The X2-SDL Submersible Data Logger is a rugged, self-powered remote data logging system for deploying environmental sensors in lakes, streams, rivers, wetlands, coastal waters, sewers, and culverts without fear of accidental flooding. The system is configured with three 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 adapters. Each sensor port offers a UW receptacle with double O-ring seal for a reliable waterproof connection. Unlike many data loggers, the X2-SDL is truly submersible. The housing and battery compartment are completely sealed and waterproof.
When it comes to field ruggedness, the NexSens X2-SDL is in a class of its own. The housing is constructed of impact-resistant PVC and includes two elastomer bumpers for long-term deployment in close-fitting pipes and buoy ports. Internal circuit boards and communication modules are shock mounted and all access ports incorporate redundant sealing. The X2-SDL withstands extreme wave action, drops, floods, periodic & long-term deployment underwater, and more. When fitted for wireless remote communication, the cellular and Iridium satellite antennas are also waterproof.
The X2-SDL can be powered autonomously by sixteen D-cell alkaline batteries. Optional solar power kits provide long-term continuous operation and solar charging. Common sensor connections include multi-parameter sondes, water quality sensors, temperature strings, ADCP’s, 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: PVC body with Acetal battery lid
Weight: 12.0 lbs. without batteries; 16.6 lbs. with batteries
Dimensions: 5.5” (13.97 cm) diameter; 17.3” (43.94 cm) length (antenna length varies by model)
Internal Power: 16 user-replaceable D-cell alkaline batteries
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: -20C to 70°C
Rating: Submersible to 200 ft. (requires SDL-CAP on telemetry models)
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 (3 Channels), RS485
Sensor Power: (3) independent switches from input supply4,5
Built-in Sensors: Temperature (-40C to 85C, 0.1C resolution, ±0.3C accuracy); Humidity (0% to 100%, 0.1% resolution, ±4% accuracy from 5 to 95% RH & -20 to 70C); Battery voltage; System & sensor current
Sensor Ports: (3) 8-Pin for Sensor Interface (RS-232, RS-485, SDI-12, Switched Power, GND)
Power Port: (1) 6-Pin for Power and Communication (Primary/Backup Input, RS-485 Host, GND)
Telemetry Options: 4G LTE cellular, CAT-M1 cellular, Iridium satellite
Antenna Port: Type N female
Notes
1Assumes 25ºC operating temperature
2Requires the X2 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
