according to the following table:
METER READINGS WITH 2-PIN 26-E ELECTRODE
7 8 10 12 14 16 18 20 22 24
CORRECTED READINGS (TRUE INDICATED MOISTURE CONTENT)
7.3 8.4 10.6 12.8 14.9 17.0 19.2 21.4 23.7 26.0
The above correction should be disregarded when the insulation of the pins has
worn off, or if uninsulated pins are used.