YOKOGAWA SC4A, SC41, SC42, SC49, SX42 Instruction Manual

Instruction

YOKOGAWA

Manual

Model SC4A, SC41 SC42,
SC49, SX42
Specific Conductivity
sensors

IM 12D07J01-10E-E

11th edition

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IM 12D07J01-10E-E

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IM 12D07J01-10E-E

CONTENTS

1. PREFACE 1

1.1 Introduction 1

1.2 Unpacking and Checking 1

1.3 Warranty and Service 1

1.4 Serial Number definition 2

2. MODEL SC4A 3

2.1. General Specifications 3

2.1.1. Measuring elements 3

2.1.2. Materials 3

2.1.3. Functional specifications (at 25°C) 4

2.1.4. Dynamic specifications 4

2.1.5. Operating range 4

2.1.6. Regulatory standards (only for SC4A with fixed cable) 5

2.1.7. Shipping details 7

2.1.8. Environmental conditions 7

2.1.9. Mechanical specifications 7

2.2. Installation of SC4A sensors 7

2.2.1. Typical installation SC4A-*-AD with standard options 7

2.2.2. Typical installation SC4A-E-SA (SB, SC) with standard options / spare parts 8

2.2.3. Typical installation SC4A-*-PR 9

2.3. Dimensions SC4A sensors 9

2.4. Wiring SC4A sensors 10

2.5. Modelcode SC4A sensors 11

2.6. Spare parts SC4A 12

3. MODEL SC41, SC42 AND SC49 13

3.1. General Specifications 13

3.1.1. Measuring elements 13

3.1.2. Materials 13

3.1.3. Functional specifications (at 25°C) 14

3.1.4. Dynamic specifications 14

3.1.5. Operating range 14

3.1.6. Regulatory standards (only for SC42 with Amphenol connector) 15

3.1.7. Shipping details 16

3.1.8. Environmental conditions 16

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3.2. Installation of SC41/SC42/SC49 sensors 17

3.2.1. Typical installation of SC41/SC42/SC49 sensor

in FF40 Flow fittings/ FS40 Flow fitting assemblies 17

3.2.2. Typical installation of SC41/SC42/SC49 sensor in FD40 Immersion fitting 22

3.3 Dimensions SC41/SC42/SC49 sensors. 23

3.4. Wiring SC41/SC42/SC49 sensors 25

3.5 Modelcode SC41/SC42/SC49 25

4. MODEL SX42 26

4.1. General Specifications 26

4.1.1. Measuring elements 26

4.1.2. Materials 26

4.1.3. Functional specifications (at 25°C) 26

4.1.4. Operating range 26

4.1.5. Regulatory standards (not applicable for sensors with suffix code -BV or -NV) 28

4.1.6. Shipping details 29

4.1.7. Environmental conditions 29

4.2. Installation of SX42 sensors 29

4.3. Dimensions SX42 sensors 29

4.4. Wiring SX42 sensors 29

5. GENERAL CALIBRATION AND MAINTENANCE PROCEDURE 31

5.1. Calibration of the sensor 31

5.2. Periodic maintenance of the sensor 31

6. PROTECTION OF ENVIRONMENT (USE IN CHINA) 32

7. CHEMICAL COMPATABILITY CHART 33

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1. PREFACE

1.1 Introduction

The sensor, model SC4A, SC41, SC42, SC49 and SX42, and associated fitting program is

designed to meet the most common installation requirements in terms of material compatibility,

process connections and flow dynamics. The various installation possibilities are described and

illustrated in this Instruction Manual.

Model SC4A sensors, available in a Stainless Steel or Titanium version with fixed cable or

Variopin connector, in combination with WU10/WE10-cable are intended for the low conductivity

applications. These sensors are designed in a convenient compact style, and can be inserted

directly in process pipework using available fittings or adapters.

Model SC41, SC42 and SC49 sensors, available in various materials such as Epoxy, Stainless

Steel, PTFE and PVDF, are intended to suit most process conditions. The sensors are provided

either with a Amphenol connector to fit the Yokogawa WU40 cable or Variopin connector to fit with

Yokogawa WU10/WE10-cable. A wide range of flow and immersion fittings makes it possible to

install the sensors in a permanent or semi-permanent location.

Model SX42 sensors have a Stainless Steel body and ceramic insulation, especially designed to

withstand high temperatures and high pressures. The flanged model has an integral connection box,

the threaded models are provided with a Amphenol connector to fit the Yokogawa WU40 cable or

Variopin connector to fit with Yokogawa WU10/WE10-cable.

1

All sensors have a pre-calibrated cell constant and a built-in temperature element for automatic

temperature compensation. Sensors with the Variopin connector are equipped with an ID-chip

in which callibration information is stored for easy setup when connected to a SENCOM Smart

Adapter model SA11-C1. For metal sensors a 3.1 material certificate is included. The sensors,

except those equipped with Variopin connector, are ATEX certified for installation in zone 0

environments when connected to a certified intrinsically safe Yokogawa analyser, model SC202S

or FLXA21 or a certified intrinsically safe circuit with defined output parameters (see General

Specifications of each sensor for details).

1.2 Unpacking and Checking

Upon delivery, unpack the sensor carefully and inspect it to ensure that it is not damaged during ship-

ment. If damage is found, retain the original packing material and immediately notify the carrier and the

relevant local Yokogawa Sales office. Make sure the Model Code and Serial Number on the sensor are

the same as on the packing list. Also check if option(s) that were ordered, are included and correct.

1.3 Warranty and Service

Yokogawa products are guaranteed free from defects in workmanship and materials under

normal use and service for a period of (typically) 12 months from the date of shipment from the

manufacturer. Individual Sales organizations can deviate from the typical warranty period, and the

IM 12D07J01-10E-E

2

conditions of sale relating to the original purchase order should be consulted. Damage caused

by wear and tear, inadequate maintenance, corrosion, or by the effects of chemical processes is

excluded from this warranty coverage. In the event of a warranty claim, the defective goods should

be sent (freight paid) to the Service Department of the relevant Yokogawa Sales office for repair or

replacement (at Yokogawa’s discretion).

The following information must be included in the letter accompanying the returned goods:

• Model Code and Serial Number.

• Original Purchase Order and Date.

• Length of time in service and description of the process.

• Description of the fault and circumstances of the failure.

• Process/environmental conditions that may be related to the failure of the sensor.

• Statement as to whether warranty or nonwarranty service is requested.

• Complete shipping and billing instructions for return of material, plus the name and phone number

of a contact person that can be reached for further information.

• Clean Statement Returned goods that have been in contact with process fluids must be

decontaminated and disinfected prior to shipment. Goods should carry a certificate to this effect,

for the health and safety of our employees. Material Safety Data sheets must be included for all

components of the process to which the sensor (options) have been exposed.

1.4 Serial Number definition

The serial number is defined by nine (9) alphanumeric characters:

X1X2 Production location, N3 for Yokogawa Process Analyzers Europe B.V.

X3X4 Year/Month code

X5X6X7X8X9 Tracking number

Example: N3P600028

Method used for year/month numbering

Table 1: Production Year code Table 2: Production Month code

Year Year code Year Year code Month Month code

2014 P 2026 3 January 1

2015 R 2027 4 February 2

2016 S 2028 5 March 3

2017 T 2029 6 April 4

2018 U 2030 7 May 5

2019 V 2031 8 June 6

2020 W 2032 9 July 7

2021 X 2033 A August 8

2022 Y 2034 B September 9

2023 Z 2035 C October A

2024 1 2036 D November B

2025 2 2037 E December C

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2. MODEL SC4A

2.1. General Specifications

2.1.1. Measuring elements

2-electrode measuring system

Pt1000 temperature sensor

2.1.2. Materials

Wetted parts sensor:

Body & electrodes SC4A-T-AD : Titanium grade 2 or 3

SC4A-S-AD : Stainless Steel AISI 316L

SC4A-E-SA (SB, SC) : Stainless Steel AISI 316L

SC4A-T-PR : Titanium grade 2 or 3

SC4A-S-PR : Stainless Steel AISI 316L

O-ring SC4A-*-AD : Viton

SC4A-E-SA (SB, SC) : EPDM FDA approved

SC4A-*-PR : Viton

Insulation : PEEK 450G, FDA migration tested

Wetted parts adapters/fitting:

/PS, /FF SC4A-*-AD : Stainless Steel AISI 316L

/PF SC4A-*-AD : PVDF

/SA1(2), /SB1(2), /SC1 SC4A-E-SA (SB, SC) : Stainless Steel AISI 316L

3

Cable:

Versions with integrated cable only:

Conductors : tinned copper 0.6 mm

2

Outside shield : braid, tinned copper, 85% coverage

Insulator : Polyester for conductors, for colors see

Section 2.4

TPE-O for outer jacket, color black

Variopin connector:

Contacts : Gold plated

Material : Nickel plated brass

Insulation : Peek, UL94-VO

IP class : IP67

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4

2.1.3. Functional specifications (at 25°C)

Temperature element : Pt1000 to IEC 751

Nominal Cell Constant (C.C.) : 0.02 cm-1 or 0.1 cm

-1

Note: The SC4A temperature sensor is designed for measurement compensation and for

indication. It is NOT designed for process temperature control.

2.1.4. Dynamic specifications

Response time temperature t90 : < 1 min.

2.1.5. Operating range

Conductivity at actual process temperature : 1 µS * C.C. – 50 mS * C.C.

100 000 000.00

10 000 000.00

1 000 000.00

100 000.00

10 000.00

1 000.00

100.00

10.00

µS/cm

1.00

0.10

0.01
SC42-SP34
SX42-SX34
(0.01/cm)

SC4A-002
(0.02/cm)

SC42-SP24
SX42-SX24
(0.1/cm)

SC450/SC202/FLXA21/ FLXA202
DC402

SC4A-010

SC42-EP14

(0.1/cm)

(1/cm)

SC42­EP15/EP16
(1/cm)

SC42-EP04
SC42-FP04
SC42-TP04
(10/cm)

SC450/FLXA21/
FLXA202

SC202

SC42-EP18

SC42-EP08
SC42-FP08

(1/cm)

SC42-TP04

(10/cm)

Fig. 1 Measuring range of conductivity sensors

Process temperature Stainless Steel : 0°C to 110°C (32°F to 230°F)

& Titanium type : 135°C (275°F) for a short period of time during

sterilization.

Process temperature in combination : 0°C to 80°C (32°F to 176°F)

with PVDF fitting

Process pressure Stainless Steel & Titanium type : 0 to 10 bar (0 to 142 PSIG)

Process Pressure in combination with PVDF fitting: See Fig. 2

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bar

12
10
8
6
4
2

0 10 20 30 40 50 60 70 80 100 120 140 160

SS / Ti

PVDF

Fig. 2 Pressure vs temperature

Cable length for

• SC4A with fixed cable or SC4A with Variopin

directly connected to Flexa analyzer : max. 60 meter with WU10/WE10

(possibly in combination with WF10 cable

and BA10 junction box}

• For suffix -VS combined with SA11 : 3 meter WE10 cable (as option) combined

with SA11 Smart Adapter

SA11 Smart Adapter : Directly connected to the analyzer using a

WU11 cable up to 100 meters

or

Connected to a BA11 connetion box

using WU11 cable upto 100 m. The BA11

connection box is connected to the analyzer

using a WU11 cable up to 100m.

5

2.1.6. Regulatory standards (only for SC4A with fixed cable)

- ATEX : Directive 2014/34/EU

by applying:

EN 60079-0

EN 60079-11

EN 60079-26

Certificate no. : DEKRA 14ATEX0074 X

II 1 G Ex ia IIC T4… T6 Ga

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6

- IECEx

Applying standards : IEC 60079-0

: IEC 60079-11

: IEC 60079-26

Certificate no. : IECEx DEK 14.0032X

Ex ia IIC T4…T6 Ga

Conformity : EAC (Eurasia)

TS (Taiwan)

- Electrical data for ATEX/IECEx : For sensor input circuit connected to

A certified intrinsically safe circuit with the following

maximum values:

Ui = 14.4 V; Ii = 116.5 mA; Pi = 0.342 W

or

Certified intrinsically safe Yokogawa Contact

Conductivity transmitter Model FLXA21 series or

Model SC202S series.

The effective internal capacitance Ci and the

effective internal inductance Li of the sensor depends only

upon the properties and length of the integral cable.

Special conditions (X) : T6 for Tamb. -30°C to 40°C

T5 for Tamb. -30°C to 95°C

T4 for Tamb. -30°C to 130°C

Impact on the product shall be avoided.

Electrostatic charges on the enclosure shall be avoided.

From the safety point of view the circuits shall be

assumed to be connected to earth.

Regulatory standards (all types)

CE : Decision 768/2008/EC

- Pressure : Directive 2014/68/EU

Applying article : 4.3 (Sound Engineering Practice)

- RoHS2 : Directive 2011/65/EU

Applying category : 9 (Industrial monitoring and control instruments)

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