S&P BEAS Manual De Instrucciones página 6

3. Adapting the unit for other uses
3.1 Connecting a 0-10 V CD analogical input to J3 (between GND and IN):
Set switch S1.1 to OFF; set switches S1.2 and S1.3 to OFF).
3.2 Settings for the analogicalical input / analogicalical output transfer function:
Voltage output (V DC)
10
Smax
Smin
0
input
a) Range of possible settings for analogicalical input:
If signal voltage:
If signal current:
Factory settings: Emin = 7.2 mA; Emax = 14 .4 m A
These settings are for connecting a SCO2 CO2 sensor.
To change the factory settings:
Example: Emin:
Connect a voltmeter (AC voltage) between GND and Emin on terminal J8:
Factory setting = 1.8 V
Using a flat-headed screwdriver, rotate the trimmer marked " Emin " (e.g. until the voltmeter indicates 2V)
The value matches Emin/4 if analogical input = current
(Example = a reading of 2 V means Emin = 2 x 4 = 8 mA; i.e. as long as the IN input is lower than 8 mA the
output is Smin)
The reading is Emin/2 if input = voltage
(Example = a reading of 2 V means Emin = 2 x 2 = 4 V; i.e. as long as the IN input is lower than 4 V the output is
Smin)
For Emax: follow the same procedure with GND and Emax by rotating the Emax trimmer
(Example = a reading of 4 V means Emax = 4 x 4 = 16 mA; i.e. when input IN is higher than 16 mA the output is
Smax)
Note: Rotating the trimmer anti-clockwise increases the voltage.
b) Range of possible settings for the analogical output:
0 V Smin < 10 V DC
Smin < Smax
Factory settings: Smin = 0 V; Smax = 10 V
:
Emin
0V Emin < 10V DC
Emin < Emax 10 V DC
0 mA Emin < 20 mA
Emin < Emax 20 mA
10 V DC
Emax
Analogicalical
MAX.
current or voltage