Endress+Hauser eco-graph RSG20 Manual De Utilización página 67

7. Serial interfaces
The RS232/RS485 serial interface is accessible on the rear of the unit (9 pin Sub-D
socket). See "Connections/terminal layout".
Attention
• Please take note that all pins not used on the socket must not be wired up.
• RS232 and RS485 cannot be used simultaneously.
8. Technical data
Reference conditions
Power supply 230 V AC +/- 10%, 50 Hz +/- 0.5 Hz
1
Warm up time > /
Ambient temp. 25 °C +/- 5 °C
Air humidity 55 +/- 10 % r. F.
Scan rate 250 ms/channel
Resolution Approx. 10000 steps (U/f convertor)
Galvanic isolation Test voltage 500 V (channel - channel)
Presettable 0 ... 999.9 seconds, per analogue input, basic
Dampfing
system damping can be ignored
Each channel has individually selectable measurement range
(Smallest range 0.5 mA): max. 100 mA (volt drop <1 V)
Current
0...20 mA
measurement
4...20 mA
range/accuracy
-20...+20 mA
(Smallest range 5 mV): Input impedance >1 MOhm/ >530 kOhm
(<200 mV / ≥ 200 mV)
Voltage 0...100 mV
measurement
0...200 mV
range/accuracy 0...1 V
0...10 V
-10...+10 V
(Smallest measurement range 15K): (Cable compensation ≤ 30 Ohm per core)
Connections: 2/3- or 4-wire circuits (with shielded cable)
Measurement current: ≤ 500 µA
Monitoring cable open or short circuit: Indicates "——-" in the display
Resistance
Pt100 -200 . . . +850°C Linearisation: DIN ± 0.8 K (2/3cable) ± 0.5 K (4 cable)
thermometer
Pt100 -200 . . . +650°C Linearisation: JIS (C1604-81)
(RTD)
± 0.8K (2/3-wire)
Pt500 -200 . . . +850°C Linearisation: DIN ± 0.8K (2/3-cable) ± 0.5K (4-cable)
Pt1000 -200 . . . +850°C Linearisation: DIN ± 0.8K (2/3-cable) ± 0.5K (4-cable)
Ni100 - 60. . . +180°C
hour
2
+/- 20 µA
+/- 20 µA
+/- 44 µA
+/- 80 µV
+/- 240 µV
+/- 1 mV
+/- 10 mV
+/- 20 mV
± 0.5K (4-wire)
Linearisation: DIN ± 0.4K (2/3-cable) ± 0.4K (4-cable)
7. Serial interface / 8. Technical data
7.1 RS232/RS485 (only
with the digital I/O
option)
Measurement
component
65