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NexSens SDL500 Nedsenkbar-datalogger

NexSens SDL500 er en nedsenkbar datalogger som brukes for bøyebasert fjerndatalogging eller i situasjoner der oversvømmelser kan forekomme.

  • Fem vanntette sensorporter for tilkobling til sensorer med industrielle digitale og analoge utganger
  • Direkte nedlastning av data eller mulighet for kommunikasjon gjennom mobilnett, radio eller iridium-satellitt telemetri
  • Drevet av (8) D-celle alkaliske batterier eller 5-watts solcellepakke


The SDL500 Submersible Data Logger is a rugged, self-powered remote data logging system for deploying environmental sensors in streams, rivers, wetlands, coastal waters, sewers, and culverts without fear of accidental flooding. The system is configured with five sensor ports for connection to industry-standard digital and analog interfaces including RS-485, SDI-12, 1-wire temp string, 0-2,5 VDC, pulse count, and more. Each sensor port offers a UW receptacle with double O-ring seal for a reliable waterproof connection. Unlike many data loggers, the SDL500 is truly submersible. The housing and battery compartment are completely sealed and waterproof.

When it comes to field ruggedness, the NexSens SDL500 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 SDL500 withstands extreme wave action, drops, floods, periodic & long-term deployment underwater, and more. When fitted for wireless remote communication, the radio, cellular, and satellite antennas are also waterproof.

The SDL500 can be powered autonomously by eight D-cell alkaline batteries. Optional solar power kits provide long-term continuous operation and solar charging. The data logger incorporates the same analog and digital interfaces as the popular NexSens iSIC data loggers. Common sensor connections include multi-parameter sondes, water quality sensors, temperature strings, Doppler velocity meters, water level sensors, rain gauges, and weather stations. User-supplied sensor cable assemblies can also be connectorized and tested at the factory for SDL500 integration. With this sensor interface versatility, the measurement possibilities are endless.

  • Analog Inputs: (2) differential or (4) single-ended, 0-2,5 V auto range, 12-bit resolution
  • Analog Outputs: (1) 12-bit channel, 0-2,5 V programmable
  • Power Outputs: (1) 12 V 250 mA configurable switch, (1) 5 V 100 mA analog excitation voltage, (1) 12 V output, fused from battery
  • Pulse Counters: (1) tipping bucket counter, max rate: 12 Hz
  • Digital I/O Ports: (1) standard generic I/O port
  • 1-Wire Interface: (1) 1-wire temperature sensor port
  • SDI-12 Interface: (1) SDI-12 port
  • RS-232 Interface: (2) RS-232 sensor ports
  • RS-485 Interface: (1) RS-485 port
  • Host Interface: (1) RS-232 or (1) RS-485 port configurable
  • Supported Serial Comm Protocol: NMEA 0183 or Modbus RTU
  • Internal Memory: 2 MB Flash memory, over 500.000 data points minimum
  • Power Requirements: 10,7 to 16 VDC
  • Typical Current Draw:
    • Data Logger: 2,5 mA sleep, 10 mA processing, 36 mA analog measurement
    • Cellular Modem: 350 mA receive/transmit typical, 104 mA idle
    • Radio Modem: 86 mA receive, 500 mA transmit, 21 mA idle,< 1 mA power off
    • Satellite Modem: 550-850 mA transmit, 80 mA standby, 30 uA sleep
  • Battery: (8) D-cell alkaline batteries, internal; optional 12VDC power
  • Maximum Depth: 60 m / 200 ft
  • Temperature Range: -20 to +70°C
  • Dimensions: 46,4 cm length x 14,0 cm diameter
  • Weight: 5,0 kg without batteries; 6,25 kg with batteries
  • Compatible sensor protocols: 4-20 mA, 0-2,5 V, SDI-12, RS-232, RS-485, Modbus RTU, NMEA 0183, 1-Wire temperature sensors, Thermistor sensors, Tipping bucket rain gauges
  • Cellular Protocol: GSM/GPRS, EDGE, CDMA
  • Radio Frequency Range: 902-928 MHz
  • Radio Communication Range: 20 miles line of sight, extended range with repeaters
  • Satellite Frequency Range: 1616-1626,5 MHz

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