HOBO J,K,S,T Thermocouple Data Logger

Part # U12-014
This product is discontinued.


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.

Highlighted Features

  • High-accuracy J, K, S, T thermocouple recordings
  • Automatic cold-junction compensation
  • Accepts subminiature thermocouple connectors
  • Direct USB interface

In what environment does this data logger operate?

This data logger operates in an indoor environment.

What measurements does this data logger support?

The U12-014 data logger supports the following measurement: Temperature

The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.

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)
U12-014 Plot A 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)
U12-014 Plot B 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); 0 to 95% RH (non-condensing)
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).