Isolated Low Voltage Module OverviewThis document provides detailed specifications for an isolated low voltage module used in various measurement applications. The module supports multiple voltage and current input ranges, with a bandwidth of 2 MHz. It includes additional signal input capabilities for IEPE® constant current powered sensors and RTD resistance temperature detectors.
Specifications- Voltage Input Ranges: 12 ranges from 10 mV to 50 V.
- Current Input: ±20 mA using SE-CUR-SHUNT-1, ±5 A using SE-CUR-SHUNT-4 or -SHUNT-5.
- Bandwidth: 2 MHz.
- Input Coupling: DC or AC, software selectable.
- Gain Linearity: Typically 0.01%, max 0.04% of full scale.
- Input Resistance: 1 MOhm.
- Isolation Voltage: 1 kVRMS.
Accuracy and Stability- 1 Year Accuracy: Varies by range and frequency, with specific percentages of reading and range detailed.
- Gain Drift Range: Typically 10 ppm/°C, max 30 ppm/°C.
- Offset Drift: Varies by range, typically 3 µV/°C for 10 mV to 200 mV.
- Long Term Stability: 100 ppm/sqrt (1000 hrs).
Filter and Signal Characteristics- Filter Selection: Push button or software, with options from 100 Hz to 2 MHz.
- Filter Type: Bessel or Butterworth, with specific characteristics for each.
- Typical SFDR and SNR: Detailed for various bandwidths and input ranges.
- Typical CMRR: Varies by frequency and input range.
Protection and Power- Input Overvoltage Protection: 350 VDC.
- Output Protection: Short to ground for 10 seconds.
- Power Supply: ±9 VDC ±1%.
- Power Consumption: 1.1 W without sensor supply.
Additional Features- Integrated Temperature Sensor: Yes.
- RS-485 Interface: Yes.
- TEDS Support: Hardware support for TEDS with specific chips supported.