YSI EcoSense pH100 - Manual (Page 4)

GENERAL INTRODUCTION
The model pH100 is one of three instruments in the EcoSense product line from YSI. The
pH100 is a precision tool that measures pH, mV and temperature. A built-in microprocessor
stores, calculates and compensates for all parameters related to pH determinations including pH
electrode temperature characteristics, electrode slope deviations and buffer solutions.
This unit has a splash-proof IP65 case. The mechanical touch keys are highly reliable with
tactile and audio feedback. This meter uses one 9V battery. Re-calibration is not required when
power is restored.
The front of the meter has a large LCD that displays pH or mV and temperature simultaneously
along with user prompts and mode indicators. The unit prompts the user through calibration and
measurement procedures.
An AUTOLOCK feature for both pH and mV measurements enables the unit to automatically
sense the end point and "lock" the display to indicate the end point value of a measurement. The
pH100 can also be used in non-AUTOLOCK mode. AUTOLOCK and user prompts help
eliminate most errors in determining pH and mV values, resulting in precise, repeatable, error-
free measurements.
The model pH100 is available with pH, mV, ORP and ATC (Automatic Temperature
Compensation) probes. Other features include electrode offset recognition, electrode slope
recognition, electrode efficiency display, built-in buffer coefficients, automatic or manual
temperature compensation, long battery life, and 50/60 Hz AC noise rejection. This meter is
universal, 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.
SPLASH RESISTANCE
Though the pH100 meter is housed in a watertight case, DO NOT use it underwater. The splash-
resistant case prevents permanent damage to the unit if accidentally dropped into non-corrosive
solutions. Follow these steps immediately if the unit is immersed in any solution:
1. 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 and 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.
Figure 1.
Battery Installation
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