YSI 63 - Manual (Page 18)

3.03
µS
Flashing °C symbol
indicates Specific
Conductance
23.8
°C
14
If the instrument is reading Specific Conductance, the large numbers on the display will be
followed by either a
µS or an mS. Additionally, the small portion of the display will show the o
C flashing on and off.
If the instrument is reading Salinity, the large numbers on the display will be followed by a ppt.
32.3
ppt
24.8
°C
4.5 Autoranging & Range Searching
The YSI Model 63 is an autoranging instrument. This means that regardless of the conductivity
or salinity of the solution (within the specifications of the instrument) all you need to do to get
the most accurate reading is to put the probe in the sample. This feature makes the Model 63 as
simple as possible to operate.
When you first place the Model 63 probe into a sample or calibration solution, and again when
you first remove the probe the instrument will go into a range search mode that may take as long
as 5 seconds. During some range searches the instrument display will flash rANG to indicate its
movement from one range to another. The length of the range search depends on the number of
ranges which must be searched in order to find the correct range for the sample. During the
range search, the instrument will appear to freeze on a given reading for a few seconds then,
once the range is located, will pinpoint the exact reading on the display. The display may also
switch to 00.0 for a second or two during a range search before it selects the proper range.
4.6 Saving Data
The Model 63 is equipped with non-volatile memory that is capable of storing up to 50 different
sets of readings. Non-volatile means that you do not need to worry that your data will be lost due
to a power failure or interruption, such as when the batteries are removed. Each set consists of
pH, conductivity, specific conductance, salinity and temperature. The Model 63 will also assign
a site identity number to each set of readings to allow easy review of the data. This feature is
useful in situations where transcribing data is difficult or not available.