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 re-
sistance can be selected for the purposes of final value correction. The factor
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.
1. Set the locking mode to level 4 or 3
(e.g. by switching on with the
PROG
and
FUNCTION
keys held down
see below
)
2. Select measured value and apply the
calibration value (e.g. boiling water)
3. Select the setpoint function:
,
,
PROG
▼
▼
1: 0 9 8.7
S3
Function ´
S3
´, if locking level 3:
Correction factor is saved as
gain correction
Function ´
S4
´, if locking level 3:
Correction factor is saved as
factor
4. Enter setpoint (see Section 5.4)
To perform final value adjustment on ALMEMO force transducers, select an in-
tegrated calibration resistance; in the MEASURED VALUE function, press and
hold down the
PROG
key. If the ´
CORR
´ arrow flashes, this has succeeded.
Select calibration resistance by key:
PROG
1s
1: 0 9.8 7
Nm
Select setpoint function by key:
and enter the setpoint (s. 5.4)
PROG
Deactivate calibration resistance by :
CORR arrow stops flashing
M
▲
6.2.4 Cold junction compensation
Cold junction compensation for thermocouples is normally performed automati-
cally by means of an NTC sensor in measuring socket M0. This sensor can be
substituted with an external measuring sensor; (see Manual, Section 6.7.3).
For especially exacting requirements (e.g. for extreme temperature gradients in
the device) special connectors are available each with its own integrated tem-
perature sensor (ZA 9400- FSx) for cold junction compensation. These can be
1: 0 9 8.7
°C
ALMEMO
2390-5
27
Measuring operations
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