DEWESOFT IOLITE V22-2 - Ioliter-8 Xstgs: Specifications

IOLITE®
TECHNICAL REFERENCE MANUAL
4.3.2.1. IOLITEr-8xSTGS: Specifications
Analog inputs
IOLITEr-8xSTGS
Input type
Full / half / quarter bridge strain (3-wire), Potentiometer
Number of channels
8
ADC Type
24-bit oversampled sigma-delta with anti-aliasing filter
Sampling Rate
Simultaneous 20 kS/s per channel (software-selectable)
Voltage Ranges
±1 V
±100 mV
±20 mV
Input Accuracy
±0.02 % of reading, ±0.02 % of range ±10 μV
Typical Noise floor @ 10 kS/s / 1 kS/s / 100 S/s
-107 / -114 / -122 dB
-99 / -107 / -117 dB
-87 / -96 / -108 dB
Typical Dynamic Range @ 10 kS/s / 1 kS/s / 100 S/s
-134 / -133 / -133 dB
-131 / -130 / -129 dB
-121 / -119 / -120 dB
Typ. Crosstalk @ 1 kHz
-120 dB
-126 dB
-114 dB
Typ. CMR @ 50 Hz / 400 Hz / 1 kHz
76 / 74 / 73 dB
97 / 90 / 84 dB
108 / 91 / 83 dB
Gain Drift
Typical 10 ppm/K (max. 20 ppm/K)
Offset Drift
Typical 0.03 μV/K + 2.5 ppm of range/K, max 0.1 μV/K + 9 ppm of range/K
Gain Linearity
< 0.01 %
Input Coupling
DC
Overvoltage Protection
In+ to In-: 6 V continuous
Analog input performance
Bandwidth (-3 dB)
0.433*fs (Sinc5 filter 0.204*fs)
Alias-free Bandwidth
DC to 0.499*fs
Alias Rejection
-105 dB (all sample rates)
Delay Through ADC
34 / fs (Sinc5 filter 3 / fs)
Oversampling
128
Excitation Voltage
Excitation Voltage
Unipolar: 1 V, 2 V, 5 V (see 1)
Excitation Accuracy
±3 % of set ±50 mV
Sense Accuracy
±0.03 % of reading ±2.1 mV
Current Limit
42 mA
Protection
Continuous short to ground
Bridge measurement
Bridge Connection Types
full bridge strain, ½ bridge strain, ¼ bridge strain (3-wire)
Ranges
2 mV/V ... 1000 mV/V free programmable (software ranges)
Used Excitation
1 V
2 V
5 V
Gain accuracy
±0.26 % of reading
±0.155 % of reading
±0.092 % of reading
Offset accuracy
±200 uV/V * Range ±(10 uV / Excitation) (see 2)
Internal Bridge Completion
¼ bridge 120Ω and 350 Ω
Bridge Completion Accuracy
0.05 %; TCR: 5 ppm/K (others on request)
Internal Shunt Resistor
100 kΩ software selectable to SNS+ or SNS- and In+ or In-
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