The Graphtec GL240 is a compact, multi-channel data logger designed for high-performance measurement of voltage, temperature, humidity, and more, with flexible input options and wireless capabilities.

Key Specifications

• Analog Input Channels: 10 channels, each fully isolated and configurable
• Input Types Supported:
  • Voltage: ±20 mV to ±100 V (12 ranges)
  • Thermocouples: All types directly supported
  • RTD, humidity, pulse, and logic signals
• Sampling Interval: 10 ms to 1 hour
  • Fast sampling (10–50 ms) available for voltage only
• Display: 4.3-inch color LCD for waveform and data visualization
• Memory:
  • Built-in 4 GB flash memory
  • Expandable via USB memory or SD cards (up to 32 GB)
• External I/O:
  • 4 logic/pulse inputs
  • 4 alarm outputs
  • 1 external trigger/sampling input
• Communication Interfaces:
  • USB (host/device)
  • Optional Wireless LAN (via B-568 option)
  • Ethernet (via B-568 option)
• Power Supply: AC adapter or optional battery pack
• Operating Temperature: 0°C to 45°C