HOBO MX800 Series Water Data Loggers
Specification
MX801 and MX802
| Operating Range |
-40° to 50°C (-40° to 122°F), cannot be frozen in ice |
| Radio Power |
1 mW (0 dBm) |
| Transmission Range |
Approximately 30.5 m (100 ft) line-of-sight |
| Wireless Data Standard |
Bluetooth 5 |
| Number of sensors that can be connected |
2 |
| Maximum Cable Length |
120m (400 ft) |
| Logging Rate |
5 second to 18 hours |
| Logging Modes |
Fixed interval (normal or statistics), burst, or multiple intervals with up to 8 user-defined logging intervals and durations, with pause and repeat options |
| Start Modes |
Immediate, next interval or date & time |
| Stop Modes |
Memory full, never stop (overwrite oldest data), date & time, or after a set logging period |
| Water Detect |
Events are logged when logger is submerged or removed from the water (MX801 only) |
| Time Accuracy |
±1 minute per month 0° to 50°C (32° to 122°F) |
| Battery |
Four AA, 1.5 V lithium batteries, user replaceable |
| Battery Life |
With W-CTD or W-CT sensors: 2 years, typical with 1-minute logging interval or slower
With W-DO sensor: 1-year, typical with 5-minute logging interval or slowerFaster logging or statistics sampling intervals, entering burst logging mode, excessive readouts, and remaining connected with the app will impact battery life |
| Memory |
730,000 measurements, divided between channels (4 Mbyte memory) |
| Data Download Time (with Bluetooth 5+ devices) |
Full memory: Approximately 3.5 minutes
120,000 measurements: 1 minute
May take longer the farther the device is from the logger |
Barometric Pressure (MX802 only)
| Measurement & Calibrated Range |
66 to 107 kPa (9.6 to 15.5 psia), -20° to 50°C (-4° to 122°F) |
| Accuracy* |
Typical error: ±0.2 kPa (0.029 psi)
Maximum error: ±0.5 kPa (0.073 psi) |
| Resolution |
<0.01 kPa (0.0015 psi) |
| Pressure Response Time** |
<1 second to 90% at a stable temperature |
| Contribution to Water Level Accuracy*** |
Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water
Maximum error: ±0.15% FS, 0.6 cm (0.02 ft) water |
MX801 & MX802 Specs, continued
| Dimensions |
Logger diameter: 4.14 cm (1.63 inches)
Length without sensor: 20 cm (8 inches)
Length with W-CTD sensor: 36 cm (14 inches)
Length with W-CT sensor: 33 cm (13 inches)
Mounting loop: 12.7 x 22.6 mm (0.5 x 0.89 inches) |
| Weight |
MX801 Logger Head Only: 224 g (7.90 oz)
MX802 Logger Head Only: 226 g (7.97 oz) |
| Wetted Materials |
Logger: PVC housing with polyester film label, PET sensor connector end cap and mounting handle with EPDM and Buna-N O-rings, passivated 316 stainless steel hardware rated for use in saltwater; MX802 also has ePTFE vent
Collar: HDPE, titanium screwsNote: logger should be mounted so that no metal parts of the logger are in contact with other metals |
| Depth/Environmental Rating |
MX801: IP68; waterproof to 100m (with sensor(s) attached)
MX802: IP67, NEMA 6; Weatherproof (with cable or Termination Plug attached); this model is not waterproof |