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HOBOnet Temperature & Relative Humidity Sensor

Brand: Onset HOBO
Product Code: RXW-THC-868
HOBOnet Temperature & Relative Humidity Sensor
Ex VAT £286.54 Inc VAT £343.85

Availability: In stock

SKU: RXW-THC-868

Product Description

The HOBOnet Wireless Temperature and Relative Humidity (RH) Sensor provides a cost-effective and scalable solution for web-enabled monitoring of air temperature and humidity.


HOBOnet Wireless Sensors communicate data directly to the RX3000 weather station or pass data through other wireless sensors back to the central station. They are preconfigured and ready to deploy, and data is accessed through HOBOlink, Onset’s innovative cloud-based software platform.


Sensor Features



  • High accuracy: ± 0.2°C (± 0.36°F) and ± 2.5% RH 

  • Robust RH sensor withstands extended use in high-humidity environments


Wireless Features



  • 900 MHz wireless mesh self-healing technology

  • 450 to 600 meter (1,500 to 2,000 feet) wireless range and up to five hops

  • Up to 50 wireless sensors per RX3000

  • Simple button-push to join the HOBOnet wireless network

  • Onboard memory to ensure no data loss

  • Powered by rechargeable AA batteries and built-in solar panel


The RXW-THC-868 sensor supports the following measurements: Evapotranspiration, Relative Humidity and Temperature


Note: A complete HOBOnet system requires at least one HOBO RX3000 Remote Monitoring Station, a HOBOnet Wireless Manager, and a HOBOnet Wireless Sensor. HOBOnet Wireless Repeaters can be added to extend the range.




For full specifications for this product, please see the User Manual found under the Resources tab below.



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Availability: In stock

Additional Information

Additional Information

Country of Manufacture United States
Measurements Humidity, Temperature
Data Available By Wireless
Typical Applications Environmental (Outdoor), Field Research, Weather Monitoring
Explanation

Sensor

  Temperature RH

Measurement Range

-40°C to 75°C (-40°F to 167°F)

0–100% RH at -40° to 75°C (-40° to 167°F); exposure to conditions below -20°C (-4°F) or above 95%
RH may temporarily increase the maximum RH sensor error by an additional 1%

Accuracy

±0.25°C from -40° to 0°C (±0.45°F from -40° to 32°F)
±0.20°C from 0° to 70°C (±0.36°F from 32° to 158°F)
±0.25°C from 70° to 100°C (±0.45°F from 158° to 212°F)

±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

Resolution

0.02°C (0.036°F)

0.01% RH

Drift

<0.01°C (0.018°F) per year

<1% per year typical

Response Time

 

Without solar radiation shield: 2 minutes,
30 seconds in air moving 1 m/sec
With RS3-B solar radiation shield: 5 minutes in air moving 1 m/sec

5 minutes in air moving 1 m/sec with protective cap

 

 

Wireless Mote

Operating Temperature Range

-25° to 60°C (-13° to 140°F) with rechargeable batteries
-40 to 70°C (-40 to 158°F) with lithium batteries

Radio Power

12.6 mW (+11 dBm) non-adjustable

Transmission Range

Reliable connection to 457.2 m (1,500 ft) line of sight at 1.8 m (6 ft) high
Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high

Wireless Data Standard

IEEE 802.15.4

Radio Operating Frequencies

RXW-THC-900: 904–924 MHz
RXW-THC-868: 866.5 MHz
RXW-THC-922: 916–924 MHz

Modulation Employed

OQPSK (Offset Quadrature Phase Shift Keying)

Data Rate

Up to 250 kbps, non-adjustable

Duty Cycle

<1%

Maximum Number of Motes

50 motes per one RX Wireless Sensor Network

Battery Type/ Power Source

Two AA 1.2 V rechargeable NiMH batteries powered by built-in solar panel or two AA 1.5 V lithium batteries for operating conditions of -40 to 70°C (-40 to 158°F)

Battery Life

With NiMH batteries: Typical 3–5 years when operated in the temperature range -20° to 40°C (-4°F to 104°F) and positioned toward the sun (see Deployment and Mounting), operation outside this range will reduce the battery service life
With lithium batteries: 1 year, typical use

Memory

16 MB

Dimensions

Sensor: 5.1 x 33 mm (0.2 x 1.3 inches)
Cable length: 2 m (6.56 ft)
Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches)

Weight

Sensor and cable: 110 g (3.88 oz);
Mote: 223 g (7.87 oz)

Materials

Sensor: Polyamide
Mote: PCPBT, silicone rubber seal

Environmental Rating

Sensor: Weatherproof: 0 to 100% RH intermittent condensing environments. For best results, the sensor should be mounted inside a protective enclosure, such as a solar radiation shield. Mote: IP67, NEMA

Compliance

European Union Compliance     RXW-THC-868
Reviews
Resources

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