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Sequoia Scientific

Hyper-a Hyperspectral absorption instrument

LISST-pH

Particle size and pH

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The LISST-pH is a LISST-200X with an integrated ANB OC300 pH sensor and analog converter. The pH measurement from the OC300 is integrated into the LISST-200X data stream.

The LISST-pH integrates Sequoia’s LISST-200X submersible particle size analyzer with a high-precision pH sensor. This combination of particle size, particle concentration, and pH measurement is uniquely suited for environmental monitoring, ocean alkalinity enhancement, aquaculture, acidification/alkalinization research, and more.

In this package, the LISST-200X powers and logs data directly from an external pH sensor, eliminating the need for additional data loggers. The pH data is fully integrated into the LISST-200X data files and real- time output. This enables simultaneous measurement of particle size, concentration, and pH, with all parameters organized in a single data file or data stream.

In addition to pH, up to two additional analog sensors can be powered and logged by the LISST-200X. This enables modular expansion of the LISST-pH to support specific applications or research needs. The LISST-pH is also compatible with many LISST-200X accessories, including battery packs, deployment frames, path length reduction modules, BioBlock and custom cabling.

Features

• Small angle forward scattering laser diffraction technology
• Measures particle size, concentration, beam attenuation, small-angle VSF, depth, temperature
• Self-contained with internal programmable datalogger for autonomous data collection
• Externally powered; short- and long-term deployment battery packs included
• USB connection to PC for programming, offloading and real-time size distribution displays
• Integrated depth and fast response temperature sensors
• Integrated pH sensor (ANB Sensors) logs measurements as analog voltages to the 200X data stream
• Integrate and power up to two additional analog sensors
• Analog output of mean particle size and total volume concentration for CTD integration
• Real-time output of complete Particle Size Distribution
• Wide range of accessories available

Specifications

pH Sensor Specifications (ANB Sensors)
• Calibration-free pH sensor
• pH range: 2 – 10
• Resolution: 0.01 pH
• Accuracy: +/- 0.1 pH (high salinity)
• +/- 0.2 pH (low salinity)
• Operational Salinity for pH: 0.05 – 40 ppt

  • 300 m depth rating (NOT 600 m as for the LISST-200X)

Technology
• Small-angle forward laser scattering
• 32-ring custom photodiode Ring Detector + 4 large angle
detectors
• 25 mm optical path
• 670 nm laser diode

Mechanical and Electrical
• Dimensions [Ø × L]: 10.03 cm × 63.9 cm (3.95” × 25.2”)
• Weight [air / water]: 5.4 kg / 1.7 kg (11.8 lbs / 3.8 lbs)
• Depth rating: 600 m
• External power input: 12 VDC nominal, 9 VDC to 24 VDC
• Current drain at 12 V: 75 mA Sampling
• Sampling rate: Up to 1 Hz
• Data storage: 1 GB (~12,000,000 measurements; ~140
days @ 1 Hz)
• SubConn MCBH3M, MCBH5M and MCBH6M connectors

Items

LISST-pH Item # and Description

A LISST-pH system is made up of a LISST-200X (SEQ-FP-L200X), pH sensor (SEQ-AC-L200X-PH) and pH sensor mounting clamps (SEQ-AC-L200X-PH-CLP). Order ALL items in qty 01 each for a fully integrated LISST-pH system.
Item #DescriptionThumbnail
SEQ-FP-L200XLISST-200X Sediment Size Distribution Sensor
1 um - 500 um size range
600 m depth rating
1 GB of memory
Integrated depth and temperature sensor

Includes:
Large and Small Submersible External Battery Housings with short cable
Charger and rechargeable batteries for Small Submersible External Battery Housing
2 m communications cable with built-in USB
Small Volume Test Chamber
Pelican shipping container with custom foam cushioning
Windows software for programming, data offload and data analysis.
SEQ-AC-L200X-PHANB OC300 pH sensor 2-10 pH 300 m depth rating with analog converter module for LISST-200X integration
SEQ-AC-L200X-PH-CLPpH sensor mounting clamps
SEQ-AC-L200X-EW1-YEAR EXTENSION OF LIMITED WARRANTY AND LIABILITY
Must be purchased together with new LISST-200X instrument.		No picture
SEQ-AC-L200X-SERV3-YEAR SERVICE PLAN
One-time service of instrument within 36 months after delivery.
Includes one-way return shipping from Sequoia, all evaluation, diagnosis, testing and calibration.
Parts and labor for repairs not included.
Must be purchased together with new instrument.
NOTE: End-user responsible for return shipment DDP to Sequoia.		No picture

LISST-200X/-Black/-HAB/-pH Accessories *NOT INCLUDED* with instruments

Item #DescriptionThumbnail
SEQ-AC-L200X-PRMOptical Path Reduction Module for LISST-200X
Extends concentration range by factor of five by reducing the optical path from 25mm to 5mm. Includes fused quartz cylinder and mounting hardware.
NOTE: The standard Background Test Chamber for LISST-200X will not work with the PRM in place. It is highly recommended to use the Large Volume Test Chamber for obtaining a background with the PRM installed.
SEQ-AC-L200X-CHLGLarge Volume Test Chamber for LISST-200X
Clear acrylic chamber with O-ring seal and drain. Used for obtaining clean water backgrounds with Path Reduction module installed.
SEQ-AC-L200X-SCOOPScoop for LISST-200X Optics
For applications in rivers and other regions where the LISST-200X is pointed into the flow. Ensures a diverted flow of water through the optical path of the LISST-200X. Includes s/s bolts and nuts.
SEQ-AC-L200X-FRMMounting Frame for LISST-200X & Small Battery
316 s/s frame. Includes:
bridle and set of two small battery housing clamps
SEQ-AC-L200X-FRM-CLPSmall Battery Housing Clamps (set of two clamps)
NOTE: Clamps are included with the LISST-200X frame.
SEQ-AC-L200X-SCBL-MMLISST-200X to SBE-9 CTD Cable
2 m cable with Impulse 6-pin MCIL-6-FS connectors on each end, wired pin to pin
Allows connection of LISST-200X to Sea Bird CTD with Impulse MCBH connectors.		No picture.
SEQ-AC-L200X-SCBL-AMLISST-200X to SBE-9 CTD cable
2 m cable with Impulse 6-pin MCIL-6-FS connector on one end, and Impulse AG206-FS connector on opposite end, wired pin to pin.
Allows connection of LISST-200X to Sea Bird CTD with AG connectors.
SEQ-AC-L200X-CHFPFull Path Flow Through Chamber for LISST-200X
Flow through chamber that allows pumped water to pass through the optics of the LISST-200X. Simple to install. Includes barb fittings for 1/2" ID tubing. Compatible with standard 1/2" NPT fittings.
SEQ-AC-L200X-BIOLISST-200X BioBlock mechanical anti-fouling wiper and shutter.
Includes mounting clamps (SEQ-AC-L200X-BIO-CLP).
NOTE: BioBlock depth rating is 200 m.
SEQ-AC-L200X-BIO-CLPLISST-200X BioBlock mounting clamps (included w/ LISST-200X BioBlock)
SEQ-AC-L200X-BC2LISST-200X 2-metre cable to small/large battery housing
SEQ-AC-L200X-BIO-WAL-200X BioBlock Copper Wiper AssemblyNo Picture
SEQ-RP-L200X-ESL-200X Replacement Endcap Switch Ass'yNo Picture.

LISST-200X/-Black/-HAB/-pH Accessories *INCLUDED* w/ instruments

For LISST-Black/-HAB/-pH sensor mount hardware, see under LISST-200X Upgrade Options.
Item #DescriptionThumbnail
SEQ-AC-L200X-LEBLarge External Battery Housing for LISST-200X
Anodized aluminum housing for external battery pack with underwater connectors for mating with LISST-200X. Includes 16 non-rechargeable alkaline D cells installed. Suitable for longer deployments. 600 m depth rating.
*Included as part of LISST-200X standard package.* Does not include cable SEQ-AC-L200X-BCS to connect to LISST-200X.
NOTE: Ships in a corrugated cardboard box.
The price does *NOT* include shipping container (e.g. SEQ-AC-L200X-SC).
SEQ-AC-L200X-SEBSmall External Battery Housing for LISST-200X
Plastic housing for external battery pack containing 2 rechargeable NiMH D cells with underwater connectors for mating with LISST-200X. Includes 4 rechargeable NiMH D cells and Battery Charger. 600 m depth rating.
*Included as part of LISST-200X standard package.* Does not include cable SEQ-AC-L200X-BCS to connect to LISST-200X
NOTE: Ships in a corrugated cardboard box.
The price does *NOT* include shipping container (e.g. SEQ-AC-L200X-SC).
SEQ-AC-L200X-SBATLISST-200X Rechargeable Batteries for Small Battery Pack
NiMH D cells, Qty. 4
*Included as part of LISST-200X standard package*
SEQ-AC-L200X-SCHGRLISST-200X Battery Charger for NiMH D Batteries
*Included as part of LISST-200X standard package*
SEQ-AC-L200X-BCSShort Cable for connecting Small or Large LISST-200X battery housing to LISST-200X
0.5 m long, 5-pin Male to 5-pin Female
*Included as part of LISST-200X standard package*
SEQ-AC-L200X-CHZSBackground Test Chamber for LISST-200X
Test chamber which holds small volume of water around optics while clean water background is obtained.
*Included as part of LISST-200X standard package*
SEQ-AC-L200X-CBL02Integrated Communication and External Power Cables for LISST-200X/-100X/-STX/-Deep
2 m length. Includes black-jacketed cable spliced to the single communications/power connector. Includes built-in USB adapter that allows the instruments to be powered from PC USB port.
*Included as part of LISST-200X standard package.*
SEQ-AC-HAB-CBL02Integrated Communication and External Power Cable for LISST-Black / - HAB. 2 m length. Includes black-jacketed cable spliced to the single communications/power connector. Includes built-in USB adapter, power jack and 15 V power supply.
*Included as part of LISST-Black / -HAB standard package.*
*NOT included w/ LISST-200X.*		Coming!
SEQ-AC-L200X-SCReplacement Shipping Case for LISST-200X
Plastic shipping case with custom cut foam for LISST-200X. Also has cut outs for small and large batteries, spare batteries, battery charger, and short cables.		Picture on the way!

LISST-200X Upgrade Options

Item #DescriptionThumbnail
SEQ-AC-L200X-UPGLISST-200X Upgrade to Support HAB & Black Sensor Suite - Electronics upgrade and testing of existing 200X to support external sensors (sensors and mounting hardware sold separately)No picture.
SEQ-AC-HAB-SNR-MNTBlack/HAB mounting and cable hardware (w/o sensors)
Mounting and cable hardware but no sensors (requires an upgraded LISST- 200X and the correct Turner Designs sensors).
SEQ-AC-BLACK-PKGLISST-Black Sensor Package
Black complete sensor package (includes mounting hardware/cables and Turner Designs sensors but not upgraded LISST-200X).
SEQ-AC-HAB-PKGLISST-HAB Sensor Package
HAB complete sensor package (includes mounting hardware/cables and Turner Designs sensors but not upgraded LISST-200X).
SEQ-AC-L200X-PHANB OC300 pH sensor 2-10 pH 300 m depth rating with analog converter module for LISST-200X integrationComing!
SEQ-AC-L200X-PH-CLPpH sensor mounting clampsComing!

FAQ