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A weatherproof data logger with external temperature and relative humidity sensors. leveraging Bluetooth for easy setup and data download.
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The HOBO MX2302A is a weatherproof data logger with external temperature and relative humidity sensors. Leveraging Bluetooth Low Energy, the logger enables easy, fast set up and data download directly from your mobile device, and provides high-accuracy measurements in harsh outdoor environments.
Highlighted Features
In what environment does this data logger operate?
This data logger operates in an outdoor environment.
What measurements does this data logger support?
The MX2302A data logger supports the following measurements: Relative Humidity and Temperature
| Temperature Sensor | ||||
| Range: | MX2301A and MX2305 internal sensors: -40 to 70°C (-40 to 158°F) MX2302A external temperature sensor: -40 to 70°C (-40 to 158°F) MX2303 and MX2304 external sensors: -40 to 100°C (-40 to 212°F), with tip and cable immersion in fresh water up to 50°C (122°F) for one year |
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| Accuracy: | ±0.25°C from -40 to 0°C (±0.45 from -40 to 32°F) ±0.2°C from 0 to 70°C (±0.36 from 32 to 158°F) ±0.25°C from 70 to 100°C (±0.45 from 158 to 212°F), MX2303 and MX2304 only |
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| Resolution: | 0.04°C (0.072°F) | |||
| Drift: | < 0.01°C (0.018°F) per year | |||
| RH Sensor (MX2301A, MX2302A only) | ||||
| Range: | 0 to 100% RH, -40° to 70°C (-40° to 158°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% | |||
| Drift: | < 1% per year typical | |||
| Response Time: Temperature (typical, to 90% of change) | Without Solar Radiation Shield | With RS1/M-RSA Solar Radiation Shield | With RS3-B Solar Radiation Shield | |
| MX2301A internal sensor | 17 minutes in air moving 1 m/sec | 24 minutes in air moving 1 m/sec | N/A | |
| MX2302A external sensor | 2 minutes, 30 seconds in air moving 1 m/sec | 6 minutes in air moving 1 m/sec | 5 minutes in air moving 1 m/sec | |
| MX2303/MX2304 external sensors | 3 minutes in air moving 1 m/sec; 20 seconds in stirred water | 7 minutes in air moving 1 m/sec | 4 minutes in air moving 1 m/sec | |
| MX2305 internal sensor | 17 minutes in air moving 1 m/sec | 24 minutes in air moving 1 m/sec | N/A | |
| Response Time: Temperature (typical, to 90% of change) | Without Solar Radiation Shield | With RS1/M-RSA Solar Radiation Shield | With RS3-B Solar Radiation Shield | |
| MX2301A internal sensor | 1 minute in air moving 1 m/sec | 1 minute in air moving 1 m/sec | N/A | |
| MX2302A external sensor | 4 minutes in air moving 1 m/sec | 4 minutes in air moving 1 m/sec | 4 minutes in air moving 1 m/sec | |
| Logger | ||||
| Radio Power: | 1mW (0 dBm) | |||
| Transmission Range : | Approximately 30.5 m (100 ft) line-of-sight | |||
| Wireless Data Standard: | Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0) | |||
| Logger Operating Range : | 40° to 70°C (-40° to 158°F) | |||
| Logging Rate: | 1 second to 18 hours | |||
| Logging Modes: | 1Fixed 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 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 Power Saving Mode disabled; 5 years, typical with logging interval of 1 minute and Power Saving Mode enabled. Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life. |
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| Memory: | 128 KB (84,650 measurements, maximum) | |||
| Full Memory Download Time: | Approximately 60 seconds; 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.) External temperature sensor diameter: 0.53 cm (0.21 in.) External temperature/RH sensor diameter: 1.17 cm (0.46 in.) External sensor cable length: 2 m (6.56 ft) Solar radiation shield bracket: 10.8 x 8.3 cm (4.25 X 3.25 in.) |
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| Weight: | Logger: 75.5 g (2.66 oz) Solar radiation shield bracket: 20.4 g (0.72 oz) | |||
| Materials: | Acetal, silicone gasket, stainless steel screws | |||
| Environmental Rating: | NEMA 6 and IP67 | |||
| The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. | ||||
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