The Yokogawa 701271 Strain Input Module (DSUB) is a two-channel input module engineered for precision strain and bridge-based measurements within Yokogawa’s ScopeCorder data acquisition ecosystem. It captures mechanical stress and deformation signals from strain gauge sensors at high resolution and sampling speed, enabling structural durability and integrity assessments across industrial and laboratory environments.
Technical Specifications
Measurement Capabilities
• Channels: 2 isolated inputs
• Strain Range: ±500 µSTR to ±20000 µSTR
• mV/V Input Range: ±0.25 mV/V to ±10 mV/V
• Frequency Response: DC to 20 kHz
• Sample Rate: 100 kS/s
• Resolution: 16-bit
Bridge Configuration
• DC bridge support with selectable excitation voltages: 2 V, 5 V, or 10 V
• Gauge Resistance: 120 Ω to 1000 Ω
• Built-in shunt calibration
• Differential amplification with up to 5000× gain
Accuracy & Stability
• DC Accuracy: ±0.5% (strain); ±(0.25% of 10 div) for voltage
• Zero Point Temperature Coefficient: ±(0.02% of 10 div)/°C (Typ.)
• Gain Temperature Coefficient: ±(0.02% of 10 div)/°C (Typ.)
– Key Features
• High-gain differential amplifier architecture enables detailed low-level strain detection
• Programmable bridge excitation supports multiple gauge configurations
• 16-bit acquisition at 100 kS/s maintains signal fidelity across dynamic events
• Shunt calibration simplifies field verification and system validation
• DSUB connector interface ensures reliable signal integrity
– Typical Applications
• Structural health monitoring and fatigue analysis
• Material testing under cyclic and static loading
• Bridge and building strain surveillance
• Mechanical component stress mapping
• Durability assessment in heavy industrial equipment
– Compatibility & Integration
Compatible with Yokogawa DL350, DL850 series, DL950, and SL1000 data acquisition systems. Requires D-Sub strain head interfaces such as models 701957 or 701958.
