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

 
 
 

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HOBO U14 data loggers display, record, and provide alarm notifications of temperature 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.

Environment:
The U14-001 Data Logger is for use in Indoorenvironments

Measurements:
The U14-001 Data Logger supports the following measurements:

Temperature • Relative Humidity

Features :

  • 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

Specifications :

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
  • Resolution: 0.03°C RH @ 25°C (0.05° at 77°F)
  • Response time to 90%: 2 minutes (to 90% in airflow of 1 m/sec)
  • Accuracy Drift: <2% over 5 years 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.