Free / Combined Chlorine Controller


AFC100 free combined chlorine controller process analyzer product image


Free / Combined Chlorine Controller AFC100

The sensors and the measuring cells in our catalog allow the use of the instruments in any type of with most oxidizing substances such as free chlorine, combined chlorine, total chlorine, chlorine dioxide and dissolved ozone. AFC100 is a reagentless chlorine analyser. The chlorine level measurement is also less dependant on pH as compared to other chlorine analyser.


Chlorine Sensor Probes

Few types of chlorine sensor probe are available to be paired with the Free / Combined Chlorine Controller AFC100:Free combined chlorine controller sensor probes



  • Range: 0÷200.0 ppb/ µg/l ; 0÷2.000 ppm/ mg/l; 0÷20.00 ppm/ mg/l; 0÷200.0 ppm/ mg/l; 0÷2000 ppm/ mg/l; -10.0 ÷ 110.0 oc, 14.0 ÷ 230.0 oF
  • Display: The display shows the values of the measures and the messages which guide the user through set-up, configuration and during normal operation.
  • Keyboard: There are dedicated keys to directly access zero and sensitivity calibration as well as set point configuration
  • Two Filters Software: The user can set two filters in order to obtain a stable reading and a faster response to the variations of the measurement in the process.
  • Operating modes: Free / Combined Chlorine Controller AFC100 can operate in automatic, measure or simulated mode so to facilitate start-up or maintenance.
  • Dual Analog Outputs: Can be addressed to any input and programmable 0/4 – 20 mA on two points of the scale. They allow PID control or transmission of the measured values.
  • Two On/Off Regulators: Independent and addressable to any input with programmable set point on the scale.
  • PID Output: During PID control through the analog output, the level of the actuation is displayed. The user can select an FM regulation (pulse frequency) or WM (pulse width) addressed to the assigned relay.
  • Logic Inputs: Two free voltage contacts can generate a hold or alarm condition.

Free / Combined Chlorine Controller AFC100 applications:

  • Drinking Water
  • Textile Industry
  • Electroplating
  • Food and Beverage
  • Waste Water Treatment
  • Chemical Industry
Inputs• Potentiostatic sensors
• Polarographic membraned sensors
• Pt100 / Pt1000
Zero± 20 %, ± 5.0 °C, ± 9 °F
Sensitivity12.5 ~ 250 %
Resolution1 digit
Accuracy0.2 %
Repeatability0.1 %
Non-linearity0.1 %
Dual filter software0.4 ~ 50.0 seconds for small and large variations
Dual analog output0-20 mA / 4-20 mA Rmax 600 Ω
Dual set point HI/LOON/OFF – PID – PFM – PWM, SPST relays
Set point hysteresis0 ~ 10 %
Delay on set point0 ~ 100.0 seconds
AlarmSPDT relay with delay 0 ~ 100.0 seconds
Cleaning functionOff / autoclean / manual, relay SPDT
Repetition time 0.1 ~ 100.0 hours
Cleaning time 1.0 ~ 60.0 seconds
Holding time 0.0 ~20.0 minutes
SPST and SPDT relay contacts220 V – 5 A resistive load
Operating temperature-10 ~ 60 °C
Humidity95% without condensation
Power supply85 ~ 264 Vac – 50/60 Hz
9 ~ 36 Vdc, 12 ~ 24 Vac
Terminal blocksremovable
Weight1360 g (C01)
450 g (C02)
EnclosureABS, IP 65 protection (C01)
Metallic, IP 65 front panel only (C02)
Dimensions256x230x89 mm (C01)
98x98x104 mm, 90x90x95 mm panel cutout (C02)
EMC/RFI conformityEN 61326