Dewetron HSI-LV, Technical Reference Manual

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10
HSI-LV
HSI-LV
Input ranges 10 mV, 20 mV, 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2.5 V, 5 V, 10 V, 25 V, 50 V
Button selectable ranges 10 mV, 50 mV, 200 mV, 1 V, 5 V, 10 V, 50 V
Rated input voltage 33 V
RMS
, 46.7 V
PEAK
, 70 V
DC
according to EN-61010-1 and EN-61010-2-30
1 year accuracy
1)
Range Signal frequency Accuracy
Bipolar
10 mV to 100 mV DC ±0.02 % of reading ±60 µV
2.5 V DC ±0.02 % of reading ±0.1 % of range
200 mV to 50 V DC ±0.02 % of reading ±0.05 % of range
10 mV to 100 mV 0.1 Hz to 5 kHz ±0.1 % of reading ±30 µV
>5 kHz to 50 kHz ±0.4 % of reading ±30 µV
>50 kHz to 100 kHz ±(0.016*f) % of reading ±0.1 % of range
>100 kHz to 1 MHz ±(0.010*f) % of reading ±1 % of range
>1 MHz to 2 MHz ±(0.014*f) % of reading ±3 % of range
200 mV to 50 V 0.1 Hz to 500 Hz ±0.05 % of reading ±0.01 % of range
>500 Hz to 5 kHz ±0.1 % of reading ±0.05 % of range
>5 kHz to 50 kHz ±0.4 % of reading ±0.05 % of range
>50 kHz to 100 kHz ±(0.016*f) % of reading ±0.1 % of range
>100 kHz to 1 MHz ±(0.010*f) % of reading ±1 % of range
>1 MHz to 2 MHz ±(0.014*f) % of reading ±3 % of range
Unipolar 10 mV to 100 mV DC ±0.02 % of reading ±60 µV
200 mV to 50 V DC ±0.02 % of reading ±0.08 % of range
Input coupling DC or AC software selectable (1.5 Hz standard, custom on request down to 0.01 Hz)
Gain linearity Typically 0.01 %; max. 0.04 % of full scale
Gain drift range Typically 10 ppm/°C (max. 30 ppm/°C)
Offset drift 10 mV to 200 mV: Typically 3 µV/°C
500 mV to 50 V: Typically 10 ppm of range/°C
Long term stability 100 ppm/sqrt (1000 hrs)
Input resistance 1 MOhm
Bandwidth (-3 dB) 2 MHz
Signal delay @ full bandwidth approx. 405 ns
Filter selection Push button or software
Filter 100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz, 300 kHz, 1 MHz, 2 MHz
2)
Filter type Bessel or Butterworth 40 dB/dec
Filter characteristics
100 Hz to 1 MHz
2 MHz
Butterworth or Bessel 40 dB/dec (2
nd
order; ±1.5 dB @ f
0
)
Butterworth 60 dB/dec (3
rd
order; 0 to -3 dB @ 2 MHz)
Typical SFDR and SNR:
20 mV
1 V
50 V
10 kHz bandwidth 100 kHz bandwidth 1 MHz bandwidth 2 MHz bandwidth
SFDR SNR SFDR SNR SFDR SNR SFDR SNR
88 dB 78 dB 88 dB 71 dB 77 dB 60 dB 76 dB 56 dB
110 dB 98 dB 110 dB 95 dB 93 dB 82 dB 84 dB 75 dB
110 dB 98 dB 110 dB 95 dB 94 dB 82 dB 85 dB 75 dB
Typical CMRR
50 Hz
1 kHz
10 kHz
100 kHz
10 mV to 1 V range: 2.5 V to 50 V range:
130 dB 100 dB
120 dB 60 dB
95 dB 40 dB
75 dB 20 dB
Input overvoltage protection 350 V
DC
Isolation voltage 1 kV
RMS
3)
Sensor supply ±9 V (±1 %), 12 V (±5 %), 200 mA resettable fuse protected
4)
Output voltage ±5 V
Output resistance 10 Ohm
Maximum output current 5 mA
Output protection Short to ground for 10 sec.
Power On default settings Software programable
Power supply ±9 V
DC
±1 %
Power consumption 1.1 W without sensor supply
Special functions Integrated temperature sensor
RS-485 interface Yes
TEDS Hardware support for TEDS (Transducer Electronic Data Sheet)
Supported TEDS chips DS2406, DS2430A, DS2432, DS2433, DS2431
Supported MSI MSI-V-ACC, MSI-V-RTD
1)
Conditions for accuracy: Module temperature is calibration temperature ±5 °C; humidity is 30 to 90 RH.
AC accuracy: the highest fi lter (2 MHz) has to be activated. f = signal frequency in kHz.
For the 2 year accuracy multiply all % of range and % of reading values by 1.5.
2)
2 MHz fi lter: exclusively for Butterworth 60 dB/decade - refer to fi lter specifi cations. Please consider possible bandwidth limitation of further components in the
measuring chain, e.g. A/D card or signal conditioning mainframe.
3)
Although the rated input voltage is 33 V
RMS
, 46.7 V
PEAK
or 70 V
DC
according to EN-61010-1 and EN-61010-2-30, the galvanic isolation has been tested with
1 kV
RMS
for 1 min.
4)
Overall current should not exceed DEWE-30-xx maximum power.
continued from previous page
Front panel control
LED indication:
The HSI-LV series module has a set of 8 LEDs showing the current input range (constant active)
and filter range (flashing) setting.
Filter Range Range Filter
20 Hz 50 V 200 mV 10
5
10 Hz 10 V 50 mV 10
4
3 Hz 5 V 10 mV 10
3
1 Hz 1 V U/B 10
2
The U/B LED shows the input mode: If this LED is off, the bipolar input range is selected, otherwise the
unipolar mode is selected.
Power On Default function
You can store the actual settings of the module in the internal EE-Prom memory. Once the module restarts,
it comes up automatically with these setting. This is important for stand alone applications and for fail save
reasons. If the function is deactivated the module automatically remembers the last pushbutton selected
range and filter.
Push button operation:
Select range: Push the
RANGE
button several times shortly until the LED displays the
desired input range.
Select filter: Push the FILTER button once - the LEDs will flash for approx. 3 seconds and
display the current filter setting. Push the FILTER button within the three seconds
several times until the flashing LED displays the desired filter range.
Change input mode: Keeping the
RANGE
button pressed for more than 3 seconds, the input mode
changes from unipolar to bipolar or vice versa.