The Graphtec GL840-M is a multi-channel data logger designed for flexible, high-precision measurement across a wide range of industrial and research applications. It supports up to 200 analog input channels and offers advanced connectivity and data visualization features.

Key Specifications

• Model: GL840-M (Multi-input type)
• Analog Input Channels: 20 standard, expandable to 200 channels
• Input Types Supported:
  • Voltage: ±20 mV to ±100 V (12 ranges)
  • Thermocouples: All types
  • RTD: PT100 and PT1000
  • Humidity, pulse, and logic signals
• Isolation: Full channel-to-channel isolation (up to 60 V)
• Sampling Interval: 10 ms to 1 hour (10–50 ms for voltage only)
• Display: 7-inch color LCD for waveform and data visualization