Page 3
Protimeter TimberMaster
3Using the Protimeter TimberMaster without the
Temperature Probe
The TimberMaster is calibrated for wood at 20°C (68°F).
In general, the effect of temperature on the moisture
measurement calibration can be approximately
compensated as follows:
For every 5°C above 20°C, subtract 0.5%mc from the
value displayed.
For every 5°C below 20°C, add 0.5%mc from the value
displayed.
Examples:
Wood temp: 20°C, Moisture value: 15.5%. Temp correction: 0 moisture content: 15.5%
Wood temp: 25°C, Moisture value: 15.5%. Temp correction: -0.5 moisture content: 15%
Wood temp: 15°C, Moisture value: 15.5%. Temp correction: +0.5 moisture content: 16%
Wood temp: 30°C, Moisture value: 15.5%. Temp correction: -1 moisture content: 14.5%
Wood temp: 10°C, Moisture value: 15.5%. Temp correction: +1 moisture content: 16.5%
3.1 Reading with Integral Electrode Pins
Remove the cap to expose the needle electrodes and
switch the instrument ON by pressing . Select the
appropriate wood calibration scale (A, B, C, D, E, F, G,
H or J) by referring to the enclosed Protimeter wood
calibration tables and pressing . Push the pins in to
the surface of the wood and observe the reading.
3.2 Reading with Moisture Probe or Hammer
Electrode
Connect the moisture probe or (optional) hammer
electrode to the 3.5mm socket at the right hand side
of the TimberMaster, and switch ON by pressing .
Select the appropriate wood calibration scale (A, B, C,
D, E, F, G, H or J) by referring to the enclosed Protimeter
wood calibration tables and pressing . Drive the
moisture probe pins or hammer electrode needles in to
the wood and observe the reading.
4Using the Protimeter TimberMaster with the
Temperature Probe
If the timber being measured is signiÛcantly above or
below 20°C (68°F), the TimberMaster should be used
in conjunction with the Temperature Probe. When this
probe is connected the TimberMaster, it automatically
