Myron L 532M1 - Manual (Page 2)

1. Turn the Range Switch to the desired range. If you don’t
know which range to use, set it to 1000.
2. Rinse the cell cup three times with the sample you want
to test. (For very hot or very cold samples see
TEMpERATuRE CoMpEnSATIon below.)
never fill the cell by dipping the meter into
water!
3. Fill the cell with another sample to at least 1/4” (6mm)
above the upper electrode.
4. press the black button.
5. Read the dial value indicated by the pointer. If the
pointer is very low on the left or goes off the scale to the
right, try the next lower or higher range.
6. Multiply the dial value by the range setting to determine
parts per million (ppm) Total Dissolved Solids on the
532T models or the conductivity in micromhos (µmhos)
on the 532M1.
7. If the pointer goes off the scale to the right on the x1000
range, try RAngE DouBLIng (see inside) or an RE-10
Range Extender (see ACCESSoRIES).
note:
When you are finished with 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 for several seconds. Then immediately fill the cell
with the sample you want to test (step 3 above). This
allows the automatic temperature compensation feature
time to work properly.
caution
do not use with samples hotter than 160ºF (71ºC).
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 fix or modify the meter. That will void your
warranty. See SERvICE for details or consult Myron L
Company.
do not dip the instrument into water. If water
does get inside the instrument, see MAInTEnAnCE for
instructions on drying it.
standard solutions: A Standard Solution has a
known conductivity and ppm. Your meter was calibrated at
the factory using nIST traceable Standard Solutions. You
can keep your meter accurate by using these same
Standard Solutions. To pick the right Standard Solution for
your meter see ACCESSoRIES.
checking calibration
1. Turn the Range Switch to the x1000 range.
2. Test a sample of appropriate Standard Solution.
caution: Throw the Standard Solution away as you use
it. Don’t put the used samples back in the bottle.
3. If the DS Meter does not indicate the same value as is
on the Standard Solution bottle’s label, first clean the
cell. For directions on how to do this see CELL inside.
Rinse the cell thoroughly and test the Standard Solution
again. If the DS Meter still does not indicate the correct
value, recalibrate it as described below.
to recalibrate the meter
1. Remove the bottom cover using fingernails or a small
screwdriver to loosen the front or rear edge. Identify the
three Calibration Controls (see photo below left) so you
can find them by touch while calibrating.
2. Test another sample of the Standard Solution (be
careful to not to splash solution inside the meter).
3. Adjust the Master Calibration Control until the meter
indicates the value that is on the Standard Solution
label.
4. The Master Calibration Control adjusts all ranges. For
best accuracy in the lower ranges, use the
recommended Standard Solutions for the x100 and x10
ranges. use the x100 and x10 trimmers to recalibrate
those ranges as in steps 2 and 3 above.
5. Turn the Range Switch to “S” and press the button.
Compare the meter reading to the InTERnAL
STAnDARD value on the meter’s bottom label. If they
are noticeably different, mark the new value in place of
the old one.
note:
A 532T (ppm) Meter may be calibrated to read either
442 or naCl parts per million, but not micromhos. A
532M1 (conductivity) Meter may only be set to read
micromhos.
internal standard: An InTERnAL STAnDARD value
for each meter is on the label on the bottom cover of each
meter. use it between normal calibrations as a field check
of your meter’s accuracy.
To verify your meter’s calibration:
1. Turn the Range Switch to “S” and press the button.
2. If the reading matches the InTERnAL STAnDARD value
on the bottom label, your meter is in calibration. If not,
see FIELD CALIBRATIon.
note:
The feature described above is intended as a quick field
calibration check, or for using the range doubling
technique. It is not a replacement for calibration with
Standard Solution.
using your meter calibration
Battery Strap
Master Calibration Control (X1000)
Lower Electrode
(inside cell)
X100
Trimmer
X10
Trimmer