Extech instruments PH220 User Manual

User’s Guide

Waterproof Palm pH Meter

Model PH220

Introduction

Congratulations on your purchase of the Extech PH220 waterproof pH/mV meter. This microprocessor-based device with tactile buttons is battery operated and ideal for field use. The PH220 simultaneously displays pH or ORP (mV) and temperature. The rubber holster which protects the meter has a magnetic backing for convenient mounting. Careful use of this meter will provide years of reliable service.

Specifications

Range (Resolution)

Accuracy

mV (ORP)

± 1999 mV DC (1 mV)

± 2mV

Temperature

32.0 to 212.0oF (0.0 to 99.9oC)

± 0.5oF (0.3oC)

pH

0.00 to 14.00pH (0.01pH)

± 0.02pH

Temperature Compensation

32 to 212oF (0-100oC) Automatic (ATC)

Power

9 volt battery

Display

Dual LCD display for simultaneous pH or mV and

temperature readings

Over-range or open indication

Displays " ---- " for over-range or open input

pH Calibration points

4.00, 7.00, 10.00

Auto Power OFF

After 10 minutes

Low Battery Indication

The

icon displays no fill bars

Dimensions / Weight

4.25 x 3.00 x 1.18" (108 x 75 x 30mm) / 0.3 lbs (135g)

Accessories supplied with kit

Sample buffers, and battery.

Stick electrode for model PH220-S

Electrode with 39” cable for model PH220-C

2

Model PH220 Version 2.0

4/05

Meter Description

1.Battery Compartment (under holster)

2.Rubber Holster

3. LCD Display

4.Function buttons

5. Electrode input

Display Description

3

Model PH220 Version 2.0

4/05