Oakton T-100IR User manual

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T-100IR Portable Turbidity Meter
Instruction Manual

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Table of Contents
1Introduction ...................................................................................................................................- 3 -
2Technical Specifications ..............................................................................................................- 4 -
3Instrumentation Illustration .........................................................................................................- 5 -
3.1 Summary.................................................................................................................................- 5 -
3.2 Configuration .........................................................................................................................- 5 -
3.3 Display Mode..........................................................................................................................- 6 -
3.4 Keypad....................................................................................................................................- 7 -
3.5 Battery Installment ................................................................................................................- 7 -
3.6 Data Storage, Recall, and Deletion......................................................................................- 7 -
4Calibration......................................................................................................................................- 8 -
4.1 Preparation for Calibration...................................................................................................- 8 -
4.2 Calibration Procedure (Take 0 NTU and 20 NTU as an example).....................................- 9 -
4.3 Notes for Calibration...........................................................................................................- 10 -
5Turbidity Measurement...............................................................................................................- 11 -
5.1 Sample Vial Handling ..........................................................................................................- 11 -
5.2 Preparation for Measurement.............................................................................................- 11 -
5.3 Normal Measurement..........................................................................................................- 11 -
5.4 Continuous Measurement ..................................................................................................- 11 -
5.5 Notes for Measurement.......................................................................................................- 12 -
6Parameter Setup..........................................................................................................................- 13 -
6.1 Operation..............................................................................................................................- 13 -
6.2 Parameter Setup Reference Table .....................................................................................- 13 -
6.3 Parameters Description ......................................................................................................- 13 -
7Data Output via USB Port...........................................................................................................- 14 -
8Lamp Replacement.....................................................................................................................- 16 -
9Warranty.......................................................................................................................................- 17 -

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1 INTRODUCTION
Thank you for purchasing the Oakton T-100IR Portable Turbidimeter (hereafter referred to
as the instrument). The instrument is designed using the principle of scattering and
conforms to the ISO 7027, (DIN EN 27027) methods for measuring the turbidity of aqueous
solutions and is suitable for use in laboratories or on site.
The instrument provides accurate results with the simple calibration and testing, giving you
unparalleled ease of use and accuracy.
⚫The instrument has intelligent functions such as automatic calibration, operation
navigation, parameter Setup, real-time clock display, calibration date check, automatic
power off, low voltage indication, and a replaceable tungsten light source.
⚫Large TFT color screen with blue background for measurement mode, green
background for calibration mode, and operation guides for easy calibration and
measurement, optional English & Spanish menu for convenient operation.
⚫500 sets of data storage with USB data output to PC.
⚫Normal and continuous two kinds of measurement mode. Continuous measurement
mode with the option to select the number of continuous measurements, automatically
generating average, maximum and minimum measured values in a data storage
interface, suitable for sample solutions with rapid settling and continuous measurement
changes.
⚫It meets IP67 water-resistant grade requirements and is suitable for field use.
⚫Product comes in a rugged carrying case, including calibration solutions, sample test
cuvettes, and more.

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2 TECHNICAL SPECIFICATIONS
Specification
Description
Measurement
Method
ISO 7027, (DIN EN 27027) compliant
Light Source
Infrared LED
Measuring Range
0 ~ 1000 NTU (FNU), automatic range switch
0.01~19.99 NTU(FNU)
20.0~99.9 NTU(FNU)
100~1000 NTU(FNU)
Accuracy
≤±2% of reading+ stray light
Repeatability
≤± 1% of reading or 0.02 NTU(FNU) (the greater of the two)
Resolution
0.01/0.1/1 NTU (FNU)
Stray Light
≤0.02 NTU (FNU)
Calibration
Standard
Distilled water or deionized water: 0 NTU (FNU)
Polymer or Formazin Solution：20, 100, 400 and 800NTU (FNU)
Detector
Silicon photovoltaic
Measuring Mode
Normal measurement and continuous measurement
Data Storage
500 groups
Data output
USB to PC
Calibration Record
Calibration date and time
Display
TFT color screen
Sample Vial
Φ25×60 mm，high borosilicate glass with cap
Vial Volume
18 ml
Working
Temperature: 0 to 50℃（32℉~122℉）；Relative humidity：
0~90% at 30℃, 0~80%at 40℃, 0~70% at 50℃, no condensation
Instrument sealing
grade
IP67
Certificates
ISO9001:2015 and CE
Warranty
2 years
Dimension and
Weight
Meter: (90×203×80) mm/385g
Carrying case: (310×295×110) mm/1.5kg

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3 INSTRUMENTATION ILLUSTRATION
3.1 Summary
3.2 Configuration
①
Flip cover of the sampling well (Close the cover
when measuring)
⑦
Dust proof plug (Remove for measurements)
②
Housing
⑧
Sample well
③
Display
⑨
Calibration vials or sample vials
④
Keypad
⑩
Positioning mark (Align the mark with the mark
on the calibration vial or the sample vial)
⑤
USB Port
⑪
Battery compartment
⑥
Lamp cover
①
0 NTU calibration vial （distilled water
self-prepared by users）
Calibration Solution：20, 100, 400, 800NTU
②
Carrying case
③
T-100 Turbidimeter
④
Microfiber cloth
⑤
AAAlkaline batteries×4
⑥
Silicone oil (10 ml)
⑦
Sample vials×6
⑧
Screwdriver (for opening battery cap)
⑨
User Manual
⑩
USB Cable & CD (under the meter)
Figure-1
Graph-2

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3.3 Display Mode
①Measurement Mode
②Measured parameter, units
③Operation Guide
④Low battery indicator
⑤Date and time
Measuring
Mode
①Calibration Mode - Green
②Measured parameter
③Progress bar
④Operation guide
①Calibration Mode
②Standard values
③Operation guide
④Finished calibration indicator
①Parameter Setup
②Menu
③Operation guide
①Data Recall Mode
②Data set numberings
③Saved measurements
④Operation guide
①
③
④
②
Calibration
Mode
Calibration
Menu
Parameter
Setup
Data
Recall

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3.4 Keypad
3.5 Battery Installment
a) Use the screwdriver to remove the four screws on the battery cover and open the battery cover.
b) Insert 4 pieces of AA alkaline battery. Please make sure the polarity is correct.
c) Put on the battery cover and screw tightly.
3.6 Data Save, Recall, and Deletion
3.6.1 Manual data saving and Automatic data saving
In parameter setup P4, users can select manual or automatic save mode. In the manual save mode,
after measurement is finished, press to save the data (measurement interface); In automatic data
save mode, the data (measurement interface) will be automatically saved after each measurement. The
instrument has two types of measurement mode: normal measurement (as in graph 4) and continuous
measurement (graph 5). in figure 4 means that 12 sets of data have been saved. The storage
Keypad
Functions
⚫Power on/off
⚫In measurement mode, press to enter or exit calibration mode
⚫In parameter setup and recall mode, press to return to measurement mode
⚫In measurement mode, short press to perform single measurement; long press
(>3s) to perform continuous measurement.
⚫In calibration mode, press to confirm calibration.
⚫In parameter setup mode, press to confirm change.
⚫In calibration mode, press to select which standard to calibrate.
⚫In parameter setup mode, press to scroll on the menu options.
⚫In recall mode, press to view different data
⚫Press to enter parameter setup mode
⚫Short press to save measured data; long press (>3s) to enter data recall mode
Figure -3

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number only indicates the number of measurement interfaces, which is not equal to the number of
actual stored data. For a single measurement, one serial number corresponds to one measurement
data. For continuous measurement, one serial number corresponds to multiple measurements in the
measurement interface. The data, as shown in Figure 5, has 10 measurements. Therefore, the
instrument can store 500 sets of data, but the storage number is often less than 500. If the stored value
is full and is pressed again or data is saved automatically, the icon will flash to remind
you that the storage is full, and you need to delete it before saving.
3.6.2 Data Recall
In measurement mode, long press (>3s), the instrument will display the saved data. As shown in
Figure 6, means there are 15 saved measurement interfaces and it’s currently showing the
9th one. Press or to check other data. Hold or to quickly check other data. Press
to return to measurement mode.
3.6.3 Data Deletion
Once the data storage is full, users need to delete the data in order to save new data. Select Yes in P5 in
parameter setup and press to confirm the deletion (will delete all the saved data).
4 CALIBRATION
4.1 Preparation for Calibration
a) The instrument has 5 calibration points: 0 NTU, 20 NTU, 100 NTU, 400 NTU and 800 NTU, of
which 0 NTU uses laboratory distilled or deionized water (high quality distilled water can also be
used), and the remaining 4 calibration points are configured use high molecule polymer
standard solution that come with the instrument.
b) Add distilled water to the cleaned 0 NTU calibration vial, then immediately screw the lid and let it
stand for at least 5 minutes. Note that after the bottled distilled water is used, quickly tighten the
bottle cap to prevent contact with air. The distilled water after opening the bottle can only be
used on the same day. For high-precision calibration, the remaining water in the bottle should
not be used for calibration. Only the water from first pour is suitable for calibration.
c) The polymer standard calibration solution configured in this instrument has the same accuracy
as Formazin calibration solution, but other brands of polymer calibration solutions cannot be
used. Otherwise the calibration accuracy will be affected. Compared with the Formazin standard
solution, the polymer calibration solution has the advantages of non-toxicity, high precision, long
Figure 4
Figure 5
Figure 6

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shelf life and NIST traceability. The polymer calibration solution of the instrument configuration
has a service life of ≥12 months (calculated from the date of manufacture). When using the
product, please check the effective date on the bottom of the bottle.
d) The instrument has been calibrated at full range before leaving the factory. For subsequent use,
you can select 2 or more points as needed, if the measured value is between the two calibration
points.
e) For low turbidity measurements (measured values less than 5 NTU), calibrate the instrument
with 0 NTU (distilled water) and 20.0 NTU polymer solution before each use, then use 1#or 2#
vial for measurement.
f) For accurate measurements of samples with ultra-low turbidity (measured value less than 1
NTU), the same vial should be used for both calibration and measurement, i.e. Add distilled
water to 1#vial for calibration and add sample solution to 1#vial for measurement. This way, the
error caused by different vials can be eliminated.
g) For turbidity measurement greater than 5 NTU, it is recommended to calibrate once a week, or
to test a calibration solution close to the sample solution. If the error is large, the instrument
needs to be recalibrated. For turbidity measurements greater than 5 NTU, use the vials from 3#
to 6#.
h) Apply a small drop of silicone oil on the surface of the calibration vial and wipe it off with the
micro-fiber cloth to evenly distribute the silicone oil on the surface of the vial so as to cover
smudges or scratches on the surface of the vial, which helps light scattering. Note that the
silicone oil applied should not be too much and must be wiped clean with a lint-free cloth.
Otherwise, it will affect the measurement accuracy.
4.2 Calibration Procedure (Take 0 NTU and 20 NTU as an example)
a) Power on the instrument and let it warm up for 3 minutes.
b) Apply a little silicone oil to the calibration vial, wipe it with the micro-fiber
cloth, turn the vial upside down several times and let it stand for 2
minutes. For the distilled water calibration vial, users need to let it stand
for at least 5 minutes to eliminate micro bubbles in the solution.
c) Open the flip cover and place the 0 NTU (distilled water) calibration vial.
d) Align the cover with the arrow on the sample well (see Figure 7) and
close the flip.
e) Press to enter the calibration menu, the cursor is at 0 NTU (see Figure 8.1).
f) Press to start 0 NTU calibration. After calibration is done, the instrument will return to
the calibration menu (see Figure 8.2). The “OK” sign indicates that the 0 NTU has been
calibrated and prompt to calibrate 20 NTU.
g) (e) Place the 20 NTU calibration vial in the sample well, press to start 20 NTU
calibration. After calibration is done, the instrument will return to the calibration menu (see

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Figure 8.3). The screen indicates that the 20 NTU has been calibrated. Press to return to
measurement mode as shown in Figure 8.4. If you want to continue to calibrate 100 NTU, place
the 100 NTU calibration vial in the sample well and press to calibrate...., repeat the
steps until 800 NTU calibration is completed, press to return to measurement mode.
4.3 Notes for Calibration
a) Press or to select the calibration point, as shown in Figure 8.1.
b) When the calibration vial is moved into the sample well, it is recommended to wait for 1 minute
for calibration, as the solution will shake when the solution vial moves, which may result in
inaccurate calibration.
c) The calibration point can be tested after the calibration is completed. If the calibration point has
a large error, enter the calibration mode and repeat the calibration. For calibration point
accuracy, users can refer to the following standards:
d) If the wrong calibration standard is used, the measured value will be inaccurate. In this case, it
can be restored by recalibrating it with the correct calibration solution.
e) Place the instrument on a flat, level surface. Do not hold the instrument in your hand.
f) If using Formazin standard calibration, please note that the diluted Formazin standard is
unstable.
g) Please make sure to use the freshly made Formazin standard to ensure calibration accuracy.
Calibration point
Accuracy
0NTU
≤±0.05NTU
20 NTU
≤±0.2NTU
100NTU/400NTU/800NTU
≤±5NTU
Figure 8.2
Figure 8.1
Figure 8.3
Figure 8.4

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5 TURBIDITY MEASUREMENT
5.1 Sample Vial Handling
a) The instrument is equipped with 6 sample vials, the cap is marked with 1#to 6#, and the bottom
of the vial also has the same number. The number of the vial and the cap should be the same,
do not mix. pay attention that the 1#and 2#vials are only for low turbidity solution measurement.
b) The vial has been rigorously cleaned and sterilized for the first time. Follow the steps below to
perform a thorough cleaning for subsequent use.
⚫Clean the inside and outside of the sample well with detergent → rinse with distilled water
or deionized water multiple times → Rinse the vial twice with the sample solution → Pour
the sample solution into the vial → Tighten the cap.
5.2 Measurement Preparation
a) Collect the sample solution into a clean container and add the solution to the
4/5 of the vial (about 18ml), see Graph 9, screw the cap.
b) Before the measurement, users can slowly invert the sample vial a few times
and let it stand for 2 to 5 minutes to completely eliminate air bubbles.
c) Wipe the surface of the vial with a lint-free cloth to ensure it is dry, clean and
free of stains.
d) Apply a small drop of silicone oil to the surface of the vial and wipe it off with a lint-free cloth.
e) Place the instrument on a flat, level surface without holding the instrument.
f) Hold the cap, align the arrow on the cap and sample slot, and place the vial into the sample
well, then close the flip cover.
5.3 Normal Measurement
Press , the display shows the progress bar (see Figure 10), and the measured value will be
displayed in 5 seconds. To repeat the measurement, press again.
5.4 Continuous Measurement
Press and hold until the progress bar appears (see Figure 11.1), and enter the continuous
measurement mode and get a measuring value per minute. If the number of continuous measurements
has been selected 20 times in parameter setting P2, Figure 11.2 is the third measured value, Figure 11.3
is the display interface at the end of continuous measurement. The average, maximum and minimum
values are displayed, along with a list of 20 measured values. The continuous measurement mode can
be used to observe the stabilizing process of turbidity and can also be used for rapid settling solutions.
Graph 9
Figure 10

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5.5 Notes for Measurement
Turbidity measurement is related to many factors and is a complicated analytical measurement, which is
related to the design of the instrument as well as many other factors, such as stray light, air bubbles,
sample vials and operating techniques.
a) After the vial is moved into the sample cell, it is recommended to wait for 1 minute before calibration,
as the solution will have some shaking when the vial moves, which may result in inaccurate
measurements.
b) Sample Vial: Sample vial must be meticulously cleaned and free from smudges and scratches. Its
surface should be applied with some silicone oil to treat the outside with a lint-free cloth. This is to
mask minor imperfections and scratches that may contribute to stray light. Do not apply large
quantity of oil as this may collect dirt and dust and extra oil should be wiped off with the cloth. When
wiping, user should grip the cap to avoid leaving fingerprints on the surface of the vial.
c) Silicone Oil: The refractive index of silicone oil should be same with that of glass vial. It is
recommended to use only silicone oil supplied with the instrument.
d) Mixing and Degassing: Samples should not be violently shaken or vibrated. It is recommended
users gently shake the sample vial to make solution even. Air bubbles in solution will cause large
errors to turbidity measurement. Air bubbles must be eliminated before measuring. But mixing and
degassing simultaneously is a difficult process to handle, especially for solution with precipitates,
which requires some operating experience and experimental conditions.
e) Other Requirements
⚫On the premise of ensuring even samples, sample solution should be measured immediately to
prevent temperature changing and precipitates from affecting measuring values.
⚫Avoid the sample dilution for measurement as much as possible.
⚫Avoid operating under direct sunlight.
⚫Do not pour solution into the sample well. Sample vial must be used for measurement.
⚫Please do not try to wash the sample well as this may damage its optical structure.
Figure 11.3
Figure 11.2
Figure 11.1

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6 PARAMETER SETUP
6.1 Operation
Press to enter the parameter setup mode → press or to switch P1-P2-...P9 → press
to enter each parameter → press or to make changes → press to confirm →
press to return to measurement mode.
6.2 Parameter Setup Reference Table
6.3 Parameters Description
P1 ─calibration date and time: users can check the date and time of last calibration
P2 ─Continuous measurement: users can select the number of times for continuous measurements (5,
10, 15 or 20 times).
P3 ─Measurement Unit: users can select which unit to use: NTU or FTU
P4 ─Data save mode: users can select automatic save mode or manual data save mode (see section
3.6 for details)
P5 ─Delete saved data: select Yes to delete all the saved data
P6 ─Auto close timer: users can select in how much time the instrument will turn off automatically if
there is no operation, 10 minutes, 20 minutes, 30 minutes, or off; when selecting off, the instrument can
only be turned off by pressing the power button.
P7 ─select language: users can select English or Spanish as the system language.
P8 and P9 ─set up date and time: in set up process icon means press or to select to
position of date and time, icon means press or to change the digit of date and time.
Symbol
Parameter
Content
P1
Last calibration data and time
View
P2
Continuous measurements
5-10-15-20
P3
Measurement unit
NTU-FTU
P4
Data save mode
manual-automatic
P5
Delete saved data
No-Yes
P6
Auto-close timer
10-20-30-OFF
P7
Select language
English, Spanish
P8
Date setting
/
P9
Time setting
/

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7 DATA OUTPUT VIA USB PORT
7.1 Display Interface
①—Display area for storage value
To display measuring number, date, time, measurement method (normal measurement or continuous
measurement), measuring value and measurement unit. For continuous measurement, average,
maximum and minimum measured values will also be displayed.
②—Serial number, last calibration information and parameter setting information.
③—Key
Port number—Port number is the number for program to connect with computer. Each computer has a
different port number. The port number is COM3 (see figure 12).
Open/Close—Switch key, press "Open/Close" key to open or close the program. LCD will display
icon when the program is opened (see figure 13).
Refresh—Port reset key.
①
②
③
Figure 12

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SyncTime—Sync time key, press "SyncTime" key to sync computer time with instrument time.
Download—Download key, press "Download" key to send data from instrument memory to computer.
Clear—Clear key, press "Clear" key to delete data.
Export—Export key, press "Export" key to export the stored value to computer Microsoft Excel
document.
Exit—Exit key, press "Exit" key PC-Link program will quit computer interface.
7.2 Install Software
Insert PCLink CD into computer, open PCLink folder, there are PCLink program folder and driver
compressed file. Normally open PCLink program file to use it directly. If the instrument cannot connect
with computer, please install USB driver at first.
7.3 Select Port
Connect USB cable to instrument and computer, open PCLink program
and computer will display program interface. Click the arrow next to the
port number COM3, click the port number in the bottom then press
"Open" key. LCD will display icon (see figure 13). If port number
can`t be confirmed, please check it in "Device Manager" of computer.
7.4 Run Software
Press "Download" key, all data in instrument memory will be sent to computer. When the program is
running, all measurement information will be sent to computer via USB, it will not be stored in instrument.
In "Manual" mode, press key after measurement completed to save data in software interface; in
"Auto" mode, data will be automatically saved in software interface after each measurement completed.
7.5 Data Processing
Press "Export" key to export stored value to Microsoft Excel document. The stored value can be
analyzed, counted and printed.
Figure 13

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8 LAMP REPLACEMENT
8.1 Light source check
Observe the light source on the left of the sample cell as in Figure 13. Turn the instrument on, and
press . The light source will light up for 5 seconds. If it’s not lighting up or is flashing, please
replace the lamp.
8.2 Lamp Replacement- White Light Lamp Only
The tungsten filament lamp module (sold separately) is as in Figure 14. The lamp hole and socket are as
in Graph 15. Graph 16 shows you how to replace the lamp.
Unscrew the lamp
cover with a coin
Use a tweezer to
unplug the socket
Use a tweezer to
unscrew the lamp
cover
counterclockwise
Take out the old tungsten
filament lamp module
Install the new tungsten
filament lamp module.
Close the lamp cover
and screw tight with a
tweezer.
Plug in the socket
Screw on the lamp
cover tightly
Figure 14
Tungsten filament lamp module
Figure 15
lamp hole and socket
socket
lamp cover
gasket
tungsten
filament light
Figure 13
Check light source
socket
lamp hole

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9 WARRANTY
9.1 We warrant this instrument to be free from defects in material and workmanship and
agree to repair or replace free of charge, at option of OAKTON INSTRUMENTS, any
malfunctioned or damaged product attributable to responsibility of OAKTON
INSTRUMENTS, for a period of TWO YEARS (SIX MONTHS for the standards) from the
delivery.
9.2 This limited warranty does not cover any damages due to:
Transportation, storage, improper use, failure to follow the product instructions or to
perform any preventive maintenance, modifications, combination or use with any
products, materials, processes, systems or other matter not provided or authorized in
writing by us, unauthorized repair, normal wear and tear, or external causes such as
accidents, abuse, or other actions or events beyond our reasonable control.
Oakton Turbidity
Oakton Replacement
Part Numbers
Oakton T100 WL turbidimeter kit
35635-10
Oakton T100 IR turbidimeter kit
35635-15
Calibration kit (20,100,400,800 NTU cuvettes)
35635-20
Replacement turbidimeter cuvettes (6x) (25 x 60 mm)
35635-25
Oakton Instruments
PO Box 5136
Vernon Hills, IL. 60061
Tel: [phone]
Email: [email protected]
Website: www.4oakton.com