HOBO External Temperature/RH Sensor Data Logger

Overview

  • The HOBO MX2302 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. Remotely access your data in Onset’s cloud-based HOBOlink software with the new MX Gateway.
  • Part #

    MX2302A
  • Important Info

    The HOBO MX2300 data loggers requires the HOBOmobile App and a compatible mobile device. The MX2302 is designed for use with the RS3-B Solar Radiation Shield and is not compatible with the RS3 version.
  • The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available

    Temperature Sensor
    RangeMX2301A 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
    Resolution0.04°C (0.072°F)
    Drift<0.01°C (0.018°F) per year

     

    RH Sensor (MX2301A, MX2302A only)
    Range0 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
    Resolution0.01%
    Drift<1% per year typical
    Memory128 KB (63,488 measurements, maximum)

     

    Response Time: Temperature (typical, to 90% of change)Without Solar Radiation ShieldWith RS1/M-RSA Solar Radiation ShieldWith RS3-B Solar Radiation Shield
    External sensor3 minutes, 45 seconds in air moving 1 m/sec7 minutes, 45 seconds in air moving 1 m/sec6 minutes, 30 seconds in air moving 1 m/sec
    Response Time: RH (typical, to 90% of change)Without Solar Radiation ShieldWith RS1/M-RSA Solar Radiation ShieldWith RS3-B Solar Radiation Shield
    External sensor15 seconds in air moving 1 m/sec30 seconds in air moving 1 m/sec30 seconds in air moving 1 m/sec

     

    Logger
    Radio Power1 mW (0 dBm)
    Transmission RangeApproximately 30.5 m (100 ft) line-of-sight
    Wireless Data StandardBluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0)
    Logger Operating Range-40° to 70°C (-40° to 158°F)
    Logging Rate1 second to 18 hours
    Logging ModesFixed interval (normal, statistics) or burst
    Memory ModesWrap when full or stop when full
    Start ModesImmediate, push button, date & time, or next interval
    Stop ModesWhen 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 Type2/3 AA 3.6 Volt lithium, user replaceable
    Battery Life2 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.
    Memory128 KB (63,488 measurements, maximum)
    Full Memory Download TimeApproximately 60 seconds; may take longer the further the device is from the logger
    DimensionsLogger 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.)
    WeightLogger: 75.5 g (2.66 oz) Solar radiation shield bracket: 20.4 g (0.72 oz)
    MaterialsAcetal, silicone gasket, stainless steel screws
    Environmental RatingNEMA 6 and IP67
    CE CompliantThe 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.

The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available

Operating Range

MicroRX Station, battery-powered (RX2101) and Micro RX Water Level Station, battery-powered (RX2103): -40° to 60°C (-40° to 140°F)
MicroRX Station, solar-powered (RX2102), MicroRX Water Level Station, solar-powered (RX2104) and MicroRX Station for HOBOnet, solar-powered (RX2106): -20° to 60°C (-4° to 140°F)

Smart Sensor Connectors

5

Smart Sensor Network Cable Length

100 m (328 ft) maximum

Smart Sensor Data Channels

Maximum of 15 (some smart sensors use more than one data channel; see sensor manual for details)

Logging Rate

1 minute to 18 hours

Time Accuracy

±8 seconds per month in 0° to 40°C (32°F to 104°F) range;
±30 seconds per month in -40° to 60°C (-40° to 140°F) range

Battery Type/Power Source

RX2102, RX2104 and RX2106: Integrated 1.7 watt solar panel and NiMH rechargeable battery pack; optional AC power adapter (P-AC-1) or external solar panel (SOLAR-xW) can be used in place of integrated solar panel
RX2101 and RX2103: 6 AA 1.5 V lithium batteries or AC power adapter (P-AC-1)

Battery Life

RX2102, RX2104 and RX2106 Battery Life:

Typical 3–5 years when operated in the temperature range -20° to 40°C (-4° to 104°F); operation outside this range will reduce the battery service life.

Maximum connection rates with built-in solar panel, in full sun:

  • 10 minute connections year round for latitudes less than ±40°
  • 10 minute connections through three seasons in other regions, reduced to 30 minute connections in winter

Maximum connection rates with external 5W or 15W solar panels:

  • 10 minute connections year round, in full sun
  • Connection rate with external solar panels may be less if deployed in partial sun

Battery life without solar recharging, with hourly connections and
1 minute logging:

  • RX2102: 3 months
  • RX2104: 2 months
  • RX2106: 3 months

RX2101 and RX2103 Battery Life:

Battery life with daily connections:

  • RX2101: 1 year with 1 minute logging
  • RX2103: 1 year with 2 minute logging

Battery life with hourly connections and 1 minute logging:

  • RX2101: 3 months
  • RX2103: 2 months

Note: Deployments in areas with weak cellular strength could reduce battery life.

Memory

16 MB, 1 million measurements, continuous logging

Alarm Notification Latency

Logging interval plus 2–4 minutes, typical

Enclosure Access

Hinged door secured by two latches with eyelets for use with user-supplied padlocks

LCD

LCD is visible from 0° to 50°C (32° to 122°F); the LCD may react slowly or go blank in temperatures outside this range

Materials

Outer enclosure: Polycarbonate/PBT blend with brass inserts; Interior: Polycarbonate/PBT; Gasket: Silicone foam; Cable channel: Santoprene™ TPE; U-Bolts (not included): Steel with zinc dichromate finish

Dimensions

19.95 x 13.68 x 7.49 cm (7.85 x 5.39 x 2.95 in.)

Weight

678 g (23.9 oz)

Mounting

Optional U-bolts are compatible with masts up to 4.14 cm (1.63 in.) mast diameter; can also be mounted with zip ties or mounted to a flat surface with screws

Environmental Rating

Weatherproof enclosure, NEMA 4X and IP66 (requires proper installation of cable channel system)

Wireless Radio

GSM/GPRS/EDGE: Quad band 850/900/1800/1900 MHz
UMTS/HSPA+: Seven band 800/850/900/1800/1900/2100 MHz
LTE: Twelve Band 700/800/850/900/1800/1900/2100/2600 MHz

Antenna

4G LTE

ce

The CE Marking identifies this product as complying with all relevant directives in the European Union (EU)

FCC Logo Australia/New Zealand General Compliance mark 

FCC ID QIPPLS62-W, IC ID:7830A-PLS62W

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, Temperature and Dew Point