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12. Programming using the programming menus
12.3.11 Special measuring ranges ,Linearization ,Multi-point
calibration
Thanks to the new ALMEMO special connectors with extra memory for addi-
tional data (bigger EEPROM, code E4) the following tasks can now be per-
formed for the first time with elegance :
1. Provision of special measuring ranges with internal characteristic (see
12.3.9)
2. Linearization of signals for voltage, current, resistance, or frequency set by
the user
3. Multi-point calibration of all sensors
4. Serial number and calibration data management in the sensor
The 5690-2M system can as a standard feature evaluate all appropriately pro-
grammed connectors but only on the master measuring circuit board. Special
measuring ranges can be used on selector switch boards so long as they em-
ploy the same characteristic as channel M8. With option KL you can yourself, us-
ing the AMR-Control software, program a characteristic of up to 35 support val-
ues in the EEPROM on the ALMEMO connector. During a measuring operation the
measured values between these are interpolated on a linear basis. When cor-
recting non-linear sensors (e.g. with PT100 or thermocouple sensors) first the
original characteristics are considered; then the deviations are interpolated on a
linear basis and inserted.
Code for user-defined linearization / calibration:
Designation with ! Temperatu!
If a channel with a characteristic is deactivated or programmed with a different
range, the characteristic can subsequently be reactivated by programming the
special range ´
Lin
Other information that can be entered in the extended connector includes the
order number, the serial number, the date of the next calibration, and the cali-
bration interval. In internetworked systems this permits automatic monitoring of
the calibration intervals (see Fehler: Referenz nicht gefunden, 12.8).
12.4 Special functions
On the 5690-2M data acquisition system all
ALMEMO
special functions can be accessed
®
via a special menu; these special functions
may be needed only occasionally in routine op-
eration but may be very useful in many applica-
tions (see Manual 6.10). Some of these func-
tions are highly complex and should only be
used if you are fully aware of how they work
and what effect they have.
70
ALMEMO
´ using the keypad or command ´
®
5690-2M
´.
B99
* SPECIAL FUNCTIONS
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Connector: 1 Channel: 11
Print cycle factor:
U-Sensor min:
7 Action max:
7 Action min:
6 Analog-start:
6 Analog-end:
Output function:
1 Reference ch. 1:
1 Multiplexer:
Element flags:
Calibration offset: -12345
Calibration faktor:
M PRINT ESC
*
01
12.0 V
Start R1
Ende R2
0.0 °C
300.0 °C
MESS
(01)
(B-A)
IR
43210
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