Digital Controllers Selection Chart

Models and features

 

CHEMTROL Selection
Features
CH230
CH240
CH250
CH255
CH265
pH Control
ORP Control
Sanitizer, Free Chlorine control (PPM)
4-20 mA Outputs
OPT
OPT
OPT
OPT
Feed Mode: Manual, Automatic, Proportional
Alarms: Audio, Visual, External
Alarms: Out-of-Range, Runtime and Overfeed