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7/31/2019 Analizadores de Conductividad Endress Hauser

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TechnicalInformationTI 193C/24/ae

Conductivity Measurement

liquisys M CLM 223 / 253

Conductivity and Resistance Controller

Liquisys M CLM 253Liquisys M CLM 223

Due to the modularity of its design, theLiquisys M CLM 223 / 253 controller canbe adapted to a wide range of customerneeds. The basic version, which pro-

vides simple measuring and alarmsignaling functions, can be equippedwith additional software and hardwaremodules to match specific applications.Retrofitting of expansion modules is alsopossible.

Areas of application Ultrapure water Water treatment Ion exchangers Reverse osmosis Cooling water desalinization USP and WFI water

Benefits at a glance Measuring controller in field or

panel-mounted housing

Universal application Conductivity and specific resistance

via software switching

Transmitters for contacting orelectrodeless sensors

Ultrapure water compensation acc.to IEC 746 (contacting only)

USP 24 Stage 1 compliant Simple handling

Logically arranged menu structurewith plain text in 6 languagesfacilitates instrument configuration

Large, two-line display indicatesmeasured value and temperature atthe same time

Calibration via CAL key Safe Operation

Overvoltage (lightning) protectionaccording to EN 61000-4-5

Direct access for manual contactcontrol

User-defined alarm configuration foralarm contact and error current

CSA GP and CE approved

The basic unit can be extended with:

2 or 4 contacts for use as:

Limit contacts (also for temperature)

PID controller

Timer for simple rinse processesComplete cleaning with Chemoclean

Plus package:

Any current output configuration viatable

Automatic initiation of cleaning incase of alarm or limit violation

Ultrapure water monitoring withpre-alarm acc. to USP 24 (contactingonly)

Polarization detection (contacting only

Concentration measurement(% / TDS)

Temperature compensation via table Live check of measuring cell

HARTor Profibus PA and DP 2nd current output for temperature

The Power of Know How


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Details Liquisys M CLM 223 / 253 provides asolution for all drinking water

processing, process water and wastewater treatment applications.

Contacting or electrodeless

Two instrument versions formeasurement with contacting (two-

electrode) measuring cells or

electrodeless sensors are available. Theuse of electrodeless sensors that are

less sensitive to soiling than contactingmeasuring cells is recommended for

concentration measurement or adheringmedia.

Features of the basic version (CD / ID):

Measurement of conductivity or

specific resistanceThis is selected via the menu. During

measurement, the value measured can

be displayed in the other measuringmode. The temperature is displayed at

the same time if desired.

Temperature compensation selectionsavailable are linear ( = 0 means no

temperature compensation) or specialultrapure water compensation (NaCl

curve) according to IEC 746. Thereference temperature is 77 F (25 C).

Different alarms are required depending

on application and operator. Therefore

the Liquisys M CLM 223 / 253 permitsindependent configuration of the alarm

contact and error current for eachindividual error. Unnecessary or

undesirable alarms can be suppressedin this manner.

Up to four contacts can be used as limit

contacts (also for temperature), to

implement a PID controller or forcleaning functions.

Direct manual operation of the

contacts (bypassing the menu) providesquick access to limit, control or cleaning

contacts, permitting speedy correction ofdeviations.

The serial numbers of the instrumentand modules and the order code can be

called up on the display.

The cell constant can be edited andeven calibrated for demanding special

applications.

The CS / IS version provides additionalfunctions:

Electrodeless sensors must normally be

installed in pipes at a required minimumdistance from the pipe wall. If this

minimum distance is not observed, themeasured value changes. The built-in

adaptive calibration feature can be

used to compensate for this once thesensor is installed.

In order to display wide measuring

ranges while still achieving a highresolution in certain ranges, the current

output can be configured as requiredvia a table. This permits bilinear or

quasi-logarithmic curves.

The live check issues an alarm whenthe sensor signal does not change over

a defined period of time. This may be

caused by blocking, passivation, orseparation from the process.

Ultrapure water monitoring according to

USP 24 means that the uncompensatedconductivity and the temperature are

measured and compared to a table. TheLiquisys M CLM 223 / 253 (contacting)comes with this function, and the

user-adjustable pre-alarm indicatesundesirable operating values in due

time. Full compliance with USP 24requires the use of a precisely calibrated

measuring cell, for example, the CLS 15.

The conversion from conductivity toconcentration is effected using four

user-definable concentration curves.

This permits concentrations to bedisplayed directly in % or ppm, i.e. as

TDS (total dissolved salts solids).

E 017

E 123

- - - -

on

off

on

off

on

off

2.4 / 22 mA

off

on

Timer

t

off

off

on

on

Chemoclean

t

Instrument DATA

eS r Nr I1

1 5 6 3 48 3

t0

20

mA

2

0

20

mA

The sensor and process checksystem also indicates any polarization

of the contacting measuring cell. Since

there is no subdivision into severalmeasuring ranges (the full range from

0 to 2000 mS/cm is available at alltimes), the measuring range is limited by

the cell constant only. Polarization

detection then determines whether ornot the working range determined by the

measuring cell is exceeded.


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ENDRESS+HAUSERLIQUISYS

CAL REL

REL1

REL1

ALARM

REL2

REL2E


CAL REL

REL1

REL1

ALARM

REL2

REL2E

Basic Version and

Plus Package

Measuring and Control

System

A complete measuring system

comprises:

the conductivity controller Liquisys MCLM 223 or CLM 253

a conductivity measuring cell with orwithout integrated temperature sensor

an immersion, flow or retractableholder

Options:

an extension cable CYK 71 (contactingsensors) or CLK 5 (electrodeless

sensors) and

junction box VBM

Up to 4 relays

Alarm contact

Signal output 1:

conductivitySignal output 2:temperature (optional)

Aux. 15 V supply voltage

2 digital inputs

Power supply (mains)

Complete measuring systemswith Liquisys S CLM 223 / 253

3

Immersionholder CYA 611

Liquisys M CLM 223

Liquisys M CLM 253

CLS 15

CLS 50

MeasuringCable

Measuring Ranges of

Conductivity Sensors

Basic Version With plus package (CS / IS version)

Alarm signaling Alarm signaling

MEASUREMENT

CALIBRATION of cell constant Adaptive CALIBRATION (electrodeless sensors)CALIBRATION of residual coupling (toroidal sensors)

POLARIZATION detectionRead instrument DATA (contacting cells)

LIVE CHECK of sensor

Linear CURRENT OUTPUTCURRENT OUTPUT simulation CURRENT OUTPUT programmable (table)

1 programmable ALARM CONTACT(contact and error current)

Additional features Additional features

Controlling Controlling

2 CHANGEOVER CONTACTS for

- Measuring parameter limit Measurement according to USP 24 with- Temperature limit pre-alarm (contacting cells)- PID controller Automatic cleaning triggered by alarm or limit- Timer for cleaning violation

Additional features Additional features

Cleaning Cleaning

2 more CHANGEOVER CONTACTS (total of 4) for

- Measuring parameter limit- Temperature limit Cleaning triggered externally or automatically- PID controller by alarm or limit violation- Chemoclean cleaning

(water and cleaning agent)


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1 7 3 4m S/cm

ENDRESS+HAUSER

LIQUISYS M

CAL REL

REL1

REL1

ALARM

REL2

REL2E

Setpoint

Operation

Liquid crystal displayfor display ofmeasured values,configuration dataand current menu field

4 main control keys forcalibration and instrumentconfiguration

LED indicatorsfor switched limitoutputs

Field for userlabeling

Key for manualrelay switching

LED indicator foralarm function

User interface:Display and keys

Everything at a glance

The display simultaneously shows the

current measured value and thetemperaturethe essential processdata. Brief informational texts in theconfiguration menu provide assistance

with parameter configuration.

Intelligent and simple

All instrument control functions are

arranged in a logical menu structure.Following access code entry, the

individual parameters can be easilyselected and modified as needed.

Overview of Liquisys MCLM 223 / 253 menu.This covers all theoptions that can beinstalled (see page 2Details).

4

Key for switchingbetween automatic andmanual relay operation


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15 V

85

86

S

10 to 50 V

93

94

L+

L

L

N

~ =

41

42

43

47

57

51

54

48

58

52

55

49

59

53

56

mA

10 to 50 V

81

34

33

82

J

JJ

mA

32

31

11

84

84

15

16

83

83

12

13

k

Electrical Connection

Left:Liquisys M CLM 223,connections on the rearof the instrument

Right:Liquisys M CLM 253,rear of instrument withreplaceable electronics

box (E)

Electrical connection ofLiquisys M CLM 223 / 253

All connections to the panel-mountedinstrument CLM 223 are established via

the terminal strips on the rear.

In the case of the field instrument CLM

253, all wires (including the measuringcell cable) are connected to terminals in

a separate wiring compartment.

All the wiring can remain in place if theinstrument needs repair because all

repairs are limited to assemblyreplacement. So, dismantling the

instrument and rewiring are no longernecessary.

Contactingmeasuringcell

Signal output 1:conductivity

Signal output 2:temperature(optional)

Digital input 1

Digital input 2

Aux. voltageoutput

Alarm*

Relay 1*

Relay 2*

Relay 3*

Relay 4*

optional

*Contactstatus shown:no current orfault present

Power supply

E

5

(alternative)

Electrodelesssensor

Temperaturesensor Pt 100


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ENDRESS+HAUSER

LIQUISYS

CAL REL

REL1

REL1

ALARM

REL2

REL2E


CAL REL

REL1

REL1

ALARMREL2

REL2E

Dimensions

3.54(90)

5.47(139)

0.24

(6)

3.78(96)

Dimensions ofLiquisys M CLM 253

Dimensions ofLiquisys M CLM 223

6

9.72(247)

0.24(6)

4.53

(115)

6.18(157)

0.43

(11)

2.75(70)

2.75

(70)6.06(154)6.69(170)


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Mounting of CLM 223 The panel-mounted version is mountedusing the supplied tensioning screws.

The required overall mounting depth isapproximately 6.89 in. (175 mm).

Installation of panel-mounted housing

7

3.62+0.02

(92+0.5)

3.62+0.02

(92+0.5)

3.78(96)

max. 1.77(45)

0.24(6)

5.47(139)

approx.0.98(25)

1.30(33)

2.24(57)

3.54(90)

Flat gasket(included in delivery)

Mounting cutoutaccording toDIN 43700


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6.18(157)

0.31(8)

0.63(16)

4.53(115)

Mounting of

Liquisys M CLM 253

8

Wall mountingScrews: 0.24 (6 mm)Anchors: 0.31 (8 mm)

Mounting on cylindricalpipes (shown withweather protection coverinstalled on right)

Post mounting kit forinstallation of field housingon cylindrical pipes(horizontal or vertical,max. 2.36 (60 mm);see Accessories)

3.54(90)

1.18(30)

0.31(8)

2.36(60)

0.24(M 6)

3.54(90)

2.76(70)

0.31(8)

0.24(6)2.76

(70)3.54(90)

2.76(70)


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Manufacturer Endress+Hauser

Product designation Liquisys M CLM 223Liquisys M CLM 253

Measured quantities conductivity, resistance, temperature

Contacting conductivity/resistance measurement

Measuring range conductivity: 0 to 2000 mS/cm (uncompensated)resistance: 0 to 86 mcm

Usable cell constant k= 0.0025 to 99.99 cm-1

Maximum length of cable to measuring cell conduct ivity: 330 ft . (100 m)resistance: 50 ft. (15 m)

Measuring frequency conductivity: 300 to 1000 Hzresistance: 30 to 400 Hz

Toroidal conductivity measurement

Measuring range 0 to 2000 mS/cm (uncompressed)

Usable cell constant k= 0.0025 to 99.99 cm-1

Maximum length of cable to measuring cell 200 ft. (60 m) (CLK 5)

Measuring frequency 2 kHz

Minimum span for 0 / 4 to 20 mA signal meas. value betw. 0 and 199.9 S/cm: 20S/cmmeas. value betw. 200 and 1999S/cm: 200S/cmmeas. value betw. 2 and 19.99 mS/cm: 2mS/cmmeas. value betw. 20 and 2000 mS/cm: 200 mS/cm

Temperature measurement

Temperature sensor Pt 100

Measuring range -31 to +482 F (-35 to +250 C)

Temperature offset range 68 F ( 20 C)

Temperature compensation

Compensation types linear, NaCl, table,(with contacting cells only: ultrapure water)

Range -31 to +482 F (-35 to +250 C)

Reference temperature 77 F (25 C)

Digital inputs 1 and 2

Voltage 10 to 50 VDC

Current consumption max. 10 mA

Conductivity/resistance signal output

Current range 0 / 4 to 20 mA, galvanically separated;error current 2.4 / 22 mA

Load max. 500

Output range adjustable

Isolation voltage max 350 Vrms

/ 500 V DC

Overvoltage (lightning) protection acc. to EN 61000-4-5: 1995

Temperature signal output (optional)

Current range 0 / 4 to 20 mA, galvanically separated

Load max. 500

Output range adjustable, 10 to 100% of upper range value

Isolation voltage max 350 Vrms / 500 V DCOvervoltage (lightning) protection acc. to EN 61000-4-5: 1995

Auxiliary voltage output

Output voltage 15 V 0.6 V

Output current max. 30 mA

Contact outputs (floating changeover contacts)

Switching current with ohmic load (cos = 1) max. 2 A

Switching current with inductive load (cos = 0.4) max. 2 A

Switching voltage max. 250 V AC, 30 V DC

Switching power with ohmic load (cos = 1) max. 1250 VA AC, 150 W DC

Switching power with inductive load (cos = 0.4) max. 500 VA AC, 90 W DC

9

Technical DataGeneral specifications

Input

Output


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Technical Data

(continued)Output (continued)

Accuracy

Ambient conditions

Physical data / design

Power requirements

10

Limit contactor

Pickup / dropout delay 0 to 2000 seconds

Controller

Function (adjustable) pulse length / pulse frequency controller

Controller response PID

Proportional band Kp: 0.10 to 10.00

Period for pulse length controller 0.5 to 999.9 seconds

Frequency for pulse frequency controller 60 to 180 min *

Alarm

Function (switchable) steady / fleeting contact; normally closed / open

Alarm threshold adjustment range conductivity / resistance / temperature:complete measuring range

Alarm delay 0 to 2000 seconds

Conductivity measurement

Deviation of indication1 max. 0.5% of measured value 4 digits

Reproducibility max. 0.2% of measured value 2 digits

Measurement deviation1, conductivity signal output max. 0.75% of current output range

Temperature measurement

Resolution 0.2 F or 0.1 C

Deviation of indication1 max. 1.0% of measuring range

Measurement deviation1, temperature signal output max. 1.25% of current output range

Nominal operating temperature 14 to 131 F (-10 to +55 C)

Ambient temperature ( limit operating conditions) -4 to 140 F (-20 to +60 C)

Storage and transport temperature -13 to 149 F (-25 to +65 C)

Relative humidity (nominal operating conditions) 10 to 95%, non-condensing

Protection class of panel-mounted unit NEMA 3S (IP 54 front, IP 30 housing)

Protection class of field housing NEMA 4X (IP 65)

Electromagnetic compatibility interference emission acc. to EN 50081-1: 1992interference immunity acc. to EN 50082-2: 1995

Dimensions of panel-mounted unit (H x W x D) 3.78 x 3.78 x 5.71 in. (96 x 96 x 145 mm)

Installation depth approx. 6.89 in. (175 mm)

Dimensions of field housing (H x W x D) 9.72 x 6.69 x 4.53 in. (247 x 170 x 115 mm)

Weight of panel-mounted unit max. 1.54 lb. (0.7 kg)

Weight with field housing max 5.07 lb. (2.3 kg)

Display LC display, two lines, five and nine digits, withstatus indicators

Materials

Housing of panel-mounted unit polycarbonate

Front membrane polyester, UV-resistant

Field housing ABS PC Fr

Supply voltage 100 / 115 / 230 V AC +10 / -15%, 48 to 62 Hz24 V AC/DC +20 / -15%

Power consumption max. 7.5 VA

Fuse protection fine-wire fuse, medium time-lag, 250 V / 1 A

* acc. to IEC 746-1, for nominal operating conditions

Subject to modifications.


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AccessoriesMounting accessories

Type Features Order number

Pendulum For pendulum suspension of assemblies 50080196

frame e.g. CYA 611

Material: 304 SS

Post mounting Kit for mounting of field housing on 50086842kit horizontal or vertical pipes, max.

diameter, 2.5 (60 mm)

Material: 304 SS

Holders

Type Features Applications

CYA 611 Immersion assembly with G 1, G 3/4 Waste water, water

or 3/4 NPT thread

Two-electrode conductivity measuring cells (selection)

Type Features Applications

CLS 15 Cell constant: k = 0.1 cm-1 or 0.01 cm-1 Reverse osmosis

Process connections: 3/4 NPT, 1-1/2 filter, ion exchangerTri-clamp

CLS 19 Cell constant: k = 0.1cm-1 or 0.01 cm-1 Boiler feed, control

Process connections: 3/4 NPT

CLS 21 Cell constant: k = 1 cm-1 Service water, boiler

Process connections: 1 NPT and feed water2 Tri-clamp

Electrodeless conductivity measuring sensorsType Features Applications

CLS 50 Cell constant: k=2 cm-1 Concentration

Process connections: G 3/4, 1 NPT measurement,2 ANSI flange incl. 16.4 ft (5 m) attached product monitoring,cable chemical industries

CLS 52 Cell constant: k=5.9 cm-1 Concentration

Process connections: 2 Tri-clamp measurement,and Perlick product monitoring,

chemical industries,

food industries

11

Cables

Type Features Order number

CYK 71 Standard measuring cable for connection 50085333

of two electrode measuring cells with andwithout Pt 100 (also usable for extension)

CLK 5 Extension cable for CLS 50 and CLS 52 50085473

sensors

VBM Junction box NEMA 4X 51500177


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