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1. button to turn the meter ON The display will show Free or Total for 1 second and then CALO The meter is now ready for the zero test Press the Zero button the display will flash tEST and then 0 00 ppm The Zero Test is now complete Do not power down the meter Measurement of Test Solution Open the test chamber and remove the test bottle Add the required DPD powder Free or Total into the sample and then shake for 20 seconds until combined Place the cap on the bottle and tighten For the Free Chlorine test use the Free Chlorine DPD powder For the Total Chlorine test use the Total Chlorine DPD powder Clean and dry the outside of the sample bottle to ensure a clean surface Wait 2 minute before placing the test bottle into the meter to allow time for the solution to mix thoroughly Open the cover of the test chamber and insert the bottle completely into the chamber Line up the white mark on the bottle with the white mark of the test chamber 3 CL500 en GB_V1 1 11 14 7 Close the cover and lock it in place 8 Press the Test button The display will flash tEST for about 10 seconds and then the results will appear Note Clean and rinse the test bottle with distilled water after each test Data HOLD Press the HOLD button once while taking a measurement to freeze the value on the display Press HOLD again to release the data hold function Data Record MAX MIN Readi2. EXTECH USER GUIDE INSTRUMENTS Free and Total Chlorine Tester Patent Pending Model CL500 EXTECH SER INSTRUMENTS Chlorine Meter CL500 Introduction Congratulations on your purchase of the CL500 chlorine tester The CL500 is a revolutionary first of its kind measurement device that measures free and total Chlorine from 0 00 to 3 50 ppm The electrode method employed 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 CL500 for the user include easy to use and maintain high accuracy self calibration and fast response This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service Please visit our website www extech com to check for the latest version of this User Guide Product Updates and Customer Support Applications The CL500 can be used wherever a measurement of the total chlorine in water as 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 hypochlorous acid and hypochlorite ion Typical applications include Total Chlorine measurements of discharge water from water treatment plants public dr
3. des of the 1 00 ppm Chlorine standard Free or Total solution bottle and insert it into the testing chamber Line up the white mark on the bottle with the white mark in the chamber close and latch the cover Press CAL once more the display will flash CAL and then show the following When calibration is complete the LCD will return to the normal operating mode and measure the test solution The display should show 1 00 ppm The meter is now ready to measure test solutions 6 CL500 en GB_V1 1 11 14 Maintenance Low Battery Indication When the batteries become weak the X1 icon will appear in the display Refer to the battery replacement information below Battery Replacement 1 On the back of the meter remove the 2 screws holding the battery cover in place 2 Replace the six 6 AAA batteries observing polarity 3 Replace the battery compartment cover Battery Safety Reminders 1 Never dispose of batteries in a fire Batteries may explode or leak 2 Never mix battery types Always install new batteries of the same type Never dispose of used batteries or rechargeable batteries in household waste As consumers users are legally required to take used batteries to appropriate collection sites the retail store where the batteries were purchased or wherever batteries are sold Disposal Do not dispose of this instrument in household waste The user is obligated to take end of life devices to a designated c
4. inking water supplies and cooling towers and free chlorine measurements of the disinfectant properties in swimming pools and cooling water applications Meter Description CL500 Front Panel Description Test Bottle Chamber Test Bottle Chamber latch LCD displa ii EXTECH POWER button Chlorine Meter C1500 s_ ZA HOLD button REC MAX MIN button ZERO button TEST CAL button 0 700 OS Oy ON Bw No Test bottle 2 CL500 en GB_V1 1 11 14 Getting Started Equipment Required A chlorine test requires a 10ml sample bottle reagent powder for testing Free and Total chlorine and the CL500 meter Measurement Procedure Calibration considerations 1 2 Ensure that the meter has been calibrated prior to use Refer to the calibration section for this procedure Test sample Zero measurement Note Prior to testing set the meter mode to FREE or TOTAL based on the desired test method See Mode Selection 1 2 Sr SY e The meter should be in the OFF position Place the test sample into the sample bottle up to the 10mL line minimum Place the cap on the bottle and tighten Clean and dry the outside of the sample bottle to ensure a clean surface Open the cover of the test chamber and insert the bottle completely into the chamber Line up the white mark on the bottle with the white mark of the test chamber Close the cover and lock it in place Press the POWER
5. ngs 1 The Data record function records the MAX and Min readings 2 Press REC button once to begin Data recording The LCD will display the REC symbol 3 To view the MAX value while in the recording mode press REC once The display will show the maximum reading and REC MAX will show on the LCD display 4 Press REC button once again and REC MIN will display on the LCD along with the minimum reading 5 To erase the Max value and continue recording while in the record mode momentarily press the Rec button The display will show REC MAX Momentarily press the HOLD button the display will now show REC The Max value has been erased 6 To erase the Min value and continue recording while in the record mode momentarily press the Rec button The display will show REC MAX Press the REC button once again and now the display will show REC MIN Momentarily press the HOLD button the display will now show REC The Min value has been erased 7 To exit Record mode momentarily press the Power button to power off the meter Mode Selection Free or Total 1 The meter should be powered OFF 2 Press the HOLD and REC buttons simultaneously and then momentarily press the Power button Press the TEST button to select the desired function Free or Total Chlorine 4 Press the REC button to confirm and save the selection into memory Momentarily press
6. ollection point for the disposal of electrical and electronic equipment Electrode considerations The CL500 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 Cleaning the Meter Occasionally wipe the meter housing with a damp cloth Do not use abrasives or solvents it CL500 en GB_V1 1 11 14 Specifications Display Operating conditions Chlorine range Resolution Accuracy Light Source Light Detector Response Time Sample Volume Sample Time Power Power Consumption Dimensions Auto Power OFF Method LCD size 1 6 x 1 3 41 mm x 34 mm 0 to 50 C 32 to 122 F and lt 80 RH 0 00 to 3 50 ppm Total Chlorine 0 00 to 3 50 ppm Free Chlorine 0 01 ppm 0 02 ppm 1 00 ppm LED 525 nm Photo Diode Less than 10 seconds 10mL minimum Approximately 1 second Six 1 5 V batteries Stand By Mode approx 4mADC Testing Mode approx 12mADC 155 x 76 x 62mm 6 1 x 3 0 x 2 4 320g 0 70lbs Automatically switches OFF 10 minutes after the last key press The measuring method is an adaptation of the USEPA method 330 5 and standard method 4500 CI G Copyright 2014 FLIR Systems Inc All rights reserved including the right of reproduction in whole or in part in any form www extech com 8 CL500 en GB_V1 1 11 14
7. the Power button to turn off the meter Auto Power OFF The auto power off feature automatically switches the CL500 OFF 10 minutes after the last key press 4 CL500 en GB_V1 1 11 14 Calibration Procedure The CL500 can be calibrated for Free or Total Chlorine measurements Prior to calibration set the Meter to either the Free or Total mode Zero Calibration Procedure 1 Press the Power button to turn the meter ON The display will show Free or Total and then CAL 0 Press the Zero button the display will flash tEST for about 10 seconds and will then show 0 00 ppm Press and hold the CAL button until CAL appears on the display Release the CAL button Clean the sides of the Zero Chlorine solution bottle and insert it into the testing chamber Line up the white mark on the bottle with the white mark in the chamber and close the cover and latch it Press CAL once more and the display will flash tEST and show the following 0 00 CAL ppm 7 The meter is now ready for zero chlorine calibration 10 Press CAL button once The LCD will flash CAL for 10 seconds and will then show the following display CAL 0 00 ppm The LCD will then display 1 00 CAL ppm Zero Chlorine calibration is now complete The meter is now ready for the 1 00 ppm Test solution calibration 5 CL500 en GB_V1 1 11 14 1 00 ppm Test solution calibration 1 Clean the si
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