The CM42 is intended for hazardous areas. For non-hazardous applications, please select the CM442.
The Liquiline M CM42 transmitter is rugged and suitable for pH/ORP, conductivity and dissolved oxygen measurement in a wide range of industrial processes. It is the best choice for demanding applications such as hygienic environments, hazardous areas and functional safety areas. The intuitive Liquiline operating concept simplifies operation, handling and maintenance, saving time. Easy parameter switching and seamless system integration allow flexible and precise adaptation to the measuring task.
Benefits:
-
Quick setup with jog dial, simple commissioning
-
Pre-calibrated Memosens sensors for plug-and-play
-
Modular design reduces spare parts inventory
-
Predictive maintenance system detects whether the sensor needs cleaning, calibration or replacement
Application areas:
The Liquiline CM42 transmitter is suitable for process measurement, including the following industries and their utilities:
-
Chemical industry
-
Food & Beverage
-
Life sciences
-
Power & Energy
-
Oil & Gas
-
Primary raw materials & metallurgy
The Liquiline CM42 is compatible with the following communication protocols and interfaces:
-
0/4...20 mA
-
HART
-
PROFIBUS PA
-
FOUNDATION Fieldbus
International explosion protection approvals such as IECEx, ATEX, FM, CSA, TIIS and NEPSI; suitable for explosion hazardous areas.
E+H product model configurator
Please enter the product model to configure
Product comparison
Please enter the product models to be compared in the input boxes below; up to three products can be compared
Technical information
Technical data
Documents/Manuals/Software
Accessories/Spare parts
A
Measuring principle video
Source: public information from the Endress+Hauser website
Technical Data
CompareConductivity
| Measuring Principle | Conductive |
| Application | Chemical processes, pharmaceuticals industry, foodstuff technology, applications in hazardous areas |
| Characteristic | Liquiline M CM42 is a modular two-wire transmitter for all areas of process engineering |
| Measuring principle | Resistance measurement |
| Design | Depending on the ordered version, Liquiline M CM42 has one or two analog current outputs or it can be connected to field busses as per FOUNDATION Fieldbus, PROFIBUS PA and HART protocol |
| Material | Plastic or stainless steel housing with EPDM sealings |
| Dimension | Plastic housing: 144 x 144 x 148 mm 5.67 x 5.67 x 5.83 inch Stainless Steel: 174 x 174 x 134 mm 6.85 x 6.85 x 5.28 inch |
| Temperature sensor | Applicable: Pt100, Pt1000 |
| Ex certification | ATEX, IECEx, FM, CSA, NEPSI, EAC, UKEx, JPN Ex |
| Ingress protection | IP66/67, NEMA 4X |
| Input | One channel transmitter for Memosens and analog (pH, ORP, conductivity) |
| Output / communication | 1/2 x 4 to 20 mA, HART, Profibus PA, FF Additional second output possible, also later |
ORP / Redox
| Measuring Principle | Sensor ORP / Redox |
| Application | Chemical processes, pharmaceuticals industry, foodstuff technology, applications in hazardous areas |
| Characteristic | Liquiline M CM42 is a modular two-wire transmitter for all areas of process engineering |
| Measuring principle | ORP measurement |
| Design | Depending on the ordered version, Liquiline M CM42 has one or two analog current outputs or it can be connected to field busses as per FOUNDATION Fieldbus, PROFIBUS PA and HART protocol |
| Material | Plastic or stainless steel housing with EPDM sealings |
| Dimension | Plastic housing: 144 x 144 x 148 mm 5.67 x 5.67 x 5.83 inch Stainless Steel: 174 x 174 x 134 mm 6.85 x 6.85 x 5.28 inch |
| Temperature sensor | Applicable: Pt100, Pt1000, NTC 30K |
| Ex certification | ATEX, IECEx, FM, CSA, NEPSI, EAC, UKEx, JPN Ex |
| Ingress protection | IP66/67, NEMA 4X |
| Input | One channel transmitter for Memosens and analog (pH, ORP, conductivity) |
| Output / communication | 1/2 x 4 to 20 mA, HART, Profibus, FF Additional second output possible, also later |
Oxygen
| Measuring Principle | Amperometric oxygen measurement |
| Application | Chemical processes, pharmaceuticals industry, foodstuff technology, applications in hazardous areas |
| Characteristic | Liquiline M CM42 is a modular two-wire transmitter for all areas of process engineering |
| Measuring principle | Connection of oxygen sensors with Memosens coupling |
| Design | Depending on the ordered version, Liquiline M CM42 has one or two analog current outputs or it can be connected to field busses as per FOUNDATION Fieldbus, PROFIBUS PA and HART protocol |
| Material | Plastic or stainless steel housing with EPDM sealings |
| Dimension | Plastic housing: 144 x 144 x 148 mm 5.67 x 5.67 x 5.83 inch Stainless Steel: 174 x 174 x 134 mm 6.85 x 6.85 x 5.28 inch |
| Ex certification | ATEX, IECEx, FM, CSA, NEPSI, EAC, UKEx, JPN Ex |
| Ingress protection | IP66/67, NEMA4X |
| Input | One channel transmitter for Memosens and analog (pH, ORP, conductivity) |
| Output / communication | 1/2 x 4 to 20 mA, HART, Profibus PA, FF Additional second output possible, also later |
pH
| Measuring Principle | ISFET |
| Application | Chemical processes, pharmaceuticals industry, foodstuff technology, applications in hazardous areas |
| Characteristic | Liquiline M CM42 is a modular two-wire transmitter for all areas of process engineering |
| Measuring principle | Potentiometric pH measurement |
| Design | Depending on the ordered version, Liquiline M CM42 has one or two analog current outputs or it can be connected to field busses as per FOUNDATION Fieldbus, PROFIBUS PA and HART protocol |
| Material | Plastic or stainless steel housing with EPDM sealings |
| Dimension | Plastic housing: 144 x 144 x 148 mm 5.67 x 5.67 x 5.83 inch Stainless Steel: 174 x 174 x 134 mm 6.85 x 6.85 x 5.28 inch |
| Temperature sensor | Applicable: Pt100, Pt1000, NTC 30K |
| Ex certification | : ATEX, IECEx, FM, CSA, NEPSI, EAC, UKEx, JPN Ex |
| Ingress protection | IP66/67, NEMA 4X |
| Input | One channel transmitter for Memosens and analog (pH, ORP, conductivity) |
| Output / communication | 1/2 x 4 to 20 mA, HART, Profibus PA, FF Additional second output possible, also later |
Related Models
Case Studies
市政污水处理污水处理厂 · 多参数应用案例
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，对多参数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多参数，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 · 多参数应用案例
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，对多参数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多参数，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 · 多参数应用案例
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，对多参数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多参数，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 · 多参数应用案例
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，对多参数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多参数，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。
