IMC CANSAS - Page 509

UNI8 509
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
Bridge measurement
Parameter
Value typ.
min. / max.
Remarks
Measurement modes
full bridge
half bridge
quarter bridge
half and quarter bridge with 2.5V and 5V
bridge excitation voltage only
Input ranges
1000 mV/V, 500 mV/V, 200 mV/V,
100 mV/V
... 0.5 mV/V
... 1 mV/V
... 2 mV/V
bridge excitation voltage: 10 V
bridge excitation voltage: 5 V
bridge excitation voltage: 2.5 V
Input impedance
20 M
1 %
differential, full bridge
Gain uncertainty
0.02%
0.05%
Drift
+20 ppm/K T
a
+80 ppm/K T
a
T
a
=|T
a
-25°C|; ambient temp. T
a
Offset uncertainty
0.01 %
0.02%
of input range after automatic bridge
balancing
Drift
+16 nV/V/K T
a
+0.2 µV/V/K T
a
T
a
=|T
a
-25°C|; ambient temp: T
a
Bridge excitation voltage
10 V
5 V
2.5 V
0.5%
Not for quarter bridge measurement
Allowable cable impedance
"one way" not including
return line
<8
<16
<24
10 V bridge voltage 120
5 V bridge voltage 120
2.5 V bridge voltage 120
Temperature measurement
Thermocouple measurement
Parameter
Value typ.
min. / max.
Remarks
Input ranges
J, T, K, E, N, S, R, B, L
according IEC 584
resolution: approx. 0.1 K
Uncertainty
1 K
sensor type K at 20°C
over total temperature range
(Pt100 inside of connector)
Input impedance
20 M
1%
differential
RTD-measurement
Input range
-200°C to 850°C
resolution: approx. 0.016 K
Uncertainty
0.2 K
+0.02%
+0.01 K/K T
a
4-wire measurement
of reading
T
a
=|T
a
-25°C|; ambient temp: T
a
Sensor feed
1.23 mA
Resistor measurement
Input range
0 to 800