HOBO Temperature/Relative Humidity Data Logger

Part # H14-001
This product is discontinued.

Upgrade to U14-001


The HOBO 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 temperature/relative humidity conditions are critical. Data is offloaded via cable to a PC. An alarm display and built-in relay for use with Onset's Remote Alarm and/or Autodialer accessories assure timely notification of alarm conditions.

Highlighted Features

  • 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 or external Temperature or Temperature/Relative Humidity sensors
  • Optional Remote Alarm and Autodialer
  • Optional protective case for wet or condensing environments

In what environment does this data logger operate?

This data logger operates in an indoor environment.

What measurements does this data logger support?

The H14-001 data logger supports the following measurements: Relative Humidity and 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.

• Operating temperature range -20°C to +50°C, (-4°F to +122°F)
• Operating relative humidity range 0 to 95%, non-condensing
• Non-corrosive environment

Logger Capabilities
• Capacity: 65,136 measurements
• Software-selectable sampling intervals: 1 second up to 9 hours, recording times up to 1 year
• Programmable start time/date
• Recording modes: Stop when full, Wrap-around when full
• Nonvolatile EEPROM memory retains data even if batteries fail

• 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
• Displays battery level
• Displays flashing ALERT for out-of-limits conditions (selectable within host software)

• High and low set points for both temperature and relative humidity
• ALERT conditions reset on offload
• ALERT relay output selectable: Normally Closed or Normally Open
• Contact rating: 48VDC, 1A max
• Contact resistance: less than 1 Ohm
• Wire size range is 22AWG to 14AWG

Time Accuracy Plot Communications
• High Speed RS-232 serial offload
• Offloads to PC or Palm handheld with serial cable
• Offload speed 38.4Kbps. Readout full logger (64K) in less than 1 minute

• Time accuracy: ±1 minute per week at +20°C (+68°F), see
plot A

• 125 x 92 x 31 mm (4.9 x 3.6 x 1.2 inches)
• 170 g (6.0 oz) with batteries HOBO LCD Accuracy Resolution Plot

• 3 AAA Alkaline batteries, user-replaceable

Internal Temperature Sensor
• Measurement range: -20°C to +50°C (-4°F to +122°F)
• Accuracy: ±0.7°C at +20°C (±1.3°F at +68°F), see plot B
• Resolution: 0.4°C at +20°C (0.7°F at +68°F)
• Response time (to 90%): Less than 15 minutes in airflow of 1 m/s (2.2 mph)
• Temperature Accuracy Drift: Negligible

IntInternal Relative Humidity Sensorr Ploternal Relative Humidity Sensor
• User replaceable
• Measurement range: 15% to 95% at +25°C (+77°F)
• Accuracy: ±3% over range of 20% to 80%, see plot C
• Response time to 90%: <2 minutes in airflow of 1 m/s (2.2 mph)
• Accuracy Drift: <2% over 5 years typical

Documentation for the H14-001