Bachmann DMS202 Strain Gauge Input Module

Bridge Supply

• Carrier Frequency: 5 kHz ±2%
• Amplitude: 4 VRMS ±2%
• Synchronization of Carrier Frequency: Optional
• Synchronization Range: 5 kHz ±2%

Strain Gauge Amplifier Input

• Input Resistance: > 5 MΩ
• Desired Signal Bandwidth: 1 kHz
• Resolution: 12 bit
• Max. Input Common Mode Voltage: 10 V (no overdrive)
• CMRR (0 to 5 kHz): > 80 dB
• Wire Break Monitoring: Yes, with error message
• Galvanic Isolation from System: 500 V
• Monitoring of External Voltage: Yes, with power-fail signal
• Conversion Time:
  • 12.5 µs for one channel
  • 25 µs for two-channel operation
• Measurement Range Selection: 2.0 / 4.0 / 8.0 / 16.0 mV or Auto Range
• Measurement Range Switchover: Automatic or via software

Measurement Outputs

• Output Voltage: 0 to 10 V
• Internal Resistance: < 2 Ω
• Load Resistor: > 2.5 kΩ
• Special Functions:
  • Peak value capture
  • Electronic capacity comparison
  • Carrier frequency synchronization

External Power Supply

• Voltage Range: 18 to 34 VDC
• Current Consumption (External): 100 mA at 24 VDC
• Reverse Polarity Protection: Yes
• Galvanic Isolation from System: 500 V

Ambient Conditions

• Operating Temperature: 0 to +60 °C
• Relative Humidity (Operation): 5 to 95 % without condensation
• Storage Temperature: -40 to +85 °C
• Relative Humidity (Storage): 5 to 95 % without condensation
• Pollution Degree: 2 (without condensation; according to IEC 60664-1)