HOBO® TidbiT® MX Temp 400 (MX2203) and
Temp 5000 (MX2204) Logger Manua
l
21537-N
HOBO TidbiT MX Temp loggers measure temperature in streams, lakes, oceans, coastal
habitats, and soil environments. Housed in a protective boot, these rugged loggers are
designed for extended deployments in fresh or salt water at depths up to 400 ft (MX2203) or
5,000 ft (MX2204). The loggers use Bluetooth® Low Energy (BLE) for wireless communication
with a phone, tablet, or computer, and are equipped with an optional water detection feature
that automatically turns Bluetooth advertising off when the logger is submerged in water,
preserving battery power. Using the HOBOconnect® app, you can easily configure the loggers,
download logged data to your mobile device or computer, or automatically upload the data to
HOBOlink® for further analysis. You can also configure the loggers to calculate statistics, set up
alarms to trip at specific thresholds, or enable burst logging in which data is logged at a faster
interval when sensor readings are above or below certain limits.
Specifications
Temperature Sensor
Range
MX2203: -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-4° to 122°F) in
water
MX2204: -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-4° to 122°F) in
water, maximum sustained temperature in water 30°C (86°F)
Accuracy
±0.25°C from -20° to 0°C (±.45°F from -4° to 32°F)
±0.2°C from 0° to 70°C (±0.36°F from 32° to 158°F)
Resolution
0.01°C (0.018°F)
Drift
<0.1°C (0.18°F) per year
Response Time
MX2203: 17 minutes typical to 90% in air moving 1 m/s, unmounted;
7 minutes typical to 90% in stirred water, unmounted
MX2204: 15 minutes typical to 90% in air moving 1 m/s, unmounted;
4 minutes typical to 90% in stirred water, unmounted
Logger
Logger Operating Range
-20° to 70°C (-4° to 158°F)
Buoyancy (Fresh Water)
MX2203: 3.1 g (0.11 oz) negative
MX2204: 7.6 g (0.27 oz) negative
Waterproof
MX2203: To 122 m (400 ft)
MX2204: To 1,524 m (5,000 ft)
Water Detection
Water conductivity level of 100 µS/cm or greater necessary for reliable
detection of water. Deionized water or water below 100 µS/cm may
not be detected.
The water conductivity circuit may not reliably detect water that has
frozen around the electrodes, i.e., below 0°C (32°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
Time Accuracy
±1 minute per month at 25°C (77°F)
Battery
CR2477 3V lithium, user replaceable in MX2203, non-replaceable in
MX2204
Battery Life
3 years, typical at 25°C (77°F) with logging interval of 1 minute and
Bluetooth Always Off disabled in software.
5 years, typical at 25°C (77°F) with logging interval of 1 minute and
Bluetooth Always Off or Bluetooth Off Water Detect enabled in the app.
Faster logging intervals and statistics sampling intervals, burst logging,
remaining connected with the app, excessive downloads, and paging
may affect battery life.
See
Battery Information
for detailed instructions on replacing the battery
in the MX2203 logger.
Memory
96,000 measurements
HOBO TidbiT MX Temp
Logger
Models:
•
MX Temp 400 (MX2203)
•
MX Temp 5000
(MX2204)
Items included:
•
Protective boot
Required Items:
•
HOBOconnect app
•
Mobile device with
Bluetooth and iOS,
iPadOS®, or Android™,
or a Windows computer
with a native BLE
adapter or supported
BLE dongle
Accessories:
•
Solar radiation shield
(RS1 or M-RSA) for
MX2203
•
Mounting bracket for
solar radiation shield
(MX2200-RS-BRACKET),
for use with MX2203
models
•
Replacement O-rings
(MX2203-ORING) for
MX2203
•
Replacement boots for
both models in gray
(BOOT-MX220x-GR),
black (BOOT-MX220x-
BK), or white (BOOT-
MX220x-WH)
MX2203 Model Shown
