NexSens X2-SDLMC Submersible Data Logger

The X2-SDLMC Submersible Data Logger is a rugged, self-powered remote data logging system specifically designed for offshore use without fear of accidental flooding.

Features

  • Wet-mateable sensor and power ports with integrated wireless communications
  • Optimized for use with CB-25 data buoy for monitoring water or atmospheric conditions
  • Withstands extreme wave action, floods, and periodic & long-term deployment underwater
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NexSens X2-SDLMC Submersible Data Logger

The X2-SDLMC Submersible Data Logger is a rugged, self-powered remote data logging system specifically designed for offshore use without fear of accidental flooding. The system is configured with two sensor ports for connection to industry-standard digital interfaces including RS-485, RS-232 and SDI-12. Additional sensor inputs are available through the use of port splitters and adapters. All connections are made using MCIL/MCBH wet-mate connectors, and the built-in sensor library automatically facilitates setup and configuration. Sensor data is recorded on common or independent schedules.

Unlike many data loggers, the X2-SDLMC is truly submersible. The housing and battery compartment are completely sealed and waterproof. Internal circuit boards and communication modules are shock mounted, and all access ports incorporate redundant sealing. The X2-SDLMC withstands extreme wave action, floods, periodic & long-term deployment underwater, and more. When fitted for wireless remote communication, the cellular and satellite antennas are also waterproof.

The X2-SDLMC can be powered by internal SLA battery or external 5-16 VDC power. The internal SLA battery is intended for use with the CB-25 data buoy for continuous power via solar charging. Common sensor connections include multi-parameter sondes, water quality sensors, temperature strings, Doppler velocity meters, water level sensors, and weather stations. Optional integrated cellular or satellite telemetry modules offer real-time remote communications via the WQData LIVE web datacenter. There, data is presented on a fully-featured and easy-to-use dashboard. Other features include automated reports, alarms, push notifications and much more.

Material: Housing: PVC; Connectors: Type 316 SS, neoprene; Pressure valve: Anodized aluminum
Weight: 5.0 lbs. without batteries; 8.3 lbs. with SLA battery pack
Dimensions: 5.5” (13.97 cm) diameter; 15.0” height (38.10 cm)
Internal Power: 6 A-Hr SLA battery, 12 VDC
External Power Requirements: 5-16 VDC ±5% (Reverse polarity protected)
Current Draw (Typical @ 12VDC): Low power sleep: 350uA; Active: 45mA; Cellular transmitting: 300mA; Iridium satellite transmitting: 170mA
Peak Current: Power supply must be able to sustain a 500mA 1-second peak current (@ 12V)
Operating Temperature: -20 to 70°C
Rating: 100m depth rating (standalone); 10m depth rating (with telemetry)
User Interface: RS-485 direct to CONNECT Software, WQDatalive Web Datacenter
Data Logging: 256MB microSD card (expandable up to 4GB)
Data Processing: Parameter level polynomial equation adjustment; Basic & burst averaging (min, max, standard deviation, and raw data available)
Real Time Clock (RTC): <30sec/month drift1; Auto-sync weekly2; Internal backup battery
Log Interval: User configurable from 1 minute (10 minute default)3; Unique interval per sensor
Transmission Trigger: Time-based; Selective parameter upload option
Sensor Interfaces: SDI-12, RS-232 (2 channels), RS-485
Sensor Power: (2) independent switches from input supply4,5
Built-in Sensors: Temperature (-40 to 85°C, 0.1°C resolution, ±3°C accuracy); Humidity (0-100%, 0.1% resolution, ±4% accuracy from 5-95% RH & -20 to 70°C); Battery voltage; System & sensor current
Sensor Ports: (2) MCBH-8-MP for sensor interface (RS-232, RS-485, SDI-12, Switched Power, GND)
Power Port: (1) MCBH-6-FS for power and communication (12V Solar In, Power Switch, RS-485 Host, GND)
Telemetry Options: 4G LTE cellular, CAT-M1 cellular, Iridium satellite
Antenna Port: Type N female

1Assumes 25ºC operating temperature
2Requires the X2-SDLMC to be connected to the internet
3Minimum log interval dependent on sensor limitations and processing time
4Cumulative concurrent current limit of all three channels is 2A
5Logger power supply must be able to support current requirements of sensors

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X2-SDLMC submersible data logger
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X2-SDLMC-C-NA4G
X2-SDLMC submersible data logger with North American 4G LTE cellular telemetry
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X2-SDLMC submersible data logger with CAT-M1/NB2 LTE cellular telemetry
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