• Detects at levels as low as 8 parts per billion (ppb)
• Cumulative Chlorine Counter™ keeps track of total chlorine exposure over time
• Continuous chlorine measurement for up to 30 days unattended

Take precise control of your dechlorination process and meet strict residual chlorine limits with the CL17sc Ultra Low Range (ULR) total chlorine analyzer. It's best suited for clean water applications when determining presence or absence of chlorine at low levels. Continuously monitor total chlorine concentration from 0.008 to 5.0 mg/L. Flow-through cell design is unaffected by changes in concentration, pH, temperature, flow or pressure.

User-friendly housing and components
The CL17sc analyzer housing is designed with ease of use in mind. The IP66-rated housing features a window that lets you view reagent levels and colorimeter status. The multicolor warning indicator alerts you to problems with just a glance. The quick-change one-piece tubing cartridge harness easily snaps into place in seconds with no special tools required. Even maintenance is easy—just change the reagents and clean the colorimetric cell monthly.

Cumulative Chlorine Counter provides residual chlorine data
Understand the impact of chlorine exposure—residual chlorine data gives you insight into how much chlorine is being discharged over time. This lets you predict potential breakthrough damage to an industrial component and forecast RO membrane lifespan. User-defined alarms can be set to alert when approaching critical limits. Trend graphs are available with attached controller display, and the counter can be reset at any time.

Expanded connectivity with SC controllers
CL17sc analyzers connect to any SC-based digital Hach controller for power, operation, data collection, data transmission and diagnostics. We recommend SC4500 controllers, sold separately.

For a complete system, order:
1. ULR CL17sc analyzer
2. SC controller (SC4500 or SC1000 models)
3. Reagent Set (stock # 37119)

Analyzers are available with two types of installation kits. For standard mounting, choose models with the debubbling standpipe installation kit (requires 24" installation height above analyzer). For applications with high or fluctuating pressures or limited installation space, choose models with a pressure regulator installation kit. Installation kits include: sample inlet and drain tubing, Y-strainer, and shutoff valves for flow control.

• Accuracy: ±5% or ±10 ppb as Cl2 (whichever is greater) =4000 ppb; ±10% as Cl2 >4000 ppb
• Measurement interval: 2.5 minutes
• Inlet pressure: 1.5 to 5 psig (If your source pressure is higher than this range, be sure to order an analyzer with a pressure regulator kit.)
• Sample flow rate: 60 to 200 mL/min through the instrument (integral flow meter reports value)
• Tubing connections
  Inlet (sample): 1/4" OD quick-connect fitting for rigid tubing
  Outlet (drain): 1/2" ID slip-on fitting for soft plastic tubing
• Output: Hach digital sensor cable signal for SC-based controllers
• Operating temperature: 41 to 104°F
• Power: supplied by connected SC-based controller (12 VDC)
• Cable: 6.6'L single digital Hach type (extendable to 49'L max)
• Dimensions: 12.9"W x 13.5"H x 7.0"D