U12 Stainless High Temperature Logger

Onset's HOBO U12 Stainless Temperature Logger with Food Grade Housing and Extended Temperature Range of -40 to 125°C is ideal for food, pharmaceutical, autoclave, and other applications where high-accuracy temperature data is critical.

With its broad temperature range (-40 to 125°C) and food-grade stainless steel housing, the U12 Stainless Temperature Logger withstands process conditions from pasteurization to flash freezing and washdown. The Stainless Temperature Logger records up to 43,000 temperature measurements. The 5" probe model is ideal for monitoring internal temperatures of foods or any application where fast response is critical.


  • Extended temperature range: -40 to 125°C
  • Glass bead thermistor for highly stable readings
  • 5" probe model with 20-second response time
  • Rugged food-grade 316L stainless steel housing
  • Pressure housing for autoclaves and underwater to 2200 psi (1500 meters or 4900 feet)
  • Fits in standard beverage bottle necks
  • 43,000 temperature readings logged in non-volatile EEPROM memory
  • Data Shuttle for convenient in-field data readout and logger relaunch
  • Easy-to-use HOBOware (Windows or Mac) software for logger launch, data readout, and data plotting
  • Waterproof to 1500 m, 2200psi

Detailed Specifications

  • Accuracy: 0.22°C at 25°C
  • Resolution: 12-bit 0.02°C @ 25°C
  • Response time in water (typical to 90%)
    • Internal sensor: <3.5 minutes
    • 5" Probe: 20 seconds
  • Response time in air moving 1 m/sec (typical to 90%)
    • Internal sensor: <10 minutes
    • 5" probe: 2.25 minutes
  • 43,000 12-bit measurements
  • Vibration: Tested to NAVMAT P-9492*
  • Communications: Direct USB interface
  • Battery life: 3 years typical, factory replaceable**
  • NIST certification available from -30° to 120°C

About the manufacturer

Based on Cape Cod, Massachusetts, Onset has been designing and manufacturing its data loggers and monitoring solutions on site since the company's founding in 1981. Specialising in miniature, battery powered solutions, Onset data loggers are exceptional quality and value, ranging from indoor to outdoor and underwater applications. HOBO® data logger and weather station products are used around the world in a broad range of monitoring applications, from verifying the performance of green buildings and renewable energy systems to agricultural and coastal research.


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U12 stainless logger brochure

File Size 310KB   Filename onset_hobo_u12_stainless_temp_data_loggers.pdf   Download