SGS SLTD 100 Salinity User manual
Thank you for choosing the SGS Instruments SLTD 100 Salinity / TDS /
Temperature meter. This manual will provide you the necessary information
for correct operation. Please read it carefully before using the meter. SGS
Instruments cannot accept any responsibility for damage or malfunction of
the sensor due to improper use. The information in this manual is subject
to change, without notice, as improvements or additions to the product are
made by SGS Instruments.
If you need additional technical information or have questions about
the SLTD 100, please contact the SGS Instruments Tech Support
department, by telephone Monday through Friday 7:30 AM to 3:00 PM
Arizona Time at 1.866.972.7258, by fax at 1.480.557.0099 or by email at
Warranty
The SLTD 100 is warranted for two years against defects in workmanship
and materials when used for its intended purpose and maintained according
to instructions. This warranty is limited to repair or replacement free of
charge for the two year warranty period. Damages due to accident, misuse,
water penetration of the handheld enclosure, tampering or lack of prescribed
maintenance are not covered under this limited warranty.
If warranty service is required, you will need the date of purchase, serial
number and the nature of the failure when contacting SGS Instruments. If
the meter needs to be returned to SGS Instruments, rst obtain a Returned
Goods Authorization number from the SGS Customer Service / Tech Support
Department and then send the meter with the shipping costs prepaid. When
shipping the instrument, make sure it is properly packaged for complete
protection; include your contact information and a description of what is
wrong with your meter. If the repair is not covered by the warranty, you
will be notied of the cost to repair (or upgrade) the meter; conrmation is
needed prior to any repairs being made.
SLTD 100 Salinity / TDS / Temperature Meter
Instruction Manual
This limited warranty is the sole and complete warranty for SGS
Instruments, and shall be limited to the cost of the meter. In no
event shall SGS Instruments be liable for incidental or consequential
damages.
General Information
Each SLTD 100 consists of the handheld meter enclosure (with 2 Duracell
Copper Top AA batteries included, but not pre-installed) connected to the
Toroidal Sensor probe by a 4 foot cable (when the batteries need to be
replaced, use only AA Duracell Copper Top batteries; use of other brands
may void the warranty). Remove the instrument from the case and examine
carefully; if any damage has occurred during shipment, immediately notify
SGS Instruments.
The SLTD 100 is designed for continually measuring Salinity, Total Dissolved
Solids (TDS), and Temperature in aqueous solutions in accordance with the
technical information provided in this manual. This is accomplished through
our patented Toroidal technology, which insures precise readings without the
need for the user to ever calibrate the meter.
Operation
Press the power button to turn the meter on. For taking measurements, once
the power is on (the unit starts in Salt mode), submerge the probe into the
solution being tested. In order to get a reading, the entire black capsule in
the top of the probe needs to be submerged. Pressing the mode button will
move the display through all ve modes (Salt, TDS, Net TDS, Temperature
in Fahrenheit and Celsius).
1. Salt Mode: When the Salt light is illuminated, the meter is reading
the salinity in Parts per Million (PPM). Due to the sensitivity of the meter,
movements of the probe in solution may cause the reading to vary, depending
on the ow of the water and the temperature.In a solution of less than 500
PPM salinity (TDS 625 PPM), the meter will read zero.
2. TDS Mode: When the meter is in “TDS” mode, the indicator light on
the meter enclosure will be solid. At start up, the SLTD 100 will revert to
the last mode measured in its previous use. TDS (Total Dissolved Solids)
is an extrapolated number, based on the conductivity of the water. The
conductivity of the water changes with temperature and as solids are added.
It is important to monitor the hardness of pool water, as well as salts. Liquid
chlorine contains salt, and over time this salt can build up to levels that need
to be managed. The TDS reading will help in managing these chemical
levels, but is not the only valid test that should be used. In low conductivity
solutions where the TDS is less than 625 PPM, the SLTD 100 will read
zero.
3. “Net TDS”TM Mode: The “NET TDS”TM mode is accessed when the
meter is in TDS mode, by pressing the mode button for three seconds. When
the mode button is released, a ashing TDS light indicates that “NET TDS”TM
is being displayed. “NET TDS”TM is an extrapolation of data, designed
specically for the pool industry to reect the “TOTAL TDS” of a saltwater
pool less the Salinity. To return the reading to the normal TDS mode, press
the mode button for three seconds and release; the TDS light will be solid.
4. Temperature Modes: Provides an accurate measurement of
water temperature; when the temperature light is solid, the meter reading
is in Fahrenheit. To change the reading to Celsius, when in temperature
mode hold the mode button for three seconds. If the unit is powered off,
the temperature reading will stay in the mode measured in its last use. The
SLTD 100 will accurately display the temperature at all readings from 32 to
140 degrees Fahrenheit (0 to 60 degrees Celsius).
To turn the meter off, press the power button for 2 seconds. To conserve
battery life, if the meter is left powered on, but you are done using it, the
system will remain active for 60 seconds and then automatically turn
off. Battery life on Duracell Coppertop batteries is estimated at 80 hours
of operation, although storage temperature and other factors can affect
longevity.
Toroidal Conductivity Maintenance
The SLTD 100 probe sensor needs minimal maintenance. To clean the
sensor, located in the black capsule at the top of the probe section of the
SLTD 100:
1. Under normal conditions, with the SLTD 100 powered off at the end of
the day, maintenance is accomplished with simple rinsing of the probe in tap
water. This can also be accomplished by swirling the probe in a bucket of
clean (tap) water.
2. If there is debris or buildup on the probe and/or in the sensor, rinse with
warm water to remove any deposits. Soak the sensor in a container of hot
water for 1 hour, again making sure that the unit is powered off. Use a soft
bristled brush (such as a toothbrush) or Q tip, and hot soapy water to scrub
the entire probe sensor body. Do not use a brush that is abrasive or that can
scratch the interior of the toroid capsule.
3. The hand held enclosure should be carefully cleaned periodically with a
damp paper towel or sponge.
Battery Care Instructions – Use only Duracell
Coppertop AA Batteries
1. Keep battery contact surfaces and battery compartment contacts clean
by rubbing them with a clean pencil eraser or a rough cloth each time you
replace the batteries.
2. Remove batteries from the meter when it is not expected to be in use for
more than a month.
3. Make sure that you insert batteries into your SLTD 100 properly, with the
+ (plus) and – (minus) terminals aligned correctly.
4. Extreme temperatures reduce battery performance. Avoid putting
battery-powered devices in very warm places.
Safety Information
SGS Instruments Meters are designed for years of service; please observe
the following safety precautions. When changing the batteries, make sure
that all seals on the meter box are properly reinstalled. The product is
designed for continuous use in industrial process applications and complies
with safety regulations currently in place. Improper use could lead to
hazards for the user or a third party, and/or adverse effects to its operator.
The probe portion of the system is 100 % waterproof. Although the handheld
display portion of the meter is IP67 water resistant, it is not designed
or intended to be submerged. If dropped into the water, remove
immediately by pulling the probe cord to retrieve it and dry off. Do not
use the meter until the handheld portion is completely dry (which may take
more than 24 hours).
Any other use, or use not mentioned herein, that is incompatible with the
technical specications is deemed inappropriate. The operator is solely
responsible for any damage arising from such use. When using the SLTD
100:
• Observe all applicable local and federal safety regulations.
• Take proper precautions with prescribed environmental and operational
conditions.
• Consider chemical compatibility with all wetted materials.
Certication
NSF International has certied the meter for accuracy. The water conditions
of a typical pool were simulated and tests performed to determine the
accuracy of the SLTD 100. Please note that extreme water conditions
(temperature under 58 degrees F and over 105 degrees F) may cause
accuracy to vary outside the + or – 2 % of scale readings.
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