Dewetron PUREC, Technical Reference Manual

Page: 29 / 58

29 29
450182 • PU[REC] • Technical Reference Manual • Printing version 1.0.0 • November 2
nd
, 2020
MAIN SYSTEM
Strain gauge measurement via
> Full, half or quarter bridge
> 120 and 350 Ω quarter bridge
> 5 V or 10 V excitation with remote sense
> Simple connection without soldering
MSI2-STG
Input range 20 mV/V
at 5V excitation
Sensor excitation voltage 5 V or 10 V (±5 V); remote sense support
Maximum current 40 mA per channel
Protection Continuous short to ground; short circuit limit is 70mA
Supported bridge-types Full bridge 4 or 6-Wire
Half bridge 3 or 5-Wire
Quarter bridge 3-Wire; 120 Ω and 350 Ω bridge completion
DC accuracy ±0.2 % of reading ±5 μV/V
Bandwidth (-3 dB) 60 kHz
Signal-to-noise ratio; spurious-free SNR; 20 mV/V range
Effective number of Bits; Noise μV/V
PP
SNR SFDR ENOB Noise
PP
Sample rate [dB] [dB] [Bit] [μV/V
PP
]
5 kS/s 101 124 16.5 0.88
10 kS/s 98 125 16.0 1.4
20 kS/s 95 123 15.5 1.9
50 kS/s 91 120 14.9 3.3
100 kS/s 88 115 14.4 4.5
200 kS/s 86 110 13.9 7
Drift Offset: 0.4
µ
V/°C; Gain: max 50 ppm°C
Sensor connection Push-in spring connection; 0.14 to 0.5mm²; AWG 26 to 20
TEDS For adapter identification and calibration data
The MSI2-STG is designed to connect nearly every strain gauge sensor.
Various bridge-types can be configured by jumper. That makes it very flexible and an ideal solution for strain gauge
measurement on fixed installations .
It is also a perfect solution for harsh electronic environment . Because this tiny amplifier can be mounted directly next
to the sensor with very short cables in between. The signal is immediately amplified by a factor of 50. This reduces the
impact of electromagnetic disturbances by the same factor. The maximum cable length between MSI and the PUREC is
50 meters.
MSI2-STG
up to 50 m
MSI2-STG Sensor