General Introduction; Initial Inspection; The Instrument; Battery Installation - VWR pH110 Bedienungsanleitung

GENERAL INTRODUCTION

The VWR pH110 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 instrument is waterproof (IP67) when the connector cap is installed. 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 pH110 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 VWR pH110 is available with pH, mV, ORP and ATC (Automatic Temperature
Compensation) probes. Other features include electrode offset recognition, electrode slope
recognition, electrode efficiency display, auto buffer recognition, built-in buffer coefficients,
automatic or manual temperature compensation, long battery life, 50 data set memory, 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 VWR 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
cable connected, follow these steps immediately:
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 VWR 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.
1
Figure 1.
Battery Installation