Overview

The BACHMANN DMS202 Strain Gauge Input Module is designed for precise measurement and monitoring of strain gauges in various industrial applications, providing high accuracy and reliability.

Technical Specifications

• Bridge Supply:

  • Carrier Frequency: 5 kHz ±2%
  • Amplitude: 4 VRMS ±2%
  • Synchronization of the 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, 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

• Approvals / Certificates:

  • General: CE, cULus, CCC

• 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)