U12-012
HOBO Temperature/Relative Humidity/Light/External Data Logger
Discontinued
Important Information
Requires HOBOware software and a USB cable. (Note: A USB cable is included w/HOBOware Pro CD or USB software purchase). See compatible items below.
Compatible with
Overview
Measures temperature, relative humidity, light intensity, and more. With 12-bit resolution measurements, this logger collects a range of recorded data and stores 43,000 measurements.
Features
- 12-bit resolution provides high accuracy
- Large memory for long-term deployments or fast sampling
- Programmable and push button start
- Direct USB interface for fast data offload
- Compatible with Onset’s HOBO U-Shuttle for convenient data transport
- Compatible with HOBOware and HOBOware Pro for logger setup, graphing, and analysis
Specifications
Measurement Range
Temperature: -20° to 70°C (-4° to 158°F)
RH: 5% to 95% RH
Light intensity: 1 to 3000 footcandles (lumens/ft2) typical; maximum value varies from 1500 to 4500 footcandles (lumens/ft2)
Analog channels: 0 to 2.5 Vdc (w/CABLE-2.5-STEREO); 0 to 5 Vdc (w/CABLE-ADAP5); 0 to 10 Vdc (w/ CABLE-ADAP10); 4-20 mA (w/CABLE-4-20MA)
Accuracy
Temperature: ± 0.35°C from 0° to 50°C (± 0.63°F from 32° to 122°F), see Plot A in manual
RH: ± 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, see Plot B in manual
Light intensity: Designed for indoor measurement of relative light levels, see Plot D in manual for light wavelength response
External input channel (see sensor manual): ± 2 mV ± 2.5% of absolute reading
Resolution
Temperature: 0.03°C at 25°C (0.05°F at 77°F), see Plot A in manual
RH: 0.05% RH
Sample rate: 1 second to 18 hours, user selectable
Drift
Temperature: 0.1°C/year (0.2°F/year)
RH: <1% per year typical; RH hysteresis 1%
Response Time in Airflow of 1 m/s (2.2 mph)
Temperature: 6 minutes, typical to 90%
RH: 1 minute, typical to 90%
Time accuracy: ± 1 minute per month at 25°C (77°F), see Plot C in manual
Operating Temperature
Logging: -20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing)
Launch/readout: 0° to 50°C (32° to 122°F), per USB specification
Battery life: 1 year typical use
Memory: 64K bytes (43,000 12-bit measurements)
Weight: 46 g (1.6 oz)
Dimensions: 58 x 74 x 22 mm (2.3 x 2.9 x 0.9 inches)
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).
Compatible items
Compliance Certificates
NIST Setup & Certifications
Protective Enclosures
Communication Cables
Batteries
Graphing & Analysis
4-20 mA
AC Current
AC Voltage
Air Velocity
DC Amperage
DC Voltage
Differential Pressure
Gauge Pressure
Temperature
What's in the box
- HOBO U12-012 Temp/RH/Light External Data Logger
- Mounting kit: magnet, hook & loop tape, tie-wrap mount, tie wrap, and two screws
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