Technical Data
CompareORP / Redox
| Measuring Principle | Sensor ORP / Redox |
| Application | Water, waste water, process |
| Characteristic | 4-wire transmitter |
| Design | pH/ORP-field housing made of PC/ABS |
| Material | PC/ABS-housing |
| Dimension | 247x170x115mm |
| Temperature sensor | Display and current output |
| Ex certification | No |
| Ingress protection | No |
| Input | One-channel-transmitter |
| Output / communication | 0/4-20mA, Hart, Profibus. |
| Certificates, declarations and approvals | CSA Gen. Purpose. |
pH
| Measuring Principle | Potentiometric |
| Application | Water, waste water, process |
| Characteristic | 4-wire transmitter |
| Design | pH/ORP field housing made of PC/ABS |
| Material | PC/ABS housing |
| Dimension | 247x170x115mm (9.63x6.63x4.48inch) |
| Temperature sensor | Display and current output |
| Ex certification | No |
| Ingress protection | No |
| Input | One-channel-transmitter |
| Output / communication | 0/4-20 mA, Hart, Profibus |
| Certificates, declarations and approvals | CSA Gen. purpose |
The Liquisys CPM253 is a standard pH/ORP transmitter for analog and digital Memosens sensors. Thanks to continuous plausibility checks and checks of the measuring process and the sensor, it increases operating safety. Whichever hardware and software modules are selected, e.g. relays and bus communication, it adapts perfectly to the measuring task. It also allows the transmitter to be upgraded at any time, and its simple menus and factory calibration make configuration and operation fast and convenient.
Benefits
Higher operating safety: continuous process check system, user-defined alarm settings and an optimized Memosens interface for reliable sensor connection.
Reliable self-monitoring: sensor check system for pH electrode calibration and calibration plausibility check.
Easy to operate and maintain: intuitive user interface, precalibrated Memosens sensors with hot plug support and direct manual contact control.
Reduced maintenance effort: automatic cleaning triggered by alarms or limit switches (using Chemoclean).
Suitable for a wide range of applications: various extension options, such as P(ID) controllers, timers, etc., for flexible use in all processes.
Application areas
The Liquisys CPM253 transmitter can be used with all pH/ORP glass electrodes and ISFET electrodes in non-hazardous areas, and is suitable for the following industries and applications:
Chemical
Food & Beverage
Power & Energy
Water and wastewater
Primary raw materials and metallurgy
The Liquisys CPM253 has the following protocols and interfaces:
0/4...20 mA
HART
PROFIBUS DP
PROFIBUS PA
Spare Parts & Accessories 35
35 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 51501068 | KIT CXM253 Instrument PanelKIT CXM253 housing cover | Details |
| 71071446 | Kit CxM253: Front foil + 6 key lifters | Details |
| 51501073 | CXM253 Internally Mounted ComponentKIT CXM253 Internal housing parts | Details |
| 51502184 | Transmitter connection head | Details |
| 51501072 | CXM253 Mounting Base PlateKIT CXM253 bottom of housing | Details |
| 51501069 | Mounting hingeKIT hinges | Details |
| 51501087 | CXM253 Grounding Terminal BlockKIT CXM253 Ground terminal strip | Details |
| 51501079 | CXM223 Terminal Block Power SupplyKIT CXM253 terminal strip power supply | Details |
| 51501074 | CXM253 Flat CableKIT CXM253 Ribbon cables | Details |
| 50086842 | LIQUISYS transmitter standpipe mounting kitfor mounting the field-transmitters on horizontal or vertical pipes (max. diam. 60 mm). Material: stainless steel V2A | Details |
| 51501081 | CPM2X3 Main BoardKIT CPM2X3 Central module I1 | Details |
| 51501083 | CPM2X3 Main BoardKIT CPM2x3 central module I1 HART | Details |
| 51501082 | CPM2X3 Main BoardKIT CPM2x3 Central modul I2 | Details |
| 51501084 | CPM2X3 Main BoardKIT CPM2x3 central module I2 HART | Details |
| 51501085 | CPM2X3 Main BoardKIT CPM2X3 central module Profibus PA | Details |
| 51502503 | CPM2X3 Main ModuleKit CPM2X3 central module Profibus DP | Details |
| 71134724 | CPM2X3 Main BoardContent: 1x Central module Profibus DP Module name: LSCP-DP qualifired from H/W 2.10 | Details |
| 71134732 | Relay moduleContent: 1x Relay module Profibus DP 2x Relay, 1x Current input DP connection qualified from H/W 2.10 | Details |
| 51507096 | MKP2 accessory kit, pH input module MEKKIT MKP2 pH input module MEK | Details |
| 51518244 | Transmitter modulefor pH glass sensor and ORP sensor | Details |
Configurator / Comparison
A
Source: public information from the Endress+Hauser website
Measuring principle video
Click to playManuals & Documents 12
All documents for this model12 documents · click to expand
Liquisys M CPM223/253 操作手册 Chinese
Liquisys M CPM223/253 Operating Instructions English
Operating Instructions Liquisys M CXM223/253 PROFIBUS English
Operating Instructions Liquisys M CPM 223/253 English
Operating Instructions Liquisys M CXM223/253 HART English
技术资料 Liquisys M CPM223/253 Chinese
技术资料 Liquisys M CCM223/253 Chinese
技术资料 Liquisys M CCM223/253 Chinese
技术资料 Liquisys M CPM223/253 Chinese
Liquisys M CPM223/253 Technical Information English
Technical Information CCM 223/ English
Technical Information CCM 223/ English
Case Studies
Municipal Wastewater Treatment · PH — Application Case
Application Context
the inlet, biological and outlet stages of a municipal plant is a typical Municipal Wastewater Treatment duty. The project started from PH, focusing on continuous pH monitoring for neutralisation and compliance control.
Process Constraints
effluent parameters drift and probes foul with sludge and biofilm, and high solids and corrosive fractions, with large diurnal flow swings only amplify it. The PH specification must therefore cover choosing glass or ISFET sensors by temperature, fluoride content and pressure.
Delivery Approach
Delivery was handled as the analyser range — selecting as part of a complete water-analysis system. Execution centred on choosing glass or ISFET sensors by temperature, fluoride content and pressure, together with stable compliance with Grade 1A discharge limits and online data reporting.
Field Results
Operation shows the benefit clearly — tighter dosing control and lower reagent consumption, with confidence in this measuring point improving markedly.
Food & Beverage · PH — Application Case
Customer Profile
The typical setting in Food & Beverage is dosing, pasteurising, filling and CIP stages. The measuring point is PH; the focus is continuous pH monitoring for neutralisation and compliance control.
Key Difficulties
Conditions are syrups, dairy and beverages that scale easily, under strict hygienic requirements and, on top of that, frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, which a standard configuration cannot handle for long. The design therefore starts with choosing glass or ISFET sensors by temperature, fluoride content and pressure.
Implementation
The scope ran through the analyser range: selecting as part of a complete water-analysis system. Technically it hinges on choosing glass or ISFET sensors by temperature, fluoride content and pressure, and on these requirements: food-safety and hygienic design per 3-A / EHEDG.
Customer Benefit
In practice this means tighter dosing control and lower reagent consumption, which cut the workload on the site maintenance team.
Chemical & Pharmaceutical · PH — Application Case
Project Background
The project covers reactors, metering vessels and finished-product tanks. The work centres on PH and the core task is continuous pH monitoring for neutralisation and compliance control.
Operating Challenges
The medium and duty are characterised by highly corrosive media with solvents and crystallisation, partly in explosive atmospheres, and corrosion plus Ex protection shortens instrument life and makes downtime costly. So PH cannot be specified generically — it calls for choosing glass or ISFET sensors by temperature, fluoride content and pressure.
Solution
The Ainstru engineering team worked through the analyser range: selecting as part of a complete water-analysis system. The configuration involves choosing glass or ISFET sensors by temperature, fluoride content and pressure, with these requirements in view: Ex certification and GMP traceability of records.
Results
Since start-up the system has run steadily; the practical result is tighter dosing control and lower reagent consumption.
Power & Energy · PH — Application Case
Project Overview
The site is boiler feedwater, turbine condensate and FGD/DeNOx systems. The customer wanted PH properly configured on the existing plant, with the aim of continuous pH monitoring for neutralisation and compliance control.
Technical Challenges
What actually causes trouble is high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. All of this means the PH configuration has to involve choosing glass or ISFET sensors by temperature, fluoride content and pressure.
Configuration
Supply and installation were organised through the analyser range: selecting as part of a complete water-analysis system. On site this meant choosing glass or ISFET sensors by temperature, fluoride content and pressure, checked line by line against: compliance with power-industry codes and unit availability targets.
Performance
After commissioning the outcome is tighter dosing control and lower reagent consumption, and the readings are now used for process tuning.
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