有源安全栅
The RN22 active barrier is available as a single-channel or dual-channel version, powers instrument loops for analog communication and safety instrumented systems up to functional safety level SIL 2 (SC 3). With intrinsically safe transparent HART® transmission mode, the interface reliably establishes a link between field instruments and the process control level. It is used in hazardous areas as an interface for two-wire/four-wire devices, provides a second isolated signal output and complies with NAMUR NE 175. It opens a second channel for process optimization without affecting conventional automation systems.
Advantages
Intrinsically safe interface module for use in safety instrumented systems up to functional safety level SIL 2 (SC 3), complying with IEC 61508
Fast and convenient wiring using screw terminals or push-in terminals, or power supply via the power rail T-connector
HART® interface on the front panel for convenient operation
Small, compact housing: optional dual-channel version with a width of only 12.5 mm (0.49 in), making efficient use of the space inside the control cabinet
Field of application
Single-channel or dual-channel active barrier, power supply or signal multiplier
Isolated transmission of 0/4 ... 20 mA analog signals (NAMUR NE 43)
Intrinsically safe certification for use in Zone 2 explosion-protected areas
Bidirectional HART® communication (transparent transmission mode)
Connection of two-wire and four-wire devices in hazardous areas
Ambient temperature range: -40 … 60 °C (-40 … 140 °F)
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Technical documentation
Technical data
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Source:Endress+Hauserpublic information from the website
Technical Data
ComparePower supplies & barrier
| Measuring Principle | Active barrier |
| Measuring principle | Active barrier |
| Function | 1-channel 2-channel Signal doubler |
| Loop power supply | 17,5 V ±1 V bei 20 mA open circuit voltage: 24,5 V ±5 % |
| Power Supply | 24 V DC |
| Input | 0/4…20 mA / HART feeding/not feeding |
| Output | 0/4…20 mA / HART active/passive |
| Certificates | ATEX Ex tc CSA C/US AIS JPN [Ex ia Ga], [Ex ia Da], Ex ec KC [Ex ia Ga], [Ex ia Da], Ex ec INMETRO [Ex ia Ga], [Ex ia Da], Ex ec NEPSI [Ex ia Ga], [Ex ia Da], Ex ec UK Ex tc, [Ex ia Ga], [Ex ia Da], Ex ec ATEX IECEx [Ex ia Ga], [Ex ia Da], Ex ec UL C/US DNV EAC [Ex ia Ga] IIC, [Ex ia Da] IIIC, Ex ec IIC Gc |
| SIL | SIL 2 SC 3 |
| Operation | HART |
Related Models
| Model | Name |
|---|---|
| RN22-8L2BLAZ1 | 有源安全栅 |
Case Studies
市政污水处理污水处理厂 · 电源和安全栅应用案例
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，对电源和安全栅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电源和安全栅，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。
食品饮料食品生产线 · 电源和安全栅应用案例
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，对电源和安全栅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电源和安全栅，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。
化工制药反应釜与储罐 · 电源和安全栅应用案例
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，对电源和安全栅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电源和安全栅，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。
电力能源电厂锅炉与汽机 · 电源和安全栅应用案例
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，对电源和安全栅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电源和安全栅，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。
