YSI 63 - Manual (Page 7)

You may also want to take the instrument into a dark location and, with the instrument ON, hold
down the LIGHT key. The instrument back-light should illuminate the LCD so that the display
can be easily read.
2.4 Transport Chamber
The Model 63 has a convenient transport chamber built into the instrument’s side. This chamber
provides a storage area and protection for the probe while transporting the system in the field.
Insert the round sponge (provided with the Model 63) into the bottom of the chamber. Put 6-8
drops of tap water into the sponge. The wet sponge creates a humid environment for the pH
sensor to prevent it from drying out during transport in the field (up to one week). The transport
chamber is NOT intended for long term storage of the pH sensor. See 6.3 pH Sensor Storage.
Probe transport
chamber
Figure 2
2.5 Hand Strap
The hand strap (see Figure 1 on previous page) is designed to allow comfortable operation of the
Model 63 with minimum effort. If the hand strap is adjusted correctly, it is unlikely that the
instrument will be easily dropped or bumped from your hand.
To adjust the hand strap on the back of the meter, unsnap the vinyl cover and pull the two Velcro
strips apart. Place your hand between the meter and the strap and adjust the strap length so that
your hand is snugly held in place. Press the two Velcro strips back together and snap the vinyl
cover back into place.
2.6 The Meter Case
The meter case is sealed at the factory and is not intended to be opened, except by authorized
service technicians. Do not attempt to separate the two halves of the meter case as this may
damage the instrument, break the water-resistant seal and may void the manufacturer's
warranty.
2.7 Calibration Vessels
To do a calibration you will need a plastic 100 mL graduated cylinder. A plastic container is
provide with the Model 63. The graduated cylinder provides a convenient place to calibrate the
pH sensor minimizing the amount of solution needed. The plastic container can be used as a
conductivity calibration vessel or filled with distilled water and used as a rinse vessel while in
the field. See section 4.2 pH Calibration and section 4.3 Conductivity Calibration for details.
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