Description
The National Instruments SCC-SG24 Strain/Bridge Module, with Part Number 777459-37, is designed for precise strain measurements utilizing a full bridge configuration with a minimum resistance of 250 ohms. It features two differential input channels that are safeguarded by overvoltage protection of +42 VDC, whether powered on or off, and each channel is equipped with its own circuitry for offset-nulling.
The module also boasts a built-in excitation circuit with an instrumentation amplifier for each channel, enhancing the reliability and accuracy of strain measurements. Its output gain capability is fixed at a value of 100, ensuring a robust signal output.
Users can leverage the full-bridge configuration support for Types I and II, which focus on bending strain, as well as Type III for axial strain measurements. The shunt calibration feature is another key aspect, enabling the correction of gain errors to maintain measurement precision.
With an input signal range of ±100 mV and a fixed gain of 100, the SCC-SG24 module is capable of accommodating a variety of signal inputs. Connection to the module is facilitated by a 20-pin right-angle male connector and a 6-pin screw terminal.
In terms of noise levels, the module excels with an extremely low input noise of 1 µV RMS, minimizing interference in readings. The analog input bandwidth is rated at 1.6 kHz, based on a single pole RC filter, which is suitable for a range of dynamic applications. To further ensure signal fidelity, the module provides a common mode rejection ratio of at least 110 dB, highlighting its ability to mitigate unwanted noise and signal variations.
| Specification | Detail |
|---|---|
| Part Number | 777459-37 |
| Product | National Instruments SCC-SG24 Strain/Bridge Module |
| Strain Measurement | Full bridge configuration (min. resistance 250 ohms) |
| Input Channels | 2 differential with overvoltage protection of +42 VDC (powered on and off) |
| Channel Circuitry | Separate for each channel for offset-nulling |
| Excitation Circuit | Built-in with instrumentation amplifier for each channel |
| Output Gain Capability | 100 |
| Full-Bridge Configuration Support | Types I, II (bending strain), III (axial strain) |
| Shunt Calibration | Supported for gain error rectification |
| Input Signal Range | ±100 mV (fixed gain of 100) |
| Connectors | 1 x 20-pin right-angle male connector, 1 x 6-pin screw terminal |
| Input Noise (RMS) | 1 µV |
| Analog Input Bandwidth | 1.6 kHz (single pole RC filter) |
| Common Mode Rejection Ratio | 110 dB min |
Q1: What is the minimum strain gauge resistance that the National Instruments SCC-SG24 Strain/Bridge Module can support, and what are its key features for ensuring high precision in strain measurements?
A1: The purpose of the built-in excitation circuit with an instrumentation amplifier for each channel on the National Instruments SCC-SG24 Strain/Bridge Module is to enhance the reliability and accuracy of strain measurements by providing a stable excitation voltage to the strain gauges and amplifying the signal for improved signal quality and measurement precision.
Q2: What features enhance the reliability and accuracy of strain measurements in the National Instruments SCC-SG24 Strain/Bridge Module with Part Number 777459-37?
A2: The National Instruments SCC-SG24 Strain/Bridge Module, Part Number 777459-37, is specifically designed to support Types I and II bending strain measurements, as well as Type III axial strain measurements, with its built-in excitation circuit and shunt calibration feature.
Q3: What is the minimum resistance required for the full bridge configuration supported by the National Instruments SCC-SG24 Strain/Bridge Module with Part Number 777459-37, and what are its key features designed to enhance strain measurement accuracy and reliability?
A3: The reliability and accuracy of strain measurements in the National Instruments SCC-SG24 Strain/Bridge Module with Part Number 777459-37 are enhanced by its built-in excitation circuit with an instrumentation amplifier for each channel, fixed output gain capability of 100, full-bridge configuration support for different types of strain, shunt calibration feature for correcting gain errors, extremely low input noise of 1 µV RMS, and a high common mode rejection ratio of at least 110 dB.
Q4: What is the purpose of the built-in excitation circuit with an instrumentation amplifier for each channel on the National Instruments SCC-SG24 Strain/Bridge Module?
A4: The National Instruments SCC-SG24 Strain/Bridge Module can support a minimum strain gauge resistance of 250 ohms, and its key features for ensuring high precision in strain measurements include two differential input channels with overvoltage protection, built-in excitation circuits with dedicated instrumentation amplifiers per channel, a fixed output gain of 100, full-bridge configuration support for various types of strain, shunt calibration for correcting gain errors, extremely low input noise of 1 µV RMS, and a
Q5: What types of strain measurements is the National Instruments SCC-SG24 Strain/Bridge Module, Part Number 777459-37, specifically designed to support with its built-in excitation circuit and shunt calibration feature?
A5: The National Instruments SCC-SG24 Strain/Bridge Module with Part Number 777459-37 requires a minimum resistance of 250 ohms for its full bridge configuration, and its key features designed to enhance strain measurement accuracy and reliability include two differential input channels with overvoltage protection, a built-in excitation circuit, offset-nulling for each channel, a fixed output gain of 100, full-bridge configuration support for Types I, II, and III strain measurements, shunt calibration for
