Fema I4 Series, User Manual

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SERIES I4 · Model I4L
Section INDUSTRIAL . ISOLATED SIGNAL CONVERTERS
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10.2 Millivolts signals
MEASURING MILLIVOLT SIGNALS
The instrument can be configured to measure millivolt
signals from any source, with pre-configured ranges from
0/5 mV up to 80 mV. See connections at ‘Table 14’. Bipolar
ranges from ±5 mV up to ±80 mV can also be configured.
PREDEFINED CONFIGURATION CODES
See ‘Table 15’ for a list of predefined input-output configuration codes.
To activate a code see section 13.1.
CUSTOMIZED SIGNAL RANGES
To customize the input and / or output signal ranges, access the
‘ Advanced scaling ’ menu (see section 13.4).
MAXIMUM OVERSIGNAL AND PROTECTIONS
‘ Maximum oversignal ’ is the maximum signal accepted by the instrument.
Higher signal values may damage the instrument. Lower signal values
are non destructive but may be out of accuracy specifications.
OUTPUT SIGNAL
The output signal is configurable to 4/20 mA (active and passive) and
0/10 Vdc.
Table 14 | Connection examples for millivolt signals
1 2 3
not connected
mV -
not connected
4 5 6
not connected
mV +
not connected
Table 15 | Input signal ranges for millivolt signals
Input
range
Code for
4/20 mA output
Code for
0/10 Vdc output
Accuracy
(% FS)
Max.
oversignal
Zin
0/5 mV 050 150 <0.10 % ±12 Vdc 10 MOhm
0/10 mV 051 151 <0.07 % ±12 Vdc 10 MOhm
0/15 mV 052 152 <0.07 % ±12 Vdc 10 MOhm
0/20 mV 053 153 <0.07 % ±12 Vdc 10 MOhm
0/25 mV 054 154 <0.07 % ±12 Vdc 10 MOhm
0/30 mV 055 155 <0.07 % ±12 Vdc 10 MOhm
0/40 mV 056 156 <0.05 % ±12 Vdc 10 MOhm
0/50 mV 057 157 <0.05 % ±12 Vdc 10 MOhm
0/60 mV 058 158 <0.05 % ±12 Vdc 10 MOhm
0/70 mV 059 159 <0.05 % ±12 Vdc 10 MOhm
0/80 mV 060 160 <0.05 % ±12 Vdc 10 MOhm
±5 mV 061 161 <0.10 % ±12 Vdc 10 MOhm
±10 mV 062 162 <0.07 % ±12 Vdc 10 MOhm
±20 mV 063 163 <0.07 % ±12 Vdc 10 MOhm
±30 mV 064 164 <0.07 % ±12 Vdc 10 MOhm
±40 mV 065 165 <0.05 % ±12 Vdc 10 MOhm
±50 mV 066 166 <0.05 % ±12 Vdc 10 MOhm
±60 mV 067 167 <0.05 % ±12 Vdc 10 MOhm
±70 mV 068 168 <0.05 % ±12 Vdc 10 MOhm
±80 mV 069 169 <0.05 % ±12 Vdc 10 MOhm
10. Input signals (cont.)
mV
+
-