In this case the corrected value is not saved to the connector’s EE-
PROM but only to the RAM; i.e. once the device is switched off,
then the next time it is switched on, this will be restored to its origi-
nal value.
If you prefer to have the new zero-point saved more permanently,
then, before zero-setting, briefly and temporarily lower the locking
mode to level 3 by switching on the device with the PROG and
FUNCTION keys held down. When you switch off, the corrected
value will then be retained; (the locking mode, however, will be
restored to its original level).
In the case of dynamic pressure probes the zero-point error is ge-
nerally saved to the calibration offset only temporarily (i.e. until you
switch off) - irrespective of whether locking applies.
Gain adjustment can be performed for the following sensor types using the sa-
me function, assuming the appropriate calibration value is available
:
pH-probe:
ZA 9610-AKY
pH4 or pH10
Conductivity:
FY A641-LF:
2.77 mS/cm,
FY A641-LF2:
147 uS/cm
FY A641-LF3: 111.8 mS/cm
O
2
-saturation:
FY A640-O2:
101 %
Gain adjustment e.g. pH10:
,
,
PROG
▼
PROG
1: `1 0.0 0´
AJ
6.2.3 Entering a setpoint
A setpoint can be entered in much the same way as gain adjustment (described
in the previous section). If you save defined calibration values other than the
zero-point, you can, by entering the setpoint, automatically correct or scale a
measured value. On ALMEMO
®
force transducers an appropriate calibration
resistance can be selected for the purposes of final value correction. The fac-
tor or gain correction is calculated, depending on the locking state, and saved
to the connector. To ensure that two-point adjustment is correct, the zero-point
should have been adjusted previously.
24
ALMEMO
®
8390-2
Measuring operations
