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SIRIUS

® 

TECHNICAL REFERENCE MANUAL 



5.9. CHG / CHG+ 



The CHG modules are perfect for charge measurements anl also sound and vibration IEPE channels. 

5.9.1. CHG: Speciﬁcations 

Inputs 

Input types 

Voltage 

IEPE 

Charge 

ADC Type 

24-bit delta-sigma dual core with anti-aliasing ﬁlter 

Sampling Rate 

Simultaneous 200 kS/sec 

Ranges (Dual Core Low Range) 

±10 V (500 mV) 

±500 mV (NA) 

Input Accuracy (Dual Core) 

±0.05 % of reading ±5 (0.5) mV 

±0.05 % of reading ±0.5 mV 

Typ. Dynamic Range @ 10kS (Dual Core) 

-140 dB (-155 dB) 

-130 dB (NA) 

Typ. Noise ﬂoor @ 50 kS (Dual Core) 

-107 dB (-124 dB) 

-98 dB (NA) 

Typ. CMR @ 50 Hz / 1 kHz 

140 dB / 120 dB 

Gain Drift 

Typical 10 ppm/K, max. 30 ppm/K 

Offset Drift 

Typical 1 μV/K + 5 ppm of range/K, max 5 μV/K + 10 ppm of range/K 

Gain Linearity 

<0.02 % 

Inter Channel Phase-mismatch 

0.02° * ﬁn [kHz] + 0.1° (@ 200 kS/sec) 

Channel Crosstalk 

-180 dB @ 50 Hz; -160 dB @ 1 kHz 

Input Coupling 

DC, AC (0.1 Hz, 1 Hz, 10 Hz or 100 Hz) 

Input Impedance 

1 MΩ in parallel with 100 pF 

Overvoltage Protection 

In+ to In-: 50 V continuous; 200 V peak (10 msec) 

IEPE mode 

Excitation 

4, 8 or 12 mA 

Compliance voltage 

25 Volt 

Output Impedance 

>100 kΩ 

Sensor detection 

Shortcut: <4 Volt; Open: >19 Volt 

Charge ranges (Low Range) 

±100 000 pC (5000 pC) 

±10 000 pC (500 pC) 

Input accuracy (HPF 0.1 Hz) 

±0.5 % of reading ±20 pC 

±0.5 % of reading ±5 pC 

Dynamic Range @ 10 kS (Dual Core) 

-130 dB (-150 dB) 

-120 dB (-140 dB) 

SNR @ 50 kS (Dual Core) 

107 dB (120 dB) 

105 dB (118 dB) 

Input coupling 

0.01 Hz, 0.03 Hz, 0.1 Hz, 0.5 Hz, 1 Hz, 10 Hz or 100 Hz 

Charge injection 

1 Vrms, 20 Hz, 0.5 % accuracy 

Counters (only in CHG+ type) 

Inputs 

1 digital counter input 

3 digital inputs 

Fully synchronised with analog data 

Counter modes 

counting, waveform timing, encoder, tacho, gear-tooth sensor 

General counter speciﬁcations 

See "SIRIUS counter speciﬁcations" 

Additional speciﬁcations 

Input connector 

BNC or TNC (others on request) 

TEDS support 

IEPE mode only 

SIRIUS

V20-1 152 / 336  

Brand	DEWESOFT
Model	SIRIUS Series
Category	Data Loggers
Language	English

DEWESOFT SIRIUS Series User Manual

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