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USER MANUAL
30
13. Testing and calibration of the balance
To check the weighing function of balance – drier, switch it to the simple weighing (
key) and check it by putting precisely weighed object, e.g. calibration weight F2 (OIML),
equal to device measurement range. In case of any inaccuracies perform the balance
calibration. It is performed by activating the calibration function, available in special
functions menu, and putting the calibration weight on the pan according to indications
on the display (see Sensitivity calibration function).
Control of humidity measurement precision requires use of standard substance –
disodium tartrate (di-Sodium tartrate dihydrate C
H
Na
O
*H
O). For the control use 5 g
4
4
2
6
2
o
sample, setting: short mode, calculations method: m/ m
*100% , temperature 150
C,
0
sampling time 10 s, samples amount 4 and drying time 00:15:00s.
The result should be contained in range 15.61 – 15.71%.
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