HOBO U30 USB Weather Station

Specifications

Station

Normal Operating Range: -20 to 40°C (-4 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.
Smart Sensor Connectors: 10
Smart Sensor compatibility: Compatible with most Onset smart sensors, except for the S-BPA, S-TMA and S-THA
Smart Sensor Data Channels: Maximum of 15 (some sensors use more than one data channel; see sensor manual for details)
Alarm Output Relay: One relay contact closure can be configured as normally open, normally closed, or pulsed. Voltage: 30 V Current: 1 amp max.
Smart Sensor Network Cable Length: 100 m maximum (328 ft maximum)
Logging Interval: 1 second to 18 hours
Start Modes: Immediate, at interval, push button, or delayed start
Memory Modes: Stop when full or wrap when full
Memory: 512 KB nonvolatile flash data storage
Operational Indicators: Three status lights provide basic diagnostics
Time Accuracy: 0 to 2 seconds for the first data point and ±5 seconds per week at 25°C (77°F)
Battery Type/Power Source: 4 Volt, 10 AHr, rechargeable sealed lead-acid; external power required using one of these options: AC power adapter (AC-U30) or solar panel (SOLAR-xW)
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.
Communication Type: Full speed USB via USB mini-B connector
Full Memory Download Time: 4 minutes
Enclosure Access: Hinged door secured by two latches with eyelets for securing with user-supplied padlocks
Materials: Outer enclosure: Polycarbonate/PBT blend with stainless steel hinge pins and brass inserts
Inner enclosure: Polycarbonate with brass inserts
U-Bolts: Steel with zinc dichromate finish
Gaskets: Silicone rubber
Cable entry channel: EPDM rubber
Cable entry bars: Aluminum, metal thumbscrews with plastic heads
Dimensions: 18.9 H x 11.8 D x 18.1 W cm
Weight: 2.2 kg (4 lbs 13 oz)
Mounting: 3.8 cm mast or wall mount (1.5 inch mast or wall mount)
Environmental Rating: Weatherproof enclosure, tested to NEMA 6 (Requires proper installation of cable channel system)

Analog Sensor Port

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, 0–2.5 VDC, 0–5 VDC, 0–10 VDC, and 0–20 VDC (the voltage range is determined based on the raw values entered for the voltage scaling in HOBOware)
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