Measurement Procedure; Troubleshooting Guide - Oakton T-100 Instructions D'utilisation

Oakton
T-100 Waterproof Turbidimeter Operation Instructions

Measurement Procedure

1. Turn meter off, and place on a fl at, level surface.
2. Place the sample vial inside the sample well and align the vial's
index mark with the meter's index mark.
Align index mark
on the vial with
the index mark on
the turbidimeter
3. Push the vial down until it is seated.
4. Place the light shield cover over the vial that is inserted into the
sample well.
5. Turn on the meter by pressing the ON/OFF key. After the power-up
sequence, the meter goes to measurement mode and the display
blinks " ". The measured reading appears in the display.
* When meter is in " " mode after calibration it is ready for
measurement. Press the READ/ENTER key. The display blinks
" " until the measured reading appears.
Notes:
• NEVER pour liquid directly into the sample well of the instrument.
Always use a vial. The instrument will only accurately measure the
turbidity of a sample when vials sealed with the black caps are
used. The black cap serves as both seal and a primary light shield.
• NEVER attempt to clean the sample well. The optics may
be damaged.
• For battery conservation, the instrument automatically powers off
20 minutes after the last key pressed.
Measurement Sequence
Place sample
Sample
vial into the
Unknown
NTU
sample well
Power on meter or from
Standby mode, press and
release READ/ENTER
" " blinks until stable,
then displays measured value

Troubleshooting Guide

The T-100 turbidimeter routinely performs self-diagnostics, and
will automatically generate messages to provide you with specifi c
diagnostic information.
Message Description
Calibration Error. The meter is
unable to recognize the 800
NTU Calibration Standard.
Calibration Error. The meter is
unable to recognize the 100
NTU Calibration Standard.
Calibration Error. The meter is
unable to recognize the 20.0
NTU Calibration Standard.
Calibration Error. The meter is
unable to recognize the 0.02
NTU Calibration Standard.
General Calibration Error.
There is not suffi cient signal
to achieve the appropriate
resolution.
Excessive stray light detected.
Lamp Failure.
"Over Range"; value is above
maximum measurement range.
Low battery indication. The
batteries need to be replaced.
Routine Maintenance and Care
The supplied carrying case is optimal for protecting the instrument.
If you do not plan on leaving the instrument in the supplied carrying
case, when not in use, ensure that the instrument has been turned off
and that a clean sample vial fi tted with a black cap has been placed in
the sample well. This will ensure that a minimal amount of dust and/or
debris will be able to settle on the optics of the instrument.
Proper measurement of the turbidity of a sample requires the use
of a vial that is free of marks, smudges, scratches and bacterial
growth. Sample vials must be handled with absolute care to
avoid contamination or damage, which might change the optical
characteristics of the glass. Scratches, fi ngerprints, and water droplets
on the sample vial or inside the sample well can cause stray light
interference leading to inaccurate readings.
Cleaning the vial is accomplished by washing the interior and exterior
of the vial in a detergent solution. Once cleaned, the vial should be
rinsed thoroughly 8 to 10 times with clean distilled water to eliminate
the possibility of detergent buildup and streaking.
Vials can also be acid washed periodically and coated with a special
silicone oil to fi ll small scratches and mask the imperfections in the
glass. Since the silicone oil required for this application should have
the same refractive characteristics as glass, it is recommended
that the oil be obtained from us. Care should be taken not to apply
excessive oil that could attract dirt or contaminate the sample well
of the meter. Once the oil has been applied to the vial, the excess
oil should be removed with a lint-free cloth. The result should be a
sample vial surface with a dry appearance, but with all imperfections
fi lled with oil.
Sample vials should always be handled from the top or by the cap
to avoid fi ngerprints or smudges. After a vial has been fi lled with
a sample and capped, the outside surface should be wiped with a
clean, lint-free absorbent cloth until it is dry. Cleaned and dried vials
should be stored with the black caps on. The vials can be stored in the
carrying case. During normal operation you may use any typical glass
cleaner along with a lint free cloth or tissue (Kimwipes
outside of the vials.
Condensation may appear on the vial when your sample is very cold
and the relative air humidity is high. When this happens, the turbidity
that you read may be higher than the actual turbidity due to the light
scattered by the condensate on the vial. To alleviate this problem,
coat the vial with an anti-fogging agent, or by running warm water
over the vial for a short period of time to warm the sample prior
to measurement.
Intended Use, Maintenance & Precautions
Corrective Actions
This instrument is designed for turbidity measurement of water-based
Check or replace the
solutions. For routine maintenance dust or wipe the display using a damp
800 NTU calibration
cloth. If necessary, warm water or a mild water based detergent can be
standard.
used. Immediately remove any spilled substance from contact with the
meter using the proper cleaning procedure for the type of spill.
Check or replace the
• Do not use this equipment in potentially explosive atmospheres.
100 NTU calibration
• Ensure that no liquid enters the instrument.
standard.
• Do not use any aggressive cleaning chemicals (solvents or similar
Check or replace the
agents).
20.0 NTU calibration
• There are no user serviceable parts inside. Attempts to service internal
standard.
parts may void the warranty.
• Not intended for medical applications or patient use.
Check or replace the
• WARNING: No modifi cation of this equipment is allowed.
0.02 NTU calibration
standard.
Instrument Operating Conditions
Operating Ambient Temp.
Perform recalibration
with all (4) standards. Operating Relative
Humidity
Storage Temp.
Ensure the vial is
properly seated in the
Storage Relative Humidity
sample well. Use light
shield cover.
Pollution
Return unit.
Overvoltage
Weight
Dilute sample.
Size (L x W x H)
Replace batteries.
Battery Requirement
Vibration
Shock
Certifi cations/Compliance
Ordering Information
35635-00
35635-05
35635-52
35653-55
00159II
00131SH /
32X366401
67X357201
09376-00
), to clean the
®
Oakton Instruments
625 East Bunker Court, Vernon Hills, IL, 60061, USA
Tel: 1-888-462-5866 • Fax: 1-847-247-2984
info@4oakton.com • www.4oakton.com
0 to 50 ºC
0 to 90 %, non-condensing
at 30 ºC
-20 to +60 ºC (instrument only)
0 to 90 %, non-condensing
at 30 ºC
Degree 2
Category II
200 g
15.5 x 6.8 x 4.6 cm
4 x AAA (LR03) 1.5 V batteries
Shipping/handling per ISTA #1A
Drop test in packaging per ISTA #1A
FCC part 15 class A, TUV 3 in 1,
CE, RoHS
Waterproof T-100 handheld turbidimeter
with set of 4 calibration standards (800, 100,
20.0 & 0.02 NTU), sample vials, lint-free cloth,
silicone oil, batteries, and hard carrying case
Waterproof T-100 handheld turbidimeter,
sample vials, lint-free cloth, silicone oil,
batteries, and hard carrying case
Calibration kit set – standard solutions (0.02,
20.0, 100, 800 NTU) 60 mL each and (4) vials
Pack of 3 sample vials
Silicone oil (10 mL)
Replacement light shield cover
Replacement cloth
AAA batteries 12/pack
68X357701 08/15 Rev10