BC Biomedical USP-100A Instrukcja Użytkownika Pobierz pdf (Strona 13)

Verification of Proper Scale Functioning

Small variations of water surface motion, air currents, or mechanical movements may

cause uncertainties in power measurements. To test scale accuracy at low levels, set

up the scale as in the Operating Procedure section. Place the 1 gram weight on the flat

surface of the target arm. Read meter three times; readings should be within ± 0.2

counts (for example, 14.4 to 14.8). In case of doubt about lower power resolution,

repeat the same procedure using light objects such as thin paper slices to produce

readings of 5 to 10 counts; repeat readings. Average uncertainty should be within ± 0.2

counts on the Watts scale. Avoid mechanical and air movement or variations in

magnetic fields while making tests.

Out of Measurement Range Warnings

Model USP-100A accommodates weight up to 410 grams. When the scale exceeds

this range, “Error 8.3” will be displayed. Something may be pressing against the target

or support. “Error 8.4” indicates underweight condition. If no obvious error has been

made by the user the unit should be returned for service when any code is displayed.

No Display

1. Make sure the AC adapter’s plug is fully seated in the jack at the back of the unit.

2. Use a voltmeter to verify the adapter is producing approximately 12 VDC.

3. Call our service department for assistance.

MAINTENANCE

TROUBLESHOOTING

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20

Brak uwag

BC Biomedical USP-100A Instrukcja Użytkownika Strona 13