PH电极
Technical Data
ComparepH
| Measuring Principle | |
| Application | Aggressive chemical and hygienic applications, process |
| Characteristic | Analog, digital pH single-rod measuring cells For chemical process, hygienic and sterile applications with an ion trap for poison-resistant reference |
| Measuring range | pH 0 to 14 |
| Measuring principle | Ceramic diaphragm, ion-trap |
| Design | All shaft lengths with temperature sensor Advanced gel technology Digital electrode with Memosens technology |
| Material | Glass and ceramic |
| Dimension | Diameter: 12 mm (0.47 inch) Shaft lengths: 120, 225, 360 and 425 mm (4.72, 8.86, 14.2 and 16.7 inch) |
| Process temperature | 0 to 140 °C (32 to 284 °F) |
| Process pressure | 1 to 14 bar (15 to 203 psi) |
| Temperature sensor | NTC 30k |
| Ex certification | ATEX, FM, CSA |
| Connection | Inductive, digital connection head with Memosens technology |
| Ingress protection | IP68 |
| Certificates, declarations and approvals | 3A, biocompatibility |
The Memosens CPS71D electrode is especially suitable for demanding applications. With its unique fouling-resistant reference system and moisture-proof, waterproof design, it reliably measures heavily contaminated media and corrosive media such as strong acids and alkalis. The CPS71D electrode uses Memosens digital technology, supports extended data storage of calibration and process parameters, and is the perfect basis for predictive maintenance. Sensors can be precalibrated in the laboratory and replaced quickly on site, minimizing production interruptions.
Benefits
The electrode's unique ion trap effectively prevents toxic diffusion in the lead and reference system, enabling measurement of strong acids and alkalis with a long electrode service life.
Optional pressurized reference system for reliable measurement of media prone to clogging, such as dispersions.
Allows inverted electrode installation for flexible mounting.
Inductive cable connection and non-contact signal transmission eliminate the influence of moisture and corrosion, improving process integrity.
Fast electrode replacement on site shortens production downtime and reduces operating costs.
Memosens digital technology supports extended data storage for calibration and process parameters, enabling trend detection and predictive maintenance. It is also the ideal foundation for advancing IIoT technology.
Application areas
Chemical process engineering and process monitoring:
Highly toxic media, e.g. H2S
Rapidly fluctuating pH values
Approved for ATEX, IECEx, CSA C/US, NEPSI, Japan and INMETRO; suitable for use in explosion protection zones 0, 1 and 2.
Commonly used model: CPS71D-7TB21
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Measuring principle video
Source: public information from the Endress+Hauser website
Related Models
| Model | Name |
|---|---|
| CPS71D-7TB21 | pH电极 |
| CPS71D-7TB2G | pH电极 |
| CPS71D-7TC21 | pH电极 |
| CPS71D-7TC2G | pH电极 |
| CPS71D-7TP2G | pH电极 |
| PS71D-7TP21 | pH电极 |
Case Studies
市政污水处理污水处理厂 · PH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PH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PH，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 · PH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PH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PH，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 · PH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PH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PH，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 · PH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PH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PH，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。
