Extech PH150-C Operating Manual

User Guide

ExStik

Model PH150-C

Concrete pH Kit

HOLD

150

ExStikTM Description

Front Panel Controls

1. Battery compartment cap

2. LCD Display

3. MODE / HOLD button

4. CAL / RECALL button

5. ON/OFF button

6. Electrode collar

7. Electrode (Electrode cap is not shown)

Display

1. Bargraph reading

2. Measurement reading

3. BAT (low battery) indicator and pH unit of measure

4. Temperature display

5. Bargraph scale designations

6. Calibration indicators

7. RENEW and HOLD indicators

Cable and Probe Guard

1. PH150

2. O-Ring

3. Retaining nut

4. Extension cable

5. Retaining nut

6. Probe guard

7. Probe

8. O-Ring

MLH

BAT

RENEW

HOLD

3 4

PH150

LMH

HOLD

O-Ring

PH150-C V2.1 07/09

Introduction

Congratulations on your purchase of the ExStik® PH150-C Concrete pH Kit. The PH150-C is designed for pH and temperature measurements on concrete. The flat surface electrode provides fast and easy measurements. The 3 ft extension cable and probe guard/weighted base simplify measurements on flat concrete surfaces. The PH150-C, with careful use and maintenance, will provide years of reliable service.

Overview

Getting Started

• Remove the cap from the bottom of the ExStikTM to expose the electrode glass surface and reference junction

• Before first use or after extended storage, soak the electrode (with its cap removed) in a pH 4 solution for about 10 minutes

• White KCL crystals may be present in the cap. These crystals will dissolve in the soak or they can be simply rinsed with tap water

• Always calibrate close to the expected measurement value

• A sponge is located in the electrode protective cap. Keep this sponge soaked with a pH 4

solution to preserve Electrode life during storage

Replacing Electrodes

The ExStikTM is shipped with an electrode attached. Electrode life is limited and is dependent on (among other factors) frequency of use and care. If the electrode needs to be replaced, follow these steps for removing and connecting electrodes.

1. To remove an electrode, unscrew and completely remove the electrode retaining collar.

2. Gently rock the electrode from side to side, pulling it away from the meter, until it disconnects.

3. To attach an electrode, carefully plug the electrode into the meter socket (note that the electrode connector is keyed, ensuring proper connection).

4. Secure the electrode in place by tightly turning the collar in place. (a rubber O-ring gasket seals the electrode with the meter).

Cable and Guard Installation Instructions:

1. To remove the electrode, turn the instrument OFF and then unscrew the electrode retaining nut, and remove it (turn counter-clockwise to remove).

2. Gently rock the electrode from side to side, pulling it away from the meter until it disconnects from the meter.

3. Attach the electrode to the cable by aligning the slots and pins, and carefully plugging the electrode into the cable socket. Be sure the O-Ring is between the probe shoulder and the threaded end of the cable connecter (see diagram).

4. Tighten the electrode retaining nut firmly to seal the electrode to the cable. Do not overtighten.

5. Attach the meter to the other end of the cable, using the same procedure as described in steps (3.) and (4.).

Note: The guard is not designed to be used without the cable. The cable can be used without the guard if desired.

PH150-C V2.1 07/09

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