Onset HOBO MX2300 Temp/RH Loggers
Features
- Weatherproof housing for use in outdoor or condensing environments
- Small-diameter, external sensor versions for measurements in tight spaces
- Wireless setup & download with Bluetooth Low Energy (BLE)
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Onset HOBO MX2300 Series Temp/RH loggers allow users to set up and offload loggers wirelessly from any mobile device--eliminating the need to take a laptop or data shuttle into the field to retrieve data.
Models
The HOBO MX2300 Series offers five models covering a broad range of outdoor monitoring applications, from agricultural research to forest ecology studies. The series includes internal sensor models that are highly durable and easy to deploy, and external probe models that are well-suited for monitoring conditions in soils, water, walls, and more.
| 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 |
|||
| 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 |
|||
| Resolution | MX2301A and MX2302A: 0.02°C (0.036°F) MX2303, MX2304, and MX2305: 0.04°C (0.072°F) |
|||
| Drift | <0.01°C (0.018°F) per year | |||
| Relative Humidity 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 (typical, to 90% of change) | ||||
| Temperature | 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 | NA | |
| MX2302A external sensor |
3 minutes, 45 seconds in air moving 1 m/sec | 7 minutes, 45 seconds in air moving 1 m/sec | 6 minutes, 30 seconds 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 | NA | |
| RH | Without Solar Radiation Shield | With RS1/M-RSA Solar Radiation Shield | With RS3-B Solar Radiation Shield | |
| MX2301A internal sensor |
30 seconds in air moving 1 m/sec | 40 seconds in air moving 1 m/sec | NA | |
| MX2302A external sensor |
15 seconds in air moving 1 m/sec | 30 seconds in air moving 1 m/sec | 30 seconds in air moving 1 m/sec | |
| Logger | ||||
| Operating Range | -40° to 70°C (-40° to 158°F) | |||
| Radio Power | 1 mW (0 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 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 connected with the app, excessive downloads, and paging may impact battery life. | |||
| Memory | MX2301A and MX2302A: 128 KB (63,488 measurements, maximum) MX2303, MX2304, and MX2305: 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.) |
|||
| 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 | |||
- HOBO MX2305 Temp Data Logger
- Screws
- Cable ties
Select Options
In The News
Sustainable Fishing in Alaska: Protecting the Salmon Capital of the World through Research
In the far north, the Alaska Peninsula stretches away from the Last Frontier into the Pacific Ocean. A narrow strip of land dotted with freshwater lakes and intruded upon by ocean inlets–this unique region is intimately connected with the surrounding water. Nestled halfway down the peninsula's southern coast are the small villages of Chignik. The area has historically been home to the Aleut people and has been heavily reliant on fishing for centuries. Home to commercial and subsistence fishing today, Chignik continues to rely upon the salmon returns to the surrounding villages, which are supported by scientists working tirelessly to understand and steward these fish populations.
Read More
NexSens X3 Data Logger Review
Extreme environments meet extreme design with the NexSens X3 Data Logger . The new logger offers the latest in real-time monitoring technology with wireless communication, a large plug-and-play sensor library and ultra-low power consumption, all in a waterproof marine-grade housing. The X3 is built to handle harsh weather, floods, high winds and rough seas, and it stands alone; no additional protective housing needed. With an operating temperature that ranges from -40°C to 70°C, the logger can withstand arctic environments and extreme heat. A conformal coating on the internal circuit board isolates it from moisture and humidity.
Read More
Buoy-Based Solutions: Strengthening Kentucky’s Emergency Response Efforts
When Kentucky’s Emergency Response Team (ERT) has to act quickly in response to chemical and oil spills in the Commonwealth, they rely on small, easily deployable buoys to collect critical data that help minimize and evaluate damages in environmental emergencies. With a background in geology, Robert Blair primarily worked with groundwater and got involved sporadically with the ERT during groundwater contamination emergencies. Over time, this involvement led to him joining the ERT as an On-Scene Coordinator and then becoming the branch manager for the team and overall Emergency Response Branch .
Read More
