HOBO MX2309 Temp/RH/Solar Data Logger
Order Me In, once ordered this item will likely dispatch before the 05th of October 2025, call 1300 737 871 (NZ 0800 737 871) to confirm.
The MX2309 data logger that measures temperature, humidity, and solar radiation using the LI-COR 200R Pyranometer. It is a precise and reliable instrument made for research applications.
With Bluetooth, offload data directly to the free HOBOconnect app data offload even when it is left in remote spots, making it an ideal device for monitoring local environments.
$1,712.70 AUD Inc. GST
Note: The HOBO MX2300 data loggers require the HOBOconnect App and a compatible mobile device.
The HOBO MX2309 Temp/RH/Solar Data Logger delivers advanced, research-quality environmental monitoring in a versatile and robust platform. Engineered to measure temperature, relative humidity, and global solar radiation—with integrated LI-COR LI-200R pyranometer—it is ideally suited for demanding applications in agriculture, environmental research, ecology, and energy sectors. Precise and reliable, the MX2309 ensures that professionals have access to high-quality data for critical decision-making.
Comprehensive Environmental Sensing
The HOBO MX2309 incorporates high-accuracy sensors to deliver simultaneous measurements of temperature, relative humidity, and solar radiation. The LI-COR LI-200R pyranometer provides solar radiation data with a typical calibration uncertainty of ±3%, supporting accurate determination of metrics such as Accumulated Solar Radiation (MJ/m²), Daily Light Integral (DLI, MJ/m²/day), Vapor Pressure Deficit (VPD, kPa), and Dew Point.
Streamlined Bluetooth Data Management
Featuring integrated Bluetooth connectivity, the MX2309 enables seamless configuration and data download using the free HOBOconnect app on a mobile device. Wireless data offload is possible from distances up to 100 feet (30 meters), eliminating the need for direct cable connections and simplifying data access from remote or difficult-to-reach installations.
Durable, Field-Ready Construction
Designed for rigorous field use, the HOBO MX2309 is rugged and battery-powered, ensuring consistent performance across diverse environmental conditions. Its robust enclosure guards internal components against harsh elements, making it suitable for long-term monitoring in agriculture, forestry, energy, and other challenging settings.
Ease of Deployment and Operation
The logger’s compact design enables quick and flexible installation, whether in fixed or portable setups. With HOBOconnect, users can intuitively configure settings and manage data, reducing setup time and enhancing operational efficiency.
Applications
The HOBO MX2309 serves as a comprehensive solution for research and professional monitoring requirements, including microclimate assessment, crop management, ecological studies, and energy resource evaluation. Its research-grade precision and user-friendly features help optimise workflows and improve data-driven outcomes.
Specifications
Temperature Sensor:
- Range: -40 to 65 °C (-40 to 149 °F)
- Accuracy: ±0.2 °C (typical) within -40 to 65 °C
- Resolution: 0.008°C (.014 °F)
- Drift: <0.01°C (0.018°F) per year
Relative Humidity (RH) Sensors:
- Range: 0 to 100% RH, -40° to 65 °C (-40° to 149 °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: ±2.5% from 10% to 90% (typical) to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% RH and above 90% RH ±5% typical
- Resolution: 0.01% RH
- Drift: <1% per year typical
Global Solar Radiation Sensor:
- Range: 0 to ~1280 W/m² (full sunlight)
- Accuracy: ±3% typical, ± 5% maximum (LI-200R Absolute Calibration:)*
- Offset: ± 0.5 W/m²
- Resolution: 0.05 W/m²
- Spectral Range: 400–1100 nm
- Linearity: Maximum deviation of 1% up to 3,000 W m-2
- Stability: <= 2% change over one year
- Temperature Dependence: ±0.15% per ˚C maximum
- Cosine Correction: Cosine corrected up to 82˚ angle of incidence
- Azimuth: <±1% error over 360˚ at 45˚ elevation
- Tilt: No error induced from orientation
- Detector: High stability silicon photovoltaic detector (blue enhanced)
- Sensor Housing: Weatherproof anodized aluminum case with acrylic diffuser and stainless steel hardware. O-ring seal on the sensor base.
- Sensor Size: 2.36 cm diameter x 3.63 cm (095” x 1.43”)
- Cable Length: 1.8 m
Response Time (typical, to 90% of charge):
- Temperature: Without Solar Radiation Shield: 17 minutes in air moving 1 m/sec; With RS1 Solar Radiation Shield: 24 minutes in air moving 1 m/sec
- Relative Humidity (RH): Without Solar Radiation Shield: 30 seconds in air moving 1 m/sec; With RS1 Solar Radiation Shield: 40 seconds in air moving 1 m/sec
Logger:
- Operating Range: -40 to 65 °C (-40 to 149 °F)
- Radio Power: 0.4mW (-4 dBm)
- Transmission Range: Approximately 30.5 m (100 ft) line-of-sight
- Wireless Data Standard: Bluetooth Low Energy (Bluetooth Smart)
- Logging Rate: 1 second to 18 hours
- Logging Modes: Fixed interval (normal, statistics) or burst
- Memory Modes: Wrap when full or stop when full
- Start Modes: Immediate, push button, date & time, or next interval
- Stop Modes: When memory is full, push button, date & time, or after a set logging period
- Time Accuracy: ±1 minute per month 0° to 50°C (32° to 122°F)
- Battery Type: 2/3 AA 3.6 Volt lithium, user replaceable
- Battery Life: 2 years, typical with logging interval of 1 minute and Bluetooth Always On enabled; 5 years, typical with logging interval of 1 minute and Bluetooth Always On disabled. Faster logging intervals and statistics sampling intervals, burst logging, remaining c
- Memory: 195,000 measurements, maximum
- Full Memory Download Time: Approximately 4-5 minutes; may take longer the further the device is from the logger
- Dimensions: Logger housing: 10.8 x 5.08 x 2.24 cm (4.25 x 2.0 x 0.88 in.) / LI-190R: 2.36 cm diameter × 3.63 cm (0.93 × 1.43 in.)
- Weight (Logger): 149 g (5.26 oz)
- Materials: Acetal, silicone gasket, stainless steel screws
- Environmental Rating: NEMA 6 and IP67
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