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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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NISCXI-1122 Arkusz danych(PDF) 1 Page - National Instruments Corporation |
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NISCXI-1122 Arkusz danych(HTML) 1 Page - National Instruments Corporation |
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1 / 9 page  300 National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com SCXI Isolated Universal Input Modules Overview The National Instruments SCXI-1121 and SCXI-1122 modules are designed for a wide variety of sensor and signal inputs requiring isolation. The NI SCXI-1121 offers independent jumper-configurable isolation amplifiers, filters, and excitation sources for each channel. The SCXI-1122 offers an isolation amplifier, filter, and excitation source for all channels. Both SCXI-1121 and SCXI-1122 modules offer at least 250 Vrms working isolation and can acquire strain, RTD, thermocouple, millivolt, volt, 250 V, 0 to 20 mA, and 4 to 20 mA current input signals. Both modules can multiplex their channels into a single channel of the controlling DAQ device. The SCXI-1121 also offers parallel-mode operation. If you are specifically interested in strain measurements, consider using the NI SCXI-1520 Universal Strain Gauge Input Module. For thermocouple measurements, consider using the NI SCXI-1102 Thermocouple Input Module. For RTD measurements, consider using the SCXI-1102 in combination with the SCXI-1581 Current Excitation Module or the PXI-4070 DMM with SCXI-1127 switch. Analog Input SCXI-1121 The analog inputs of the SCXI-1121 consist of four isolated instrumentation amplifiers. You can configure each channel independently using jumpers for input ranges of ±2.5 mV to ±5 V. You can extend the input range for each channel to ±250 VDC/ ±250 VAC with the SCXI-1327 terminal block. Each channel also includes a lowpass filter that you can configure using jumpers for 4 Hz or 10 kHz. You can sample channels at a rate up to 333 kS/s (3 µs per channel in multiplexed mode). Each channel offers transducer-specific features such as bridge completion, configurable voltage and current excitation, bridge balancing, and shunt calibration depending on the configured terminal block. Each channel is individually isolated with a working voltage limit of 250 Vrms between channels or channel to earth. Finally, the SCXI-1121 is CE certified as double insulated, Category II, for 250 Vrms of operational isolation. SCXI-1122 The SCXI-1122 consists of 16 relay multiplexers that route the input channels to a single isolated instrumentation amplifier and lowpass filter. You can program all inputs together for a range of ±5 mV to ±250 V. You can program the lowpass filter setting for all input channels for either 4 Hz or 4 kHz. With this relay multiplexer architecture, you are limited to a maximum sampling rate of 100 S/s for the 4 kHz filter setting, and 1 S/s for the 4 Hz filter setting on all channels in your scan list. Thus, the SCXI-1122 is not intended to be used for the scanning of multiple channels. It should be used to acquire multiple samples from a single channel before acquiring from the next channel. This module also offers cold-junction compensation, bridge completion, and a single voltage and current excitation source with remote sensing. You can configure the SCXI-1122 for 4-wire scanning mode, accepting up to eight 5 k devices. You can also connect up to 16 devices in series. Each channel is individually isolated with a working common-mode voltage of 250 Vrms between channels or 480 Vrms channel to earth. Finally, the SCXI-1122 is CE certified as double insulated, Category II, for 250 Vrms of operational isolation. •Isolated analog inputs •Isolated voltage and current excitation •Signal inputs from millivolts to ±250 V •Lowpass filtering •Shunt calibration • NI-DAQ driver software simplifies configuration, measurements, and scaling SCXI-1121 •4 isolated input channels •4 isolated excitation channels • 250 Vrms working isolation per channel • Offset nulling and shunt calibration with SCXI-1321 SCXI-1122 • 16 channels • 100 S/s (4 kHz filter), 1 S/s (4 Hz filter) •2 excitation sources • 480 Vrms working isolation per channel Operating Systems •Windows 2000/NT/XP Recommended Software • LabVIEW • LabWindows/CVI •Measurement Studio • VI Logger Driver Software • NI-DAQ 7 NI SCXI-1121, NI SCXI-1122 Table 1. Signal Compatibility ±5 mV 0 to 20 mA SCXI Module Bridge RTD Thermocouple ±2.5 mV to ± 250 V 4 to 20 mA SCXI-1121 ✓✓ ✓ ✓ ✓ ✓ SCXI-1122 ✓✓ ✓ – ✓✓ |
Podobny numer części - NISCXI-1122 |
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Podobny opis - NISCXI-1122 |
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