Sartorius Combics CAH3, Руководство по эксплуатации, Страница: 26 / 148

Select the desired confi guration using the “
Q
“ or “
q
“ soft key. Confi rm your
selection using the “
O
“ key. Make additional settings in the submenu: scale interval
d/verifi cation scale interval e, minimum load (Verifi able confi guration only),
range limits (Multi-interval or Multiple range mode only) and maximum capacity.
Confi rm using the “
l
“ soft key or cancel using “
Esc
.“
Scale Interval d
Scale interval d indicates the resolution of the weighing instrument.
The scale interval d can be entered only in increments of 1, 2, 5, 10, 20, etc.
When using verifi able or verifi ed weighing platforms, the scale interval d is the same
as the verifi cation scale interval e.
Verification Scale Interval e
The verifi cation scale interval e indicates the resolution of the weighing instrument
in legal metrology. The verifi cation scale interval e can be entered only in
increments of 1, 2, 5, 10, 20, etc. For weighing instruments of accuracy class
l or
m
, e = d. This is why the scale interval d does not need to be entered separately.
When “Standard confi guration” is used, this menu item is not displayed.
Minimum Capacity (Min. Cap.)
When “Standard confi guration” is used, this menu item is not displayed. The
minimum load of the connected weighing platform is entered under this menu item.
The minimum load for scales of accuracy class
l
is 20 e and 10 e for class
m
.
Important Note:
The function of the minimum load setting is to warn operators that below this
limit, the summation of tolerances might lead to signifi cant measurement errors. In
Germany, for example, initial weights below the minimum load are not allowed.
Maximum Capacity (Max. Cap.)
The maximum capacity is the maximum load that may be placed on the weighing
instrument. When heavier weights are used the weighing instrument displays
overload “H.” The scale intervals of the weighing instrument are calculated using
the maximum load and the scale interval d (e.g. max. capacity = 15.000 kg, smallest
scale interval d = 0.005 kg yields 3000 scale intervals).
In legal metrology the total number of intervals must be no more than 3000 e, and
when using multi-interval scales there must not be more than 3000 e intervals per
range.
In standard operation, as opposed to legal metrology, you can defi ne a “Super
Range” weighing instrument of over 3000 intervals. These parameters, however,
may be infl uenced by physical restrictions.
Range 1, Range 2, Range 3
The range limits are entered for the individual ranges. The accuracy changes when
these limits are exceeded. The following applies when entering limits: range 1
<
range 2
<
range 3
<
maximum capacity.
This means that the weighing range can be divided into a maximum of 4 ranges.
The resolution changes at intervals of 1, 2, 5, 10, 20 etc., where the lowest
resolution is the smallest scale interval entered. Set ranges that are not required for
use to zero.
Available Units
With this function, you can make particular weight units (weight unit x, x=1, 2)
inaccessible during weighing. Available units are indicated by a * on the display
(more than one can be selected).
To enable or disable a unit, select the unit by pressing the “
Q
“ or “
q
“ soft key, and
then press the “
l
“ soft key (toggle function).
Saving Parameters To save the ADC confi guration, use the “
O
“ soft key to select “
Yes
“ and confi rm
with the “
l
“ soft key. The device software is reset, and the scale returns to the
normal weighing mode. To exit the menu without saving confi guration changes,
press the “
o
“ soft key.
Once these parameters have been confi gured, the A/D converter in conjunction with
the load cell(s) is defi ned as a weighing instrument. The A/D converter, in conjunc-
tion with the weighing platform, can now be used like any standard weighing
platform. In addition, the weight unit must be defi ned and the weighing platform
adjusted (calibration, adjustment and linearization must be performed). For a detailed
description of these procedures, see the “Adjustment in Service Mode“ section.
26
Operating Instructions Combics Complete Scales
Confi guring Weighing Platforms