溶解氧变送器
Technical Data
CompareOxygen
| Measuring Principle | Amperometric oxygen measurement |
| Application | Water, Waste water, process, fish farming |
| Characteristic | 4-wire transmitter with graphic display. |
| Design | Dissolved oxygen transmitter in a field housing made of PC/ABS for COS31/41/71. |
| Material | PC/ABS-housing |
| Dimension | 247x170x115mm (9.63x6.63x4.48inch) |
| Temperature sensor | Display and current output. |
| Input | 1-channel transmitter. |
| Output / communication | 0/4-20mA, Hart, Profibus. |
| Certificates, declarations and approvals | CSA Gen. Purpose. |
The Liquisys COM253 standard transmitter can be used together with the COS41 and COS61 dissolved oxygen sensors. Continuous plausibility checks as well as process and sensor checks increase operational safety. Choose from a wide range of hardware and software modules (such as relays and bus communication) to meet the measuring task. The transmitter can also be upgraded at any time; simple menus and calibration make device setup and operation quick and convenient.
Advantages
Higher operational safety: continuous process check system, user-defined alarm settings, calibration plausibility check
Reliable dissolved oxygen control: current input for flow monitoring with controller switch-off and feedforward control
Simple operation and maintenance: simple one-point calibration in air, oxygen-saturated water or medium, direct manual touch control
Reduced maintenance: automatic cleaning function triggered by alarm or limit switches (using Chemoclean)
Suitable for various applications: multiple expansion functions such as P(ID) controller, timer, etc., flexibly used in various processes
Areas of application
The Liquisys COM253 transmitter can be used with the Oxymax COS41 and Oxymax COS61 dissolved oxygen sensors for environmental industry measurements, such as:
O2 aeration basin control
O2 drinking water control and monitoring
Surface water monitoring
Process water treatment and monitoring
O2 control for optimizing fish pond growth conditions
The Liquisys COM253 uses the following communication protocols and interfaces:
0/4...20 mA
HART
PROFIBUS DP
PROFIBUS PA
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Technical documentation
Technical data
Documents/Manuals/Software
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Source:Endress+Hauserwebsite public information
Related Models
Case Studies
市政污水处理污水处理厂 · 溶解氧应用案例
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，对溶解氧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溶解氧，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 · 溶解氧应用案例
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，对溶解氧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溶解氧，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 · 溶解氧应用案例
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，对溶解氧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溶解氧，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 · 溶解氧应用案例
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，对溶解氧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溶解氧，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。
