HOBO™ MX801 Conductivity, Temperature and Water Level Data Logger
SKU
MX801-CTD
In stock
- Measures and Records Conductivity, Temperature and Water Level
- 0 to 100,000 µS/cm and -20°C to 50°C Measurement Ranges
- Fully Submersible and Retrieve for Data Offload Using HOBOconnect App
- Wireless Bluetooth Communications for Setup, Configuration and Data Offload
- Guided Calibration for Accurate Data and Water Detect Feature
- User-Replaceable Lithium Batteries
- Available in 4 Water Levels Depth (0 to 30ft, 0 to 100ft, 0 to 250ft and 0 to 13ft)
Includes W-CTD Conductivity, Temperature and Water Level Sensor
Overview of the HOBO™ MX801-CTD Conductivity Temperature and Water Level Data Logger
The MX801-CTD is an advanced, highly versatile, modular submersible data logger with an integrated Conductivity/Salinity and Water Level Sensor for measuring water temperature, conductivity and water level. MX801-CTD is available in 4 different water levels (0 to 30 ft, 0 to 100 ft, 0 to 250 ft and 0 to 13 ft). The MX801-CTD data logger is configured and offloaded wirelessly via a Bluetooth connection using the HOBOconnect mobile app.
The data logger is powered by four AA user replaceable batteries which provide anywhere from 1-2 years of logging depending on the sensors and configuration settings used. The internal memory can store a total of 730k readings providing long recording periods in between offloads.
Looking for a direct read version of this same device? Check out the MX802 here.
User Manuals and Product Guides
HOBO™ MX800 Submersible Water Data Logger Specifications
| Operating Range | -40°C to 50°C (-40°F to 122°F) |
| Wireless Communications | Radio Power:1.0 mW (0 dBm) Transmission Range: 30.5 Meters (100 ft) Line of Sight Wireless Data Standard: Bluetooth 5 |
| Number of Sensors that can be Connected | 2 |
| Maximum Cable Length | 120 Meters (400 feet) |
| Sampling Interval | 5 Seconds to 18 Hours |
| Recording Mode | 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 Data Logger is Submerged or Removed from the water |
| Time Accuracy | ±1 minute per month 0°C to 50°C (32°F to 122°F) |
| Power Source | (4) AA 1.5 Volts User Replaceable Lithium Batteries |
| 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 1-Minute Logging Interval or Slower Faster Logging or Statistics Sampling Intervals, Entering Burst Logging Mode, Excessive Readouts, and Remaining Connected with the App will Impact Battery Life |
| Data Storage Capacity | 730,000 Measurements, Divided Between Channels (4 Mbyte Memory) |
| Data Download Time | Full Memory: Approximately 3.5 Minutes 120,000 Measurements: 1 Minute May Take Longer the Further the Device is From the Data Logger |
| Wetted Materials | Data 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 Collar: HDPE, Titanium Screws Note: Data Logger Should be Mounted So That No Metal Parts of the Data Logger are in Contact with Other Metals |
| Standards Compliance | FCC (US), CE (EU), UKCA, Waterproof to 100 Meters with Sensors Attached (IP68) |
| Dimensions | Data Logger Diameter: 4.14 cm (1.63") Length without Sensor: 20 cm (8.0") Mounting Loop: 1.27 cm x 2.26 cm (0.5" x 0.89") |
HOBO™ W-CTD Conductivity Temperature and Depth Water Sensor Specifications
| Conductivity | Measurement Range (Electrical Conductivity and Specific Conductance): 0 to 100,000 µS/cm Measurement Range (Salinity using PSS-78): 2 to 42 PSU Measurement Range (Total Dissolved Solids): 0 to 100,000 mg/L Calibrated Range (Electrical Conductivity): 50 to 80,000 µS/cm @ 5°C to 35°C (41°F to 95°F) Accuracy (Conductivity): ±2% or 15 µS/cm Whichever is Greater Accuracy (Salinity): ±2% of Reading or 0.1 PSU, Whichever is Greater Resolution (Conductivity): 0.1 µS/cm from 0 to 1,000 µS/cm; 1 µS/cm from 1,000 to 10,000 µS/cm; 10 µS/cm from 10,000 to 100,000 µS/cm Resolution (Salinity): 0.01 PSU Resolution (Total Dissolved Solids): 0.1 mg/L Response Time: 1 second to 90% at a Stable Temperature |
| Absolute Pressure | Measurement Range: 0 to 207 kPa (0 to 30 psia) Factory Calibrated Range: 69 to 207 kPa (10 to 30 psia) @ 0°C to 40°C (32°F to 104°F) Burst Pressure: 310 kPa (45 psia) or 18 Meters (60 ft) Depth Raw Pressure Accuracy* : Maximum Error - ±0.3% FS, 0.62 kPa (0.09 psi) Pressure Response Time**: <1 Second to 90% at a Stable Temperature * Raw Pressure Accuracy: Absolute Pressure Sensor Accuracy includes All Sensor Drift, Temperature and Hysteresis-Induced Errors. ** Changes in Temperature: Allow 20 Minutes in Water to Achieve Full Temperature Compensation of the Pressure Sensor. There can be up to 0.5% of Additional Error due to Rapid Temperature Changes. |
| Water Level | Measurement Range: 0 to 4 Meters (0 to 13 ft); 0 to 9 Meters (0 to 30 ft); 0 to 30 Meters (0 to 100ft); 0 to 76 Meters (0 to 250ft) of Water Depth at Sea Level Accuracy*: Typical - ±0.05% FS, 0.5 cm (0.015 ft) Water; Maximum - ±0.1% FS, 1.0 cm (0.03 ft) Water Resolution: <0.02 kPa (0.003 psi), 0.21 cm (0.007 ft) Water * Water Level Accuracy: With Accurate Reference Water Level Measurement, Known Water Density, and a Stable Temperature Environment. System Water Level Accuracy Equals the Sum of the Barometric Water Level Accuracy Plus the Selected CTD Sensor Water Level Accuracy. |
| Temperature | Measurement Range: -20°C to 50°C (-40°F to 122°F), Non-Freezing Water Accuracy: ±0.15°C (±0.27°F) from 0°C to 50°C (32°F to 122°F) Resolution: 0.01°C at 25°C (0.018°F at 77°F) Response Time: 3 minutes to 90% in Water (Typical) Drift: <0.1°C (0.18°F) per Year |
| Wetted Materials | Passivated 316 Stainless Steel Housing Rated for Use in Saltwater, Viton and Buna-N O-Rings, PET Sensor Connector Depth Sensor: Ceramic Conductivity Sensor: PET, Platinum Plating on Electrodes Note: Sensor Should be Mounted so That it is Not in Contact with Other Metals |
| Standards Compliance | FCC (US), CE (EU), UKCA, Waterproof to Pressure Sensor Burst Pressure Rating, IP68 |
| Dimensions | 2.5 cm x 15 cm (1.0" x 6.0") |
Customer Questions