The HOBO U14 LCD Temperature/Relative Humidity (RH) Data Logger displays and records temperature and humidity conditions. It is well-suited for use in manufacturing, processing, and storage environments where reliable monitoring and documentation of specific temp/RH conditions are critical. Data is offloaded via USB to a PC or Mac computer. An alarm display and built-in relay for use with Onset's Remote Alarm and/or Autodialer accessories assure timely notification of alarm conditions.

Features:

Faster USB data download time
Improved Temp/RH sensor resolution
Real-time display of Temperature and RH
Alarm display and output ensure timely notification of out-of-range conditions
Two models to choose from - internal Temp/RH or external Temp or Temp/RH
Optional Remote Alarm and Autodialer
Optional protective case for wet or condensing environments
 
Environment: Indoor
Measurement: Temperature,Relative Humidity

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: 0.2°C over 0° to 50°C (0.36°F over 32° to 122°F), see plot A
Resolution: 0.03% RH @ 25°C (77°F), see plot A
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)
±2.5% from 10% to 90% RH (typical), to a maximum of ±3.5%, see Plot B
Resolution: 0.03% RH @ 25°C (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.

Producing Area:USA