Sper scientific 860040 Guide

Turbidity Meter
860040
Instruction Manual

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TABLE OF CONTENTS
INTRODUCTION .................................................................2
FEATURES ..........................................................................3
MATERIALS SUPPLIED ......................................................3
FRONT PANEL DESCRIPTION ..........................................4
SET UP ................................................................................5
CALIBRATION .....................................................................6
MEASUREMENT PROCEDURES ......................................8
ZERO ADJUSTMENT ..........................................................9
CARE AND MAINTENANCE .............................................11
SPECIFICATIONS .............................................................11
WARRANTY ......................................................................12
INTRODUCTION
This Sper Scientic Turbidity Meter (model 860040)
displays the turbidity level of aqueous solutions on a
large LCD screen. This meter can measure numerous
di󰀨erent types of aqueous solutions and o󰀨ers a two-point
self-calibration feature that can be performed in under a
minute. The meter conveniently displays turbidity in the
internationally recognized Nephelometric Turbidity Unit
of measure (NTU), used in many industries including the
beer/wine, water quality, biological growth, and chemical
manufacturing industries.

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FEATURES
• Reads turbidity values of aqueous solutions
• Protective chamber with lid to prevent debris from entering
• Maximum and Minimum values
• Portable design for use in the eld or laboratory
• Data Hold Function
• Optional DC adapter for eld use
• Zero adjustment feature for low turbidity solutions
MATERIALS SUPPLIED
• Turbidity meter
• Calibration standards solutions of 0 NTU and 100 NTU
• 2 sampling bottles
• Instruction manual
• 6 AAA batteries
• Carrying case with custom foam interior
• Low Lint Cloth
• Distilled Water for cleaning

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FRONT PANEL DESCRIPTION
1. Chamber Lid/protective cover
2. Testing chamber
3. LCD screen
4. Data Hold Button
5. Test / Calibration Button
6. Power Button
7. Zero Button
8. Min/Max Button
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3. FRONT PANEL DESCRIPTION
3-1 Cover of Testing bottle
3-2 Container of Testing bottle
3-3 Display
3-4 Hold Button ( Esc Button )
3-5 TEST/CAL Button
3-6 Power Button
3-7 ZERO Button
3-8 REC Button ( MAX, MIN Button )
3-9 Testing bottle with 0 NTU standard solution
3-10 Testing bottle with 100 NTU standard solution
3-11 Empty testing bottle 1
3-12 Empty testing bottle 2
3-13 Battery Compartment/Cover
3-14 Clean Cloth
3-15 Clean Solution ( Distill Water )
3
8
7
6
5
4
3
2
1

5
SET UP
Battery Installation
This meter uses six AAA batteries. To install the batteries
before rst use:
1. Unscrew the two screws on the back of the meter. These
screws secure the battery cover.
2. Remove the battery cover.
3. Insert six new AAA batteries, ensuring correct polarity.
4. Replace the battery cover and reinstall the screws.
Replace the batteries when the low-battery icon blinks on
the LCD.
Note…
Before replacing the batteries, turn the meter o󰀨.
Meter On and O󰀨
1. Press POWER to turn the meter on/o󰀨
2. The meter will automatically turn o󰀨 after ten minutes
of inactivity.

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CALIBRATION
Before beginning the calibration procedure, locate the two
calibration solutions and keep them close to the meter. If
the calibration is not performed quickly, the meter will return
to test mode and the calibration will not hold. While this
does not damage the meter, the calibration will have to be
performed again.
1. Remove the 0NTU and 100NTU bottles from their
protective cases. Tighten both caps and shake the bottles
gently to ensure they are properly mixed.
2. Clean the outside of both bottles to ensure there are no
ngerprints on the glass. Fingerprints or dirt on the glass
will alter the readings, so it is critical to handle the bottles
by the cap from this point on.
3. Turn the meter on.
4. Press and hold the TEST/CAL button until CAL appears
on the screen.
5. Let go of the TEST/CAL button. The screen will display
0.0, prompting for the 0NTU standard solution. You will
have 20 seconds to perform the next step or the meter will
exit calibration mode and return to test mode.

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6. Place the 0NTU bottle into the test chamber, lining the
vertical white line of the bottle with the white dot on the
meter. Close the lid and press the TEST/CAL button once.
The meter will ash the word CAL on the screen for up to
ten seconds.
Note…
If the word Test appears on the screen, you did not perform
step 6 fast enough and will need to repeat the process.
7. If the zero point calibration was successful, the meter
will stop blinking and display the number 100, prompting
for the 100NTU standard solution. Again, you will have
20 seconds to perform this step or the meter will exit
calibration mode.
8. Place the 100NTU bottle into the test chamber, lining
the vertical white line of the bottle with the white dot on
the meter. Close the lid and press the TEST/CAL button
once. The meter will ash CAL on the screen for up to
ten seconds.
Note…
If TEST appears on the screen, you did not perform the
100NTU point fast enough and will need to repeat the process.
9. If the calibration was successful, the screen will stop
blinking and display 0.0, indicating that it is ready to
test samples.

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MEASUREMENT PROCEDURES
For Single Point Readings
1. Pour test sample into one of the two included sample vials.
2. Gently shake the bottle to ensure the sample is properly
mixed. If there is sediment in the sample that sinks to the
bottle of the vial, the meter will not detect it.
3. Tighten the cap and clean the outside of the sample bottle
with a lint free cloth. Be careful not to touch the glass as
ngerprints can a󰀨ect the readings. Handle the sample
vial by the cap.
4. Place the sample vial in the test chamber, lining up the
white line on the bottle with the white dot on the meter.
5. Press the TEST/CAL button once.
For Multi Point Readings
Multi-point mode produces the minimum and maximum
values of a set of samples. This is especially useful in the
case where there are slight changes in the turbidity of many
samples or there is heavy sediment in a single sample.
In the case of sediment, you can use this function to get
a minimum and maximum reading based on how well the
sample is mixed.
Note…
This mode will only provide the minimum and maximum of
the samples tested and will not internally store or recall the
individual readings within that sample set.
1. Press the MIN/MAX button to enter multi-point mode. REC
will appear in the upper right hand corner of the meter.
2. Prepare the test sample in the included sample vials and
ensure they are clean, dry and free of ngerprints.
3. Place the test sample in the chamber and close the lid.
4. Press the TEST/CAL button once. The meter will display
the turbidity value of the sample in NTU.

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5. Repeat steps 3 and 4 for all samples. The meter can
analyze up to 50 samples.
6. Press the MIN/MAX button when you are nished with
all samples. After pressing the MIN/MAX button, no new
values can be added to the set.
7. Press the MIN/MAX button as often as needed to display
the minimum and maximum turbidity values of the data set
in NTU.
8. Press and hold the Min/Max button to exit the Multi-
Point mode.
9. After exiting, all values are cleared. Therefore, the next
time you enter Multi-Point mode, the meter will only
analyze the samples within the new set.
Zero Point Adjustment
This feature is used for low turbidity systems such as well
water, tap water, or surface water from lakes and rivers. This
method is e󰀨ective for any solutions whose expected value
is <2.0 NTU. The feature allows you to dene a custom
standard for the zero value. All successive measurements
will be o󰀨set by this zero value.
Note…
The Zero Adjustment is NOT a calibration. Calibration
is performed using the 0NTU and 100NTU solutions as
described on page 6.
1. Obtain a sample of your zero standard. This standard
should be the lowest turbidity seen in your sample sets.
For example, if you were testing a ltration system for
drinking water, you would want to obtain a sample from
the most successful ltration produced.
2. Place your sample in one of the included test bottles,
tighten the cap and ensure the outside of the bottle is free
of ngerprints.

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3. Place the sample in the test chamber lining up the two
white lines and close the lid.
4. Press and hold the ZERO button until ZERO appears on
the LCD and release the button.
5. The screen will display 0.0 NTU.
6. All readings will be o󰀨set by the zero value until the meter
is recalibrated or zeroed with the 0NTU standard.
Data Hold
The Minimum/Maximum functions on the meter are disabled
during data hold. Also, new readings cannot be taken.
1. Press HOLD to freeze the reading on the display. “Hold”
appears at the top of the LCD and the reading remains on
the display until hold is disabled.
2. Press HOLD to return to Normal Mode.

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CARE AND MAINTENANCE
• Never wash sample bottles with tap water. The residue left
behind can alter readings. Use the included distilled water
to clean the sample vials.
• Store the meter with the lid closed to prevent debris from
entering the test chamber.
• Periodically wipe the meter with a dry, lint-free
antistatic cloth.
• Do not use abrasives, solvents or cleaning agents
containing carbon, alcohol or benzenes on the meter.
• Repairs or services not covered in this manual should be
performed by qualied personnel only. Please contact Sper
Scientic to speak with a technician.
• Periodically wipe the test chamber with a lint free cloth to
ensure the internal lens is clean.
SPECIFICATIONS
Range Resolution Accuracy
Turbidity 0 – 49.99 NTU 0.01 NTU ±5% RDG or 0.5 NTU,
whichever is greater
50 – 1000 NTU 1 NTU ±5% RDG or 5 NTU,
whichever is greater
Operating
Temperature
and Humidity
0 - 50°C
And less than 85% Relative Humidity
Power
Supply
AAA, 1.5V battery x 6
Battery Life 250 hours

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WARRANTY
Sper Scientic warrants this product against defects in
materials and workmanship for a period of one (1) year
from the date of purchase, and agrees to repair or replace
any defective unit without charge. If your model has since
been discontinued, an equivalent Sper Scientic product
will be substituted if available. This warranty does not cover
sample vials, batteries, battery leakage, or damage resulting
from accident, tampering, misuse, or abuse of the product.
Opening the meter to expose its electronics will break the
waterproof seal and void the warranty. To obtain warranty
service, ship the unit postage prepaid to:
SPER SCIENTIFIC LTD.
8281 E. Evans Rd., Suite #103
Scottsdale, AZ 85260
[phone]
The defective unit must be accompanied by a description of
the problem and your return address. Register your product
online at www.sperwarranty.com within 10 days of purchase.
rev. 3/15/2018