“isoTEST” Calibration/
Adjustment Functions
The following functions are available:
T key
– Weighing system settings
– Ext. cal./adj.: factory-defined weight
– Ext. cal./adj.: user-defined weight
– Internal cal./adjustment
– “reproTEST”
– Weighing (only)
– Hardware tests
– Test interfaces
– Heater test
– Heater adjustment
If the sample pan and the pan support
are removed from the sample chamber, you
can access the following functions:
T key
– Heater adjustment
– 2-point temperature adjustment
– 1-point temperature adjustment
Heater Adjustment
Using 1-point and 2-point temperature
adjustment and the YTM03MA tempera-
ture adjustment set (Accessories) you
can calibrate and adjust temperature
settings of the drying unit.
Weighing only
Notes on the MA100-0CE230:
The verifiable weighing program is
designated by the Q symbol in the right-
hand side of the display.
51
Weighing System Settings
Calibration, Adjustment
Purpose
Calibration is the determination of the
difference between the weight readout
and the true weight (mass) of a sample.
Calibration does not entail making any
changes within the weighing system.
Adjustment is the correction of the
difference between the measured value
displayed and the true weight (mass)
of a sample, or the reduction of the
difference to an allowable level within
maximum permissible error limits.
Features
Calibration can be performed externally
or, with the MA100, internally.
External calibration can be performed:
– with a factory-defined weight
– with a user-defined weight
You can have calibration and adjust-
ment results documented as a ISO/GLP-
compliant printout; see the next page.
Selecting the Calibration/
Adjustment Mode
After pressing the T key and
selecting the menu item
Weighing System
Settings
you can select one of the following
modes:
– External calibration/adjustment
with a factory-defined weight
Ext.cal./adj.;
factory-def.wt
– External calibration/adjustment
with a user-defined weight
Ext.cal./adj.;
user-def.wt
– Internal calibration/adjustment
(MA100 only)
Int.cal./adj.
– Repeatability test (MA100 only)
reproTEST
– Weighing only
Weighing
Start the desired mode:
● Press the
O soft key
● Press the
Start soft key
For Servicing:
Unlocking the external adjustment
on verified scales
● Remove the cover to the left of the
data interface
> Switch set to the right:
External adjustment accessible
Switch set to the left:
External adjustment locked
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