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Sequoia Scientific

Hyper-a Hyperspectral absorption instrument

LISST-Logger

Submersible 2,000 m rated datalogger

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The LISST-Logger is a fully submersible RS-232 datalogger rated to 2,000 m depth.

It is designed to work with Sequoia’s LISST-Tau and LISST-OST instruments. It logs RS-232 output from up to two connected LISST-Tau’s or LISST-OST’s. The LISST-Logger will also work with other RS-232 output sensors that send signals at once when powered up.

Software is included, but not needed for the LISST-Logger – one can simply connect to the sensor and program it via its terminal window.

ALL NEW LISST-Logger – ready for ordering since January 2026!

Features

Tested to work with:
LISST-Tau transmissometer
LISST-OST optical sediment trap
OC300 pH sensor from ANB

• 2,000-meter depth rating
• Real-time data logging
• Connects and logs one to six instruments at the same time
• Compatible with LISST-OST and LISST-Tau instruments
• Two RS-232 serial interfaces
• Four high-resolution analog input channels (16-bit ADC)
• Start stop digital signal (+5 – 12V)
• External digital trigger input
• Low-power sleep mode operation
• Integrated temperature and humidity sensor
• Externally powered (no internal battery for operation)
• Software included with instrument
• Accessory cable lengths available as desired
• Two programmable logging schedules

Specifications

  • Dimensions [Ø × L]: 5.08 cm x 19.7 cm (2.00″ x 7.77″)
  • Weight [air / seawater]: 0.61 kg / 0.26kg (1.34 lbs / 0.58 lbs)
  • Depth rating: 2,000 m
  • Housing material: Anodized aluminum (black) with sacrificial anode protection

 

  • External power input: 7–30 VDC
  • Power Output (per sensor): 12V@1A
  • Current Consumption: Operational 5mA@12V & Sleep 0.6mA@12V
  • Sampling rate: up to 1Hz
  • Data logging: Real-time, independent per channel
  • Storage: 1GB
  • Serial interfaces: 2 × RS-232
  • Analog inputs: 2 channels, 0–5 V, 16-bit resolution
  • Connectors: SubCon MCBH5M, 2x SubCon MCBH6F

Software & Downloads

  • LISST-Logger Product Brochure

    • Items

    LISST-Logger Item # and Description
    Item #DescriptionThumbnail
    SEQ-AC-LISST-DLLISST-Logger - 2,000 m rated data loggerImage coming!

    LISST-Logger Accessories *NOT INCLUDED* with LISST-Logger

    Item #DescriptionThumbnail

    LISST-Logger Accessories *INCLUDED* with LISST-Logger

    Item #DescriptionThumbnail

    FAQ

    What does the LISST-Logger log?

    The LISST-Logger logs RS-232 printed to the serial port of the connected instrument.

    Will the LISST-Logger work with my sensor?

    xx

    Does the LISST-Logger provide power to the sensors?

    No. You must provide an external power source, for example a submersible battery pack, that can power both the LISST-Logger and the connected sensors. Sequoia can provide these, ask us.

    The LISST-Logger has a small coin cell to keep the date and time on its internal processor, but the coin cell cannot power anything else.

    What Sequoia instruments require a datalogger?

    The LISST-Tau and the LISST-OST require an external datalogger. All other LISST and Hyper instruments from Sequoia have their own internal datalogger and do not require an external datalogger.

    Note that the discontinued LISST-ABS and LISST-AOBS from Sequoia also require an external datalogger – if you need a submersible datalogger for your LISST-ABS or LISST-AOBS the LISST-Logger will work with both of these instruments too.