APERA TN500 Portable Turbidity Meter Instruction Manual
- June 3, 2024
- APERA
Table of Contents
TN500 Portable Turbidity Meter
TN500 Portable Turbidity Meter Instruction Manual
APERA INSTRUMENTS (Europe) GmbH
www.aperainst.de
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Table of Contents
1 Introduction………………………………………………………………………………………………… – 3 2 Technical
Specifications ………………………………………………………………………………. – 4 3 Instrumentation
Illustration……………………………………………………………………………. – 5 –
3.1 Summary ……………………………………………………………………………………………… – 5 3.2 Configuration
………………………………………………………………………………………… – 6 3.3 Display
Mode………………………………………………………………………………………… – 6 3.4 Keypad
………………………………………………………………………………………………… – 7 3.5 Power
supply………………………………………………………………………………………… – 8 3.6 Data Log, Recall, and
Deletion………………………………………………………………… – 8 3.7 Setting for first-time use.
………………………………………………………………………… – 9 4 Calibration
……………………………………………………………………………………………….. – 10 4.1 Preparation for Calibration
……………………………………………………………………. – 10 4.2 Calibration Procedure (Take 0 NTU and 20
NTU as an example) …………………- 11 4.3 Notes for
Calibration…………………………………………………………………………….. – 12 5 Turbidity Measurement
………………………………………………………………………………. – 13 5.1 Sample Vial Handling
…………………………………………………………………………… – 13 5.2 Measurement Preparation
…………………………………………………………………….. – 14 5.3 Measurement Mode
…………………………………………………………………………….. – 14 5.4 Notes for Measurement
………………………………………………………………………… – 15 6 Parameter Setup
………………………………………………………………………………………. – 16 6.1 Operation
…………………………………………………………………………………………… – 16 6.2 Parameter Setup Reference Table
…………………………………………………………. – 16 6.3 Parameters Description
………………………………………………………………………… – 16 7 Data Output via USB
Port…………………………………………………………………………… – 17 7.1 Display
Interface………………………………………………………………………………….. – 17 7.2 Operation Key in Software
Interface……………………………………………………….. – 17 7.3 Install
Software……………………………………………………………………………………. – 18 7.4 Run
Software………………………………………………………………………………………. – 18 7.5 Data Processing
………………………………………………………………………………….. – 18 8 Lamp Replacement
…………………………………………………………………………………… – 18 8.1 Light source check
………………………………………………………………………………. – 18 8.2 Lamp Replacement
……………………………………………………………………………… – 18 9 Warranty
………………………………………………………………………………………………….. – 20 10 Replacement parts
……………………………………………………………………………………. – 20 –
*Fully charge the battery before first-time use.
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1 INTRODUCTION
Thank you for purchasing Apera Instruments TN500 Portable Turbidity Meter
(hereafter referred to as the instrument). The instrument uses tungsten
filament lamp as the light source and 90° scattering method, which is
compliant with U.S EPA 180.1 method for the determination of turbidity in
drinking, ground, surface, and saline waters, domestic and industrial wastes.
It is suitable for on-site and laboratory use.
The instrument provides accurate results with simple measurement, calibration,
and data management, giving you unparalleled confidence in test results and
ease of use. 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 filament lamp. Large TFT color screen
with blue background for measurement mode, green background for calibration
mode. Operation guidance and reminders in the process of calibration,
measurement and parameter setting. 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. 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). 3.7V rechargeable lithium battery can supply power for over 20 hours
of continuous measurement. The battery life is 5 times longer compared with
tungsten lamp turbidimeter in the market using AA alkaline batteries. Multi-
language operating system, including English, Spanish & Simplified Chinese.
The instrument’s structure meets IP67 water-resistant grade and is suitable
for use in harsh environments. Everything comes in a rugged carrying case,
including accessories such as calibration solutions, test vials, USB charger,
and more.
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2 TECHNICAL SPECIFICATIONS
Specification
Description
Measurement Method
90° scattering measurement, U.S EPA180.1 compliant
Light Source Measuring Range
Tungsten (400 600nm) filament lamp
0 to 1000 NTU (FNU), automatic range switch 0.01 to 19.99 NTU(FNU) 20.0 to
99.9 NTU(FNU) 100 to 1000 NTU(FNU)
Accuracy Repeatability
Resolution
±2% of reading+ stray light ± 1% of reading or 0.02 NTU(FNU) (the greater of
the two)
0.01/0.1/1 NTU (FNU)
Stray Light Calibration Standard
Detector Measuring Mode
Data Storage Data Output Calibration Record
Display Sample Vial Sample Vial Volume Power supply
0.02 NTU (FNU) AMCO Polymer or Formazin Solution
0, 20, 100, 400 and 800 NTU (FNU) Silicon photovoltaic
Normal measurement and TruReadTM measurement 200 groups USB to PC
Calibration date and time TFT color screen
25×60 mmhigh borosilicate glass with lid 18 ml
3.7V Rechargeable lithium battery
Working Condition
Instrument sealing grade
Storage Condition
Certificates
Limited Warranty Dimension and
Weight
Temperature: 0 to 50°C32°F to 122°FRelative humidity 0 to 90% at 30°C, 0 to
80%at 40°C, 0 to 70% at 50°C, no condensation
IP67
Instrument: -40 to 60°C (-40 to 140°F) Calibration Solution: 5 to 30°C (41 to
86°F)
CE and RoHS
2 years
Meter: (90×203×80) mm/385g Test Kit: (310×295×110) mm/1.5kg
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3 INSTRUMENTATION ILLUSTRATION
3.1 Summary
Diagram-1
Flip cover of the sample vial holder (Close the cover when measuring)
Housing Display Keypad USB Port Lamp cove
Dust proof plug (Take off the plug when measuring)
Sample vial holder Calibration vials or sample vials Positioning mark (Align
the mark with the
mark on the calibration vial or sample vial) Built-in lithium battery
(Rechargeable)
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3.2 Configuration
Diagram-2
3.3 Display Mode
Measuring Mode
Calibration Mode
Calibration Menu
Calibration Solutions
0.0, 20, 100, 400, 800 NTU
Carrying case TN500 Turbidimeter
Microfiber cloth
Power adaptor (5V 1A)
Software flash drive Silicone oil (10 ml)
Sample vials×6
USB Cable (under the meter)
User Manual
Measurement Mode Measurements and unit Operation Guide Battery icon Date and
time
Calibration solution Measurements and unit Progress bar Operation guide
Calibration Mode Standard values Operation guide Finished calibration
indicator
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Parameter Setup
Data Recall
3.4 Keypad
Parameter Setup Menu Operation guide
Data Recall Saved data numberings Saved data Operation guide
Diagram-3
Keypad
Functions
· Power on/off
· In measurement mode, press to enter or 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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3.5 Power supply
The instrument adopts 3.7V rechargeable lithium battery.
a) Charging mode
· Charge via Power adaptor: connect instrument and power adaptor with a USB
cable. Adaptor specification: AC110 to 240V, 50/60Hz, output: 5V/1A.
· Charge via Computer: connect instrument and a computer with a USB cable.
Under normal circumstances, it is recommended to use the power adapter to
charge the lithium battery to ensure its performance. When the lithium battery
voltage is lower than 3V, the instrument will shut down, and it’s time to
recharge it.
b) Battery capacity indication
· Battery capacity icon:
, please recharge the battery when
icon displays to ensure measuring accuracy; when
icon displays, the battery
must be recharged, otherwise the instrument can’t work properly.
· If charging the instrument when it is turned on,
icon will be displayed. Users can
continue to use the instrument while it is being charged. · If charging the
instrument when it is turned off, “Charging……” will be displayed, and
“Charging is completed” will be displayed after a full charge.
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 have been saved. The storage number only indicates the number of measurement interfaces, which is not equal to the number of actual stored data. In normal measurement mode, one serial number corresponds to one measurement data. In TruReadTM 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 with that of TruReadTM measurement. The below table shows the amount of storage for each measurement mode.
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Measurement Mode Normal
TruReadTM5 times measurement TruReadTM10 times measurement TruReadTM15 times
measurement TruReadTM20 times measurement
Storage Capacity 200 sets 100 sets 61 sets 44 sets 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 that the storage is full, and you need to delete it before saving new data.
b) Data Recall
In measurement mode, long press
(>3s), the instrument will display the saved measurement
interface. As shown in Diagram 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.
Diagram 4
Diagram 5
Diagram 6
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 non-reversible).
to confirm the deletion (will delete all of the saved data,
3.7 Setting for first-time use. The instrument should be fully charged before first-time use. Check and adjust settings for the following items: date, time, system language, etc. See the detail in Section 6 Parameter setup.
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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 vial can be
unscrewed. After the solution is invalidated, users can replace the 0.0 NTU
calibration solution or laboratory distilled water. The 0.0 NTU calibration
solution can be purchased from the supplier; For the remaining 4 calibration
solutions, their vial caps cannot be opened. Simply dispose the solutions
after they are expired and buy new ones from your supplier to replace. b)
Replace zero turbidity solution
· Replace 0.0 NTU calibration solution: open the vial cap, pour out the
original solution, add 1/2 distilled water, cover the cap and shake the vial
to rinse it and pour out the water. Repeat it 3 times. Shake off the distilled
water in the vial. Pour in new 0.0 NTU calibration solution and close the vial
cap.
· Replace laboratory distilled water: open the vial cap, pour out the original
solution, add 1/2 distilled water, cover the cap and shake the vial to rinse
it and pour out the water. Repeat it 3 times. Shake off the distilled water in
the vial. Pour in new laboratory distilled water and close the vial cap.
· The accuracy of 0.0 NTU calibration solution and laboratory distilled water
is same. But 0.0 NTU calibration solution has 6 to 12 months of shelf-life,
distilled water can only be used for several days.
c) Clean vial surface Apply a small drop of silicone oil on the surface of the
vial and wipe it off with a micro-fiber cloth to evenly distribute the
silicone oil on the surface so as to cover smudges or scratches, which helps
light scattering. But please pay special attention to the following points:
The silicone oil applied should not be too much. After wiping with micro-fiber
cloth, please wipe with filter paper or high-quality tissue paper to clean
off. Excessive residual silicon oil on the vial surface will affect the
measurement accuracy.
It’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 highquality tissue paper.
Clean the calibration vial and sample vial together and keep the steps and
actions consistent to achieve same degree of cleanliness.
Stability 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. It can be used directly without shaking or fliping the vial
(to make the solution even). For polymer calibration solutions that have not
been used for a long time, slowly flip the vial twice and let it stand for 2
minutes. Be careful not to shake the solution vigorously, as this will create
air bubbles which destabilize the measurement; For 0.0
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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 vial to make the solution even. But sediment can still occur during tests and make the measurement unstable. Users need to have rich experience with Formazin calibration solutions.
4.2 Calibration Procedure (Take 0 NTU and 20 NTU as an example)
- Instrument warm up: Power on the instrument, set parameter P2 (continuous measurement
time) to 5 times. Long press then wait for 3 to 5 minutes.
to start continuous measurement (don’t insert the vial),
-
Open the flip cover and place the 0.0 NTU calibration vial. Align the arrow on the vial lid with the one on the sample vial holder and close the flip cover.
-
Press
to enter the calibration menu, the cursor
is at 0 NTU. Press
to start 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 0 NTU has been calibrated and prompt to calibrate 20 NTU.
- Place the 20.0 NTU calibration vial in the sample
vial 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
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- If you want to continue to calibrate 100, 400 and 800 NTU, place the 100 NTU calibration
vial in the sample vial 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.
- Press
to exit calibration mode, the instrument
will return to measurement mode as shown in Diagram on the right side.
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:
Calibration point 0 NTU 20 NTU
100 NTU 400 NTU and 800 NTU
Accuracy for reference 0.05 NTU ±0.2 NTU ±2 NTU ±5 NTU
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 turbidity measurements (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# vial for measurement. · Using the same sample vial to calibrate and measure can eliminate the error caused by different vials, thus reaching higher accuracy. For example, add distilled water to 1# vial for calibration and then add sample solution to 1# vial for measurement. Note that the solution vial should be rinsed thoroughly when changing solutions.
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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, vials, and operations can cause large errors at the 0 NTU point, which has a great 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, users can press
to measure 1 or 2
more times. If the prompt appears continuously, please recalibrate 0.0 NTU. In addition, compared with other calibration solutions, The 0.0 NTU solution is more prone to deterioration and error. When the 0.0 NTU solution is found to be turbid or flocculent, or if it is judged that it may be out of tolerance based on the experience of sample tests, please replace the 0.0 NTU solution in time according to the requirements in Section 4.1b. 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 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 note that the diluted Formazin standard is unstable. Please make sure to use the freshly made Formazin standard to ensure calibration accuracy.
5 TURBIDITY MEASUREMENT
5.1 Sample Vial Handling a) 6 sample vials are included in the test kit. 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
always be the same. *Pay attention that 1# and 2# vials are only for low
turbidity solution measurement. (< 2 NTU) b) The vial 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 inside and outside of the sample vial holder 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 Close the cap.
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5.2 Measurement Preparation
a) Collect the sample solution with a clean container and add the
solution to the 4/5 of the vial (about 18ml), see Diagram 7. Then
close the lid.
b) Before the measurement, users can slowly flip the sample vial
a few times and let it stand for 2 to 5 minutes to eliminate
potential air bubbles (see Diagram 8).
Diagram
Diagram 8
c) Clean off the surface of the vial to ensure it is dry, clean and free 7
of stains. Apply a small drop of silicone oil on the surface of the vial 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 20 seconds. To take the next measurement, press b) TruReadTM Measurement Mode
again.
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.
Diagram 9.1
Diagram 9.2
Diagram 9.3
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 vial contamination, optical errors,
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operation technology and more. 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. You
need to check the root-cause and measure again. For rapid-settling or
continuously changing solutions, set continuous measurement for 10, 15 or 20
times.
5.4 Notes for Measurement a) Keep the sample stable: After the vial 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 vial moves,
which may result in inaccurate measurements. b) Sample Vial cleaning
requirement: Sample vial 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 vial. 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 that users gently shake the sample vial to make
solution evenly distributed. Air bubbles in solution will cause big error to
turbidity measurement. So, the vial should be left stand still for 2 to 5
minutes to eliminate potential air bubbles before measuring. But mixing and
degassing simultaneously is a difficult process to handle, especially for
solution with precipitates, which requires some operating experience or make
some limits in test conditions. For example, limit 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 sample vial holder. Sample vials must be used for
measurement. Please do not wash the sample vial holder as this may damage its
optical structure.
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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.
6.2 Parameter Setup Reference Table
Symbol P1 P2 P3 P4 P5
Parameter Last calibration date and time
Continuous measurement Measurement unit Data logging mode Delete saved data
Content View
5-10-15-20 NTU-FTU manual-automatic No-Yes
P6
Auto-power off timer
10-20-30-OFF
P7
Select language
English-Spanish-Chinese
P8
Date setting
/
P9
Time setting
/
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.
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7 DATA OUTPUT VIA USB PORT
7.1 Display Interface
Diagram 10
— 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. — Instrument serial number, last calibration
information and parameter setting information. — 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.
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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 LAMP REPLACEMENT
8.1 Light source check Observe the light source on the left side of the sample vial holder as in Diagram 11. Turn on the
instrument, and press
. The light source will light up for 5 seconds. If it’s not lighting up or it’s
flashing, please replace the lamp.
8.2 Lamp Replacement The tungsten filament lamp module (sold separately) is shown as in Diagram 12. The lamp hole and socket are as in Diagram 13. Diagram 14 shows you how to replace the lamp.
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Light source
tungsten filament lamp
gasket
lamp cover
socket
lamp hole
Diagram 11 Check light source
Socket
Diagram 12 Tungsten filament lamp module
Diagram 13 lamp hole and socket
Unscrew the lamp cover with a coin
Use a tweezer to unplug the socket
Use a tweezer to unscrew the lamp cover.
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.
Use a tweezer to plug wire into the gap and plug in the socket
Screw on the lamp cover tightly
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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 any malfunctioned or damaged product attributable to the
responsibility of APERA INSTRUMENTS 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 modifications or repair, and
other external causes or actions beyond our reasonable control.
10 REPLACEMENT PARTS
Model T500-2
T500-1 T500-3 T500-5 T500-4 TN400-S3
Name AMCO 0.0 NTU calibration
solution 20/100/400/800 NTU
AMCO polymer Sample vials with lid
Tungsten filament lamp
Rechargeable lithium battery
Silicone oil
Description
0.0 NTU/100mL Compatible with TN500&TN420 25×60mm1# to 6#
/ 3.7 V 10mL
Quantity 1 bottle
4 bottles 6 pcs 1 pc 1 pc 1 bottle
APERA INSTRUMENTS (Europe) GmbH Address: Wilhelm-Muthmann-Str. 18, 42329
Wuppertal, Germany Email: info@aperainst.de | www.aperainst.de | Tel: +49 202
51988998
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References
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