Checking Measuring Quality:
We recommend carrying out regu ar periodica contro ing check measurements, as different oca circumstances
might need different materia adjustments. (recommendation: contro ing measurements by oven drying method.
Oven Drying Method:
The oven drying method is the most acurate way to measure the materia moisture in paper or wood.
We recommend this for testing and ca ibrating of a e ectronic moisture meters.
Short description:
1. For measuring the weights we recommend a ba ance with an measuring range of 200g
and an accuracy of 0,01g
2. For drying you need an oven with adjustab e temperatures of 40, 100 and 104°C
3. Take a probe from wood with a sharp saw, avoid edge parts. For bui ding materia s take a probe with a with a
sharp chise to a depth of approx 3cm. the probe shou d be at east 20g
4. It is very important to take the weight of the first probe immediate y, as air humidity may change the moisture
content. Name of the first weight: wet weight (WW)
5. The probe must be dryed in the oven unti the weight is constant,
the maximum drying temperatures for paper and cardboard : 100 °C (DIN ISO 287)
the maximum drying temperatures for wood: 104 °C (ISO 3130-1975)
the maximum drying temperatures for concrete: 50 °C
the maximum drying temperatures for gipsum: 40 °C
7. The name of the dry weight is DW.
8. The moisture content is ca cu ated with the formu a:
MOISTURE = MOISTURE =
(WW - DW) (WW - DW)
DW WW
* 100 % * 100 %
wood moistue (ISO 3130-1975): bui ding materia s, paper, cardboards:
DS5U Operating Manual
Basic Calibration:
The moisture meter can be tested and ca ibrated with the
test modu e PE50R.
For this procedure the sensors need to be dry and c ean!
Se ect „Ca ibration“ in the main menu aud put in code no 97
1. Zero Point
the zero point on y can be measured and not adjusted. The zerop point
shou d be between 10 and 190. If the measured va ue is above 200, no
zero point wi be measured. Ho d the meter with its sensors free into the
air, both va ues must be equa , wait ti the zero point is stab e and press
the OK-button.
If the zeropoint is out of range, the meter needs to be repaired!
2. Measurement with Test Modu PE50R:
the meter needs to be sticked into the test modu e PE50R.
The ca ibration resu t is shown, additiona the ca ibration factor. This
factor can be changed with the arrow bottons ti the measurement
reusu t is as exact as possib e 200. The factor can be changed between
150 and 255. With pressing the OK-button, the changed ca ibration wi be
stored and the ca ibration procedure finished.
If the ca ibration is not posib e, the meter needs to be repaired.
ca ibrating:
PE50R: 191
factor: 223<
ca ibrating:
measuring va : 123
Zero point: 123<
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