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Micro Store -> Inspection Tools & Equipment -> Dataloggers -> Extech Humidity/Temperature Chart Recorder

Extech Humidity/Temperature Chart Recorder

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The Extech humidity and temperature chart recorder is the best value paperless chart recorder in the market! Easy to set up and operate.


  • Simultaneous numerical and graphical display of Humidity and Temperature readings, plus Time and Date
  • Measures Humidity (10 to 95%RH) and Temperature (-20.0°F to 140.0°F) plus calculates Dew Point
  • Basic accuracy 3%RH, 1.8°F/1°C
  • Large dual graphical LCD displays with adjustable vertical and horizontal TAC resolution
  • Internal memory records up to 49,000 data points and can be transferred to a PC via RS-232 serial port for further data analysis
  • LCD indicates percentage of memory remaining
  • Replaceable probe does not require recalibration
  • Detachable probe extends 3 ft
  • Audible and visual alarm with Hi/Low setpoints
  • Output socket used with optional external alarm module
  • Scroll the cursor to display selected data recorded
  • Complete with built-in stand, sensor with 3 ft cable, Lab View-based PC software, RS-232 cable, 110V-220VAC adapter and 3 AA batteries


  • Monitor and record laboratory or clean room temperature and humidity history
  • Record process conditions
  • Generate warning when conditions are outside required limits
  • Monitor controlled environment areas such as freezers, storage areas and other critical areas
  • Store humidity and temperature historical data for report generation

Available Options/Accessories

USB100 RS-232 to USB Adaptor $39.99 Add To Cart
RH520A Humidity/Temperature Chart Recorder $269.99
Members: $261.90
Add To Cart
RH520-220 Humidity/Temperature Chart Recorder w/220V adaptor $269.99
Members: $261.90
Add To Cart
RH520-240 Humidity/Temperature Chart Recorderw/240V adaptor $269.99
Members: $261.90
Add To Cart
RH520A-NIST Humidity/Temperature Chart Recorder w/240V adaptor - NIST $374.99
Members: $363.75
Add To Cart
RH522 Humidity/Temperature Probe for RH520 $69.99
Members: $67.90
Add To Cart

Download Catalog

Looking for more products from Extech? We carry many more products than we are able to list on our website. Click here to download the full Extech catalog. Then contact us to place your order!