Hach CL17 Chlorine Analyzer


SKU: hachcl17

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EPA-approved Free or Total Chlorine Analysis

Hach’s CL17 Chlorine Analyzer is compliant with US EPA Regulation 40 CFR 141.74, and both Method 4500-CL G and Method 334.0 can be used for measurement of residual chlorine in drinking water.

Accurate, Reliable Results

The Hach CL17 is the industry standard for online chlorine monitoring. It comes factory-calibrated and does not require recalibration unless specified by your regulatory agency. The CL17 analysis method is not affected by changes in chlorine concentration, sample pH, temperature, flow, or pressure, resulting in better accuracy than other online chlorine testing methods.

Simple, predictable maintenance

The CL17 can operate unattended for up to 30 days. Monthly preventative maintenance can be performed in 15 minutes or less and requires no special tools.

Accuracy: ± 5 % or ±0.03 mg/L as CL₂, whichever is greater
Air Purge: 0.1 cfm (0.17 m³/h) instrument quality air at max. 20 psig (ca. 1.4 bar) with 1/4-inch OD tube, quick disconnect fitting
Alarm: Two alarms selectable for sample concentration alarm, analyzer system warning, or analyzer system shut-down alarm. Each is equipped with an SPDT relay with contacts rated for 5A resistive load at 230 V AC.
Certifications: Europe, CE Approved with:
EN 61326-1
EN 61010-1
IEC 60529

North America:
UL 61010A-1
CAN/CSA C22.2 No. 1010.1-92
Communication Capabilities: 4-20mA Output
Cycle Time: 2.5 min
Description : CL17 Chlorine Analyzer with Reagents for Free Chlorine
Dimensions (H x W x D): 454 mm x 314 mm x 179 mm
Display: LCD, 3-1/2 inch digit measurement readout and six-character alphanumeric scrolling text line
Drain: 1/2-inch ID flexible hose, hose barb
Enclosure Construction: ABS plastic, two clear polycarbonate windows, IP62-rated with the gasketed door latched.
Enclosure Rating: IP62
Includes: CL17 Chlorine Analyser with 1 Month Supply of Free Chlorine Reagents, Maintenance kit, Installation Kit, and Manual. (The power cord is ordered separately.)
Inlet: 1/4-inch OD polyethylene tube, quick-disconnect fitting
Inlet Pressure: 1 - 5 psi (0.07 - 0.34 bar), 1.5 psi (0.103 bar) is optimum
Interferences: Other oxidizing agents such as bromide, chlorine dioxide, permanganate and ozone will cause a positive interference. Hexavalent chromium will cause a positive interference: 1 mg/L Cr6+ = approximately 0.02 mg/L as Cl₂. Hardness must not exceed 1,000 mg/L as CaCO₃.
Light Source: Class 1 LED (light emitting diode) with a peak wavelength of 520 nm; 50,000 hours estimated minimum life
Lower Limit of Detection (LOD): 0.03 mg/L (ppm)
Mounting: Wall mount
Operating Humidity: Up to 90 % at 40 °C (104 °F) maximum
Operating Temperature Range: 5 - 40 °C max.
Parameter: Chlorine, Free & Total
Power Requirements (Amps): 2.5 A
Power Requirements (Hz): 50/60 Hz
Power Requirements (Voltage): 100 - 115/230 V AC
Pressure Range: Inlet Pressure to Sample Conditioning: 1.5 - 75 psi (0.1 - 5.2 bar)
Pressure Regulator Included?: No
Range: 0 - 5 mg/L Cl₂
Recorder Outputs: One 0/4-20 mA with an output span programmable over any portion of the 0 to 5 mg/L range. Recommended load impedance 3.6 to 500 ohms, 130 V isolation from earth ground.
Repeatability: 0.01 mg/L or 3.0 % , whichever is greater
Sample Flow Rate: 200 - 500 mL per minute minimum
Sample Temperature: 5 - 40 °C (41 - 104 °F)
Weight: 10.49 kg


Used -- received from a municipality.   Not fully tested, but will be sold with warranty.


    • Hach CL17 Chlorine Analyzer
    • Line Cord



        30 Day warranty. We pledge to offer the best service and warranty to all of our customers!  We are extending a 30 Day warranty on this item. This is our way of saying thank you for allowing us to serve you


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