Apera Instruments TN480 User manual

TN480 Portable Turbidity Meter
Instruction Manual
APERA INSTRUMENTS, LLC
aperainst.com

Table of Content
1Overview.................................................................................................. - 1 -
2Technical specifications............................................................................... - 2 -
3Instrument description ................................................................................ - 3 -
3.1 Instrument Overview .............................................................................................................- 3 -
3.2 Configuration .........................................................................................................................- 4 -
3.3 Display Mode..........................................................................................................................- 4 -
3.4 Keypad....................................................................................................................................- 5 -
3.5 Power Supply .........................................................................................................................- 6 -
3.6 Data Log, Recall, and Deletion.............................................................................................- 6 -
3.7 Setting for first-time use.......................................................................................................- 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 Cuvette Handling ................................................................................................... - 11 -
5.2 Measurement Preparation ..................................................................................................- 11 -
5.3 Measurement Mode .............................................................................................................- 12 -
5.4 Notes for Measurement.......................................................................................................- 13 -
6parameter setup....................................................................................... - 13 -
6.1 Operation..............................................................................................................................- 13 -
6.2 Parameter Setup Reference Table .....................................................................................- 14 -
6.3 Parameters Description ......................................................................................................- 14 -
7Data Output Via USB Port........................................................................... - 15 -
7.1 Display Interface..................................................................................................................- 15 -
7.2 Operation Key in Software Interface .................................................................................- 15 -
7.3 Install Software ....................................................................................................................- 16 -
7.4 Run Software........................................................................................................................- 16 -
7.5 Data Processing...................................................................................................................- 16 -
8Replacement Parts ................................................................................... - 17 -
9Warranty ................................................................................................ - 16 -
V1.2

- 1 -
1 OVERVIEW
Thank you for purchasing Apera Instruments TN480 Portable Turbidity Meter (hereafter referred to as
the instrument).
The instrument uses infrared light emitting diode (LED 860±30nm) as the light source and 90°
scattering method, which is compliant with ISO7027 and DIN EN 27027 standards for the determination
of the turbidity for water solutions. TN480 allows you to measure turbidity in a reliable and simple
manner wherever you are.
Main features and functions
⚫Large TFT color screen, with on-screen instructions for easy operation.
⚫TruReadTM measurement mode automatically takes multiple consecutive readings, and calculate
their average, minimum and maximum value, as well as displaying each set of data in a brief test
report. TruReadTM is a much better way to determine the true turbidity of your samples, rather than
relying on just one reading. It's especially suitable for sample solutions with rapid settling and
continuous measurement changes.
⚫U.S. EPA certified, non-toxic, easy-to-use polymer standard calibration solutions
⚫Zero turbidity error reminder: the instrument has zero-point calibration and zero-point error reminder
to ensure measurement accuracy for low turbidity solutions.
⚫200 sets of data storage with USB data output to PC (Windows-based), unlimited data storage when
connecting with PC.
⚫Multi-language operating system, including English, Spanish, and Chinese.
⚫Rugged design, suitable for use in harsh environments and field.
⚫Everything comes in a rugged carrying case, including accessories such as calibration solutions,
sample cuvettes, software flashdrive, and more.

- 2 -
2 TECHNICAL SPECIFICATIONS
Measuring Method
ISO 7027 and DIN EN 27027 compliant nephelometric method (90°)
Light Source
Infrared light emitting diode (860±30nm)
Measuring Range
0 – 1000 NTU, automatic range selection:
0.01 – 19.99 NTU
20.0 – 99.9 NTU
100 – 1000 NTU
Accuracy
≤ ±2 % of reading + stray light
Repeatability
≤ ±1% of reading or 0.02 NTU (FTU), whichever is greater
Resolution
0.01 / 0.1 / 1 NTU (FNU)
Stray Light
≤0.02 NTU(FNU)
Calibration Standards
AMCO Polymer Solution or Formazin Solution: 0, 20, 100, 400 and
800 NTU (FNU)
Detector
Silicone photovoltaic
Measurement Mode
Normal measurement and TruReadTM measurement
Data Storage
200 sets
Data Output
USB to PC
Calibration Record
Calibration points, date, and time
Display
TFT color screen
Sample Cuvette
Φ25×60 mm, high borosilicate glass with lid
Sample Cuvette Volume
18 ml
Power Supply
4× AA Alkaline Batteries
Working Condition
Temperature: 0 to 50°C（32°F to 122°F）； Relative humidity：
0 to 90% at 30°C, 0 to 80% at 40°C, 0 to 70% at 50°C, no
condensation
Storage Condition
Instrument: -40 to 60°C (-40 to 140°F)
Calibration Solution: 5 to 30°C (41 to 86°F)
Instrument sealing grade
IP67
Certification
CE and RoHS
Limited Warranty
2 years
Dimension and Weight
Meter: (90×203×80) mm/385g
Test Kit: (310×295×110) mm/1.5kg

- 3 -
3 INSTRUMENT DESCRIPTION
3.1 Instrument Overview
①
Flip cover of the sample cuvette holder
(Close the cover when measuring)
⑥
Battery cover
②
Housing
⑦
Dust-proof plug (Take off the plug when
measuring)
③
Display
⑧
Sample cuvette holder
④
Keypad
⑨
Calibration cuvettes or sample cuvettes
⑤
USB Port
⑩
Positioning mark (Align the mark with the
mark on the calibration cuvette or sample
cuvette)
Diagram-1
⑩
⑦
⑧
⑨
①
②
③
④
⑤
⑥

- 4 -
3.2 Configuration
3.3 Display Mode
Measuring
Mode
Calibration
Mode
①
Calibration Solutions：
0.0, 20.0, 100, 400, 800 NTU
②
Carrying case
③
TN480 Turbidimeter
④
Microfiber cloth
⑤
Screwdriver (to remove battery
cover)
⑥
Software flash drive
⑦
AA Alkaline battery×4
⑧
Silicone oil (10 ml)
⑨
Sample cuevette×6
⑩
USB Cable (under the meter)
⑪
User Manual
①Calibration solution
②Measurements and
unit
③Progress bar
④Operation guide
①Measurement mode
②Measurements and unit
③Operation guide
④Battery icon
⑤Date and time
Diagram-2
①
②
③
④
⑤
⑨
⑧
⑥
⑦
⑩
⑪

- 5 -
Calibration
Menu
Parameter
Setup
Data Recall
3.4 Keypad
Diagram 3
①Calibration mode
②Standard values
③Operation guide
④Finished calibration
indicator
①Parameter Setup
②Menu
③Operation guide
①Data Recall
②Saved data numberings
③Saved data
④Operation guide
①
③
②
④

- 6 -
3.5 Power Supply
1. The instrument adopts 4 pieces of AA alkaline battery. Make sure not to mix new & old batteries or
different models of batteries.
2. Battery capacity indication
Battery capacity icon: Please replace new batteries when
icon displays to ensure measuring accuracy; when icon displays, the battery must be
replaced, otherwise the instrument can't work properly. To extend battery life, user can setup auto-
power off time in Parameter Setup P6 according to usage requirements.
3. Use the screwdriver to remove the screws on the battery cover. Insert 4 pieces of AA alkaline
battery. Please make sure the polarity is correct. Put on the battery cover and screw tightly.
3.6 Data Log, Recall, and Deletion
a) Manual data logging and Automatic data logging
In parameter setup P4, users can select manual or automatic data logging mode. In the manual mode,
after measurement is finished, press to save the data (also the measurement interface); In
automatic mode, the data (also the measurement interface) will be automatically saved after each
measurement. The instrument has two types of measurement mode: normal measurement (as in
Diagram 4) and TruReadTM measurement (Diagram 5). in Diagram 4 means that 12 sets of data
has been saved. The storage number only indicates the number of measurement interfaces. In normal
measurement mode, one serial number corresponds to one measurement data. In TruReadTM
Keypad
Functions
⚫Power on/off
⚫In measurement mode, press to enter or exit calibration mode
⚫In calibration mode, press to exit calibration mode
⚫In parameter setup and data 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 store number
⚫Press to enter parameter setup mode
⚫Short press to save measured data; long press (>3s) to enter data recall mode

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measurement mode, one serial number corresponds to multiple measurements (according to user’s
setting) in the measurement interface. The data, as shown in Diagram 5, has 10 measurements.
Obviously, for one measurement interface, the memory storage of the normal measurement is different
to that of TruReadTM measurement. The below table shows the amount of storage for each
measurement mode.
Measurement Mode
Storage Capacity
Normal
200 sets
TruReadTM（5 times measurement）
100 sets
TruReadTM（10 times measurement）
61 sets
TruReadTM（15 times measurement）
44 sets
TruReadTM（20 times measurement）
34 sets
Therefore, when the instrument is stored in a mixture of measurement mode, the storage capacity of
measurement interface is different, and it's between 34 to 200. If the stored value is full, will
flash to remind you and you need to clear the storage before saving new data.
b) Data Recall
In measurement mode, long press (>3s), the instrument will display the saved data interface. As
shown in Diagram 6, means there are 15 saved data 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.
c) 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, irreversible).
3.7 Setup for first-time use
Check and adjust settings for the following items: date, time, system language, etc. See the detail in
Section 6 Parameter settings.
Diagram 4
Diagram 5
Diagram 6

- 8 -
4 CALIBRATION
4.1 Preparation for Calibration
a) Calibration point
The instrument has 5 calibration points: 0 NTU, 20 NTU, 100 NTU, 400 NTU, and 800 NTU.
Among them, 0 NTU point uses AMCO 0.0 NTU calibration solution or laboratory distilled water,
and the remaining 4 calibration points use AMCO polymer solutions. Note that the cap of the 0.0
NTU solution cuvette can be unscrewed. After the solution is invalidated, users can replace the
0.0 NTU calibration solution or use fresh laboratory distilled water. The AMCO 0.0 NTU
calibration solution refill can be purchased from the supplier; For the remaining 4 calibration
solutions, their cuvette caps cannot be opened. Simply dispose the solutions after they are
expired and buy new ones from your supplier to replace. See the detail in Section 8 Replacement
Parts.
b) Replace 0.0 NTU turbidity standard solution
•Open the 0.0 NTU cuvette cap, pour out the original solution, add 1/2 distilled water, screw
on the cap and shake the cuvette to rinse it off and pour out the water. Repeat it 3 times.
Shake off the distilled water in the cuvette. Pour in new AMCO 0.0 NTU calibration solution
or fresh laboratory distilled water. Then close the cuvette cap.
•AMCO 0.0 NTU calibration solution has 6 to 12 months of shelf-life, distilled water is only
valid for a couple of days.
AMCO 0.0 NTU solution is provided in the default kit. For purchase details, please refer to Section 8
Replacement Parts.
c) Clean cuvette surface
Apply a small drop of silicone oil on the surface of the cuvette and wipe it off with a lint-free cloth to
evenly distribute the silicone oil on the surface in order to cover smudges and scratches,which helps
light scattering. But please pay attention to the following points:
①The silicone oil applied should not be too much. After wiping with lint-free cloth, please wipe with
filter paper or high-quality tissue paper to clean off. Excessive residual silicone oil on the cuvette
surface will affect the measurement accuracy.
②It's not necessary to use silicone oil for each calibration and measurement. Apply silicone oil
every several days or once a week. In between, just clean the surface with filter paper or high-
quality tissue paper.
③Clean the calibration cuvette and sample cuvette together and keep the steps and actions
consistent to achieve same degree of cleanliness.
④Stability of calibration solutions
The U.S EPA approved AMCO polymer standard calibration solution is very uniform and stable.
It does not precipitate, drift or condense. Generally, it can be used directly without shaking or
flipping the cuvette (to make the solution even). For AMCO polymer calibration solutions that
have not been used for a long time, slowly flip the cuvette twice and let it stand for 2 minutes.

- 9 -
Be careful not to shake the solution vigorously, as this will create air bubbles which will
destabilize the measurement; For 0.0 NTU calibration solution, do NOT shake or flip. If using
Formazin calibration solution, as it tends to precipitate easily, each time users must flip and
shake the cuvette to make the solution even. But sediment can still occur during tests and would
make the measurement unstable. Users need to have rich experience handling Formazin
calibration solutions.
4.2 Calibration Procedure (Take 0 NTU and 20 NTU as an example)
1) Instrument warm up (only required for low-range or high-accuracy measurement): Power on the
instrument, set parameter P2 (continuous measurement time) to 5 times. Long press to
start continuous measurement (don't insert the cuvette), then wait for 3 to 5 minutes.
2) Open the flip cover and place the 0.0 NTU calibration
cuvette. Align the arrow on the cuvette lid with the arrow
on the sample cuvette holder and close the flip cover.
3) Press to enter the calibration menu, the cursor is
at 0 NTU. Press to start calibration.
4) After calibration is done, press to confirm.
The instrument will return to the calibration menu (see
Diagram on the right side). The OK sign indicates that 0
NTU has been calibrated and prompt to calibrate 20 NTU.
5) Place the 20.0 NTU calibration cuvette in the sample
cuvette holder, press to start 20 NTU calibration.
After calibration is done, press to confirm. The
instrument will return to the calibration menu (see
diagram on the right side). The OK sign indicates that
20 NTU has been calibrated.

- 10 -
6) If you want to continue to calibrate 100, 400 and 800 NTU, place the 100 NTU calibration cuvette
in the sample cuvette holder and press to calibrate. After calibration is done, press
to confirm; repeat the steps to calibrate 400 NTU and 800 NTU. After calibration is done,
press to return to measurement mode.
7) Press to exit calibration mode, the instrument will
return to measurement mode as shown in the right
Diagram.
4.3 Notes for Calibration
a) Calibration point verification: The calibration point can be verified 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:
b) Calibration point selection: The instrument has been calibrated at full range before leaving the
factory. For subsequent use, you can select 2 or more points as needed, as long as the estimated
measurement range is between the two calibration points. In calibration setup mode, press or
to select the calibration point.
c) Low turbidity calibration requirement
•For low turbiditymeasurements (measurement less than 2 NTU), please test 0.0 NTU calibration
solution. If the accuracy is not meeting requirements, calibrate the instrument at 0.0 NTU and
20.0 NTU before test; then use 1#or 2#sample cuvette for measurement.
•Using the same sample cuvette to calibrate and measure can eliminate the error caused by
different cuvettes, thus reaching higher accuracy. For example, add laboratory distilled water to
1#cuvette for calibration and then add sample solution to 1#cuvette for measurement. Note that
the cuvette should be rinsed off thoroughly when changing solutions.
d) Zero Turbidity Error Reminder: 0 NTU is the reference point for low-turbidity measurement. Due
to the complexity of turbidity measurement, various inaccuracies resulting from instruments,
solutions, cuvettes, and operations can cause large errors at the 0 NTU point, which has a great
Calibration point
Accuracy for reference
0 NTU
≤0.05 NTU
20 NTU
≤±0.2 NTU
100 NTU
≤±2 NTU
400 NTU and 800 NTU
≤±5 NTU

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impact on the measurement accuracy of low turbidity solutions. When the reading is displayed as
0.00 NTU, if a positive error occurs, a 0.0 NTU calibration solution can be used for verification test.
If a negative error occurs, it cannot be verified. For this instrument, there is a Zero Turbidity Error
Reminder function. If the negative error at the zero point exceeds the preset value, it will prompt
users to recalibrate 0.0 NTU. At this time, please re-calibrate 0.0 NTU. If this prompt still comes up
after re-calibration, it means your 0.0 NTU standard solution may not be valid anymore. Please
replace the 0.0 NTU solution according to Section 4.1b and calibrate again. Please note that in
comparison to other calibration solutions, 0.0 NTU is more prone to deterioration and error.
e) High turbidity calibration requirement: For turbidity measurement greater than 2 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.
f) The instrument does not automatically recognize the calibration solution. If the wrong solution is
selected for calibration, the measurement will be completely wrong. In this case, it can be restored
by recalibrating all the points with the correct calibration solutions.
g) Place the instrument on a flat and level surface. Do not hold the instrument in hand while operating.
h) If using Formazin standards for calibration, please make sure to use the freshly made Formazin
standard to ensure calibration accuracy.
5 TURBIDITY MEASUREMENT
5.1 Sample Cuvette Handling
a) 6 sample cuvettes are included in the test kit. The cap is marked with 1#to 6#, and the bottom of the
cuvette also has the same number. The number of the cuvette and the cap should always be the
same. *Pay attention that 1#and 2#cuvettes are only for low turbidity solution measurement. (< 2
NTU)
b) The cuvette has been rigorously cleaned and sterilized. They can be used directly for the first time.
For subsequent uses, follow the steps below to perform a thorough cleaning.
⚫Clean the sample cuvette inside and outside with detergent → rinse with distilled water or
deionized water multiple times → Rinse the cuvette twice with the sample solution → Pour the
sample solution into the cuvette → Close the cap.
5.2 Measurement Preparation
a) Collect the sample solution with a clean container and add the
solution to the 4/5 of the cuvette (about 18ml), see Diagram 7.
Then close the lid.
b) Before the measurement, users can slowly flip the sample
cuvette a few times and let it stand for 2 to 5 minutes to eliminate
potential air bubbles (see Diagram 8).
Diagram 7
Diagram 8

- 12 -
c) Make sure thesurface of the cuvette is dry, clean and free of stains. Applya small drop of silicone
oil on the surface of the cuvette and wipe it off with a micro-fiber cloth. Then wipe again with filter
paper or high-quality tissue paper. See section 4.1(c) for details.
5.3 Measurement Mode
a) Normal Measurement Mode
Press , the screen will display the progress bar, and the measured value will be
displayed in 10 seconds. To take the next measurement, press again.
b) TruReadTM Measurement Mode
Long press and release the key when you hear a beep (see Diagram 9.1), then enter
TruReadTM mode. For example, if the number of continuous measurements is set to 20 times
in parameter setting P2, a measured value will be displayed every 20 seconds. Diagram 9.2
is the third measurement. Diagram 9.3 is the display interface at the end of TruReadTM
measurement. The average, maximum and minimum values will be displayed along with a
list of 20 measured values. TruReadTM measurement mode can be used for observing the
stabilizing process of turbidity, and can also be used for testing rapid-settling solutions.
c) We Recommend using TruReadTM Measurement Mode
Turbidity measurement is a complex analytical measurement. Its error and stability are related
not only to the design of the instrument, but also many other factors such as solution uniformity
and precipitation, stray light, air bubble interference, sample cuvette contamination, optical errors,
and operation technique. Therefore, using normal measurement mode will obviously result in a
larger error. For this reason, we recommend using TruReadTM measurement mode with 5 times
continuous measurement for regular tests, that is, set the continuous measurement to 5 times in
parameter setting P2 and read the average value each time to improve the measurement
accuracy. Compare the maximum and minimum values at the same time. If the difference is too
large, it means that the measured value is not reliable, the solution may be unstable or there
might be other factors affecting the measurement. Users need to check the causes and measure
again. For rapid-settling or continuously changing solutions, set continuous measurement for 10,
15 or 20 times.
Diagram 9.3
Diagram 9.2
Diagram 9.1

- 13 -
5.4 Notes for Measurement
a) Keep the sample stable: After the cuvette is placed into the sample cell, it is recommended to wait
for 1 to 2 minutes before calibration, as the solution will experience some shaking when the cuvette
moves, which may result in inaccurate measurements.
b) Sample Cuvette cleaning requirement: Sample cuvette must be rigorously cleaned and free from
smudges and scratches. When wiping, user should grip the cap and bottom to avoid leaving
fingerprints on the surface of the cuvette. Its surface should be applied with a drop of silicone oil be
wiped with a micro-fiber cloth. After that, please clean with filter paper or high-quality tissue paper.
See section 4.1(c) for details.
c) Mixing and Degassing: Samples should not be vigorously shaken or vibrated. It is recommended
thatusersgently shakethesample cuvettetomake solutionevenlydistributed.Air bubblesinsolution
will cause big error to turbidity measurement. So, the cuvette should be left stand still for 2 to 5
minutes to eliminate potential air bubbles before measuring. But mixing and degassing
simultaneously is a difficultprocess to handle, especially for solution with precipitates, which requires
some operating experience or making some limits in test conditions, for example, limiting the mixing
condition and waiting time for degassing to be the same before comparing measurements.
d) Other Requirements
⚫On the premise of ensuring evenly distributed samples, sample solution should be measured
immediately to prevent temperature changing and precipitates from affecting measurements.
⚫Avoid sample dilution for measurement as much as possible.
⚫Avoid operating under direct sunlight.
⚫Do not pour solution into the cuvette holder. Sample cuvettes must be used for measurement.
⚫Please do not wash the cuvette holder as this may damage its optical structure.
6 PARAMETER SETUP
6.1 Operation
Press to enter 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.

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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 logging mode: users can select automatic data logging mode or manual data logging mode
(see section 3.6 for details)
P5 ─ Delete saved data: select Yes to delete all the saved data (non-reversible)
P6 ─ Auto. close timer: users can select in how soon 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, Spanish, or Chinese as the system language.
P8 and P9 ─ set up date and time: in the setting process icon indicates to switch between date and
time, icon indicates to change the digit of date and time.
Symbol
Parameter
Content
P1
Last calibration date and time
View
P2
Continuous measurement
5-10-15-20
P3
Measurement unit
NTU-FTU
P4
Data logging mode
manual-automatic
P5
Delete saved data
No-Yes
P6
Auto-power off timer
10-20-30-OFF
P7
Select language
English-Spanish-Chinese
P8
Date setting
/
P9
Time setting
/

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7 DATA OUTPUT VIA USB PORT
7.1 Display Interface
①— Display area for saved data
To display numberings, date, time, measurement method (normal measurement or continuous
measurement), measured values, and measurement unit. For continuous measurement, average,
maximum, and minimum values will also be displayed.
②— Instrument serial number, last calibration information and parameter setting information.
③— Function buttons
7.2 Operation Key in Software Interface
Refresh — Port reset key. When the instrument and computer are not connected, click to connect.
SyncTime — Sync time key, click to sync computer time with instrument time.
Download — Download key, click to send data from instrument memory to computer.
Clear — Clear key, click to delete data saved in computer (data saved in instrument will not be deleted).
Export — Export key, click to export the saved data to computer in a Microsoft Excel document.
Exit — Exit key, press to exit PC-Link program.
①
②
③
Diagram 10

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7.3 Install Software
The instrument uses Turbidimeter PC-Link communication software. It is only compatible with Windows-
based operating system. The communication port is USB. Copy and paste the program files from the
USB drive to the computer. Connect USB cable to the instrument and computer, open Turbidimeter PC-
Link.exe, the instrument will connect with computer automatically. icon will be displayed at the top
of LCD screen. If the instrument cannot connect with computer, please click "Refresh" key or install the
relevant software driver included in the USB drive.
7.4 Run Software
Click Download key, all data in the instrument memory will be sent to the computer. When the program is
running, all measurement information will be sent to the computer via USB. There is no data storage limit
and the data will not be saved in the instrument. In Manual data logging mode, press key after
measurement is completed to save data in the computer; in Auto. data logging mode, data will be
automatically saved in the computer after each measurement is completed. For TruReadTM measurement
mode, it will save all the measured values along with maximum, minimum and average values.
7.5 Data Processing
Click Export key to export saved data to a Microsoft Excel document. The data can be further analyzed
and printed.
8 REPLACEM ENT PARTS
Model
Name
Description
Quantity
T500-2
AMCO 0.0 NTU calibration
solution
0.0 NTU/100mL
1 bottle
T200-1
20/100/400/800 NTU
AMCO polymer solutions
Compatible with
TN400&TN480
4 bottles
T500-3
Sample cuvettes with lid
Φ25×60mm，1# to 6#
6 pcs
TN400-S3
Silicone oil
10mL
1 bottle

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9 WARRANTY
We warrant this instrument to be free from defects in material and workmanship and agree to repair or
replace free of charge, at the option of APERA INSTRUMENTS, LLC, any malfunctioned or damaged
product attributable to the responsibility of APERA INSTRUMENTS, LLC for a period of TWO YEARS for
the instrument from the delivery.
This limited warranty does NOT cover any issues due to:
⚫Accidental damage
⚫Improper use
⚫Normal wear and tear
⚫Transportation
⚫Storage
⚫Failure to follow the product instructions
⚫Unauthorized maintenance, modifications, combination or use with any products, materials,
processes, systems or other matter
⚫Unauthorized repair
⚫External causes and other actions or events beyond our reasonable control.

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APERA INSTRUMENTS, LLC
Address: 6656 Busch Blvd, Columbus Ohio 43229
Tel: [phone]
Email: [e-mail]
Website: aperainst.com