Extech Instruments ExStik CL200 Manuale utente

User's Guide

ExStik®CL200

Waterproof Total Residual Chlorine Tester

Patent Pending

CL200 V6.0 06/052

Introduction

Congratulations on your purchase of the ExStik®CL200 chlorine tester.

The CL200 is a revolutionary first of its kind measurement device that

offers direct reading of Total Chlorine from 0.01 to 10.00 ppm. The

electrode method employed by the ExStik®is approved by the U.S.

Environmental Protection Agency (EPA) as an acceptable method for

wastewater compliance monitoring of total chlorine. For this type of

electrode method, a reagent tablet must be added to the measurement

solution before testing. The advantages of the CL200 to the user

include: Easy to use and maintain, high accuracy, self-calibration, and

fast response. The CL200 offers simultaneous Chlorine and

Temperature displays and a 15-reading memory storage. Careful use

and maintenance will provide years of reliable service.

Applications

The CL200 can be used wherever a measurement of the total chlorine

in water is needed. This is also referred to as total residual chlorine. It

measures the total of all chlorine present in all forms, including

dissolved free chlorine, chloramines, hyporchlorous acid and

hypochlorite ion. Typical applications include measurements of

discharge water from water treatment plants, public drinking water

supplies and cooling towers, and measurement of disinfectant

properties in swimming pools and cooling water applications.

CL200 V6.0 06/053

Meter Description

CL200 Front Panel Description

The ExStik’s®keys have functions which

change depending on the electrode

attached (pH, ORP or Chlorine). Key

descriptions here apply for the ExStik®with

a chlorine electrode attached.

1. Battery compartment

2. LCD Display

3. MODE/HOLD button (store data)

4. CAL/RECALL button (change temperature units

and recall data. Calibration not required

for chlorine)

5. ON/OFF button

6. Electrode Collar

7. Electrode

(Note: The Electrode cap is not shown)

ExStik®CL200 Display

1. Bargraph display

2. Measurement display

3. BAT (low battery) and

HOLD (data hold) indicators

4. Temperature display

5. Bargraph scale designations

6. Unit of measure

Accessories

•CL203 – ExTab®Reagent tablets (10-pack for 100 tests)

•CL205 – Spare chlorine electrode

•EX006 – Weighted base with 5 solution cups

•PH100 – pH Electrode

•RE300 – ORP Electrode

•EX007 – Solution cups (24 pack)

CL200 V6.0 06/054

Getting Started

Equipment Required

A chlorine test requires a 20ml sample cup, a reagent tablet and the

CL200 with a chlorine electrode attached. The optional EX006 Weighted

base is a recommended accessory.

Battery Activation

An insulating tab is located in the battery compartment and prevents

battery drain during storage. It must be removed before use. Refer to the

battery replacement paragraph in the maintenance section.

Measurement Procedure

Sample Preparation:

1. Place the test sample into the sample

cup up to the 20mL line.

2. Drop one reagent tablet into the

sample, wait 10 seconds and then

shake or stir vigorously until it is

dissolved.

Measurement:

1. Press the ON button and insert the electrode into

the sample.

2. Stir the sample with the electrode for 5 to 10

seconds. The “HOLD” indicator will appear after

120 seconds.

Reading:

The value in the display is the total chlorine in ppm.

Note: After running a test, wipe the entire electrode

with a clean/dry paper towel.

CL200 V6.0 06/055

Storing Readings

1. Press the MODE button to store a reading. The storage location

number will be displayed followed by the stored reading and the

“HOLD” indicator.

2. Only one reading can be stored during the 120 second measurement

cycle.

3. Press the MODE button again to return to normal operation.

4. If more than 15 readings are stored, previously stored readings

(starting with number 1) will be overwritten.

Recalling Stored Readings

1. Press the CAL button and then press the MODE button immediately

after CAL is displayed; a location number (1 through 15) will flash.

2. The last stored reading taken will be displayed first. To scroll through

the stored readings, press the MODE button. The location number is

displayed first, followed by the reading stored in that location.

3. To exit the storage mode, press the CAL button and the CL200 will

return to normal operation.

Note: If the batteries are removed all stored readings will be lost.

Changing the Temperature Units

Press and hold the CAL button for approx. 3 seconds to change the

temperature units.

Auto-Power OFF

The auto power off feature automatically shuts the CL200 off 10 minutes

after the last keypress.

Low Battery Indication

When the batteries become weak the “BAT” icon will appear in the

display. Refer to the Maintenance section for battery replacement

information.

CL200 V6.0 06/056

Considerations and Techniques

1. If the meter has not been used for several weeks or is new, at least

two tests should be made to condition the electrode.

2. Do not touch the reagent tablets. Touching can cause

contamination.

3. If the electrode has not been used for in a 24hr period, wipe the tip

with a clean/dry paper towel before use.

4. Before use, wash the sample cups and the caps and then rinse them

completely.

5. The CL200 should not be left in a solution while turned off. If left in

solution while turned off, subsequent readings may take longer to

reach the correct value.

6. Do not touch the sensor surface except with a clean/dry paper towel.

7. When measuring solutions that have large differences in chlorine

concentration, i.e. 0.1ppm and 5.0ppm, use separate sample cups.

8. Discard the sample cup when it shows a color change.

9. Maintain the electrode by completely wiping dry and then replacing

the electrode cover immediately after taking a measurement. The

electrode should always be stored in the dry cap.

10. Cover the connector with the clear cover whenever the electrode is

removed from the meter body.

11. Gently stirring the probe in the solution for 10 seconds, within the

first minute of operation, will accelerate the process and yield more

accurate readings. Do not stir after 10 seconds.

Troubleshooting Guide

1. If the unit appears locked it is possible that the Data Hold mode has

been inadvertently accessed. If the HOLD icon is displayed, simply

press the MODE button or turn the meter off and restart.

2. If the meter latches up and cannot be reactivated by a button press,

remove the batteries and restart. Note that if the batteries are

removed, any stored readings will be lost.

Electrodes Types

The CL200 can also measure ORP and pH. To perform these tests,

the appropriate electrode must be acquired and connected to the

ExStik®. When the unit is turned on, it recognizes the type of electrode

that is connected and displays the appropriate unit of measure.

CL200 V6.0 06/057

Maintenance

Battery Replacement

1. Twist off the battery compartment cap

2. Replace the four (4) CR2032 batteries observing polarity.

3. Replace the battery compartment cap

Cleaning and Maintaining the Electrode

The CL200 Chlorine Electrode arrives in a factory-cleaned condition and

is ready to be used. The electrode will perform best and yield more

stable readings after the first few tests. Before and after tests, firmly

wipe the electrode tip with a clean, dry paper towel to remove any

compounds that may have formed. When not in use, the CL200 should

be stored with the electrode cap in place.

Electrode Replacement

The CL200 is shipped with an electrode attached. If the electrode has to

be replaced, or if a pH or ORP electrode is to be installed, follow these

steps:

1. Turn the unit off.

2. To remove an electrode, unscrew and remove the electrode collar

(turn the collar counter-clockwise).

3. Gently rock the electrode from side to side, pulling it downwards, until

it disconnects from the meter.

4. To attach an electrode, allign the slots and carefully plug the

electrode into the meter socket.

5. Tighten the electrode collar firmly enough to make a good seal (a

rubber gasket seals the electrode with the meter).

CL200 V6.0 06/058

Specifications

Display Multifunction LCD with Bargraph

Operating conditions 32 to 122oF (0 to 50oC) and < 80% RH

Chlorine range 0.01 to 10.00 ppm (Total Chlorine)

Chlorine accuracy 0.05 to 5.00ppm; ± (10%reading + 0.01ppm)

5.00 to 10.00ppm; ± (15%reading + 0.05ppm)

Temperature 23 to 194oF (-5 to 90oC)

measurement range

Temperature range 32 to 122oF (0 to 50oC)

for Chlorine

measurement

Temp. Resolution 0.1oup to 99.9 then 1o

Temp. Accuracy ± 1.8oF (1oC) from 23 to 122oF (-5 to 50oC);

± 5.4oF (3oC) from 122 to 194oF (50 to 90oC)

Measurement storage 15 readings can be stored and recalled

Low battery indication ‘BAT’ appears on the LCD

Power Four CR2032 button batteries

Auto power off Automatically turns off after 10 minutes after the

last key press

Support line (781) 890-7440

Technical support: Extension 200; E-mail: support@extech.com

Repair & Returns: Extension 210; E-mail: repair@extech.com

Product specifications subject to change without notice

For the latest version of this User’s Guide, Software updates, and other

up-to-the-minute product information, visit our website: www.extech.com

Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects

in parts and workmanship for one year from date of shipment (a six month limited warranty

applies to sensors and cables). If it should become necessary to return the instrument for

service during or beyond the warranty period, contact the Customer Service Department at

(781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact

information. A Return Authorization (RA) number must be issued before any product is

returned to Extech. The sender is responsible for shipping charges, freight, insurance and

proper packaging to prevent damage in transit. This warranty does not apply to defects

resulting from action of the user such as misuse, improper wiring, operation outside of

specification, improper maintenance or repair, or unauthorized modification. Extech

specifically disclaims any implied warranties or merchantability or fitness for a specific

purpose and will not be liable for any direct, indirect, incidental or consequential damages.

Extech's total liability is limited to repair or replacement of the product. The warranty set

forth above is inclusive and no other warranty, whether written or oral, is expressed or

implied.

Calibration and Repair Services

Extech offers repair and calibration services for the products we sell. Extech also

provides NIST certification for most products. Call the Customer Service Department for

information on calibration services available for this product. Extech recommends that

annual calibrations be performed to verify meter performance and accuracy.

more info for Extech CL200

Phone: 01235 838 555

Email: cs@airconcern.co.uk

Web: www.airconcern.co.uk

Air Concern Ltd, Building 173 Curie Avenue Harwell Didcot, Oxfordshire

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