Redox (ORP) Controllers

Choosing the right controller needs to be decided based on the following criteria:

• Parameters to be measured: pH, mV, T°C, Conductivity
• Range
• Control desired: ON / OFF or proportional
• Set points: 1 or 2 for pH, 1 for other types of controllers
• Is an alarm needed
• Output signal: analog 4 to 20 mA to record or digital RS-232

mV 600  

click on photo to enlarge

Technical Data   Range -2000 to 2000 mV Control ON/OFF or Proportional Set point 1 Alarm Yes Output Analog or digital

HI 932700U  

click on photo to enlarge

Technical Data   Range -1000 to 1000 mV Control ON/OFF Set point 1 Alarm No Output Analog

HI 8720  

click on photo to enlarge

Technical Data   Range -1000 to 1000 mV Control ON/OFF Set point 1 Alarm Yes Output Analog