Myron L D-2 - Manual (Page 4)

CALIBRATION/ACCESSORIES
STANDARD SOLUTION: Myron L Company Standard Solution has
a known conductivity and concentration of Sodium Chloride (NaCI).
Your Dialysate meter was calibrated at the factory using our 14.0
millimhos (7.86 grams per liter NaCI) Standard Solution. You can
keep your meter accurate by using this same Standard Solution.
CHECKING CALIBRATION:
1. Turn the Range Switch to the 0-20 range.
2. Test a sample of Myron L Company 14.0 millimhos 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 D-2 Meter does not indicate the 14.0 millimhos shown on
the Standard Solution bottle's label, first clean the cell. For
directions on how to do this, see CELL CUP opposite. Rinse the
cell thoroughly and test the Standard Solution again. If the D-2
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 Calibration Control
(see photo below) so you can find it by touch while calibrating.
2. Test another sample of the Standard Solution (be careful to not
splash solution inside the meter).
3. Adjust the Calibration Control until the meter pointer indicates
14.0.
METER ZERO ADJUST
1. Set the meter on a flat surface. The pointer should rest exactly at
the ZERO mark at the far left of the dial.
2. If it doesn't, use a small screwdriver to rotate the plastic screw
below the dial (see DESCRIPTION). Adjust the pointer until it
exactly indicates zero.
ACCESSORIES
STANDARD SOLUTION
Your D-2 Meter has been factory calibrated with Myron L
type 14.0 millimhos Standard Solution. Myron L Company
Dialysis Standard Solution is made with delonized water and
reagent grade Sodium Chloride, and is within 1.0% of Sodium
Chloride reference solutions. Quart and gallon sizes are
available.
MAINTENANCE
BATTERY CHECK:
Model D-2 has a battery indicator glow light visible through the small
hole on the lower right-hand corner of the meter face plate. If this
Iight faiIs to glow when the black button is pressed, replace both
batteries.
BATTERY REPLACEMENT:
Detach the battery connectors. Pull on the plastic straps to remove
the batteries. Replace with fresh zinc carbon or alkaline 9 volt
batteries. Reinsert the plastic straps to secure batteries. Replace
the bottom cover.
CELL CUP:
Self-conditioning of the built-in electrodes occurs each time the button
is pressed with a sample in the cell cup. This ensures consistent
results each time. With some samples a small downward swing of
the pointer is a result of this conditioning action. This action is powerful
and removes normal films of oil and dirt. However, if samples are
allowed to dry in the cell cup, a film will build up. This film reduces
accuracy. When there are visible films of oil, dirt, or scale in the cell
cup or on the electrode, scrub them lightly with a small brush and
household cleanser. Thoroughly rinse out the cleanser, and the meter
is ready for accurate measurements.
SOLUTIONS INSIDE THE METER
Your Dialysate Meter is a rugged instrument and will withstand
dialysate exposure around its cell, meter movement, and switches.
However, care should be taken to keep solutions from leaking in
around the bottom cover. It is not sealed (to prevent condensation
from forming).
Large amounts of calibration solution or dialysate will almost
certainly damage the meter movement or electronics. Such meters
should be returned to the Myron L Company for repair.
If there are only a few drops inside the meter, dry it as follows:
1. Shake excess solution out of the inside of the meter.
2. Dab the exposed surfaces dry with an absorbent cloth or tissue.
Avoid pushing any liquid into the Calibration Control or switches.
3. Air dry the meter in a warm area with the bottom cover off. Allow
several hours for thorough drying.
If the dialysate entered through a leak in the case or cell, or if the
instrument shows erratic readings or other unusual behavior, return
it to the Myron L Company for service .
SERVICE
If your D-2 meter fails to operate properly:
1. Check the glow light to make sure the batteries are good.
2. Check the cell cup and electrodes to ensure they are clean. Any
contamination could alter the reading. See MAINTENANCE.
Any service required other than battery replacement, cleaning,
or calibration must be referred to the Myron L Company. When
returning an instrument, please pack it securely and enclose a
note specifying the problem. The plunger should be included,
but DO NOT ship with plunger in cell (damage could result).
IMPORTANT
The plunger enclosed with your Dialysate Meter has been
calibrated specifically for this instrument. If a different plunger is used,
the Dialysate Meter MUST BE RECALIBRATED with Standard
Solution. Make sure the plunger is completely seated in the cell cup.
ORDERING
To order accessories or instruments, contact your nearest stocking
distributor, or the Myron L Company.