9184SC Online free chlorine analyzer

Principle of Operation:

• The principle of the 9184sc online free chlorine analyzer is as follows: the electrolyte and the permeable membrane separate the electrolytic cell from the water sample, and the permeable membrane can selectively allow ClO- to penetrate; there is a fixed potential difference between the two electrodes, and the generated current intensity can be converted into free chlorine concentration.

• At the cathode: ClO-+2H++2e-→Cl-+H2O

• At the anode: Cl-+Ag→AgCl+e-

• Since under specific temperature and pH conditions, there is a fixed conversion relationship among HOCl, ClO- and free chlorine, free chlorine measurement is carried out in this way.

Industry Applications:

The 9184sc online free chlorine analyzer is suitable for hypochlorous acid (HOCL)/free chlorine measurement in drinking water and industrial process water disinfection processes, and is especially suitable for free chlorine measurement in the influent of membrane treatment processes such as reverse osmosis.

Instrument Features:

• The 9184sc online free chlorine analyzer has a wide measuring range and a low detection limit, meeting the needs of users measuring in low ranges.

• The 9184sc online free chlorine analyzer uses a selective membrane sensor.

• The 9184sc online free chlorine analyzer has pH and temperature compensation, making readings closer to the true value.

• The 9184sc online free chlorine analyzer has a built-in flow control device.

• Low maintenance: calibrate once every two months, and replace the electrolyte and membrane once every six months.

• Plug and play: it uses the electrode method; when in use, simply plug in the electrode and power on to perform free chlorine measurement.

Technical Specifications

• Measuring range:    0.005 - 20 ppm (mg/L) HOCl

• Minimum detection limit:    5 ppb or 0.005 mg/L HOCl

• Accuracy:    2% or± 10 ppb  HOCl, whichever is greater

• Response time:    90% in less than about 90 seconds

• Sample flow rate:    200～250 mL/min automatically adjustable

• Storage temperature:    -20～60℃

• Operating temperature:    0～45℃

• Sample temperature:    2～45℃

• Sample pH range:    4 ~ 8

• Calibration method:    laboratory comparison method

• Calibration interval:    once/2 months

• Maintenance interval:    generally replace the membrane and electrolyte once every six months

• Sample inlet connection:    1/4-in. O.D.

• Drain connection:    1/2-in. I.D.

• Protection class:    IP-66/NEMA 4X

• Instrument dimensions:    270 x 250 mm

Ordering Guide

TFC Analyzer Panel

• LXV432.99.00001    includes 9184sc TFC sensor, panel, pH sensor

• LXV430.99.00001    9184sc HClO sensor, panel, without pH sensor

Controller

• LXV404.99.00552    sc200 standard controller, dual-channel, digital, 4-20mA

• LXV404.99.01552    sc200 controller, dual-channel, digital, MODBUS RS232/485

• For other sc200 ordering options, please refer to the ordering instructions in the sc200 datasheet

Accessories

• Z368417,00000    pH sensor

• Z09184=A=1001    9184sc sensor

• Z09184=A=3500    9184sc membrane, pre-assembled, 4 pcs

• Z09184=A=3600    9184sc electrolyte

Source: Public information from the HACH Water Quality website