Delmhorst Instrument RDM-3 - Manual (Page 24)

Copyright  2005, Delmhorst Instrument Co.
Page 24 of 28
TAKING A READING
The contact pins provided are best for stock up to 6/4. On stock over 6/4 or for
hardwoods over 4/4 we recommend using a remote probe such as the 26-ES
ram-type electrode. Mount the 26-ES directly to the external connector.
Ø Remove the protective cover to expose the pins. Check that the contact
pins are firmly hand tightened.
Ø Power the meter up as described on page 7, and make necessary
conversions/setting changes.
Ø To take a reading, align the contact pins parallel to the grain and push them
to their full penetration into the wood, if possible. Insulated pins read only at
the tip and can be driven to the desired depth.
Ø Press the SELECT button and read the moisture content on the meter scale.
The meter displays the %MC for two seconds.
Ø To add a reading to the previously stored readings, release the SELECT
button if you are in triggered mode. If you are in continuous mode, the meter
will not store a new reading until the SELECT button is pressed and released
again during the reading cycle.
NOTE: MC RANGE AND VALID READINGS
Readings below 5% or above 60% are displayed as LOW or HIGH, respectively.
However, since the resistance of the wood also depends on the species and
temperature of the wood, the meter may not always be able to read down to 5%.
For different species and different wood temperatures, there is a minimum %MC
limit below that the meter can not read. All readings below this “lowest limit” are
displayed as LOW, and are not stored. These readings are not considered valid
readings and are not used by the meter in any statistical calculations.