gefran 2300 Manual De Uso página 29

Lo_tr start scale limit for retransmission output in range -9999/9999.(*)
Hi_tr full scale limit for retransmission output in range -9999/9999. (Lo.tr may be higher than Hi.tr).(*)
Lo_AL Minimum limit for setting of absolute alarm setpoints in range -9999...+9999.(*)
Hi_AL Maximum limit for setting of absolute alarm setpoints in range -9999....+9999.(*)
(*) If dEcP = n + 4 (display value multiplied by 10), the minimum limit becomes -1999 (displayed: -19990)
Configuration 4 (CFG.4).
Setting custom linearization table in 32 segments.
ATTENTION: before setting, you must know the various corresponding values between the input signal and the engineering
units scale (see example of linearization). Press F to scroll the 33 values of the linearization table in scale units:
St.0 Set starting point (scale start)
St.1 Set point 1
St.2 Set point 2
.......
St.32 Set point 32 (full scale)
EXAMPLE OF LINEARIZATION
Note: Positive polarization signals (ex. 0-50mV); St.0 is value displayed for
displayed for maximum input (ex. 50mV).
For signals with symmetrical polarization (ex. ± 25mV); St.0 is value displayed for maximum negative input (ex. -25mV); St.32 is
value displayed for maximum input (ex. +25mV).
IMPORTANT: the instruments are supplied pre-calibrated, run the procedure only if absolutely necessary. Start calibration with
the instrument on for at least 5-10 minutes. To access the calibration menu, keep the F key pressed until the message _CAL
appears on the display in alternation with value 0. Access is subject to jumper S4 = ON and to software protection Prot in
CFG2. The calibration menu can be accessed directly by pressing the F, Inc, Dec keys simultaneously; this access is subject
only to software protection by means of the Prot parameter in configuration CFG.2. The calibration menu has 11 items:
1 Calibration 50mV, 60mV or 100mV (CAL.1)
2 Calibration 1V (CAL.2)
3 Calibration 10V (CAL.3)
4 Calibration 20mA (CAL.4)
5 Manual calibration of pressure probe (CAL.SG)
6 Automatic calibration of pressure probe (CAL.Au)
7 80% automatic calibration of pressure probe (CAL.80)
Direct access to the "CAL.80" procedure is also possible by simultaneously pressing the F and Raise keys; this access
mode is subordinate only to software protection (Prot. parameter in CFG2) and to Strain Gauge or transmitter probe type
(In.tYP = 0, 1, 2; In.Cod = 0...17).
8 • CONFIGURATIONS
EXAMPLE OF LINEARIZATION
Valore
fondo
scala
850
750
400
150
Inizio
scala 0 8 16
9 • CALIBRATIONS
29
minimum input (ex. 0mV); St. 32 is value
24 32
Segnale