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U14-001

Data Loggers

HOBO U14 LCD Logger - Temperature/Relative Humidity (RH) Data Logger - U14-001


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IMPORTANT: This HOBO data logger requires HOBOware software and a communications device. See compatible items below.

HOBO U14 data loggers display, record, and provide alarm notifications oftemperature and humidity conditions. Receive out-of-range alarms notifications with the optional Auto Dialer or Remote Audible Alarm. These loggers are well-suited for use in manufacturing, processing, and storage environments  where reliable monitoring and documentation of temperature and relative humidity conditions is critical.

  • Faster USB data download time

  • Improved Temperature/Relative Humidity sensor resolution

  • Real-time display of Temperature and Relative Humidity

  • Alarm display and output ensure timely notification of out-of-range conditions

  • Two models to choose from - internal Temperature/Relative Humidity external Temperature or Temperature/Relative Humidity

  • Optional Remote Alarm and Autodialer

  • Optional protective case for wet or condensing environments

  • Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis

Environmental

  • Operating temperature range -20°C to +50°C, (-4°F to +122°F) , 0 to 100% RH non-condensing

  • Operating relative humidity range 0 to 95%, non-condensing, noncorrosive environment


Logger Capabilities

  • Capacity:
    Temp and RH: 21,500 measurements
    Temp Only: 43,000 measurements

  • Software-selectable sampling intervals: 1 second up to 18 hours, recording times up to 1 year

  • Programmable start time/date

  • Recording modes: Stop when full

  • Launch Modes: Immediate, Delayed

  • Nonvolatile EEPROM memory retains data even if batteries fail


LCD

  • Size: 33 x 50.8 mm (1.3 x 2 inches)

  • Displays temperature and relative humidity simultaneously

  • Displays °C or °F (selectable within host software)

  • Displays memory remaining and battery level

  • Displays flashing ALERT for out-of-limits conditions (selectable within host software) and stops flashing on offload or return to normal range.


Alarms

  • High and low set points for both temperature and relative humidity

  • Selectable delays for each set point

  • Alert conditions reset on offload or return to normal range.

  • Selectable Contact Relay: Normally Closed or Normally Open

  • Contact rating: 48VDC, 1A max

  • Contact resistance: less than 1 Ohm

  • Wire size range is 22AWG to 14AWG

  • 0% Low Battery Range Communications

  • Offloads data to PC or U-Shuttle via USB cable

  • Readout full logger (64K) in less than 30 seconds


Timekeeping

  • Time accuracy: ±1 minute per month at 20°C (68°F).


Power

  • 3 AAA Alkaline batteries, user-replaceable


Size/Weight

  • 125 x 92 x 31 mm (4.9 x 3.6 x 1.2 inches)

  • 170 g (6.0 oz) with batteries


Internal 12-Bit Temperature Sensor

  • Measurement range: -20°C to 50°C (-4°F to 122°F)

  • Accuracy: ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F); ±0.13°C (0.24°F) typical

  • Resolution: 0.02°C @ 25°C (0.04°F @ 77°F)

  • Response time: 15 minutes (to 90% in airflow of 1 m/sec)

  • Temperature Accuracy Drift: Negligible


Internal 12-Bit Relative Humidity Sensor

  • User replaceable

  • Measurement range: 0-100% RH, -20 to 50°C (-4 to 122°F)

  • Accuracy: ±2.5% from 10% to 90% RH typical to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% and above 90% ±5% typical

  • Resolution: 0.05% RH

  • Response time to 90%: 2 minutes (to 90% in airflow of 1 m/sec)

  • Accuracy Drift: <1% per year typical

  • Hysteresis: 1% typical


External Sensors

  • For External Sensor Specifications, see the sensor's user manual.


Battery Life

  • The batteries will last one year in typical conditions (logging intervals of ≥ 1 minute with weekly offloads and average temperatures greater than 10°C or 50°F). Frequent offloads and/or extreme temperatures will reduce battery life.

  • At temperatures below freezing (0°C or 32°F), batteries will typically require replacement every six months. In these conditions the battery level bar graph should be checked regularly.


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