TechnicalInformationTI 200C/24/ae

Turbidity/Suspended Solids

Measurement

liquisys M CUM 223 / 253

Turbidity and Suspended Solids Controller

Liquisys M CUM 253

Liquisys M CUM 223

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

• Waste water treatment plants,suspended solids measurement

• Effluent treatment• Water treatment and monitoring• Drinking water• Surface water: rivers, lakes, ocean• Service water• Indirect discharge• Water recycling

Benefits at a glance

• Measuring controller in field orpanel-mounted housing

• Universal application– One instrument for turbidity and

suspended solids− Units: FNU (formazine standard,

equals NTU), ppm, g/l, % or % SS• Simple handling

– Logically arranged menu structurewith plain text in 6 languagesfacilitates instrument configuration

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

– Ultrasimple calibration with usersamples and alarm signaling forcalibration errors

• Safe Operation– Overvoltage (lightning) protection

according to EN 61000-4-5– Direct access for manual contact

control− User-defined alarm configuration for

alarm contact and error current− Sensors are factory-calibrated with

formazine standard and SiO2

− Automatic sensor self-recognitionwith calibration data transfer

• CSA GP* and CE approved(* plese consult factory)

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 processes− Complete cleaning with

Chemoclean• Plus package:

− Any current output configuration viatable

− Automatic initiation of cleaning incase of alarm or limit violation

− Display in customer units (e.g.density) via table assignment

− Live check of sensor• HART® or Profibus PA and DP• 2nd current output for temperature

The Power of Know How

Details Liquisys M CUM 223 / 253 provides asolution for all drinking waterprocessing, process water and sewagetreatment applications.

Features of the basic version (TU):

Measurement of turbidity orsuspended solidsThis is selected via the menu. Duringmeasurement, the value measured canbe displayed in the other measuringmode. The temperature is displayed atthe same time if desired.

Different alarms are required dependingon application and operator. Thereforethe Liquisys M CUM 223 / 253 permitsindependent configuration of the alarmcontact and error current for eachindividual error. Unnecessary orundesirable alarms can be suppressedin this manner.

Up to four contacts can be used as limitcontacts (also for temperature), toimplement a PID controller or forcleaning functions.

Direct manual operation of thecontacts (bypassing the menu) providesquick access to limit, control or cleaningcontacts, permitting speedy correction ofdeviations.

The serial numbers of the instrumentand modules and the order code can becalled up on the display.

The TS version provides additionalfunctions:

In order to display wide measuringranges while still achieving a highresolution in certain ranges, the currentoutput can be configured as requiredvia a table. This permits bilinear orquasi-logarithmic curves.

The live check issues an alarm whenthe sensor signal does not change overa defined period of time. This may becaused by blocking, passivation, orseparation from the process.

Soiling quickly results in excessivemeasured values. Automatic cleaningprevents alarms and inaccuracy causedby soiling.

In addition to concentration (ppm /% SS), the display can also showother units (e.g. density). A table isused for conversion (calibration in %).

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Instrument DATA

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CAL REL

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ALARMREL2

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Basic version and

plus package

Measuring and control

system

A complete measuring systemcomprises:• the turbidity/suspended solidscontroller Liquisys M CUM 223 orCUM 253

• a turbidity sensor CUS 31 orsuspended solids sensor CUS 41, and

• an immersion, flow or retractableholder

Options:

• extension cable CYK 8, and• junction box VBM.Complete measuring systems

with Liquisys M CUM 223 / 253

3

Immersion holderCYA 611

Liquisys M CUM 223

Flow holder withturbidity sensor CUS 31

Retractable holderCUA 461

Sensor Cable

Basic Version With plus package (TS version)

Alarm signaling Alarm signaling

MEASUREMENT

CALIBRATION (3-pt. / 1-pt. / reflection)

Read instrument DATA LIVE CHECK of sensor

Linear CURRENT OUTPUT CURRENT OUTPUT programmable (table) CURRENT OUTPUT simulation

1 programmable ALARM CONTACT (contact and error current)

Additional features Additional features

Controlling Controlling

2 CHANGEOVER CONTACTS for Concentration measurement with assignment to - Measuring parameter limit other units - Temperature limit - 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)

Up to 4 relays

Alarm contact

Signal output 1:turbidity/suspended solids

Signal output 2:temperature (optional)

Aux. 15 V supply voltage

2 digital inputs

Power supply (mains)

Liquisys M CUM 253

ENDRESS+HAUSERLIQUISYS M

CAL REL

REL1

REL1

ALARMREL2

REL2E

NTU

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 thecurrent measured value and thetemperature – the essential processdata. Brief informational texts in theconfiguration menu provide assistancewith parameter configuration.

Intelligent and simple

All instrument control functions arearranged in a logical menu structure.Following access code entry, theindividual parameters can be easilyselected and modified as needed.

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

4

SETUP 1

SETUP 2

ALARM

CHECK

RELAY

CONCENTRATION

SERVICE

CURRENT OUTPUT

Selection of measurement type and unit, adjustment of measuredvalue damping

Adjustment of current output assignment, curve and simulation for verification

Adjustment of wiper, of calibration data set used and of temperaturemeasurement

User adjustment of errors to switch relay or generate error current(S version: automatic cleaning trigger in the event of an alarm)

Adjustment of live check alarm

Up to 4 relays may be configured as limit contacts, a PID controller, timeror for chemical cleaning (S version: automatic cleaning trigger in caseof limit violation)

Adjustment to external measurement / reference measurement

In addition to measurement in the basic units (FNU / ppm / % SS), theconcentration of a substance can be displayed in different units (e.g. density)with user-defined assignments to these base units (table)

Selection of language version, display of software or hardware serialnumbers, entry of access codes

CALIBRATION

OFFSET

Three-point calibration, one-point calibration, reflection adaptation

Current temperature display can be suppressed by pressing the PLUS key

Display of active errors (sequence according to priority)

MEAS. VALUE

TEMPERATURE

Display

Key for switchingbetween automatic andmanual relay operation

L+

L–

L

N

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41

42

43

47

57

51

54

48

58

52

55

49

59

53

56

15 V85

86

10 to 50 V

93

94

mA

10 to 50 V

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33

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32

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Electrical connection

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

Right:Liquisys M CUM 253,rear of instrument withreplaceable electronicsbox (E)

Electrical connection ofLiquisys M CUM 223 / 253

All connections to the panel-mountedinstrument CUM 223 are established viathe terminal strips on the rear.In the case of the field instrumentCUM 253, all wires (including the sensorcell cable) are connected to terminals ina separate wiring compartment.

All the wiring can remain in place if theinstrument needs repair because allrepairs are limited to assemblyreplacement. So, dismantling theinstrument and rewiring are no longernecessary.

Sensor CUS 31 / 41

Signal output 1:turbidity /suspendedsolids

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

Powersupply

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LIQUISYS

CAL REL

REL1

REL1

ALARM

REL2

REL2E

ENDRESS+HAUSERLIQUISYS

CAL REL

REL1

REL1

ALARMREL2

REL2E

Dimensions

3.54”(90)

5.47”(139)

0.24”(6)

3.78”(96)

Dimensions ofLiquisys M CUM 253

Dimensions ofLiquisys M CUM 223

6

9.72”(247)

Ø 0.24”(6)

4.53”(115)

6.18”(157)

0.43”(11)

2.75”(70)

2.75”(70)

6.06”(154)6.69”(170)

Mounting of

Liquisys M CUM 223The panel-mounted version is mountedusing the supplied tensioning screws.The required overall mounting depth isapproximately 6.5 in. (165 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

6.18”(157)

Ø 0.31”(8)

0.63”(16)

4.53”(115)

Mounting of

Liquisys M CUM 253

8

Wall mountingScrews: Ø 0.24” (6 mm)Anchors: Ø 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. Ø 2.36” (60 mm);see Accessories)

3.54”(90)

1.18”(30)

Ø 0.31”(8)

2.36”(60)

0.24”(M 6)

3.54”(90)

2.76”(70)

Ø 0.31”(8)

Ø 0.24”(6)2.76”

(70)3.54”(90)

2.76”(70)

Manufacturer Endress+Hauser

Product designation Liquisys M CUM 223Liquisys M CUM 253

Measuring principle A CUS 31 or CUS 41 sensor is connected to thedigital sensor interface on the Liquisys S CUM 223 /253. The sensors supply a standardized signal forturbidity and temperature.

Measured quantities turbidity, suspended solids, temperature

Turbidity measurement with CUS 31

Measuring range* 0.00 to 9999 FNU *, 0.00 to 3000 PPM0.00 to 3.0 g/l, 0.00 to 200 %

Turbidity offset range ± 99.99 FNU *, ± 99.99 ppm, ± 99.99 g/l, ± 99.99 %

* 1 FNU = 1 NTU

Suspended solids measurement with CUS 41

Measuring range* 0.00 to 9999 FNU *, 0.00 to 9999 ppm0.00 to 300.0 g/l, 0.00 to 200%

Suspended solids offset range ± 99.99 FNU *, ± 99.99 ppm, ± 99.9 g/l, ± 99.9 %

* 1 FNU = 1 NTU

Temperature measurement

Temperature sensor NTC, 30 kΩ at 77 °F (25 °C)

Measuring range 23 to 158 °F (-5 to +70 °C)

Temperature offset range ± 41 °F (± 5 °C)

Signal input for turbidity / suspended solids / temperature

Sensor interface digital

Max. length of cable to sensor 660 ft. (200 m)

Digital inputs 1 and 2

Voltage 10 to 50 VDC

Current consumption max. 10 mA

Signal output for turbidity / suspended solids

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

Load max. 500 Ω Max. resolution 700 digits/mA

Output range adjustable, min ∆ 0.1 FNU, ∆ 1 ppm, ∆ 1 g/l, ∆ 0.1%

Separation voltage max 350 Vrms

/ 500 V DC

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

Signal output for temperature (optional)

Current range 0 / 4 to 20 mA, galvanically separated

Load max. 500 Ω Max. resolution 700 digits/mA

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

Separation voltage max 350 Vrms

/ 500 V DC

Overvoltage (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 (potential-free changeover contacts)

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

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

Switching voltage max. 250 V AC, 30 V DC

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

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

9

Technical dataGeneral specifications

Input

Output

Operating mode and system design

Technical data

(continued)Output (continued)

Accuracy

Ambient conditions

Physical data / design

Power requirements

10

Limit contactor

Pickup / dropout delay 0 to 7200 sec.

Controller

Function (adjustable) pulse length / pulse frequency controller

Controller response P, PI, PD, PID

Control gain Kp 0.01 to 20.00

Integral action time Tn 0.00 to 999.9 min.

Derivative action time Tv

0.00 to 999.9 min.

Period for pulse length controller 0.5 to 999.9 seconds

Frequency for pulse frequency controller 60 to 180 min-1

Alarm

Function (switchable) steady / fleeting contact

Alarm threshold adjustment range turbidity / suspended solids / temperature:complete measuring range

Alarm delay 0 to 2000 s (min)

Turbidity measurement with CUS 31

Resolution 0.001 FNU *, 0.01 ppm, 0.1 g/l, 0.1%

Deviation of indication1 ±2% of meas. value (min. 0.02 FNU *)

Reproducibility1 ±1% of meas. value (min. 0.01 FNU *)

Measurement deviation1, turbidity signal output 1% of current output range (min. 0.02 FNU *)

* 1 FNU = 1 NTU

Suspended solids measurement with CUS 41

Resolution 0.01 FNU *, 0.01 ppm, 0.1 g/l, 0.1%

Deviation of indication1 ±2% of meas. value (min. 0.02 FNU *)

Reproducibility ±1% of meas. value (min. 0.01 FNU *)

Measurement deviation1, suspended solids 1% of current output range (min. 0.02 FNU *) signal output

* 1 FNU = 1 NTU

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 and interference immunityacc. to EN 61326-1: 1998

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. 6.5 in. (165 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 / 3.15 A

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

AccessoriesMounting accessories

Type Features Order number

Pendulum For pendulum suspension of holder, e.g. 50080196frame CYA 611

Material: stainless steel 304

Post Kit for mounting of field housing on horizontal or 50086842mounting kit vertical pipes (Ø max. 2.36 in. [60 mm])

Material: stainless steel 304

AssembliesType Features Applications

CYA 611 Immersion holder with G 1, G ¾, or NPT ¾” Basins andthread channels

CUA 250 Flow holder (pressure-resistant up to 90 psi / Pipelines68 °F [20 °C])

CUA 461 Retractable holder for sensor or installation Pipelinesand removal without process interruption (max.30 psi)

SensorsType Features Applications

CUS 31 Turbidity sensor for drinking water and service Drinking water, filterwater applications. monitoring, phase

separation, surface water

CUS 41 Sensor for measurement of suspended solids Sedimentation, sewagetreatment plants, industrialservice water, phaseseparation

Cable / junction boxType Features Order number

CYK 8 Data cable (unassembled) for extension of 50089633CUS 31 / CUS 41 sensor connection cables

VBM Junction box 50003987

11

Product structure

CUM 223 -

1 VersionTB Suspended solids, preconfigured for concrete residual wash waterTU Turbidity/suspended solids measurementTS Turbidity/suspended solids measurement with additional functions

2 Power Supply0 230 VAC1 115 VAC2 230 VAC, CSA general purpose3 115 VAC, CSA general purpose5 100 V C7 24 VAC / VDC, CSA general purpose8 24 VAC / VDC

3 Measurement output0 Turbidity / SS1 Turbidity / SS and temperature3 Profibus PA4 Profibus DP5 Turbidity / SS with HART6 Turbidity / SS with HART and temperature

4 Contacts05 No additional contacts10 2 contacts (limit / PID / timer)15 4 contacts (limit / PID / timer / Chemoclean)16 4 contacts (limit / PID / timer)

United States

Endress+Hauser, Inc.2350 Endress PlaceGreenwood, IN 46143Phone: (317) 535-7138888-ENDRESSFAX: (317) 535-8498

TI 200C/24/ae/05.02© 2002 Endress+Hauser, Inc.

Canada

Endress+HauserCanada Ltd.1440 Graham’s LaneUnit 1, BurlingtonON, L7S 1W3Phone: (905) 681-9292800-668-3199FAX: (905) 681-9444

Mexico

Endress+HauserPaseo del Pedregal No. 610Col. Jardines del Pedregal01900, Mexico D.F.MexicoPhone: (525) 568-2405FAX: (525) 568-7459

For application and selection assistance,in the U.S. call 888-ENDRESS

For total support of your installed base, 24 hoursa day, in the U.S. call 800-642-8737

Visit us on our web site, www.us.endress.com

Endress+HauserThe Power of Know How

Turbidity/suspended solids controller Liquisys M CUM 223 / CUM 253

1 2 3 4

CUM 253 -

1 VersionTB Suspended solids, preconfigured for concrete residual wash waterTY Turbidity / suspended solids measurement, customizedTU Turbidity/suspended solids measurementTS Turbidity/suspended solids measurement with additional functions

2 Power Supply0 230 VAC1 115 VAC2 230 VAC, CSA general purpose3 115 VAC, CSA general purpose5 100 V C7 24 VAC / VDC, CSA general purpose8 24 VAC / VDC

3 Measurement output0 Turbidity / SS1 Turbidity / SS and temperature3 Profibus PA4 Profibus DP5 Turbidity / SS with HART6 Turbidity / SS with HART and temperature

4 Contacts05 No additional contacts10 2 contacts (limit / PID / timer)15 4 contacts (limit / PID / timer / Chemoclean)16 4 contacts (limit / PID / timer)

1 2 3 4