Myron L D-6 - Manual (Page 8)

II. INTrODuCTION
Thank you for selecting the Dialysate Meter™, one of the Myron L
Company’s latest in an increasing line of instruments utilizing
microprocessor-based circuitry and SMT manufacturing processes. This
circuitry makes the instrument accurate, reliable and very easy to use.
The Dialysate Meter incorporates several high performance features
including ORP mV to ppm free chlorine conversion, optional wireless
communication, a clock with time and date, memory of up to 100
locations with time and date stamp, the ability of the user to adjust the
timeout “Auto OFF”, and enhanced performance. See Features and
Specifications on pages 6 & 7.
The most exciting feature is data logging with the ability to download the
memory or stored test data with its corresponding time and date using
an optional wireless com port accessory package. Software included
with this accessory package allows the user to create spreadsheets and
graphs with ease, and quickly and accurately manipulate data. Please
Note: Although the Myron L Company has performed extensive testing, we
cannot guarantee compatibility of all applications and formats. We suggest
testing your application and format for compatibility before relying on it.
Special note: Conductivity, Resistivity, and TDS require mathematical
correction to 25°C values. On the left of the Dialysate Meter’s liquid crystal
display is shown an indicator of the salt solution characteristic used to
model temperature compensation of conductivity and its TDS conversion.
The indicator may be KCl, NaCl or 442™. Selection affects the temperature
correction of Conductivity, and thus the calculation of TDS from compensated
conductivity. The selection can affect the reported conductivity of hot or cold
solutions and will change the reported TDS of a solution.
In hemodialysis facilities, using NaCl for Conductivity and Resistivity
and 442 (Natural Water characteristic) for TDS will meet water testing
requirements most of the time. This assumes that Conductivity will be
used to determine concentration of dialysate solutions and that Resistivity
will be used to determine the purity of DI water given both dialysate and DI
product water most closely match the NaCl standard. This also assumes
that TDS will be used to check reverse osmosis feed and product water,
which most closely match the Natural Water characteristic. This is how
your instrument, as shipped from the factory, is set to operate. However,
the compensation and conversion solution type can be changed to
another programmed solution characteristic when appropriate.
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