And ВМ-22 Инструкция по эксплуатации онлайн [13/88] 97496

And ВМ-22 Инструкция по эксплуатации онлайн [13/88] 97496
BM series 11
Eliminate temperature differences between the weighed
sample and the environment. When a sample is warmer
(cooler) than the ambient temperature, the sample will appear
lighter (heavier) than the true mass. This error is due to the
rising (falling) draft next the sample. If you touch the sample,
the same type error will occur. Do not touch the sample directly
with your hand. Use tweezers or other tools.
Do not drop things upon the weighing pan, or place a weight
beyond the range of the balance on the weighing pan.
Make each weighing gently and quickly to avoid errors due to
changes in the environmental conditions.
We recommend that the fine range ring and separation plate
are used to avoid weighing error caused by drafts when BM-252
displays a weighing value in unit of 0.01 mg (minimum display:
0.01 mg).
We recommend that the small fine range ring, fine range
ring and separation plate are used to avoid weighing error
caused by drafts when BM-22 and BM-20 display a weighing
value in unit of 0.01 mg and 0.001 mg (minimum display: 0.01
mg and 0.001 mg).
Take into consideration the affect of air buoyancy on a sample
when more accuracy is required.
Do not use a sharp instrument (such as a pencil or ball point
pen) to press the keys, use your finger only.
Press the RE-ZERO key before each weighing to prevent
possible errors.
Avoid foreign matter (dust, liquid or metal fragments) that could
get inside the balance.
Operate your balance gently. Shorten the operation time as
much as possible ( Opening and closing door, putting and
removing sample). Use a pair of tweezers to avoid temperature
changes due to heat from inserting your hand into the weighing
chamber.
40°C 20°C
Draft
Weighing pan
Fine range ring
BM-252
Shock
Small fine range ring
BM-20
BM-22
Fine range ring

Содержание

Скачать