Ahlborn ALMEMO 2290-2/3, Operating Instructions Manual

Page: 25 / 44

6.4 Limit Values
Two limit values (MAX, MIN) can be programmed for a measuring channel. An
exceeding of limit values is handled as fault, similar to an exceeding of
measuring range limits or sensor breakage. The measured value will flash on
the display, alarm relays will respond and alarm values will be output during a
measuring cycle (s.man. 6.3.9). Activation of the functions ´
LH
´ and ´
LL
´, s. 5.2.
Function LIMIT VALUE HIGH ´
LH
´ and LIMIT VALUE LOW ´
LL
´
Select by using the key F2... ...
F2
1: 1 2 3.0
LH
Programming: Input according to 5.4
Switch-off: ,
1s
ENTER
CLEAR
1: - - - -
LH
6.5 Correction Values
The correction values ZERO POINT and SLOPE allow for correcting sensors
with regard to zero point and slope (gain) (see manual 6.3.10).
Corrected Meas. Value = (Meas. Value - ZERO POINT) x SLOPE.
Function ZERO POINT CORRECTION ´
ZC
´
Select by using the key F2... ...
F2
1: 0 0 3.2
ZC
Programming: Input according to 5.4
Clearing with the keys: long,
CLEAR ENTER
1: - - - -
ZC
Function SLOPE CORRECTION: ´
SC
´
Select by using the key F2... Input according to 5.4
1:1.5 0 0 0
SC
If correction values are programmed and, as a result, the measured value is
corrected, the arrow
CORR will be indicated in the display.
Sensor Adjustment
To simplify the correction of sensors for the zero point and slope (gain), a key
combination for an automatic adjustment is available in the function
MEAS.
VALUE
(see 7.1.4). If the function zero point correction is activated (s. 5.2) the
corrected measured value is stored as zero point correction and will be set to
zero. However, the base value will be maintained.
Function selection MEAS.VAL. Adjustment with keys:
MEAS.VAL.
ENTER
1s
+/-
ALMEMO

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Sensor Programming