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6520 SeaRAQ 8 Channel Isolated 4-20mA Current Loop Transmitter Outputs
6520 SeaRAQ 8 Channel Isolated 4-20mA Current Loop Transmitter Outputs

Part# 6520


SeaRAQ 8 Channel Isolated 4-20 mA Current Loop Transmitter Outputs

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SeaRAQ™ I/O expansion modules provide unprecedented expansion capabilities for Sealevel Relio R3 and Relio R4 industrial computers. The SeaRAQ 6520 expansion board adds eight 4-20 mA current loop transmitter outputs and is ideal for interfacing a wide variety of industrial process control and test equipment that use 4-20 mA signaling. The 4-20 mA standard remains a popular method for signal transmission in harsh environments, even over long distances. Current loop has a low sensitivity to electrical noise and is not affected by signal loss over cable runs or interconnections.

For maximum protection from damaging external voltages commonly found in industrial environments, the 6520 provides 1500 VAC of channel-to-channel and field-to-logic isolation. For easy, reliable field wiring, the board uses removable, high-retention terminal block connectors.

Sealevel's SeaMAX software drivers and utilities make installation and operation easy using Microsoft Windows and Linux operating systems. Communicate using industry standard Modbus RTU protocol or use the Sealevel SeaMAX API software libraries from your application program.

Get a jumpstart on your digital I/O development with The Digital I/O Handbook that will provide helpful information that you will use again and again. Check out Chapter 1 for an overview of logic principles.
Call for Price No
Brand/Family SeaRAQ
Modbus Yes
Analog I/O 4-20 mA Current Loop
RoHS Compliant Yes
D/A Outputs 8 Analog Outputs
Output Isolation 1500 VAC RMS (Channel-to-Channel and Field-to-Logic)
Output Impedance >20 MOhms
Field Wiring 16-30 AWG
Plate Connectors High-Retention, Removable Terminal Blocks
Operating Temperature 0 - +70C
Extended Temperature Call for Options
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
Dimensions PCB is 6.00" (L) x 4.35" (W)
  • • Analog expansion module with eight (8) 4-20 mA current loop transmitter outputs
  • • 18-32 VDC user loop voltage range
  • • Loop powered transmitter outputs
  • • 1500 VAC field-to-logic and channel-to-channel isolation
  • • Reliable long-distance communication even in harsh environments
  • • Industry standard Modbus RTU interface
  • • Input power provided via backplane connector
  • • Field wiring is simplified via removable 3.5mm terminal blocks compatible with 16-30 AWG wire
  • • Includes 20-position, removable, high-retention Phoenix terminal blocks
  • • Sealevel SeaMAX software supports Microsoft Windows and Linux operating systems

The Digital I/O Handbook (*Free)
The Digital I/O Handbook (*Free)


The Digital I/O Handbook
The Digital I/O Handbook


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