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