The HOBO U12 J, K, S, T Thermocouple data logger provides exceptional measurement flexibility by accepting J, K, S, or T thermocouple probes. An internal thermistor monitors and records ambient temperature for cold-junction compensation, for maximum accuracy.


High-accuracy J, K, S, T thermocouple recordings
Automatic cold-junction compensation
Accepts subminiature thermocouple connectors
Direct USB interface
Environment: Indoor
Measurement: Temperature


Measurement range:
J type: 0 to 750 °C (32° to 1382°F)
K type: 0 to 1250 °C (32° to 2282°F)
S type: -50 to 1760 °C (-58° to 3200°F)
T type: -200 to 100 °C (-328° to 212°F)
Internal temperature: 0° to 50°C (32° to 122°F)
J type: +/- 2.5°C or 0.5% of reading, whichever is greater
K type: +/- 4.0°C or 0.5% of reading, whichever is greater
S type: +/- 6.0°C or 0.5% of reading, whichever is greater
T type: ±1.5°C (±2.7°F)
Internal temperature: ± 0.35°C (± 0.63°F), see Plot A (All accuracies specified for battery voltage ≥ 2.80 V)
J type: 0.21°C at 375°C (0.38°F at 707°F)
K type: 0.32°C at 625°C (0.58°F at 1157°F)
S type: 0.44°C at 855°C (0.79°F at 1571°F)
T type: 0.10°C at -50°C (0.18°F at -58°F)
 Internal temperature: 0.03°C at 25°C (0.05°F at 77°F), see Plot A
Drift: Internal temperature 0.1°C/year (0.2°F/year)
Humidity range: 0 to 95% RH, non-condensing
Time accuracy: ± 1 minute per month at 25°C (77°F), see Plot B
Operating temperature:
Logging: 0° to 50°C (32° to 122°F)
Launch/readout: 0° to 50°C (32° to 122°F), per USB specification
Battery life: 1 year typical use
Memory: 64K bytes (43,000 12-bit measurements)
Weight 46 g (1.6 oz)
Dimensions 58 x 74 x 22 mm (2.3 x 2.9 x 0.9 inches)
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).

Producing Area:USA