Meter Description; Order Of Operations - Extech Instruments PH220A User Manual

Meter Description

1. Battery Compartment (under holster)
2. Rubber Holster
3. LCD Display
4. Function buttons
5. Electrode input
Basic Display Description
1. Measurement value
2. Battery status
3. Units of measure
4. Temperature units
5. Solution temperature
Note that there are other more specialized displays that appear on the LCD that have not
been included in this basic operation display description. Other display icons are used and
are discussed in the appropriate sections of this manual.

Order of Operations

1. Calibrate the instrument as described later in this manual.
2. Determine the test type (pH or ORP) and carefully follow the directions for the desired
test.
3. Configure the meter to display in the desired units of measure for temperature (
o
F). This is included as a step in the pH measurement instructions.
4. Pay close attention to detail, step by step instructions, and electrode cleaning/rinsing
recommendations. Slight deviations in test procedures and test habits can have a
significant effect on test results.
1
2
3
4
5
1
2
5
3 Model PH220 Version 3.1 11/2005
7.00
o
C or
3
4