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RTA421

Limit switch with transmitter supply for monitoring current or voltage signals

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Endress+Hauser
SKU: RTA421

Highlights

  • LC display for limit values and bar graph
  • Input: 1 x Analog (U, I)
  • Output: 1 x transmitter power supply
  • 2 relays for limit monitoring (with change-over contacts)
  • Transmitter supply 196to250 V AC, 97to127 V AC, 20to250 V AC/DC

Fields of application

  • Plant and apparatus engineering
  • Switch cabinets
  • Process monitoring
  • Process control

Details

The RTA421 limit switch from Endress+Hauser is used for monitoring and safeguarding industrial processes. The device evaluates current signals (0/4...20 mA) and voltage signals (0/2 to 10 V) and switches two independently operating relays at the output if previously defined limit values are exceeded or not reached. Both limit values can be read simultaneously in the display. Applications, e.g. pump controls in waste water technology, level monitoring in tanks can thus be implemented at low cost.

General Information
More Information
FunctionDisplay Switching Power supply
SoftwareNot defined
Measuring rangeSpannung: 0/2...10 V, max. Spannung 50 V, Ri: 1 MΩ Strom: 0/4...20 mA; max. Strom 150 mA Ri: 5 Ω
Display typeLCD 6 mm (0.24")
4-digit
Bargraph
Input / Output
More Information
Inputs1 x Analog (U, I)
Output1 x transmitter power supply
Relay output: 2 x changeover contact
Communication protocolFoundation Fieldbus protocol
PROFIBUS PA protocol
ConfigurationNot defined
ResolutionVoltage: 41 mV, 8 Bit
Power: 83 μA, 8 Bit
Mechanical Data
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Dimensions45 x 107.8 x 112 mm (1.77" x 4.24" x 4.41")
Electrical Data
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Voltage TypeAC/DC
Power supply196 to 250 V AC
97 to 127 V AC
20 to 250 V AC/DC
Certification / Approvals
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Hazardous approvalsATEX
FM
CSA
NEPSI
Other Approvals/ CertificationGL Marine certificate
Additional Information
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Ambient temperature range-20 to 60°C
Overvoltage protectionOvervoltage protection category 2
Our expert

Luis Arcos will help you to find the right product: +49 (0)30 509 308 800 shop@visayasolutions.com

Contact Expert
  • 30-day return policy
  • Official reseller
  • Expert engineering support
  • Free delivery in the EU
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€136.00 plus VAT
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  • 30-day return policy
  • Official reseller
  • Expert engineering support
  • Free delivery in the EU
Product Details