Choosing the Electrode for your Process
Process Electrode    Core Applications    Advantages    Limitations
Spherical    General Industrial    • Quick readings
• Most accurate readings    • More frequent cleaning (application dependent)
Flat    In-line or High Flow    • Less maintenance
• Accurate readings    • Easier to foul readings in stagnant/low flow water
Antimony    HF Acid Environments    • High durability and resistance to mechanical stress
• Chemically inert to substances like hydrofluoric acid
• Suitable for measurements in harsh, non-conventional environments    • Less accurate, pH range 4-10
• Require proper calibration with specific buffer solutions
• Not suitable for very low ionic strength solutions (e.g., pure water)
Hardened    Abrasive Flow    • Longer lifetime    • Slower response

AM-FCL Free Industrial Chlorine Sensor
The AM-FCL is a very compact free chlorine sensor. It operates on membrane-based amperometric technology, which provides the most trouble-free operation of all reagent-free methods. The sensor outputs a direct 4-20 mA signal so you can use a PLC or the AquaMetrix 2300 Controller. The signal is temperature compensated. Simply insert the probe’s two wires into your 4-20 loop and you’re good to go. If you combine the output of the AM-FCL with that of an Aquametrix 4-20 mA output sensor and your PLC or AquaMetrix 2300 Controller can be easily programmed to perform automatic pH compensation.

Maintaining constant pressure on the membrane is essential for accurate readings. The optional flow cell maintains the pressure and another optional flow meter insures a tighter tolerance.

The sensor is available in three measurement ranges: 0 to 2 ppm, 0 to 5 ppm and 0 to 10 ppm.

Features

Loop powered 4-20 mA output
Compact design
Combines with 4-20 mA pH probe for pH compensation
Automatic temperature compensation
Optional flow cell and flow meter insures constant pressure for accurate measurement
Inexpensive replaceable membrane and electrolyte
Applications

Drinking water disinfection
Wastewater disinfection
Chlorine generator
Swimming pools and spas