SECTION 1
INTRODUCTION
1.1 INSTRUMENT DESCRIPTION
The Model 3345 Ion Meter is a highly sophisticated product offering a host of valuable features, but retaining
simplicity of operation.
The structured menus allow easy access to features with single key strokes. On-line help is provided to
explain instrument functions and provide diagnostic information.
Important measurement features include the ability to operate both channels completely independently,
simultaneous display of readings and temperature on both channels, and independent indication of stable
readings. Details of the last calibration for each sensor are provided and all logged results and calibration
routines are date and time stamped, thus satisfying the requirements of Good Laboratory Practice (GLP)
quality assurance protocols.
The units will store up to 100 readings which can subsequently be recalled onto the instrument display or
downloaded to a printer or PC via the bi-directional RS232 link. User programmable options include the
ability to print out current readings or prompt calibration at pre-determined intervals and the setting of alarm
points which are activated when the measured parameters will fall outside the preset limits.
The Model 3345 offers additional flexibility with two additional modes of ion analysis - Known addition/
subtraction mode for the determination of ion concentration closer to the lower detection limit of the electrode,
and multiple Sample addition/subtraction allowing measurement in dense and concentrated matrices.
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