DirecTemp USB Thermometers

QTI’s stock of DirecTemp USB thermometer puts you in control of the temperature data you need. Customize these data loggers to your requirements by selecting from two interface options as well as multiple probe styles and cable configurations.

You can:

  • Choose from a range of tolerances up to +/- 0.05°C (0°C to 70°C)
  • Connect your DirecTemp using a plug-and-play or serial USB connection
  • Stream temperature data with easy-to-use software
  • Configure the software with custom alerts or export the data as an Excel file

For information on our DirecTemp USB Thermometers, see the following pages:

DirecTemp Probe Styles

Software & Drivers

Where to Buy

Frequently Asked Questions (FAQ)

Sensor Recalibration

Standard Calibrations and Ordering Options

QTI currently offers these calibrations and ordering options:

  • H = plug-and-play version +/- 0.5°C over the range of 0-70°C (compatible with QTI software ONLY)
  • C = plug-and-play calibrated version +/- 0.1°C over the range of 0-100°C (compatible with QTI software ONLY)
  • S = serial version +/- 0.5°C over the range of 0-70°C (compatible with custom user-developed software ONLY)
  • SC = serial calibrated version +/- 0.1°C over the range of 0-100°C (compatible with custom user-developed software ONLY)
  • N = NIST traceable version +/- 0.1°C over the range of 0-100°C (compatible with QTI software ONLY; additional calibration fee applies)
  • SN = Serial NIST traceable version +/- 0.1°C over the range of 0-100°C (compatible with custom user-developed software ONLY; additional calibration fee applies)

NOTE: Custom temperature calibrations are available upon request (order minimums apply).


To discuss how our DirecTemp USB thermometers can give you the temperature measurements you require,