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Low Cost Telemetry Hardware

The SM300 Series MTU (master terminal unit) and RTU (remote terminal unit) are low-cost, stand-alone telemetry hardware used for I/O signal transmission.  Simply install the master and remote units, set DIP switches and power up.  Master (MTU) to Remote (RTU) communication data signals such as cycles, runtimes, minimums, and maximums are transmitted via internal modem over leased lines, radio or spread spectrum connections. This system is compatible with every programmable controller, DCS, or other device that accepts input signals, as well as most commercial software packages. The SM300 Master supports telemetry for 1 or 2 tanks and status and control for up to 8 pumps. Up to 4 Remote RTUs can be connected to the Master.

As your needs change, you can combine the SM300 Series with the more powerful SM800 Series PLC Controller or upgrade to a full SCADA system by adding a PC with operator workstation software.

Typical applications include:

  Water & Wastewater Systems

  Sub Stations

  Lift Stations

  Tank Farms

  Irrigation

  Flow, Level, & Pressure Monitoring

  Pipeline Monitoring

  Water Mains

  Environmental Monitoring

The SM300 Series is compatible with any Modbus capable device or software.  For more technical information, see the Master or Slave data sheets.

MTU I/O Features:

1. Output real time tank levels as 4-20ma which correspond to 4-20ma signals received from the remote site.
2. Output real time status Digital's which correspond to Digital's received from the remote site.
3. Accepts control contact inputs which are in turn sent to the remote site for output to the device (i.e. pump).
4. Communications are automatic. The Master provides notification output if communication failure with remote is detected. If communications fail, remote outputs are held or reset.

  8 Digital In

  8 Digital Out

  2 Analog Out

  Expansion:  Digital In and Out

  Multiple Protocols available

RTU I/O Features:

  1 Analog In, 4 Digital In (Model SM305)

  4 Analog In, 1 Digital In (Model SM315)

  4 Digital Out (Model SM305)

  2 Digital Out (Model SM315)

  5A Relay

  Expansion:  Digital In and Out

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© 2009, Nota Bene Technology,

19900 County Rd. 81, Maple Grove, MN 55311

SM300 Series MTU/RTU

Master

Remote

Low Cost Telemetry

Used with PLCs (Programmable Logic Controllers) , Monitoring and Control, End-to-End Telemetry and PC I/O Systems

Automatically generates real-time data such as cycle, runtime, minimum and maximum

Provides real-time data to remotely monitor equipment problems

Expansion board options

Used with leased lines, dial in modem or wireless radio connection

Enclosures and radios are available options