Super Systems AC20 User Manual
Page 106
B. 2
To enable calibration and go to the next action step, push FUNC
when "on" is displayed. For CJ calibration , use / keys to set
a temperature value in 1/10°C read, with appropriate instrument,
between 1 - 3 rear terminal. No timeout is applied in the
calibration mode.
The last step is for loading default calibration data. The display
will show: CAL on upper display; OFF/ON on middle display, and
dFLt on lower display. Use the / key to select "on" and then
push FUNC key to load data. No action otherwise.
Note: The default calibration data allows the verification of
device functioning though they should not be taken as final
calibration values. After the default calibration data loading, it is
necessary to perform the proper input calibration.
Table A. Calibration Steps
Mnemonic code shown in upper display:
Pb.1
=
Main probe input (0 to 1.5 V)
Pb.2
=
Main probe input (0 to 1.3 V)
tP.In
=
Thermocouple input (0 to 60 mV
CJ.In
=
CJ input
A.I.ñA =
Carbon Monoxide auxiliary input (0 to 20 mA)
A.I.5
=
Carbon Monoxide auxiliary input (0 to 5 V)
A.I.10
=
Carbon Monoxide auxiliary input (0 to 10 V)
O6.ñA =
Out 6 (0 to 20 mA)
O7.ñA =
Out 7 (0 to 20 mA)
CAL
=
Default data loading
Table B. Action Steps
Mnemonic code shown on the middle display:
Lr.
=
Low range calibration
Hr.
=
High range calibration
U.
=
Input calibration verify
Note: During CJ input, verify the temperature is displayed in
1/10°C.
For OUT6/OUT7 calibration proceed as follows:
a) Low range calibration ("Lr." action). Set, by using /
pushbuttons, a value (from 0 to 5000) to read on rear terminal
a 0 µA ± 5µA current.
b) High range calibration ("Hr." action). Set, by using /
pushbuttons, a value (from 0 to 5000) to read on rear terminal
a 20 mA ± 5µA current.
c) Input calibration verify (U action). Set, by using /
pushbuttons, a value (from 0 to 8000) to read on rear terminal
a current value corresponding to: Out = displayed value/8000
* 20 mA.
Note: Rear terminals are 16(+)/17(-) for OUT 6 and 18(+)/19(-) for
OUT 7.
ac20-ssi-B.pmd
16/12/2003, 14.34
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