YSI 60 - Manual (Page 15)

4.3 Making Measurements
After the system has been set-up and pH has been calibrated as described in 4.2 Calibration, it is
ready to make measurements. Simply insert the probe into the sample, shake gently to remove
any trapped air bubbles and wait for the readings to stabilize (approximately 60 seconds). The
first reading after storage in buffers may take longer to stabilize (5 to 10 minutes), therefore, the
probe should be stored in the transport chamber when making field measurements. It is
important that the probe be inserted into the sample far enough so that both the pH sensor and
temperature sensor are covered by the liquid (see Figure 5 on page 7).
The Model 60 has three modes:
¾ pH --
Displays pH and temperature (°C)
¾ Recall -- Allows previously stored data to be displayed.
¾ Erase all -- Allows ALL previously stored data to be deleted.
To change between the Model 60 modes, simply press and release the MODE key. The Model
60 will cycle through the modes as follows:
pH and
Temperature °C
Recall Erase all
NOTE: When the Model 60 is first turned on, it is in the pH mode.
4.4 Saving Data
The Model 60 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 and temperature. The Model 60 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.
SAVE
01
Site identity
While pH is displayed on the screen, press the ENTER key and hold it for approximately 2
seconds. The meter will flash SAVE on the display along with the current site identity (1
through 50) being used.
When all 50 sites are full, the display will flash FULL on the screen. This message will remain
on the screen (even after power down) until a key is pushed.
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