YSI EC300A - Manual (Page 5)

3
GENERAL INTRODUCTION
The EC300A is a precision tool that measures conductivity, salinity and temperature. A built-in
microprocessor calculates and compensates for all parameters related to conductivity and
temperature determinations.
This instrument is waterproof (IP67) when the connector cap is installed. The mechanical
touch keys are highly reliable with tactile and audio feedback. This instrument uses one 9V
battery. Re-calibration is not required when power is restored.
The front of the instrument has a large LCD that displays temperature and either temperature
compensated or non-temperature compensated conductivity, salinity or TDS simultaneously
along with user prompts and mode indicators. The unit prompts users through calibration
and measurement procedures.
The model EC300A is available with a single four-electrode cell. Other features include
automatic conductivity ranging, automatic temperature compensation, long battery life, and
50/60 Hz AC noise rejection. This meter is universal and user-friendly for field, industrial and
laboratory applications.
INITIAL INSPECTION
Carefully unpack the unit and accessories, and inspect for shipping damages. Compare
received parts with materials listed on the packing list. Notify YSI immediately of any damage
or missing parts. Save all packing materials until satisfactory operation is confirmed.
THE INSTRUMENT
Though the instrument is housed in a water-proof IP67 case, DO NOT use it underwater. The
connector is not waterproof unless the cap is installed. In case of submersion without the cap
connected, follow these steps immediately:
1. Dry the connector if necessary, and replace the conductivity probe. Rinse unit carefully
with distilled water. After rinsing and drying, inspect and clean connectors to remove all
contaminants that may affect probe connections.
2. Wait for the unit and probe to dry completely before resuming operation.
3. If the unit does not function correctly after steps 1 and 2, call YSI for possible repair or
replacement (see Warranty).
BATTERY INSTALLATION
An initial display of “BAT” on the LCD indicates
approximately one hour of battery life for unit operation
within specifications. Replace battery when “BAT” appears
on the LCD. (See Figure 1.)
To replace battery, remove the two battery cover screws,
battery cover and o-ring. Replace the 9V battery. Replace
battery cover and o-ring (align the o-ring properly to insure
a good seal) and fasten the two battery cover screws for the
splash-resistant feature.
Battery Disposal
This instrument is powered by a 9 volt battery, which the user must remove and dispose of
when the batteries no longer power the instrument. Disposal requirements vary by country
and region, and users are expected to understand and follow the battery disposal
requirements for their specific locale.
Figure 1.
Battery Installation