Ocean Insight LTMS User manual

LTMS
Liquid Transmission Measurement System
Installation and Operation Manual
For Products: LTMS

Table of Contents
Before You Get Started ............................................. iv
Warnings & Cautions................................................................................. iv
Warranty...................................................................................................... v
Certifications and Compliance.................................................................. v
Introduction............................................................... 1
Product Description ...................................................................................1
Operation .................................................................. 3
Installing the GUI ........................................................................................3
Calibration...................................................................................................4
Verify Calibration........................................................................................6
Make Sample Measurement .....................................................................7
Make Multiple Measurements...................................................................8
Cleaning the Flow-Cell............................................... 9
Tubing Replacement ...............................................10
Remove Tubing.........................................................................................11
Disassembling the Old Pump Tubing .....................................................13
Assembling the New Pump Tubing.........................................................14
Installing New Tubing ..............................................................................15
Flow-cell Changeover Procedure..............................21
Troubleshooting ......................................................23
Specifications..........................................................25
Copyright © 2020 Ocean Insight
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, by any means, electronic, mechanical, photocopying,
recording, or otherwise, without written permission from Ocean Insight.
This manual is sold as part of an order and subject to the condition that it shall not, by way of trade or otherwise, be lent, re-sold, hired out or otherwise circulated without
the prior consent of Ocean Insight, Inc. in any form of binding or cover other than that in which it is published.
Trademarks
All products and services herein are the trademarks, service marks, registered trademarks or registered service marks of their respective owners.
Limit of Liability
Every effort has been made to make this manual as complete and as accurate as possible, but no warranty or fitness is implied. The information provided is on an “as is”
basis. Ocean Insight shall have neither liability nor responsibility to any person or entity with respect to any loss or damages arising from the information contained in this
manual.

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Before You Get Started
Warnings & Cautions
Cautions
Caution: Never let the flow-cell sit empty, always keep it full of clean water when not in use. This is to reduce deposits from
building up on the flow-cell surface.
Caution: Never use with liquids warmer than 60°C.
Caution: Never operate the fluid handling system with the guards removed.
Caution: Never operate the fluid handling system with the hoses removed.
Caution: Do not immerse the device in any fluid, or place fluids on top. This may cause an electrical hazard. Do not use if
accidental wetting occurs.
Caution: Do not gas sterilize or autoclave this device.
Caution: Consult local codes and ordinances for proper disposal of equipment and other consumable goods.

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Warranty
For the most current warranty information, please visit OceanInsight.com.
Certifications and Compliance
ISO Certification
Ocean Insight, the industry leader in miniature photonics, has been certified for ISO 9001:2015 certification
applicable to the design and manufacture of electro-optical equipment.
The WEEE symbol on the product indicates that the product must not be disposed of with normal household
waste. Instead, such marked waste equipment must be disposed of by arranging to return to a designated
collection point for the recycling of waste electrical and electronic equipment. Separating and recycling this
waste equipment at the time of disposal will help to conserve natural resources and ensure that the
equipment is recycled in a manner that protects human health and the environment
WEEE Compliance

MNL-1017 Rev A 1
Introduction
Product Description
The LTMS system is a spectroscopy-based product for real-time, in-line monitoring of liquids including industrial dyes and plating
baths, ingredients in foods and beverages, chemical coatings for metals and other industrial liquid applications. The system
comprises a rugged transmission/absorption platform with a compact, rugged benchtop configuration suitable for harsh
environments. A built-in cuvette holder or flow-cell setup with automatic fluid handling are included.
The LTMS system will be custom configured for your facility and application. The instructions contained herein provide general
guidance for the use and maintenance of the system. The uniqueness and high degree of customization may require different or
additional steps that will be outlined during the installation and training received from Ocean Insight.
The LTMS software is designed for industrial settings and provides a simple client-server interface for operation over either ethernet
or serial communications (RS-232/RS-485). This interface is straightforward, human-readable, and may be customized for specific
applications. One or even multiple LTMS sensors can thus be controlled from a single automation platform, which can trigger
measurements and in turn receive either analyte concentration estimates or full spectral transmission/absorbance measurements.
The LTMS system uses long-lifetime LEDs for illumination. These LEDs do not need bulb replacements.
An image of the fully assembled LTMS System can be found in Figure 1.

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Peristaltic Pump
(Sample)
Peristaltic Pump
(Water)
Pinch Valve (Water)
Pinch Valve (Waste)
Pinch Valve (Sample)
Waste
Sample Inlet
Water Inlet
Flow-Cell
Ethernet
Serial
Wye fitting
4-Way fitting
Figure 1 The fully assembled LTMS System with parts labeled.

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Operation
This section will guide the user through the general operation of the LTMS. The system must be assembled, installed, powered up,
and connected to the software prior to operation. Ensure the proper installation of fluid handling lines installed in the appropriate
tanks: clean water and sample ensuring no leaks are visible. The workflow is as follows:
•Calibration
•Verification of the calibration
•Saving a master calibration
•Loading a concentration model
•Making a measurement
Installing the GUI
•Install MATLAB Runtime Engine on the user computer.
•https://www.mathworks.com/products/compiler/matlab-runtime.html
•1.7 GB file size
•Version R2018b (9.5)
•Install the Microsoft Visual C++ Redistributable on the user computer.
•VC_redist.x64.exe
•Copy the FDLTMSG2_Main.exe file to the user computer.
•Connect the computer to the LTMS system via Ethernet cable.
•Set the IP address for the ethernet port
•10.14.15.1

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Calibration
•Set the “Fluid Handling” toggle button to “On” if you want to use the fluid handling.
•Set the IP Address.
o10.14.15.x
oX is the serial number
•Press “Connect to LTMS.

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•When the system is connected, the “Connect to LTMS”button will be GREEN and the text will change to “Disconnect LTMS”.
•Let the system warm up for 45 minutes or more.
•Ensure the water inlet tube is installed in a vessel of clean water. The clean water should be as clean as possible, distilled or
RO water is preferred.
•If using the system fluid handling, press the “Sample to Water”Button.
oRepeat 3 times to ensure a clean flow-cell.
•If not using the system fluid handling, ensure there is clean water in the flow-cell or cuvette.
•Press “Calibrate”.

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Verify Calibration
•Press “Sample to Water”.
•Press “Measure”
•Verify that the temperature did
not change more than 0.2°C.
oCalibration and Current
temps should be within
0.2°C for each
spectrometer (S0 and Ref).
See arrows.
•Make sure transmission
measurement is between
99.5% and 100.5% at all
wavelengths
•If not, recalibrate and repeat.

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Make Sample Measurement
•Load Model
oEnable Concentration Mode by
toggling the switch above
“Conc. Mode” as seen in the
screenshot.
oLoad sample model file
•Setup Data Saving
oEnable saving data
oSelect directory for data files
•Run “Water to Sample”.
•Measure

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Make Multiple Measurements
•Enter the number of measurements you want to make in the “Reps” field.
•Enter the desired delay time, in seconds, between measurements.
•Check “Auto Fluid Handling” and the system will run the following sequence for each measurement.
o“Sample to Water” then “Calibrate”.
o“Water to Sample” then “Measure”.
•Press “Measure” to begin.

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Cleaning the Flow-Cell
A clean flow-cell is important for accurate measurements. Scale, debris, scratches, and other detritus can degrade the signal. If the
flow-cell is chipped, scratched, or the transparency is otherwise compromised it will need to be replaced. To prevent unnecessary
replacement, ensure your flow-cell is clean after use. After sampling, prior to filling with clean water, the flow-cell should be flushed
clean with a solution appropriate for the sample being measured. See below for recommended cleaning solutions.
Solvent
Material
Suggested Cleaning Methods
Aqueous
Protein, DNA, Biologics
Warm water with detergent, Dilute acid rinse, Copious water rinse
Aqueous
Salt solution Warm water
Acid rinse, copious water rinse
Aqueous
Basic solutions
Warm water with detergent, Dilute acid rinse, Copious water rinse
Organic
Oil based
Rinse with solvent, Warm water with detergent, Dilute acid rinse, Copious water rinse
Organic
Alcohol solutions
Rinse with solvent, Copious water rinse
Organic
Acidic solutions
Rinse with solvent, Copious water rinse
Organic
Basic solutions
Rinse with solvent, Dilute acid rinse, Copious water rinse
The use of RO, or distilled water, is highly recommended to prevent scale. After cleaning, the flow-cell should not be allowed to dry out
and should be stored filled with RO or distilled water.

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Tubing Replacement
Over time, the tubing used in the LTMS may become damaged and need to be replaced. Here are the instructions for maintenance
and tubing replacement.
•Required Tools
•Scissors or sharp cutters (something to cleanly cut the tubing)
•Required supplies
•Tubing
•Rubber grommet (Can be reused)
•Retention clip (Can be reused)
Tubing
Rubber Grommet
Retention Clip

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Remove Tubing
Prior to removing, or servicing, the tubing ensure that the fluid handling system is not running. Power to the fluid handling system
should be off or disconnected. All tubing in the LTMS system is replaceable. Prior to installing new tubing, remove all old tubing
except the flow-cell and tubing directly coupled to the flow-cell.
LTMS System
With all tubing removed, except flow-cell and tubing directly attached to the flow-cell, the LTMS system looks as below.

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Peristaltic Pumps
Remove the 3 thumb screws and the
plastic cover.
Unhook the tubing at the check valve
and the wye.
Remove the old tubing, grommet, and
clip.

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Disassembling the Old Pump Tubing
The retention clip and grommet can be reused. If you plan to use a new retention clip and grommet, skip to the Assembling the New
Tubing section below. To remove the retention clip and grommet for reuse:
•Open the retention clip by pressing the middle section towards the grommet until the clip opens.
•Remove the clip.
•Slide the grommet off the tubing.
•Discard the old tubing.

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Assembling the New Pump Tubing
•Cut a 27 cm piece to new tubing.
•Slide the rubber grommet onto the tube as shown below.
•Leave about 1.5 cm of tubing protruding.
•A drop of water can be used to aid in sliding the grommet on if necessary.
•Firmly install the retention clip.

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Installing New Tubing
Cut a 13.5 cm piece of tubing and install here.
Attach the bottom of the tubing to the 4-way
fitting at the bottom as shown.
Cut a 15.5 cm piece of tubing and install here.