The HOBO U30-NRC Weather Station is our most rugged data logging system that can be easily reconfigured and adapted to a wide variety of applications. Up to 15 channels of environmental data can be measured and recorded, and later analyzed with HOBOware® Pro software.
Key Features:

All electronics are housed within a rugged double-weatherproof, tamper-proof enclosure
Set up is quick and easy with plug-and-play sensors
Fast data offload via USB
Optional analog inputs with sensor excitation
Includes relay that can be activated on user-defined alarm conditions
Weather Measurements:  
Barometric Pressure
Leaf Wetness
Light Intensity
Pulse Input
Relative Humidity
Soil Moisture
Solar Radiation
Voltage Input
Wind Speed & Direction

Energy-HVAC Measurements:
AC Current
AC Voltage
Air Velocity
Carbon Dioxide
Compressed Air Flow
DC Current
DC Voltage
Differential Pressure
Gauge Pressure
Pulse Input
Relative Himidity
Volatile Organic Compound (VOC)
Water Flow


Normal operating range: -20°C to 40°C (-4°F to 104°F)
Extended operating range: -40 to 60°C (-40 to 140°F) - see "Rechargeable Battery service Life" for impact of operations in Extended Operating Range.
Sensor Inputs: 5 standard; option to expand to 10
Smart Sensor Compatibility: Compatible with most Onset smart sensors, except for the S-BPA, S-TMA and S-THA
Data Channels: Maximum of 15 (some sensors use more than one data channel)
Alarm Output Relay: Can be configured to be activated, deactivated or pulsed on user-defined sensor alarms. The relay can be configured as normally open or normally closed, and is rated for 30 V and 1 amp max.
Expansion Slot: One expansion slot is available for factory-installed expansion port.
Local Communication: Full Speed USB via USB mini-B connector
Size: 17.8 H x 11.7 D x 19.3 W cm (7.0 H x 4 .6 D x 7.6 W inches)
Weight: 2 kg (4 lbs 10 oz)
Materials: Outer Enclosure: ABS blend with stainless steel hinge pins and bronze inserts
Inner Enclosure: Polycarbonate with bronze inserts
U-Bolts: Steel with zinc dichromate finish
Gaskets: Silicone rubber
Cable entry channel: EPDM rubber
Cable entry bars: Aluminum with ABS plastic thumb screws
Data Storage Memory: Nonvolatile flash data storage, 512K bytes local storage
Memory Modes: Stop when full, wrap around when full
Operational Indicators: Up to six (depending upon options) status lights provide basic diagnostics
Logging Interval: 1 second to 18 hours, user-specified interval
Battery Type: 4 Volt, 4.5 AHr or 10 AHr, Rechargeable sealed lead-acid
Rechargeable Battery Service Life: Typical 3–5 years depending upon conditions of use. Operation within the extended operating range (but outside the normal range) will reduce battery service life.
Time Accuracy: 0 to 2 seconds for the first data point and ±5 seconds per week at 25°C (77°F)
Environmental Rating: Weatherproof enclosure, tested to NEMA 6. (Requires proper installation of cable channel system)
Mounting: 3.8 cm (1.5 inch) mast or wall mount
Enclosure Access: Hinged door secured by two latches with eyelets for securing with user-supplied padlocks
Sensor Network Cable Length: 100 m (328 ft) maximum
External Power: External power is required. The system optionally accepts the following Onset solar panels:
Alternatively it accepts an AC power adapter:
Optional Analog Sensor Port Specifications
Input Channels: Two, single-ended
Field Wiring: Two- or three-wire via screw terminals on detachable connector, 16–24 AWG.
Replacement detachable connectors: Part of spares kit, Part No. A-FS-CVIA-7P-1
Input Range: User-configurable: 0–20 mA DC, 0–20 VDC (suitable for 2.5, 5, 10V sensors)
Minimum / Maximum Input Voltage: 0 / 24 VDC
Minimum / Maximum Input Current: 0 / 24 mA DC
Minimum Current Source Impedance: > 20 KΩ
Accuracy: ± 0.25% of FSR from 50mV to FSV
ADC Resolution 12 bits
Excitation Power: Switched 12 VDC, up to 50 mA; user-selectable warm-up from 5msec to 2 minutes

Producing Area:USA