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Gas- und Dampfdurchflußrechner DigiFlow 515
13 Blockschaltbild
INPUTS
0...20mA or
4...20mA and
Pt100
2
2
AMUX
2
ADC 13bit
2
2
AMP
2
Iconst
sampling time 500ms
continual self calibration and temperature
compensation of input circuit and ADC
buzzer
CPU
RAM
ROM
EEPROM
WATCH DOG
VOLTAGE SUPERVISOR
REAL TIME CLOCK (nonvolatile)
RS 232 or
RS485
3
INTRA communication
protocol
display and keyboard
serial interface
optional
PWM controller
+
-
5V
+
o
+/-15V
-
+
15V
-
24/
18V
extern/intern
39
Betriebsanleitung
24/
18V ext/int.
2
int. max. 75mA
INPUTS
max. 30VDC
digital
input
comm
OUTPUTS
max. 30VDC/50mA
max. 250VAC/5A
2
2
2
digital
2
2
outputs
2
or
relay
OUTPUTS
0...20mA or
4...20mA
2
or
2
analog output
2
2
DAC
12bit
LINE
230 or 115 VAC
+
50 or 60Hz
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