The M4i-420 provides input of up to four (4) Memosens pH, ORP, conductivity, and oxygen sensors. In addition, the device has up to four (4) separate displays on the front panel. The display accepts two 4-20 mA output signals from the MemoRail for both the pH, ORP, COND, and DO values and the process temperature. Three front panel buttons can be custom programmed for a specific operation. Also, the superluminous displays are easily readable in smoke, dust, fog, and direct sunlight.  

Easy to Use: Bright display with simple configuration

• A programmable register sequencing and scan rate allow the user to customize the display to their preferences
• Configured using integrated function keys or with a PC based software

Flexible: Modular design with a variety of input & output combinations

• The M4i-420 is scalable to fit any pH/ORP, conductivity, or oxygen application(s)
• Expandable with additional MemoRail transmitters, displays, or output modules

Informative: All sensor information at a glance

• Both the primary variable and temperature can be displayed for each sensor
• Sensor diagnostics like sensor wear and operation time are also available