Logger
Measurement Range
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-40° to 125°C
-40° to 257°F
Accuracy
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±0.25°C from 0° to 50°C , see manual for plot
±0.45°F from 32° to 122°F , see manual for plot
Resolution
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0.03°C at 25°C , see manual for plot
0.05°F at 77°F , see manual for plot
Drift
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0.09°F/year + 0.2°F/1000 hrs above 212°F
Response Time in 1 m/s (2.2 mph) airflow
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U12-015: <10 minutes, typical to 90%
U12-015-02: 2.25 minutes, typical to 90%
Response Time in Water
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U12-015: <3.5 minutes, typical to 90%
U12-015-02: 20 seconds, typical to 90%
Time Accuracy
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±2 minute per month at 25°C (77°F)
Operating Environment
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Air, water, steam, 0 to 100% RH
Operating Temperature
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Logging: -40° to 125°C (-40° to 257°F)
Launch/readout: 0° to 50°C (32° to 122°F), per USB specification
Battery Life
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3 year typical use, factory replaceable
Memory
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64K bytes (43,000 12-bit measurements)
Construction
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316 series stainless steel, EPDM or Viton O-ring; see Food-Grade Compliance section for additional details
Weight
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U12-015-02: 82 g (2.9 oz)
Logger Dimensions
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17.5 x 101.6 mm
0.69 x 4.00 inches
Probe Dimensions (U12-015-02 only)
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4 x 124 mm
0.16 x 4.90 inches
Pressure/Depth Rating
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2200 psi maximum
1500 m/4900 ft maximum
NIST Certificate
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