Technical Data
CompareOxygen
| Measuring Principle | Amperometric oxygen measurement |
| Application | Water, waste water, process |
| Characteristic | 4-wire transmitter with a two-line display |
| Design | Dissolved oxygen transmitter in a panel housing. |
| Material | Panel housing |
| Dimension | 96mm x 96mm x 146mm(built in depth) 3.74x3.74x5.61inch( built in depth) |
| Temperature sensor | Display and current output |
| Connection | IP54 |
| Input | 1-channel transmitter |
| Output / communication | 0/4-20mA, Hart, Profibus. |
| Certificates, declarations and approvals | CSA Gen. Purpose |
The Liquisys COM223 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
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Higher operational safety: continuous process check system, user-defined alarm settings, calibration plausibility check
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Reliable dissolved oxygen control: current input for flow monitoring with controller switch-off and feedforward control
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Simple operation and maintenance: simple one-point calibration in air, oxygen-saturated water or medium, direct manual touch control
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Reduced maintenance: automatic cleaning function triggered by alarm or limit switches (using Chemoclean)
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Suitable for various applications: multiple expansion functions such as P(ID) controller, timer, etc., flexibly used in various processes
Areas of application
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The Liquisys COM223 transmitter can be used with the Oxymax COS41 and Oxymax COS61 dissolved oxygen sensors for environmental industry measurements, such as:
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O2 aeration basin control
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O2 drinking water control and monitoring
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Surface water monitoring
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Process water treatment and monitoring
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O2 control for optimizing fish pond growth conditions
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The Liquisys COM223 uses the following communication protocols and interfaces:
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0/4...20 mA
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HART
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PROFIBUS DP
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PROFIBUS PA
Common model: COM223-DX0005
Spare Parts & Accessories 33
33 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 51500320 | Relay Output ModuleUpgrade of LIQUISYS-M basis version by 2 floating changeover contacts. | Details |
| 51511446 | Relay moduleUpgrade of LIQUISYS-M basis version by 2 floating changeover contacts. | Details |
| 51500321 | Relay Output Circuit BoardUpgrade of LIQUISYS-M basic version by 4 floating changeover contacts. | Details |
| 51511447 | Relay module | Details |
| 51504304 | Relay Output ModuleUpgrade of LIQUISYS-M basic version by 2 contacts and current input 4-20mA. | Details |
| 51504305 | Relay Output ModuleUpgrade of LIQUISYS-M basic version by 4 contacts and current input 4-20mA. | Details |
| 51500317 | CXM2X3 AC Power SupplyKIT CXM2X3 power supply AC | Details |
| 51500318 | CXM2X3 DC Power SupplyKIT CxM2x3 power supply DC | Details |
| 51501075 | CXM223 Housing AccessoryKit CXM223 housing assembly | Details |
| 51501076 | CXM223 mechanical housing componentsKIT CXM223 Mechanical housing parts | Details |
| 51502124 | CXM223 side panelKit CXM223 side wall | Details |
| 51502513 | CXM223 Profibus DP Bottom CoverKit CXM223 End frame Profibus DP | Details |
| 51501078 | CXM223 Terminal BlockKIT CXM223 Terminal strip | Details |
| 51501207 | COM2x3 transmitterKIT COM2x3 O2 transmitter | Details |
| 51501208 | COM2x3 transmitter with air pressureKIT COM2x3 O2 transmitter+air pressure | Details |
| 51506938 | COM2x3 module MKO5 O2/temperature/pressure.KIT COM2x3 module MKO5 O2/temp/press. | Details |
| 51501225 | COM2x3 Main ModuleKIT COM2x3 Central module I1 | Details |
| 51501223 | COM2x3 Main ModuleKIT COM2x3 Central module I1 HART | Details |
| 51501222 | COM2x3 Main ModuleKIT COM2x3 Central module I2 | Details |
| 51501226 | COM2x3 Main ModuleKIT COM2x3 central module I2 HART | Details |
Configurator / Comparison
Source:Endress+Hauserwebsite public information
Measuring principle video
Click to playManuals & Documents 10
All documents for this model10 documents · click to expand
Liquisys M COM223/253 操作手册 Chinese
Liquisys M COM223/253 Operating Instructions English
Operating Instructions Liquisys M CXM223/253 PROFIBUS English
Operating Instructions Liquisys M COM 223/253 English
COM223 English
Operating Instructions Liquisys M CXM223/253 HART English
技术资料 Liquisys M COM223/253 Chinese
技术资料 Liquisys M COM223/253 Chinese
Liquisys M COM223/253 Technical Information English
Technical Information Liquisys English
Case Studies
Municipal Wastewater Treatment · dissolved oxygen — Application Case
Site Conditions
This is a Municipal Wastewater Treatment customer whose plant is at the inlet, biological and outlet stages of a municipal plant. The main task was measuring dissolved oxygen for biological processes and deaeration control.
The Problem
The difficulty lies in high solids and corrosive fractions, with large diurnal flow swings; at the same time effluent parameters drift and probes foul with sludge and biofilm. Specification therefore means choosing membrane or optical sensors by basin depth and cleaning method.
What We Did
We took a analyser range approach — selecting as part of a complete water-analysis system. Delivery was built around choosing membrane or optical sensors by basin depth and cleaning method, with point-by-point checks on: stable compliance with Grade 1A discharge limits and online data reporting.
Operating Outcome
In service the system performs as intended — blowing follows oxygen demand, cutting aeration power noticeably, with routine maintenance falling noticeably.
Food & Beverage · dissolved oxygen — Application Case
Application Context
dosing, pasteurising, filling and CIP stages is a typical Food & Beverage duty. The project started from dissolved oxygen, focusing on measuring dissolved oxygen for biological processes and deaeration control.
Process Constraints
frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, and syrups, dairy and beverages that scale easily, under strict hygienic requirements only amplify it. The dissolved oxygen specification must therefore cover choosing membrane or optical sensors by basin depth and cleaning method.
Delivery Approach
Delivery was handled as the analyser range — selecting as part of a complete water-analysis system. Execution centred on choosing membrane or optical sensors by basin depth and cleaning method, together with food-safety and hygienic design per 3-A / EHEDG.
Field Results
Operation shows the benefit clearly — blowing follows oxygen demand, cutting aeration power noticeably, with confidence in this measuring point improving markedly.
Chemical & Pharmaceutical · dissolved oxygen — Application Case
Customer Profile
The typical setting in Chemical & Pharmaceutical is reactors, metering vessels and finished-product tanks. The measuring point is dissolved oxygen; the focus is measuring dissolved oxygen for biological processes and deaeration control.
Key Difficulties
Conditions are highly corrosive media with solvents and crystallisation, partly in explosive atmospheres and, on top of that, corrosion plus Ex protection shortens instrument life and makes downtime costly, which a standard configuration cannot handle for long. The design therefore starts with choosing membrane or optical sensors by basin depth and cleaning method.
Implementation
The scope ran through the analyser range: selecting as part of a complete water-analysis system. Technically it hinges on choosing membrane or optical sensors by basin depth and cleaning method, and on these requirements: Ex certification and GMP traceability of records.
Customer Benefit
In practice this means blowing follows oxygen demand, cutting aeration power noticeably, which cut the workload on the site maintenance team.
Power & Energy · dissolved oxygen — Application Case
Project Background
The project covers boiler feedwater, turbine condensate and FGD/DeNOx systems. The work centres on dissolved oxygen and the core task is measuring dissolved oxygen for biological processes and deaeration control.
Operating Challenges
The medium and duty are characterised by high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. So dissolved oxygen cannot be specified generically — it calls for choosing membrane or optical sensors by basin depth and cleaning method.
Solution
The Ainstru engineering team worked through the analyser range: selecting as part of a complete water-analysis system. The configuration involves choosing membrane or optical sensors by basin depth and cleaning method, with these requirements in view: compliance with power-industry codes and unit availability targets.
Results
Since start-up the system has run steadily; the practical result is blowing follows oxygen demand, cutting aeration power noticeably.
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