HOBO MX800 Series Water Data Loggers

Bluetooth Multiparameter Data Logger

Highly Versatile, Modular Wireless Multiparameter Loggers That Integrate Sensors (Purchased Separately) for Measuring Water Conductivity/Salinity, Depth, Temperature (CT/CTD), and Dissolved Oxygen.

HOBO MX800 Series multiparameter wireless data loggers work with interchangeable sensors to provide a highly configurable solution for monitoring water conductivity/salinity, temperature, depth, and dissolved oxygen. Available in both an easy-to-deploy, fully submersible model (MX801) and a direct read model (MX802) for convenient data offload that doesn’t require having to remove sensors from the water.

Features

• Compatible with interchangeable Conductivity, CTD (conductivity/temperature/depth), and DO sensors (sold separately) - swap out sensors for different applications
• Bluetooth, for easy logger configuration and data offload
• Easy to deploy, fully submersible (MX801)
• Direct read for convenient data offload (MX802)
• Logger diameter is less than 2 inches
• Faster data offload via Bluetooth 5.0
• Water detect feature indicates when logger was out of the water (MX801)
• Barometric pressure sensor included (MX802)
• Connect two sensors to one logger to get measurements like salinity adjusted DO directly, with no need for post-processing
• Guided calibration ensures accurate data
• User-replaceable batteries

• Specifications
• In the Box
• Required Items
• Optional Items
• Documents

• Specification	MX801	MX802
  Operating Range	-40° to 50°C (-40° to 122°F), cannot be frozen in ice	-40° to 50°C (-40° to 122°F), cannot be frozen in ice
  Transmission Range	Approximately 30.5 m (100 ft) line-of-sight	Approximately 30.5 m (100 ft) line-of-sight
  Wireless Data Standard	Bluetooth 5
  Maximum Cable Length	N/A	120m (400 ft)
  Logging Rate	5 second to 18 hours
  Water Detect	Events are logged when logger is submerged or removed from the water	N/A
  Time Accuracy	±1 minute per month 0° to 50°C (32° to 122°F)
  Barometric Pressure (Measurement & Calibrated Range)	N/A	66 to 107 kPa (9.6 to 15.5 psia), -20° to 50°C (-4° to 122°F)
  Barometric Pressure (Accuracy)	N/A	Typical error: ±0.2 kPa (0.029 psi); Maximum error: ±0.5 kPa (0.073 psi)
  Barometric Pressure (Resolution)	N/A	<0.01 kPa (0.0015 psi)
  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 slower.
  Memory	730,000 measurements, divided between channels (4 Mbyte memory)
  Materials	Outer enclosure: Polycarbonate/PBT blend with brass inserts; Interior: Polycarbonate/PBT; Gasket: Silicone foam. Cable channel: Santoprene™ TPE.
  Dimensions	Logger diameter: 4.14 cm (1.63 inches) Length without sensor: 20 cm (8 inches)
  Weight	213g (7.51 oz)	215g (7.58 oz)
  Environmental Rating	IP68; waterproof to 100m (with sensor(s) attached)	IP67, NEMA 6; Weatherproof (with cable or Termination Plug attached); not waterproof
  CE & UKCA Compliant	Yes

   

  Specification	Details 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 seconds 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 slower) Faster logging, burst mode, or excessive readouts will impact battery life
  Memory	730,000 measurements (4 Mbyte memory), divided between channels
  Data Download Time (with Bluetooth 5+ devices)	Full memory: Approximately 3.5 minutes 120,000 measurements: 1 minute May take longer if the device is farther from the logger

   

  Specification	Details Barometric Pressure (MX802 only)
  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

   

  Specification	Details MX801 and 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 screws Note: 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

• • HOBO MX801 o MX802 Data Logger
  • Acoplador
  • Llave Allen de 3/32”
• • None
• • Sensors
  • Accesories
  • Well Caps
  • Protective Enclosures
  • Communication Cables
• • MX800 Data Sheet
  • Quick Start Guide: MX801 Wireless Submersible Data Logger
  • Quick Start Guide: MX 802 Direct Read Data Logger
  • MX800 Series User Guide