Multi-purpose, easy-to-use digital display, transmitter, and controller
The M4i-RTU provides for the input of up to eight (8) Memosens pH, ORP, conductivity, and oxygen sensors with up to four (4) separate displays on the front panel. Each display is capable of scanning up to sixteen (16) variables generated by MemoRail Modbus transmitters inside the NEMA 4X cabinet. When using the four (4) display option, you are able to monitor up to sixty-four (64) process variables and diagnostics. The superluminous displays are easily readable in smoke, dust, fog, and direct sunlight.
As a master, the M4i-RTU reads up to 16 slave devices, scales the data from each, displays the result, and operates the internal relays and 4…20mA output. It displays all enabled variables in sequence, at a user-programmable scan rate. As a snooper, the M4i-RTU listens to the Modbus traffic and displays the specific registers being polled by a master device such as a PLC.
QUICK SPECS
Power Supply: 18…30 V DC or 100…240 V AC
Inputs: Up to eight (8) Memosens sensors
Housing: Thermoplastic Polyester
Ingress Protection: NEMA 4X
Temperature: -14 … 149°F (-10 … 65°C)
Digital Output: Modbus RTU
Analog Output: (1) 4…20 mA (more 4…20 mA outputs available)
Relay Outputs: (2) relay contacts (additional relays can be added)
Approvals: UL Listed (US & C)
FEATURES & BENEFITS
- For use with all Memosens pH, ORP, conductivity (non-inductive), and oxygen sensorsScan up to 16 Modbus process variables and/or sensor diagnostics per display (64 variables with four (4) displays)
- Modbus RS-485 Scanner as Master or Snooper allowing pass through to control system
- Dual-line 6-digit display
- Super bright LED display good for use in direct sunlight
- PC-based, on board, ScanView USB programming software
- 3-year warranty
M4i-RTU Anatomy
1 – EASY TO USE: Bright display with simple configuration
- A programmable register sequencing and scan rate allows the user to customize the display to their preferences
- Configured using integrated function keys or with a PC based software
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2 – FLEXIBLE: Modular design allows for a variety of input and output combinations
- The M4i-RTU can be scaled to fit any pH/ORP, conductivity, or oxygen application(s)
- Additional MemoRail Modbus transmitters, displays, or output modules can be added for expansion
3 – 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.
