Dewetron PUREC, Technical Reference Manual

Page: 16 / 58

16 16
MAIN SYSTEM
Input types
Input Sensor excitation Bandwidth
(max.)
consider limit of PU[REC]
Accuracy
(typ.)
Sensor connection
Direct voltage input ±10 V; ±5 V ±5 V; 12 V DC to 70 kHz 0.02 % D-SUB-9
MSI2-250R-20mA
1)
4 to 20 mA sensors n/a DC to 70 kHz ±0.1 %
Miniature spring
terminals
MSI2-STG 1)
Bridge-type sensors
full-bridge, half-bridge,
quarter-bridge 120
Ω
and 350
Ω
5 V and 10 V 60 kHz ±0.1 %
Miniature spring
terminals
MSI2-LVDT
1)
LVDT and RVDT sensors,
5- or 6-wire connection
3 V
at 2.5, 5 or 18 kHz
1 kHz ±0.1 % Soldering pads
MSI-BR-ACC 1)
IEPE® sensors,
typ. accelerometer, microphone
4 mA 1.4 Hz to 70 kHz ±0.2 % BNC
MSI2-CH-x
1)
Charge type sensors
up to 100 000 pC
n/a 0.08 Hz to 70 kHz ±0.5 % BNC
MSI2-TH-x 1)
Thermocouple sensors
standard models for type K, J, T,
others on request
n/a DC to 70 kHz ±1 °C Mini TC socket
MSI-BR-V-200
1)
Voltage up to 200 V n/a DC to 60 kHz ±0.1 % BNC
MSI2-V-600 1) Voltage up to 600 V n/a DC to 60 kHz ±0.1 % Banana sockets
MSI-BR-RTD
1)
RTD sensors
Pt100, Pt200, Pt500, Pt1000,
Pt2000; 2-, 3- and 4-wire connection
1.25 mA DC to 10 kHz ±0.1 %
Binder 712 series
5-pin socket
1) MSIs are automatically detected
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V
200
V
600
Direct voltage input specification
Input connector
16x 9-pin female D-SUB
Input ranges
±10 V; ±5V
Sensor excitation ±5 V
Accuracy: ±0.2 %; balanced around GND; remote sense support max. 40 mA per channel
Protection: Continuous short to GND; short circuit limit is 70 mA
12V
Accuracy: ±5 %; max. 1 A in total for all channels, including EPAD2 supply
Protection: Self resetting fuse."
Input noise
0 to 10 Hz: 10 µV
PP
full bandwidth: 1.35 mV
PP
Input impedance
1 M
Ω
single ended, 2 M
Ω
differential
Input bias current
<25 pA
Input coupling
DC
Accuracy
1)
Voltage
DC to 1 kHz ±0.02 % of reading ± 0.01 % of range ±20 µV
>1 kHz to 5 kHz ±0.5 % of reading ± 0.01 % of range ±20 µV
>5 kHz to 10 kHz
2)
±1 % of reading ± 0.01 % of range ±20 µV
Gain drift
typical 10 ppm/°C max. 20 ppm/°C
Offset drift
typical 0.3 µV/°C + 10 ppm of range/°C, max 15 µV/°C + 20 ppm of range/°C
Typical Signal-to-noise ratio, Spurious-
10 V range
free SNR, Effective number of Bits, VPP
2)
SNR SFDR 3) ENOB 4) Noise peak to peak
Sample rate
[dB] [dB] [Bit] [mV
PP
]
0.1 kS/s
127 130 20.8 0.015
1 kS/s
118 130 19.3 0.055
10 kS/s
109 130 17.8 0.22
20 kS/s
106 130 17.3 0.33
50 kS/s 2)
102
2)
130
2)
16.7 0.52
100 kS/s 2)
99 2) 130 2) 16.2 0.66
200 kS/s
2)
96 2) 125 2) 15.7 1.00
Linearity
<20 ppm
Input configuration
differential
Typical THD
-95 dB
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