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Water Quality Measurement Solutions

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A Watts Water Technologies Company

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OnLine Residual Chlorine Monitor

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The HF scientific QZXI OnLine Residual Chlorine Monitor is an economical and low maintenance

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instrument for chemical or industrial processes that require continuous monitoring and control of residual

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Free or Total Chlorine levels. User selectable cycle times, 4-20mA and RS-485 with Modbus output that

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can be used to control feed pumps and user selectable alarms allow complete manual or automatic control

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of chlorine dosing. The instrument is housed in a strong, shatterproof case with easy access to all service

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functions and reagents

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High range model now

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available (0 - 15mg/l)!

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Standard Features

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Specifications

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• Free or Total Chlorine

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Can be used for Free or Total Chlorine measurements

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• Low Operating Costs

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Low Reagent use translates into low operating cost

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• Simple Operation

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Designed for unattended operation up to 30 days

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• Colorimetric DPD Chemistry

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Uses inexpensive DPD chemistry rather than expensive electrodes

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• User Selectable Cycle Times

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Cycle times can vary between 110 seconds to 10 minutes (optional 60

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seconds to 10 minutes)

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• Microprocessor Based Technology

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Microprocessor based technology ensures high quality at the industry's

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lowest price

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• Alarms

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Two User Selectable Alarms for Sample Concentration

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• Drinking Water, Wastewater and More

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• 4-20mAand RS-485 with Modbus

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• USEPA Accepted Methodology

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Standard Method 4500-CI G, DPD colorimetric method

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• Certifications

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Lloyds Register Test Specification for Vibration and 22 Degree Tilt Test

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En 60954: 2002 Section 8.2, 8.4, 8.7, Specification test No1: Section 14

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EC 6-parameter Environmental Marine Test for high humidity, high

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temperature (86°C), low temperature (-5°C), salt spray

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• Certified byABS (American Bureau of Shipping) for marine use

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Ordering Information

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Cat. No. Description

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20040

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CDC OnLine Chlorine Residual Monitor for Free or Total Chlorine.

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Complete with Operating Manual. Reagents must be purchased

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separately. If the application combines high humidity with cold

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sample water, purchase a #09944 Desiccant Cartridge separately.

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Accessories

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09950

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Replacement tubing/cuvette kit

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Range:	0-10 mg/l
Cycle Time:	User Selectable: 110 seconds -10 minutes Optional: 60 seconds -10 minutes
Accuracy:	0 - 6 mg/l - ±5% or 0.03 mg/l of CI2 whichever is greater 6-10 mg/l - ±10%
Resolution:	0.01 mg/l
Method:	USEPA accepted DPD method of analysis for measuring Free or Total Residual Chlorine
Standard Outputs:	4-20 mA and RS-485 with Modbus
User Alarms:	2 User Selectable Alarms for Sample Concentration
Operating Temperature:	See note below*
Input Pressure:	0.3 bar -10.3 bar (5 -150psi)
Enclosure:	ABS Plastic, IP66
Power:	100 - 240 VAC Auto Switchable 47-63hz
Certifications:	CE.UL, CSA, (ETL, ETLc)
Shipping Dimensions:	16" x 16" x 10" (41 cm x 41 cm x 26cm)
Shipping Weight:	8 lbs (3.6kg)
Actual Weight:	6 lbs (2.7kg)
Installed Dimensions	12.82" x12.25" x 5.06"
Flow Rate to Waste:	200-400 ml/min

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Specifications subject to change without notice.

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* Operating temperature of CLX Monitor 0° - 55°C

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Operating temperature for 30-day reagent life 0° - 40°C

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Reagent life will be <30 days operating monitor above 40°C

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Cat. No.

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Kit Reagents

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Free Chlorine 30 day supply

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Total Chlorine 30 day supply

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Free Chlorine 60 day supply

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Total Chlorine 60 day supply

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Free Chlorine 12 month supply

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Total Chlorine 12 month supply

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J.A.W*

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09951

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09952

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09953

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09954

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09955

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09956

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Dry**

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09947X

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09948X

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N/A

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N/A

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09937X

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09938X

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Liquid

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09947

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09948

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09935

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09936

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09937

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09938

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3170 Metro Parkway, Ft. Myers FL 33916 e-mail: hfinfo@watts.com

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ph: (239)-337-2116 • fax: (239) 332-7643 • toll free: 888-203-7248 WWW.hfscientific.com

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*Just Add Water (and supplied DPD reagent)

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"User must add Sulfuric Acid, Sodium Hydroxide

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and DPD reagent before use

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CCDC

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with cover

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removed showing

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L reagent bottles

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Rev. 11-17-2011

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