Fluke 2638A Hydra Series III Data Acquisition System/Digital Multimeter

Rent Fluke 2638A Hydra Series III Data Acquisition System/Digital Multimeter
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The Fluke 2638A Hydra Series III Data Acquisition System/Digital Multimeter continues the Hydra Series legacy of precision, multi-channel data acquisition. The new Series III improves on Hydra's industry-leading thermocouple accuracy and adds a new dimension to how you collect and view data in a portable system.

DC measurement accuracy of 0.0024 %, basic 0.5 °C thermocouple accuracy, full-color display, easy-to-use menu system and industrial safety ratings put the 2638A in a category of its own as a precision data acquisition system. The dedicated 6.5 digit digital multimeter (DMM) mode provides additional utility and value.

The 2638A is expandable from 22 to 66 channels of differential analog inputs. A flexible, 22-channel Universal Input Connector lets you connect and disconnect any type of input to any channel, quickly and easily. Selectable inputs include dc voltage, ac voltage, resistance, thermocouple, RTD, thermistor, frequency and dc and ac current. You can also use the 2638A with optional software and other Fluke data loggers to create a flexible, customized data acquisition system with an almost unlimited number of channels.


  • DC accuracy of 0.0024 %
  • Thermocouple accuracy of 0.5 °C
  • Up to 66 universal differential isolated inputs
  • On-screen color trend graphing of up to four channels at a time
  • Easy-to-use menu system for setup and data management
  • Input types: ac V, dc V, ac I, dc I, thermocouple, PRT (2, 3, 4 w), thermistor, resistance (2-4 w), frequency
  • Multi-channel real-time data display
  • 6.5-digit bench DMM function for front-panel inputs
  • Monitor function for real-time viewing and charting between scans
  • 20 on-board math channels
  • One-button screen capture of chart or data displays
  • 45 channels/second basic dc scan rate
  • Internal 57,000 scan/setup file memory
  • USB flash drive support
  • Data security features
  • 300 V CAT II input safety rated


DC Volts: Range: 100 MV to 300 V
Resolution: 0.1 µV to 1 mV
Accuracy: 0.0024%
AC Volts: Range: 100 mV to 300 V
Resolution: 0.1 µV to 1 mV
Accuracy: 0.11%
Resistance: Range: 100 Ω to 100 MΩ
Resolution: 0.1 mΩ to 100 Ω
Accuracy: 0.01%
Frequency: Range :20 Hz to 1 MHz
Accuracy: 0.01%