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The original Remote Interface Unit (RIU) is a field-mounted single sensor transmitter/controller. The unit will accept inputs from any sensor providing a voltage, 4-20mA or thermistor input. Equipped with a large-font 8x2 backlit display, the user can view readings directly at the sensor location.
The unit contains one SPDT 4-amp relay that can be setup for up to five control blocks. These control blocks are configured via a PC setup program using the optional computer connection cable. This allows the user to setup a local control, alarm or even PID function.
The unit also contains an automated calibration feature allowing calibration by simply holding a magnet to the enclosure side.
The original RIU will function as a stand-alone controller, or up to 54 units may be daisy-chained for a network connection. Many network connections can be made allowing for a scalable system from small to large. This allows the user to collect, manipulate and control all of the data via the PT4 LC Controller, PT4 RIU controller or using the PT4 Sync HMI Software (Windows-based).
Features and Benefits
• Large backlit local indicator display.
• Tank-side calibration, simple 1-touch magnetic calibration
• Control and alarm indicators
• Networkable units allow for a cost-effective scalable system