Skip Links
+44 (0) 1457 873 318

Download ProductsDownload DrawingsCase StudiesContact Us

Buffered Total or Free  Chlorine Monitor

Lowest buffer use (less than 10% of industry norm) chlorine monitor

ATI Model Q45H/79

A total chlorine monitor is required to ensure all chemical types are measured as there are multiple forms of chlorine in drinking water, waste water effluent, and cooling tower water.

When chlorine concentration levels reach quite low levels, it is often below the detection limits of many conventional monitors. The ATI developed total residual chlorine monitor can meet such applications due to its improved sensitivity and zero stability.

There are two versions of the total chlorine monitor available; one that integrated into a NEMA 4X fibreglass enclosure, and a second that separates the monitor for a better location.

How it works:

The Total Chlorine Monitor uses standard EPA approved iodometric chemistry where, by addition of buffer and potassium iodide, the various chlorine compounds in solution react to form iodine.

The iodine released in this reaction is measured using a highly sensitive amperometric sensor capable of 1 PPB sensitivity. The output of this sensor is linear with respect to concentration and provides fast response for both upscale and downscale concentration changes.

Features and Benefits:

  • Large 4-digit LCD Display: the alarm status and configuration information is provided by a display
  • Control Relays: Two 6-amp relays programmable for control or alarm function.
  • Isolated Outputs: Two assignable 4-20 mA outputs configured to track residual chlorine, temperature or assigned to PID control.
  • Selectable PID Controller: PID includes manual operation feature and diagnostic feature for relay notification of control problems.

Technical Specifications:

Electronic Monitor

  • Display Range: 0-200 PPB or 0-2.000, 0-20.00 PPM
  • Accuracy: ± 0.01 PPM or 0.5% of F.S.
  • Repeatability: ± 0.01 PPM or 0.5% of F.S.

Chemistry Module

  • Sensor: Membraned I2 Sensor
  • Sensor Cable: (for separated chemistry module only) 25 feet standard, 100 feet max.
  • Response Time: 90% in 60 seconds

Please download the technical documentation for further details.