Checkline BM - Manual (Page 5)

 Electromatic Equipment Co., Inc
-12-
12.0 MOST COMMON REASONS FOR MISS READINGS
• Product temperature out of application range
Material below 0°C resp. above +40°C (32 to 104 °F) may cause faulty
measurements. The storage of cold material in a warm storage area usually
creates condensed water which may lead to major measuring errors.
• Not adjusted material under test
Let your BM2 adjust to the surrounding temperature of the material for approx.
half an hour.
A very high temperature difference has a negative effect on the stability of the
measurement results.
• Wrong calibration curve
Before you measure your sample, double check the correct selection of the
calibration curve.
• Wrong filling quantity
Fill in exactly the right weight (± 0.01kg) of wood chips in the measuring
chamber.
• Wet or mouldy material
• Frozen measuring material
13.0 DEVICE MAINTENANCE INSTRUCTIONS
To provide a long life of your device please does not expose it to strong mechanical
loads or heat e.g. dropping it or direct sunlight exposure. Clean your device using a
dry cloth. The measuring chamber needs to be cleaned with a dry and soft brush.
Any kind of wet cleaning damages the device. The instrument is not rainproof. Keep
it in dry areas. When the device is not used for a longer period (6 months) or when
the batteries are empty, they should be removed to prevent a leakage of the battery
acid.
 Electromatic Equipment Co., Inc
-5-
3.0 CALIBRATION CURVES
Name of calibration
curve
Material under test
Filling
quantity
Measuring
range
2.0k Woodchips Standard woodchips 2.00 kg 5 - 30 %
2.4k Woodchips Standard woodchips 2.40 kg 10 - 35 %
2.8k Woodchips Standard woodchips 2.80 kg 10 - 40 %
3,5k Woodchips Standard woodchips 3.50 kg 20 - 50 %
4.5k Woodchips Standard woodchips 4.50 kg 35 - 60 %
2.8k Coarse WC Coarse woodchips 2.80 kg 10 - 50 %
3.5k Coarse WC Coarse woodchips 3.50 kg 20 - 50 %
2.8k Industr. WC Industrial woodchips 2.80 kg 10 - 50 %
3.5k Industr. WC Industrial woodchips 3.50 kg 20 - 50 %
2.4k P100 chips Very coarse woodchips 2.40 kg 10 - 30 %
2.8k P100 chips Very coarse woodchips 2.80 kg 25 - 45 %
3.5k P100 chips Very coarse woodchips 3.50 kg 35 - 55 %
2.4k Barks Barks 2.40 kg 10 - 35 %
2.8k Barks Barks 2.80 kg 25 - 60 %
5.0k Pellets Pellets made of wood 5.00 kg 5 - 15 %
1.0k Shavings Shavings 1.00 kg 5 - 20 %
1.3k Sawdust Sawdust 1.30 kg 10 - 30 %
2.0k Sawdust Sawdust 2.00 kg 15 - 60 %
1.0k Miscanthus Miscanthus chopped 1.00 kg 10 - 25 %
1.5k Corn cob Corn cob (without corn) 1.50 kg 5 - 45 %
Empty 1 For customer calibration
Empty 2 For customer calibration
Empty 3 For customer calibration
Empty 4 For customer calibration
reference To test the BM2. Not for use of measuring the moisture!
Selection of the right calibration curve:
Below you can find advices for selecting the right calibration curve. If you are not
sure about the right calibration curve, we recommend to carry out a comparison
measurement by kiln drying (CEN/TS14774) once.
• Woodchips: standard chips of wood (forest wood chips) according to EU-norm
CEN/TS 14961 class P16 and P45.
• Coarse WC: for coarse chips of wood P45 but with fewer fines. If the weight of
the filled 13 litre bucket is beyond 2,6 kg, the standard wood chips calibration
curves (2,4k resp. 2,0k) have to be used!