Instrumentation · Engineering · Package · PLC
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RTA421 限位开关

RTA421  限位开关

限位开关

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.
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Process transmitter

Measuring Principle
Measuring principle Contacter
Function Display
Power
Switch
Loop power supply 196...250 V AC
97...127 V AC
20...250 V AC/DC
Power Supply Not defined
Input 1 x analog (U, I)
Output 1 x transmitter power supply
Software functions Not defined
Certificates -
SIL Not defined
Display LCD 6 mm (0.24")
4-digit
Bargraph
Interface Not defined
Dimensions (WxHxD) 45 x 107.8 x 112 mm (1.77" x 4.24" x 4.41")

The RTA421 contactor monitors industrial processes and ensures safe operation. The device analyzes current (0/4...20 mA) and voltage signals (0/2...10 V) and switches two independent relay outputs when values exceed or fall below preset alarm set points. Limit values are displayed side by side on the display. A bar graph continuously indicates the connected signal. Applications in the wastewater industry include pump control. Level measurement in silos can be implemented economically.

Advantages
2 relays for set point monitoring (with SPDT contacts)
Loop power supply for the connected sensor
LCD display of alarm set points and bar graph
Compact housing
Configuration via 3 keys on the front panel
DIN rail mounting, housing width 45 mm

Application
Plant and mechanical engineering
Panel builders
Process monitoring
Process control

 

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Source:Endress+Hauserwebsite public information

市政污水处理

市政污水处理污水处理厂 · 过程测控仪应用案例

项目背景

市政污水处理客户在污水处理厂环节,长期面临「出水水质监测精度不足、仪表易受污染导致数据漂移,影响达标排放」的困扰,对过程测控仪的稳定性与测量精度提出了更高要求。

解决方案

阿仪科技技术团队结合现场工况,为客户选配了适配的过程测控仪,并完成选型、安装、调试与整定的一站式交付。

实施效果

  • 测量精度与响应速度显著提升,数据稳定可靠;
  • 仪表适应市政污水处理复杂工况,维护量大幅降低;
  • 助力客户实现连续在线监测与降本增效,获得客户高度认可。
食品饮料

食品饮料食品生产线 · 过程测控仪应用案例

项目背景

食品饮料客户在食品生产线环节,长期面临「卫生级测量要求高,在线仪表需耐 CIP/SIP 清洗且精度稳定」的困扰,对过程测控仪的稳定性与测量精度提出了更高要求。

解决方案

阿仪科技技术团队结合现场工况,为客户选配了适配的过程测控仪,并完成选型、安装、调试与整定的一站式交付。

实施效果

  • 测量精度与响应速度显著提升,数据稳定可靠;
  • 仪表适应食品饮料复杂工况,维护量大幅降低;
  • 助力客户实现连续在线监测与降本增效,获得客户高度认可。
化工制药

化工制药反应釜与储罐 · 过程测控仪应用案例

项目背景

化工制药客户在反应釜与储罐环节,长期面临「介质腐蚀性强、工况复杂,仪表需耐腐蚀且防爆」的困扰,对过程测控仪的稳定性与测量精度提出了更高要求。

解决方案

阿仪科技技术团队结合现场工况,为客户选配了适配的过程测控仪,并完成选型、安装、调试与整定的一站式交付。

实施效果

  • 测量精度与响应速度显著提升,数据稳定可靠;
  • 仪表适应化工制药复杂工况,维护量大幅降低;
  • 助力客户实现连续在线监测与降本增效,获得客户高度认可。
电力能源

电力能源电厂锅炉与汽机 · 过程测控仪应用案例

项目背景

电力能源客户在电厂锅炉与汽机环节,长期面临「高温高压工况下测量不稳定,维护停机成本高」的困扰,对过程测控仪的稳定性与测量精度提出了更高要求。

解决方案

阿仪科技技术团队结合现场工况,为客户选配了适配的过程测控仪,并完成选型、安装、调试与整定的一站式交付。

实施效果

  • 测量精度与响应速度显著提升,数据稳定可靠;
  • 仪表适应电力能源复杂工况,维护量大幅降低;
  • 助力客户实现连续在线监测与降本增效,获得客户高度认可。