Endress+Hauser CLD132 Specifications

Technical Information

Smartec S CLD132

Measuring system with inductive sensor for conductivity and concentration measurement in the food industry

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Application

• Product monitoring in breweries, dairies and the beverage industry

• CIP system control

• Phase separation of product/water and product/product mixtures in pipe systems

• Alkali and acid concentration control in remaking

• Monitoring and control of bottle cleaning systems

Your benefits

• Transmitter housing made of stainless steel

• Sensor made of highly resistant plastic (PEEK)

• Sterilisable sensor

• High measuring reliability due to extensive self-monitoring functions

• Insensitive to polarisation and soiling

• Versions with ultrafast temperature response (t available

• Sensor versions for all process connections used in hygienic applications

• Various operating possibilities: – Keys –HART –PROFIBUS PA/DP – PC with Commuwin II software

• Large two-line display allows simultaneous display of measured value and temperature

• Standard version extendable by function extension with remote parameter set switching (measuring range switching)

hand-held terminal

<5s)

TI207C/07/en/08.04 51501593

Function and system design

Measuring principle Inductive conductivity measurement

A generator (1) generates an alternating magnetic field in the primary coil (2) which induces a current in the medium (3). The strength of the induced current depends on the conductivity and thus the ion concentration of the medium. The current flow in the medium generates another magnetic field in the secondary coil (4). The resulting current induced in the coil is measured by the receiver (5) and processed to determine the conductivity.

Smartec S CLD132

Inductive conductivity measurement

Generator

Primary coil

Current flow in the medium

Secondary coil

Receiver

Benefits of inductive conductivity measurement

• No electrodes, therefore no polarisation

• Accurate measurement in media or solutions with a high soiling degree and a tendency to deposition

• Complete galvanic separation of measurement and medium

Important properties of Smartec S CLD132

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• Hygiene The sensor, injection-moulded from highly chemically, mechanically and thermally resistant PEEK (polyether ether keton), does not have joints or crevices and is therefore hygienically safe.

• Temperature measurement – For applications requiring quick temperature measurement (e.g. CIP return, phase separation at various

temperatures), the Pt 100 temperature sensor is installed in a stainless-steel thermal conductivity socket that is sealed by a Chemraz O-ring. This ensures extremely fast temperature response times (t

< 5 s).

– For high-load applications, particularly for alternating thermal load due to very frequent sterilisation cycles

or temperature shocks, the Pt 100 temperature sensor is embedded in the PEEK sensor body thus eliminating the need for a seal. This ensures a long service life. This sensor version can also be applied at underpressure.

• Temperature compensation Smartec S CLD132 offers the following types of temperature compensation: – Linear compensation with freely selectable temperature coefficient α – Compensation according to IEC 746-3 for NaCl – Compensation with freely programmable coefficient table with 10 elements maximum

• Process temperature The use of special components and materials makes the sensor suitable for continuous exposure to temperatures of +125 °C. Short-time (max. 30 min.), it will work at +140 °C for sterilisation.

• Concentration measurement The transmitter can be switched from conductivity operating mode to concentration operating mode. The concentration operating mode provides one freely programmable as well as various predefined concentration curves, especially for common CIP solutions. This enables a direct display of the concentration in %.

• Remote parameter set switching Smartec S CLD132 can be ordered with remote parameter set switching (measuring range switching, MRS) enabling you – to cover a wide measuring range – to adjust temperature compensation when changing the product – to switch between concentration curves.

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Smartec S CLD132

ENDRESS+HAUSER SMARTEC S

ALARM

Measuring system A complete measuring system comprises:

• the Smartec S CLD132 transmitter

• the CLS52 conductivity sensor with integrated temperature sensor and fixed cable or

• the CLD132 compact version with integrated CLS52 conductivity sensor

Optional for the separate version: CLK5 extension cable, VBM junction box, mounting kit for pipe mounting

ENDRESS+HAUSER SMARTEC S

ALARM

CAL

–

Complete measuring systems Smartec S CLD132 as separate transmitter and compact version

A CLS52 conductivity sensor B Smartec S CLD132 transmitter C Smartec S CLD132 compact version with integrated CLS52

Input

Measured variables Conductivity

Concentration Temperature

Measuring range

Sensor cable max. cable length 55 m / 180.46 ft with CLK5 cable (separate version)

Conductivity: recommended range: 100 µS/cm ... 2000 mS/cm (uncompensated) Concentration:

NaOH: 0 ... 15 %

: 0 ... 25 %

HNO

: 0 ... 30 %

2SO4

H3PO4: 0 ... 15 % User 1 (... 4): (4 tables available in versions with remote parameter set switching)

Temperature: –35 ... +250 °C / -31 ... +482 °F

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Binary inputs 1 and 2

Voltage: 10 ... 50 V DC Current consumption: max. 10 mA at 50 V

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Output

Smartec S CLD132

Output signal

Signal on alarm 2.4 mA or 22 mA error current

Load max. 500 Ω

Output range

Signal resolution max. 700 digits/mA

Separation voltage max. 350 V

Minimum distance of output signal

Conductivity: 0 / 4 ... 20 mA, galvanically isolated Temperature (optional second current output)

Conductivity: adjustable Temperature: adjustable

/ 500 V DC

RMS

Conductivity:

Measured value 0 ... 19.99 µS/cm: 2 µS/cm Measured value 20 ... 199.9 µS/cm: 20 µS/cm Measured value 200 ... 1999 µS/cm: 200 µS/cm Measured value 0 ... 19.99 mS/cm: 2 mS/cm Measured value 20 ... 200 mS/cm: 20 mS/cm

Measured value 200 ... 2000 mS/cm: 200 mS/cm Concentration: no minimum distance Temperature: 15 °C / 59 °F

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

Auxiliary voltage output

Contact outputs

Limit contactor

Alarm

Output voltage: 15 V ± 0.6 V Output current: max. 10 mA

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. 500 VA AC, 60 W DC Switching power with inductive load (cos ϕ = 0.4): max. 500 VA AC

Pickup / dropout delay: 0 ... 2000 s (versions with remote parameter set switching only)

Function (switchable): steady / fleeting contact Alarm delay: 0 ... 2000 s (min)

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Smartec S CLD132

Electrical connection

Power supply

10-50 V

optional

15 V

15 16 83

∼

–

∼

–

Sensor connection

Electrical connection of CLD132

Signal output 1 conductivity

Signal output 2 temperature

Auxiliary power output

Binary input 2 (MRS 1+2)

Binary input 1 (hold / MRS 3+4)

The conductivity sensor of the separate version is connected using the shielded multi-core fixed cable. Use the junction box VBM and the CLK5 extension cable (see Accessories) to extend the cable length.

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Conductivity sensor

Temperature sensor

Alarm (contact position: no current)

Power supply

Remote parameter set switching (measuring range

MRS:

switching)

Electrical connection of CLS52

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Supply voltage Depending on ordered version:

100 / 115 / 230 V AC +10 / -15 %, 48 ... 62 Hz 24 V AC/DC +20 / -15 %

Smartec S CLD132

Cable entries

Terminal assignments of cable glands on Smartec S CLD132 A Separate version B Compact version

Plug, analog output, binary input

Cable gland for alarm contact

Cable gland for power supply

Housing ground

Pressure comp. element PCE (Goretex

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Cable gland for sensor connection, Pg 9

Power consumption max. 7.5 VA

filter)

Plug, analog output, binary input

Cable gland for alarm contact

Cable gland for power supply

Housing ground

Pressure comp. element PCE (Goretex

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filter)

Mains fuse Fine-wire fuse, medium time lag, 250 V / 3.15 A

Performance characteristics

Measured value resolution

Temperature response time

Measured error of the sensor

Measured error of the transmitter

Temperature: 0.1 °C / 0.18 °F

< 5 s versions with stainless steel socket (CLD132-********1/2)

t90 < 3.5 min versions with encapsulated Pt 100 (CLD132-********6/7)

Conductivity: – -5 ... +100 °C / 23 ... 212 °F – > 100 °C / > 212 °F

± (10 µS/cm + 0.5 % of measured value) ± (30 µS/cm + 0.5 % of measured value)

Temperature: Pt 100 class A acc. to IEC 751

Conductivity: – Display: – Conductivity signal output:

max. 0.5 % of measured value ± 4 digits

max. 0.75 % of current output range Temperature – Display: – Temperature signal output:

max. 0.6 % of measuring range

max. 0.75 % of current output range

Repeatability

a) acc. to IEC 60746 part 1, at nominal operating conditions

Conductivity: max. 0.2% of measured value ± 2 digits

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