Technical Data
CompareConductivity
| Measuring Principle | Conductive |
| Application | Water, waste water, process |
| Characteristic | 4-wire transmitter with a two-line display |
| Design | Conductivity transmitter in a PC/ABS-field housing |
| Material | PC/ABS |
| Dimension | 247x170x115 mm |
| Temperature sensor | Display and current output |
| Ex certification | No |
| Ingress protection | IP65 |
| Input | One-channel transmitter |
| Output / communication | 0/4-20mA, Hart, Profibus. |
| Certificates, declarations and approvals | CSA Gen. Purpose. |
The Liquisys CLM253 is a standard transmitter for all analog conductivity sensors. Continuous plausibility, process and sensor checks increase operational safety. No matter which of the numerous hardware and software modules you choose, such as 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.
Advantages
Greater operational safety: continuous process checking system, user-defined alarm settings, calibration plausibility checks
Extensive functions: conductivity, resistivity and concentration measurement, ultrapure water monitoring in accordance with USP and EP
Convenient operation and service: intuitive user interface, simple calibration, manual contact control
Reduced maintenance: automatic cleaning function triggered by alarm and limit switches (with Chemoclean)
Suitable for a wide range of applications: numerous expansion options such as P(ID) controllers, timers, etc., for all processes
Application areas
The Liquisys CLM253 transmitter can be used with various analog conductivity sensors and is suitable for non-hazardous area measurement in the following industries and utilities:
Chemical industry
Food & beverage
Life sciences
Power & energy
Water & wastewater
Primary materials & metallurgy
The Liquisys CLM253 uses the following communication protocols and interfaces:
0/4...20 mA
HART
PROFIBUS DP
Spare Parts & Accessories 37
37 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 |
| 51501210 | CLM2x3 Main BoardKIT CLM2x3 Central module I1 conductive | Details |
| 51501213 | CLM2X3 Conductive ModuleKIT CLM2X3 Conductive modul I1 HART | Details |
| 51501212 | CLM2X3 Conductive ModuleKIT CLM2X3 Conductive module I2 | Details |
| 51501214 | CLM2X3 Conductive ModuleKIT CLM2X3 Conductive module I2 HART | Details |
| 51501215 | CLM2X3 Main ModuleKIT CLM2X3 cen. module Profibus PA cond. | Details |
| 51502502 | Kit CLM2X3 Main ModuleKit CLM2X3 central module ProfibusDPkond | Details |
| 71134726 | Kit CLM2x3: Central module, conductivity, PBDP; H/W2.1xContent: 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 |
| 51501216 | CLM2x3 Inductive ModuleKIT CLM2x3 inductive module I1 | Details |
| 51501219 | CLM2x3 Inductive ModuleKIT CLM2x3 Inductive modul I1 HART | Details |
Configurator / Comparison
Accessories / Spare parts
A
Source:Endress+Hauserpublic information from the website
Measuring principle video
Click to playManuals & Documents 9
All documents for this model9 documents · click to expand
Liquisys M CLM223/253 操作手册 Chinese
Liquisys M CLM223/253 Operating Instructions English
Operating Instructions Liquisys M CXM223/253 PROFIBUS English
Operating Instructions Liquisys M CLM 223/253 English
Operating Instructions Liquisys M CXM223/253 HART English
技术资料 Liquisys M CLM223/253 Chinese
技术资料 Liquisys M CLM223/253 Chinese
Liquisys M CLM223/253 Technical Information English
Technical Information LIQUISYS English
Case Studies
Municipal Wastewater Treatment · conductivity — Application Case
Customer Profile
The typical setting in Municipal Wastewater Treatment is the inlet, biological and outlet stages of a municipal plant. The measuring point is conductivity; the focus is measuring conductivity to judge water purity or chemical concentration.
Key Difficulties
Conditions are high solids and corrosive fractions, with large diurnal flow swings and, on top of that, effluent parameters drift and probes foul with sludge and biofilm, which a standard configuration cannot handle for long. The design therefore starts with choosing two- or four-electrode cells by range and corrosivity.
Implementation
The scope ran through the analyser range: selecting as part of a complete water-analysis system. Technically it hinges on choosing two- or four-electrode cells by range and corrosivity, and on these requirements: stable compliance with Grade 1A discharge limits and online data reporting.
Customer Benefit
In practice this means stable concentration control and less reagent and discharge waste, which cut the workload on the site maintenance team.
Food & Beverage · conductivity — Application Case
Project Background
The project covers dosing, pasteurising, filling and CIP stages. The work centres on conductivity and the core task is measuring conductivity to judge water purity or chemical concentration.
Operating Challenges
The medium and duty are characterised by syrups, dairy and beverages that scale easily, under strict hygienic requirements, and frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles. So conductivity cannot be specified generically — it calls for choosing two- or four-electrode cells by range and corrosivity.
Solution
The Ainstru engineering team worked through the analyser range: selecting as part of a complete water-analysis system. The configuration involves choosing two- or four-electrode cells by range and corrosivity, with these requirements in view: food-safety and hygienic design per 3-A / EHEDG.
Results
Since start-up the system has run steadily; the practical result is stable concentration control and less reagent and discharge waste.
Chemical & Pharmaceutical · conductivity — Application Case
Project Overview
The site is reactors, metering vessels and finished-product tanks. The customer wanted conductivity properly configured on the existing plant, with the aim of measuring conductivity to judge water purity or chemical concentration.
Technical Challenges
What actually causes trouble is highly corrosive media with solvents and crystallisation, partly in explosive atmospheres, and corrosion plus Ex protection shortens instrument life and makes downtime costly. All of this means the conductivity configuration has to involve choosing two- or four-electrode cells by range and corrosivity.
Configuration
Supply and installation were organised through the analyser range: selecting as part of a complete water-analysis system. On site this meant choosing two- or four-electrode cells by range and corrosivity, checked line by line against: Ex certification and GMP traceability of records.
Performance
After commissioning the outcome is stable concentration control and less reagent and discharge waste, and the readings are now used for process tuning.
Power & Energy · conductivity — Application Case
Site Conditions
This is a Power & Energy customer whose plant is at boiler feedwater, turbine condensate and FGD/DeNOx systems. The main task was measuring conductivity to judge water purity or chemical concentration.
The Problem
The difficulty lies in high temperature and pressure with both steam and saline water; at the same time drift under high temperature and pressure, with very costly unplanned outages. Specification therefore means choosing two- or four-electrode cells by range and corrosivity.
What We Did
We took a analyser range approach — selecting as part of a complete water-analysis system. Delivery was built around choosing two- or four-electrode cells by range and corrosivity, with point-by-point checks on: compliance with power-industry codes and unit availability targets.
Operating Outcome
In service the system performs as intended — stable concentration control and less reagent and discharge waste, with routine maintenance falling noticeably.
