Myron L 512T5D User Manual

PoolMeter

A

Model 512T5D

Operation Manual

05 July 09

™

ACCURACY • RELIABILITY • SIMPLICITY

Water Quality Instrumentation

ccuracy • Reliability • Simplicity

DESCRIPTION

This manual describes your Myron L 512T5D “Dual” Range
PoolMeter™, tells you how to use it, and tells you how to keep it
working accurately for many years.

Your PoolMeter is a compact instrument that operates on
the principal of electrical conductivity. It will quickly determine
the ppm/Total Dissolved Solids of almost any solution. The
PoolMeter converts electrical conductivity directly into parts
per million (ppm) of Total Dissolved Solids (TDS) AND ppm of
Minerals (Sodium Chloride/NaCl).

It is 85 x 129 x 126 mm/3.4 x 4.5 x 4.0 in. and weighs less
than 0,45 kg/1 lb. The PoolMeter is completely self-contained.
The built-in cell is automatically temperature compensated to
25°C/77°F when measuring within the range of 10° to 71°C/50°
to 160°F. It is powered by a 9 volt battery that lasts for at least
2000 tests (or one-year shelf life).

SCALE

512T5D 0-5000 ppm of TDS
0-5000 ppm of NaCl

3. Select the desired range: T for TDS or N for NaCI.
S is the Internal Standard and is for fi eld calibration only. (See
bottom label for value.)

4. Press the black button.

5. Read the dial value indicated by the pointer to determine
parts per million (ppm), Total Dissolved Solids (TDS) or
Minerals.

6. If the pointer goes off the scale to the right, try Range
Doubling (see FIELD CALIBRATION) or an RE-10 Range
Extender (see ACCESSORIES).

NOTE:

When you are fi nished using the meter, RINSE THE CELL

CUP with clean water, preferably distilled or deionized.

TEMPERATURE COMPENSATION

For very hot or very cold solutions, let the three rinse

samples each remain in the cell cup for several seconds.
Then immediately fi ll the cell cup with the sample you want
to test (step 2 above). This allows the automatic temperature
compensation feature time to work properly.

By using an RE-10 Range Extender (see ACCESSORIES),

the maximum range may be increased ten times.

The pictures in this manual show the major operating parts
of your Myron L PoolMeter. Handle your instrument and identify
these parts to become familiar with it.

CAUTION

DO NOT use with samples hotter than 71°C/160°F. The

readings WILL NOT be accurate.

DO NOT splash solvents such as lacquer thinner, acetone,

benzene or chlorinated solvents on the plastic case.

DO NOT fi x or modify the meter. This will void the warranty.

See SERVICE for details or consult the Myron L Company.

DO NOT DIP THE INSTRUMENT INTO WATER. If water
does get inside the instrument, see MAINTENANCE for
instructions on how to dry it properly.

Selector Switch

S = Internal Standard; T = TDS; N = NaCl

USING YOUR METER

1. Rinse the cell cup three times with the sample you wish to
test. (For very hot or very cold samples see TEMPERATURE
COMPENSATION.)

NEVER FILL THE CELL CUP BY DIPPING THE METER INTO
WATER!

2. Fill the cell cup with another sample to at least 1/4”/6.35 mm
above the upper electrode.

CALIBRATION

STANDARD SOLUTIONS: A Standard Solution has a known

conductivity and ppm. Your meter was calibrated at the factory
using a Standard Solution. You can keep your meter accurate
by using the same Standard Solution. To pick the right Standard
Solution for your PoolMeter, see ACCESSORIES.

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