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Instruction Manual MM850099 ed.02a
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•
Press <
ENTER
> + <
STEP
> keys to load the step value in the memory.
•
The simulated value will be incremented by a repetitive value each time the <
STEP
> key is pressed.
8.5.7
"Scale factor" mode
The "scale factor" mode is a method to read or to simulate electrical signal values in terms of technical
units.
This mode is really useful for the calibration of a potentiometric recorder with scale from 0.0 mbar to
400.0 mbar corresponding to an electrical input linear signal from 4 to 20 mA.
•
Press the <
SELECT
> key and scroll the menu pages with <
s
> or <
t
> key to obtain 0-20 S or 4-20
S.
Press the <
ENTER
> key to obtain the indication in fig. 8.5.7.A.
L OS XXXX mA
Fig. 8.5.7A
•
Adjust with <
s
> and <
t
> keys the required zero scale value and press the <
ENTER
> key to load
memory.
The display will show the indication in fig. 8.5.7.B.
HI S XXXX mA
Fig. 8.5.7B
•
Adjust the required technical unit full scale value and press the <
ENTER
> key to load memory.
The instrument will return to the measuring or simulation mode.
•
To convert the technical unit into electrical unit, or viceversa, press the <
mA
> or <
%
> key.
8.5.8
mA - % selection
•
With the instrument in operation, either in measuring or simulation mode, press the pertinent key to
convert the electrical unit to technical unit (%) or viceversa.
The relation is linear as follows:
0.0%
0.0
0.0000
1.000
0.000
50.0%
50.0
0.5000
3.000
5.000
100.0%
100.0 mV
1.0000V
5.000V
10.000V
8.6
Faulty operating conditions
During start up, measuring and simulation modes, faulty conditions of the instrument will be announced
with coded messages as follows:
! Er r o r Ch e c k s u m !
Indicates a possible loss of calibration data.
