YSI IQ SensorNet MIQ/IC2 Module - Manual (Page 24)

Technical data MIQ/IC2
7 - 2 ba76034e01 01/2012
Current inputs
Feed-in
(power supply/isolator)
Measuring channels 2
Physically separated from the
IQ S
ENSOR N ET
Physical input current
range 0.0 ... 22.5 mA
If this range is exceeded, the input switches
itself off for approx. one minute as a protec-
tive measure
Allowed signal ranges 0 ... 20 mA: 0.0 mA
≤
I
≤
20.2 mA
4 ... 20 mA: 3.8 mA
≤
I
≤
20.2 mA
Undefined signal ranges
Display of OFL
(range within the physi-
cal input current range
but outside of the al-
lowed signal range) At the lower end of the signal range
(with signal range 4 ... 20mA only):
I
Error threshold
< I < 3.8 mA
At the upper end of the signal range
(with signal range 0/4 ... 20mA only):
20.2 mA < I < I
Error threshold
Error signal ranges
Display of "----"
(corresponding to
setting of Error detec-
tion) Error detection <= Error threshold:
0.0 mA
≤
I
≤
I
Error threshold
Error detection >= Error threshold:
I
Error threshold
≤
I
≤
22.5 mA
Allowed common-mode
difference between the
measuring channels 10 VDC, 20 VAC
P-P
Measuring uncertainty
(precision) < 0.2 % of the measured value ± 0.01 mA
Load max. 250 Ohm
Electrical data 20.5 - 24 V
Output current max. 240 mA,
permanently short-circuit proof
Requirement or monitor-
ing of the supply voltage
(only applies if a power
supply/isolator is con-
nected)
21.5 ... 24 V
different from the IQ S
ENSOR N ET voltage
monitoring (see system operating manual)
The voltage monitoring values are automat-
ically changed when a power supply/isolator
is connected.