Hobo MX2300 Series Manual

HOBO® MX2300 Series Data Logger Manual
HOBO MX2300 Series
Data Logger
Models:
• MX2301A, temp/RH
• MX2302A, ext temp/RH
• MX2303, 2 ext temp
• MX2304, ext temp
• MX2305, temp
Included Items:
• Screws
• Cable ties
Required Items:
• HOBOconnect app
• Mobile device with
Bluetooth and iOS,
iPadOS®, or Android™
Accessories:
• Solar radiation shield
(RS3-B for use with
MX2302A, MX2303, and
MX2304 models; RS1 or M-
RSA for use with MX2301A
and MX2305 models)
• Mounting bracket for solar
radiation shield (MX2300-
RS-BRACKET), for use with
MX2301A and MX2305
models
• Replacement battery
(HRB-2/3AA)
20923-L
The HOBO MX2300 series data loggers record and transmit temperature and/or relative
humidity (RH) in outdoor or indoor environments. These Bluetooth® Low Energy-enabled
loggers are designed for wireless communication with a mobile device. Using the
HOBOconnect™ app, you can easily configure the logger, read it out, and view data on your
phone or tablet, or export the data for further analysis. The logger can calculate minimum,
maximum, average, and standard deviation statistics and be configured to indicate alarms at
thresholds you specify. The logger also supports burst logging in which data is logged at a faster
interval when sensor readings are above or below certain limits. The Temp and Temp/RH
models have internal sensors while the External Temp/RH, External Temp, and 2x External
Temp include built-in external sensors, offering a wide range of solutions for monitoring
temperature and RH in numerous applications.

Specifications

Temperature Sensor
Range
Accuracy
Resolution
Drift
Relative Humidity Sensor* (MX2301A, MX2302A only)
Range
Accuracy
Resolution
Drift
Response Time (typical, to 90% of change)
Temperature
MX2301A
internal sensor
MX2302A
external sensor
MX2303/MX2304
external sensors
MX2305
internal sensor
RH
MX2301A
internal sensor
MX2302A
external sensor
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
±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
MX2301A and MX2302A: 0.02°C (0.036°F)
MX2303, MX2304, and MX2305: 0.04°C (0.072°F)
<0.01°C (0.018°F) per year
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%
±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
0.01%
<1% per year typical
Without Solar With RS1/M-RSA
Radiation Shield Solar Radiation Shield
17 minutes in air 24 minutes in air
moving 1 m/sec moving 1 m/sec
3 minutes, 45 seconds 7 minutes, 45
in air moving 1 m/sec seconds in air
moving 1 m/sec
3 minutes in air 7 minutes in air
moving 1 m/sec; 20 moving 1 m/sec
seconds in stirred
water
17 minutes in air 24 minutes in air
moving 1 m/sec moving 1 m/sec
Without Solar With RS1/M-RSA
Radiation Shield Solar Radiation Shield
30 seconds in air 40 seconds in air
moving 1 m/sec moving 1 m/sec
15 seconds in air 30 seconds in air
moving 1 m/sec moving 1 m/sec
With RS3-B Solar
Radiation Shield
NA
6 minutes, 30
seconds in air
moving 1 m/sec
4 minutes in air
moving 1 m/sec
NA
With RS3-B Solar
Radiation Shield
NA
30 seconds in air
moving 1 m/sec