Chlorine / Chlorine Dioxide Analyzer and Control System

The EMEC Chlorine Analyzer Control System, offers ease of use, accuracy and reliability for the monitoring and control of Chlorine in water. Using the EMEC LDSCL PLUS analyzer and controller, and the latest in Amperometric Cell Technology, Chlorine ppm readings are continuous and updated every second. The same controller can be used for Chlorine Dioxide, incorporated with a different sensor. Built-in pH, and temperature compensation are standard.

The System below consists of the Controller, Filter, Flow Cell and Chlorine Sensor:

Analyzer System on Backboard

EMEC Analyzer System on Backboard

Brief System Explanation

The image on the left shows a typical installation consisting of the following devices:

  • Filter – Typically a 60 micron filter is sufficient to keep particles and debris in the process water from entering the flow cell.
  • Analyzer – The EMEC LDS PLUS series of analyzers are user-friendly, and automatically cater to the different sensors that can be attached.
  • Flow Cell – The acrylic see-through flow cell incorporates the following items:
      • Flow Sensor: on the left of the flow cell is a flow switch, and upon adequate flow, the silver bullet-shaped float rises and triggers the flow sensor indicating to the system that adequate flow is now present, and control functions can be activated.
      • Temperature Sensor: the RTD sensor is located above the silver bullet float, and is used for temperature readout or compensation if required.
      • Sensor: The larger green and beige probe is the Amperometric sensor for measuring the amount of Chlorine in ppm and will be displayed on the Analyzer.
      • The flow cell also contains an inlet pressure and flow regulator, and an easily accessible water sample port.

Individual System Components

Model: EMEC LDSCL PLUS

Chlorine or Chlorine Dioxide Controller

EMEC Chlorine / Chlorine Dioxide Analyzer & Controller
Now availalbe on e-store

Description

The EMEC Series LDSCL PLUS Analyzers / Controllers offer cost-effective, user friendly control of Chlorine or Chlorine Dioxide for for Industrial Water Treatment applications. This controller accommodates both Chlorine or Chlorine Dioxide EMEC Amperometric Cells (menu selectable), and PID Control is Standard.

The user-friendly interface limits the need for reading the detail in the instruction manuals, and if you are familiar with programming other brands of controllers, you will find this to be the cutting edge, and easiest of set-ups.

  • PID Chlorine / Chlorine Dioxide Controller
  • User Friendly Encoder wheel menu, with back-lit LCD Display
  • Control Outputs for PID 4-20mA, 2 x Pulse, & 2 x Relay
  • 4-20mA Outputs for PPM, and Temperature
  • Alarm & Probe Cleaning relays
  • Communication via Ermes Webserver or modbus
  • Optional mA or pulse water meter inputs for Feed-forward control
  • Optional Communication interfaces for Ethernet, GSM, or Modbus
  • Optional Communication interface provides Ermes Web-server access for on-line monitoring and data-logging
  • Use with EMEC Series PEF Flow Cell, and SCL Amperometric Chlorine or Chlorine Dioxide Sensor
  • Disinfection Systems
  • Cooling Towers
  • Water Treatment

Model: EMEC PEF1R

Chlorine / Chlorine Dioxide Flow Cell & Probe Holder

EMEC Chlorine / Chlorine Dioxide Flow Cell
Now availalbe on e-store

Description

The EMEC Series PEF Flow Cells / Probe Holders are made of See-Through Acrylic PMMA Material, for long lasting use.

With the unique, easy flow design, they come standard with Flow Sensor, Flow Adjustment, Built-in Sample Port, and Vent.

  • Includes EMEC SEPR Flow sensor – Flow Indication via a Red LED
  • Built-in Temperature Sensor
  • Standard Tubing and Fittings
  • Includes Pressure & Flow Regulator
  • Flow Adjustment Knob
  • Built-in Sample Port
  • Use with EMEC SCL Series Amperometric Sensors

Model: EMEC SCL

Chlorine and Chlorine Dioxide Amperometric Sensors

EMEC Amperomectric Chlorine / Chlorine Dioxide Sensor
Now availalbe on e-store

Description

The EMEC Series SCL Closed Amperometric Sensors offer reliable, repeatable and accurate measurements Chlorine or Chlorine Dioxide. Various options are available for Free or Total measurements, and self-cleaning probes are also offered for dirty water environments.

With the patented membrane or self-cleaning electrode types, measurements are almost instantaneous with the controller updating the display every second.

  • EMEC SCL Digital sensors compatible with EMEC LDSCL PLUS Controllers
  • Digital interface to controller, for Auto sensor and Range detection
  • pH, and Temperature Compensated
  • 15 PSI (1 Bar) Max Pressure, or 115 PSI (8 Bar) for SCL17/18 Self-Cleaning Probes
  •  Chlorine Measurement Models:
    • SCL3S for free chlorine – Sodium Hypochlorite (organic and inorganic) for fresh water (0 – 20.00 ppm)
    • SCL3N for free chlorine – Sodium Hypochlorite (inorganic) for fresh water (0 – 2.000, 20.00 or 200.0 ppm)
    • SCL3N/0.5 for zero inorganic free chlorine – ideal for absence of Chlorine measurement for fresh water (0 – 0.500 ppm)
    • SCL18 self-cleaning for free chlorine – Sodium Hypochlorite (inorganic) for dirty water (0 – 2.000 or 20.00ppm)
    • SCL18/0.5 self-cleaning for zero inorganic free chlorine – ideal for absence of Chlorine measurement for dirty water (0 – 0.500 ppm)
    • SCL8 for total chlorine (0 – 2.000 or 20.00 ppm)
  • Chlorine Dioxide Measurement Models:
    • SCL2 for chlorine dioxide (0 – 0.500, 2.000 or 20.00 ppm)
    • SCL17 self-cleaning for chlorine dioxide, for dirty water (0 – 0.500, 2.000 or 20.00 ppm)

Optional Re-circulation System for Calibration

Re-circulation System

Recirculated Generic Calibration Block Diagram

Re-circulation System Brief Explanation

With water analyzer systems, it may be challenging to accurately calibrate the analyzer due to the process ppm changing from the time the sample is taken, to the time the analyzer is actually calibrated.

For example: the analyzer is reading 1.05 ppm at the time the sample is taken. Then by the time the sample is confirmed by a 3rd party measurement (hand-held or lab test) to be say 1.3 ppm, then by the time the operator comes to calibrate the analyzer, the reading might be lower or higher than 1.05 ppm, so calibrating the controller to 1.3 ppm based on the analyzer initially 1.05 ppm would now be incorrect.

To solve this problem, we can provide a closed-loop water sample to the flow cell which would provide a stable sample to be calibrated correctly. Isolation valves are used to direct the water flow in a recirculated loop to the flow cell, while isolating the incoming process water. The system consists of a re-circulation pump, valves, fittings, and tubing to suit. The container would be supplied by the customer to suit the size and location of the process.

Download the re-circulation block diagram here

Related Products

Zero Chlorine Analzyer

Zero Chlorine System

Open Cell Amperomectric Chlorine Analzyer

Open Amperometric Cell Chlorine System

EMEC Chemical Dosing Pumps

Chemical Dosing Pumps

Backboard Mounted Control Systems

Custom Backboard Mounted
Control Systems