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Product picture limit switch RTA421

RTA421
Limit switch

Contactor with loop power supply for monitoring current or voltage signals

RTA421
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from CHF 803.-

Specs at a glance

  • Input

    1 x analog (U, I)

  • Output

    1 x transmitter power supply

  • Output

    1 x transmitter power supply

  • Display

    LCD 6 mm (0.24")
    4-digit
    Bargraph

  • Power Supply

    Not defined

Field of application

The RTA421 contactor monitors industrial processes for safe operation. The unit analyzes current (0/4...20 mA) and voltage signals (0/2...10 V) and switches two independent output relays if the values either exceed or undercut the preset alarm set points. On the display both limit values are indicated in parallel. The bar graph informs on the connected signal at any time. Applications include pump control in the waste water industry. Level measurement in silos can be economically achieved.

  • Plant and machine construction

  • Panel builders

  • Process monitoring

  • Process control

Benefits

  • 2 relays for set point monitoring (with SPDT contacts)

  • Loop power supply for connected sensors

  • LC display for alarm set points and bar graph

  • Compact housing

  • Front end setup using 3 push buttons

  • DIN rail mounting, 45 mm housing width

Predecessor

  • Simple products

  • Easy to select, install and operate

Technical excellence

Simplicity

  • Standard products

  • Reliable, robust and low-maintenance

Technical excellence

Simplicity

  • High-end products

  • Highly functional and convenient

Technical excellence

Simplicity

  • Specialized products

  • Designed for demanding applications

Technical excellence

Simplicity

Variable

FLEX selections Technical excellence Simplicity
  • F
  • L
  • E
  • X

Fundamental selection

Meet your basic measurement needs

Technical excellence
Simplicity
  • F
  • L
  • E
  • X

Lean selection

Handle your core processes easily

Technical excellence
Simplicity
  • F
  • L
  • E
  • X

Extended selection

Optimize your processes with innovative technologies

Technical excellence
Simplicity
  • F
  • L
  • E
  • X

Xpert selection

Master your most challenging applications

Technical excellence
Simplicity

Variable