Page 2 Protimeter Grainmaster
1.2 Crop Calibrations and Functions
Sixteen calibrations are pre-programmed into the Grainmaster i (see in Table 1 below):
Note: Not all calibrations are for Ground samples. Also, some of the pre-programmed
calibrations are not available with the optional external Moisture and Temperature
Probe (see Section 3.1.)
Before measuring moisture and temperature of ground and compressed samples, as
detailed in Section 2 below, do the following:
1. Enter the Setup Mode from the switched OFF state by pressing while switching ON
using .
2. Switch temperature display from °C to °F.
3. Switch automatic temperature correction (ATC) ON or OFF. However, Protimeter
recommends that ATC is always activated when measure moisture levels in crops.
When ATC is OFF, the °C to °F icon, as applicable, is flashed as a warning while
moisture measurements are displayed.
2 Measuring Moisture and Temperature of Ground and Compressed
Samples
To take moisture and temperature measurements of 10 ml samples of crops, complete the
following steps:
1. Ensure that no external probe is connected. Switch ON in internal measurement mode
by pressing and releasing . If it is in the correct mode, the display will show H
2
O in
the top left-hand corner, three horizontal lines and the previously selected crop. If the
display shows BALEPROBE or PROBE (instrument is in external measurement mode)
or if a number is displayed, press to switch to internal measurement mode and to
cancel the reading.
2. Scroll to the required crop calibration (or 0-100 relative scale) by pressing or .
3. Be sure the grain cell of the instrument is clean. If it is dirty, clean it with the brush.
4. Place the grain cup (the matt aluminium ring) over the grain cell.
Table 1: Pre-Programmed Calibrations of Grains
Wheat Canola Coffee Rice
Oats Linseed Soya (soybean) Sorghum
OSR (oilseed rape) Sunflower Beans Paddy
Barley Corn (maize) Peas 0-100 relative
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