YOKOGAWA SC4AJ Series User manual

User’s
Manual
Model SC4AJ
Conductivity Sensor
IM 12D08F03-02E
IM 12D08F03-02E
10th Edition

IM 12D08F03-02E
< Introduction > i
Introduction
Thank you for purchasing our inductive conductivity measurement system.
This manual describes the method of installing for the SC4AJ.
To ensure that this measurement system can be operated safely and also exhibit its full
performance, be sure to read this manual before use.
This manual does not describe the units in Table shown below which are the component units
of the conductivity measuring system. Each of these units comes with an instruction manual, so
read the applicable manuals for details of the units concerned.
Manual Name IM No.
FLXA202, FLXA21 2-Wire Analyzer IM 12A01A02-01E
FLXA402 4-Wire Converter IM 12A01F01-02EN
IM 12A01F03-01EN etc.
SC450G Conductivity Converter IM 12D08N05-01E
SA11 SA11 Smart Adapter IM 12A06S01-00EN-P
Upon delivery, unpack the instrument carefully and inspect it to ensure that it was not damaged
during shipment. If damage is found, retain the original packing materials (including the outer
box) and then immediately notify the carrier and the relevant YOKOGAWA sales o󰀩ce.
Make sure the model code on the label a󰀩xed to the cable agrees with your order. For the
meaning of the model code, refer to the Model and Su󰀩x code table (Section 2.2).
Media No. IM 12D08F03-02E 10th Edition : Sep. 2019 (YK)
All Rights Reserved Copyright © 2006, Yokogawa Electric Corporation
10th Edition: Sep. 30, 2019-00

IM 12D08F03-02E
< Introduction > ii
For the safe use of this equipment
n Safety,Protection,andModicationoftheProduct
• In order to protect the system controlled by the product and the product itself and ensure
safe operation, observe the safety precautions described in this user’s manual. We assume
no liability for safety if users fail to observe these instructions when operating the product.
• If this instrument is used in a manner not specied in this user’s manual, the protection
provided by this instrument may be impaired.
• Be sure to use the spare parts approved by Yokogawa Electric Corporation (hereafter
simply referred to as YOKOGAWA) when replacing parts or consumables.
• Modication of the product is strictly prohibited.
• The following symbols are used in the product and user’s manual to indicate that there are
precautions for safety:
nNotes on Handling User’s Manuals
• Please hand over the user’s manuals to your end users so that they can keep the user’s
manuals on hand for convenient reference.
• Please read the information thoroughly before using the product.
• The purpose of these user’s manuals is not to warrant that the product is well suited to any
particular purpose but rather to describe the functional details of the product.
• No part of the user’s manuals may be transferred or reproduced without prior written
consent from YOKOGAWA.
• YOKOGAWA reserves the right to make improvements in the user’s manuals and product at
any time, without notice or obligation.
• If you have any questions, or you nd mistakes or omissions in the user’s manuals, please
contact our sales representative or your local distributor.
nWarning and Disclaimer
The product is provided on an “as is” basis. YOKOGAWA shall have neither liability nor
responsibility to any person or entity with respect to any direct or indirect loss or damage arising
from using the product or any defect of the product that YOKOGAWA can not predict in advance.
nCompliance with the simple apparatus requirements
SC4AJ meet the simple apparatus requirements dened in the following standards.
Note: TIIS certied types cannot be connected.
Use the sensors under the conditions of use required by the standards.
Applicable standards:
ANSI/ISA-60079-11 (2014)
ANSI/ISA-60079-0 (2009)
CAN/CSA-C22.2 NO. 60079-11:14
CAN/CSA-C22.2 NO. 60079-0:11
방호장치 의무안전인증 고시
GB 3836.4-2010
10th Edition: Sep. 30, 2019-00

IM 12D08F03-02E
< Introduction > iii
Conditions of use:
(1) Use in combination with an internally isolated transmitter, or use with, a transmitter in
combination with isolated barrier.
The FLXA202/FLXA21 is internally isolated.
(2) Upper limit of the process temperature.
The upper limit of process temperature is indicated below when the sensor is used in
combination with a YOKOGAWA transmitter.
For FLXA202/FLXA21, model and su󰀩x code below is available.
FLXA21-D-□-D-◊-C1-○-A-N-LA-N-NN
□: can be any value.
◊: must be EA, CD, CH, or EG.
○: must be NN or C1.
Any option code is available.
FLXA202-D-□-D-◊-C1-○-A-N-LA-N-NN
□: can be any value.
◊: must be CD, CH, or CG.
○: must be NN or C1.
Any option code is available
Upper limit of process temperature on the SC4AJ
Transmitter used in combination FLXA21
Ambient temperature Ta
Temperature class
40°C 60°C
T6 49 49
T5 95 (*1) 64
T4 110 99
T3 110 110
T2 110 110
T1 110 110
*1: Care about upper limit 100°C of temperature class T5 should be taken.
Other warnings are provided in the following.
WARNING
Handling precautions:
(1) Potential electrostatic charging hazard Electrostatic charge may cause an explosion hazard.
Avoid any actions that cause the generation of electrostatic charge, e.g., rubbing with a dry
cloth.
(2) IEC60079-14 (Electrical installations in hazardous areas) requires a label indicating ‘simple
apparatus’, stick this label to this sensor if necessary.
10th Edition: Sep. 30, 2019-00

IM 12D08F03-02E
< Introduction > iv
nSymbol Marks
Throughout this user’s manual, you will nd several di󰀨erent types of symbols are used to identify
di󰀨erent sections of text. This section describes these icons.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious
injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
injury. It may also be used to alert against unsafe practices.
CAUTION
Indicates that operating the hardware or software in this manner may damage it or lead to system
failure.
NOTE
Draws attention to information essential for understanding the operation and features.
nTrademark policy
FLXA is a registered trademark of Yokogawa Electric Corporation.
All other company and product names mentioned in this user’s manual are trademarks or
registered trademarks of their respective companies.
We do not use TM or ® mark to indicate those trademarks or registered trademarks in this user’s
manual.
10th Edition: Sep. 30, 2019-00

IM 12D08F03-02E
< Introduction > v
After-sales Warranty
nDo not modify the product.
nDuring the warranty period, for repair under warranty consult the
localsalesrepresentativeorserviceo󰀩ce.Yokogawawillreplaceor
repair any damaged parts. Before consulting for repair under warranty,
provide us with the model name and serial number and a description
of the problem. Any diagrams or data explaining the problem would
also be appreciated.
lIf we replace the product with a new one, we won’t provide you with a repair report.
lYokogawa warrants the product for the period stated in the pre-purchase quotation
Yokogawa shall conduct dened warranty service based on its standard. When the
customer site is located outside of the service area, a fee for dispatching the maintenance
engineer will be charged to the customer.
nIn the following cases, customer will be charged repair fee regardless
of warranty period.
• Failure of components which are out of scope of warranty stated in instruction manual.
• Failure caused by usage of software, hardware or auxiliary equipment, which Yokogawa
Electric did not supply.
• Failure due to improper or insu󰀩cient maintenance by user.
• Failure due to modication, misuse or outside-of-specications operation which Yokogawa
does not authorize.
• Failure due to power supply (voltage, frequency) being outside specications or abnormal.
• Failure caused by any usage out of scope of recommended usage.
• Any damage from re, earthquake, storms and oods, lightning, disturbances, riots, warfare,
radiation and other natural changes.
n Yokogawadoesnotwarrantconformancewiththespecicapplication
attheusersite.Yokogawawillnotbeardirect/indirectresponsibility
fordamageduetoaspecicapplication.
n YokogawaElectricwillnotbearresponsibilitywhentheuser
congurestheproductintosystemsorresellstheproduct.
nMaintenance service and supplying repair parts will be covered for
veyearsaftertheproductionends.Forrepairforthisproduct,please
contactthenearestsaleso󰀩cedescribedinthisinstructionmanual.
10th Edition: Sep. 30, 2019-00

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IM 12D08F03-02E
< CONTENTS > vii
Model SC4AJ
Conductivity Sensor
CONTENTS
IM 12D08F03-02E 10th Edition
Introduction....................................................................................................i
For the safe use of this equipment.............................................................ii
After-sales Warranty ....................................................................................v
1. General ...................................................................................................... 1-1
2. Specications ........................................................................................... 2-1
2.1 StandardSpecications................................................................................... 2-1
2.2 ModelandSu󰀩xCodes ................................................................................... 2-3
2.3 Converter and analyzer suitable for SC4AJ................................................... 2-4
2.4 Spare parts ........................................................................................................ 2-4
2.5 Drawings and Dimensions............................................................................... 2-5
3. Mounting and Wiring................................................................................ 3-1
3.1 Mounting ............................................................................................................ 3-1
3.1.1 Adapter mounting type (-AD) ............................................................. 3-1
3.1.2 Welding socket type (-SA) ................................................................. 3-2
3.1.3 Welding clamp type (-SB, -SC).......................................................... 3-3
3.2 Wiring ................................................................................................................. 3-4
4. Operation................................................................................................... 4-1
4.1 Set of cell constant value................................................................................. 4-1
4.2 Calibration with a solution of known conductivity ....................................... 4-1
5. Maintenance.............................................................................................. 5-1
5.1 Cleaning of the cell ........................................................................................... 5-1
5.2 Conrmingsensorabnormality ...................................................................... 5-1
Customer Maintenance Parts List ......................................CMPL 12D08F03-02E
Revision Information ...............................................................................................i
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IM 12D08F03-02E
< 1. General > 1-1
1. General
The SC4AJ is developed with the intention for the low conductivity applications found in the
semiconductor, power, and pharmaceutical industries. The SC4AJ is in a convenient compact
style.
The cell has been made available with either a titanium or stainless steel electrode. The electrode
is the 2-electrode system with cell constants of 0.02 cm-1 or 0.10 cm-1, and with a xed cable 3
to 20 meters in length. In response to customer demands, a variety of ttings for SC4AJ are also
available.
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IM 12D08F03-02E
  <2.Specications> 2-1
2. Specications
2.1 StandardSpecications
Cable with pin terminals (applicable to FLXA202, FLXA21, FLXA402)
Cable with M3 ring terminals (applicable to FLXA402, SC450G)
Cable with M4 ring terminals (applicable to FLXA202, FLXA21)
Variopin connector (applicable to SA11)
Object of measurement: Conductivity of solutions
Measuring principle: Two-electrode system
Cell constant: 0.02 cm-1, 0.1 cm-1
Measuring range:
For a cell constant: 0.02 cm-1: 0-0.5 μS/cm to 0-200 μS/cm
For a cell constant: 0.1 cm-1: 0-5 μS/cm to 1 mS/cm
Temperature Range: For electrode, 0 to 110°C
For holder, see Figure 1
Sterilization for electrode: 135°C (275°F), within 30 minutes in Steam Sterilization
Pressure range : For electrode, 0 to 1 MPa
For holder, see Figure 1
0 10 20 30 40 50 60 70 80 100 120 140
0.2
0.4
0.6
0.8
1.0
1.2
MPa
SUS316L
PVDF
˚C
F03.ai
Figure2.1 Therangeoftoleranceofholders(option:/PS,/PF,/RS,/RF,/SA1,/SA2,/SB1,/SB2,
/SC1)fortemperatureandpressure
10th Edition: Sep. 30, 2019-00

IM 12D08F03-02E
  <2.Specications> 2-2
Sample solution condition:
Although ow rate is not limited in measurement, air bubbles should not be mixed in the
sample solutions to obtain correct measured values.
Temperature sensor: Pt1000
Materials
Body & Electrode: Stainless steel (316L SS) (for all Fitting-type) or Titanium (only for
adapter mounting type-AD), Fluoro rubber (FKM) O-ring, EPDM O-ring
(for -SA with Variopin)
Mounting adapter: Polyvinylidene diuoride (for /PF and /RF) or Stainless steel (316 SS),
Stainless steel (316L SS)
Weight:
Sensors:
Adapter mounting type (SC4AJ-S-AD-09-002-03): approx. 0.3 kg
Adapter mounting type (SC4AJ-S-AD-15-002-03): approx. 0.4 kg
Welding socket type (SC4AJ-S-SA-NN-002-03): approx. 0.5 kg
1 or 1.5 inch welding clamp type (SC4AJ-S-SB-NN-002-03): approx. 0.4 kg
2 inch welding clamp type (SC4AJ-S-SC-NN-002-03): approx. 0.5 kg
Note: There are weight di󰀨erences among SC4AJ sensors. In order to know the more accurate weight of each type of sensors, please
calculate it from following information. The cable weighs 0.07 kg/m. The SC4AJ with 0.02 cm-1 cell constant is 0.02 kg heavier
than the SC4AJ with 0.1 cm-1 cell constant. 314L SS electrode is 0.04 kg heavier than Titanium electrode.
Adapters:
3/4NPT stainless steel adapter (/PS): approx. 0.1 kg
R3/4 stainless steel adapter (/RS): approx. 0.1 kg
3/4NPT PVDF adapter (/PF): approx. 0.04 kg
R3/4 PVDF adapter (/RF): approx. 0.04 kg
Straight welding socket (/SA1): approx. 0.3 kg
Angle welding socket 15 (/SA2): approx. 0.3 kg
Welding clamp 1 inch (/SB1): approx. 0.3 kg
Welding clamp 1.5 inch (/SB2): approx. 0.3 kg
Welding clamp 2 inch (/SC1): approx. 0.4 kgNOTE
Do not submerge the sensor itself in process water, as the seams between the mold and the
metal of the sensor are not waterproof.
10th Edition: Sep. 30, 2019-00

IM 12D08F03-02E
  <2.Specications> 2-3
2.2 ModelandSu󰀩xCodes
Model Su󰀩xCode Option Code Description
SC4AJ ........................................................... ........................ Conductivity sensor
Material -T
-S
.......................
....................... Titanium (Only for -AD)
316L SS
Fitting type -AD
-SA
-SB
-SC
.......................
.......................
.......................
.......................
Adapter mounting type
Welding socket type (*1)
1 or 1.5 inch welding clamp type (*2)
2 inch welding clamp type (*2)
Sensor length -09
-15
-NN
.......................
.......................
.......................
9 cm (Code for -AD)
15 cm (Code for -AD)
xed length (Code for -SA, -SB, -SC)
Cell constant -002
-010
.......................
....................... 0.02 cm-1
0.1 cm-1
Cable length -03
-05
-10
-15
-20
-X1
-X2
-X3
-X4
-X5
-Y1
-Y2
-Y3
-Y4
-Y5
-VS
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
3 m (pin terminals)
5 m (pin terminals)
10 m (pin terminals)
15 m (pin terminals)
20 m (pin terminals)
3 m (M4 ring terminals) (*4)
5 m (M4 ring terminals) (*4)
10 m (M4 ring terminals) (*4)
15 m (M4 ring terminals) (*4)
20 m (M4 ring terminals) (*4)
3 m (M3 ring terminals) (*5)
5 m (M3 ring terminals) (*5)
10 m (M3 ring terminals) (*5)
15 m (M3 ring terminals) (*5)
20 m (M3 ring terminals) (*5)
Variopin connector (*6)
Temperature sensor -T1 ....................... Pt1000
Option For AD only /PS
/PF
/RS
/RF
3/4NPT adapter 316 SS
3/4NPT adapter PVDF
R3/4 adapter 316 SS
R3/4 adapter PVDF
For SA only /SA1
/SA2
Straight welding socket 316L SS
Angled welding socket 15° 316L SS
For SB only /SB1
/SB2
Welding clamp 1 inch 316L SS
Welding clamp 1.5 inch 316L SS
For SC only /SC1 Welding clamp 2 inch 316L SS
Oil prohibit /DG1 Oil-prohibited use (*3)
*1: When you select Fitting type -SA, place an order on the SC4AJ with Option code /SA1 or /SA2.
*2: When you select Fitting type -SB, place an order on the SC4AJ with Option code /SB1 or /SB2 (including seal ring),
When you select Fitting type -SC, place an order on the SC4AJ with Option code /SC1 (including seal ring).
*3: Washing treatment of wet part with alcohol.
*4: Used for connection to FLXA202, FLXA21.
*5: Used for connection to FLXA402, SC450G.
*6: Used for connection with SA11. Sensor length -09 is not selectable.
10th Edition: Sep. 30, 2019-00

IM 12D08F03-02E
  <2.Specications> 2-4
2.3 Converter and analyzer suitable for SC4AJ
FLXA202/FLXA21: 2-Wire Analyzer
FLXA402: 4-Wire Converter
SC450G: conductivity converter
Type of
terminals
Converter
Pin Ring
M4
Ring
M3
SC450G (*1) N.A. Yes
FLXA402 (:2) Yes N.A Yes
FLXA202/FLXA21 Yes Yes N.A.
*1: Both pin and M3 ring can be used, but M3 ring are recommended.
*2: FLXA402 when connected to a SA11 can be connected with sensors equipped with Variopin connector. (SC4A..-VS, SC42-�V,
SX42..�V, SC4AJ..-VS, SC8SG..-VS)
SA11 Smart Adapter can connect to Variopin connecter.
2.4 Spare parts
The following spare parts are necessary in maintaining SC4AJ or changing the installed place.
Previously procure the parts related to each conductivity sensor type.
Parts No. Description
K9670MA
K9675VY
K9670MK
K9670MP
K9670MT
K9670MU
K9670MV
K9670MW
K9670MD
K9670ME
K9670MB
K9670MC
K9670ML
K9670MQ
O-ring for -SA (excluding -VS)
O-ring set for -SA (for -VS)
Seal rings for /SB1 or /SB2
Seal rings for /SC1
3/4 NPT Stainless steel adapter for -AD
3/4 NPT PVDF Adapter for -AD
R3/4 Stainless steel adapter for -AD
R3/4 PVDF Adapter for -AD
Angled welding socket and mounting nut for -SA
Staight welding socket for -SA
Angled welding socket for -SA
Straight welding socket for -SA
Welding clamp 1 or 1.5 inch for -SB
Welding clamp 2 inch for -SC
10th Edition: Sep. 30, 2019-00

IM 12D08F03-02E
  <2.Specications> 2-5
2.5 Drawings and Dimensions
˂Adapter mounting type˃
SC4AJ-p-AD-09
Sensor length:09(9cm)
90
ø19.1
Pin-type Ring-type
Cable length (3m, 5m, 10m, 15m, 20m)
Approx. 350
Unit: mm
SC4AJ-p-AD-15
Sensor length:15(15cm)
ø19.1
152
Pin-type Ring-type
Cable length (3m, 5m, 10m, 15m, 20m)
Approx. 350
Variopin connector
Unit: mm
57.6
 ●Option: Adaptermountingtype(-AD) /PS(StainlessSteel) /PF(PVDF)
/RS(StainlessSteel)/RF(PVDF)
3/4NPT or R3/4
Approx. 49
Unit: mm
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IM 12D08F03-02E
  <2.Specications> 2-6
˂Welding socket type˃
SC4AJ-p-SA-NN
ø38
ø33.8
ø19.1
ø24.9
95
ø38
ø33.8
ø19.1
ø24.9
95 189
Pin-type Ring-type
Cable length (3m, 5m, 10m, 15m, 20m)
Approx. 350
Approx. 185
O-ring
Unit: mm
Variopin connector
 ●Option: Weldingsockettype(-SA)
ø42
(56.3)
ø42
(43.5)
8.5
55
51
8.5
15°
Socket
thickness
Socket
thickness
Straight welding socket: /SA1 Angled welding socket: /SA2 Unit: mm
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IM 12D08F03-02E
  <2.Specications> 2-7
˂Weldingclamptype˃
SC4AJ-p-SB-NN
ø50.5 ø19.1
70 158
ø50.5 ø19.1
70
Pin type Ring type
Cable length (3m, 5m, 10m, 15m, 20m)
Approx. 350
Approx. 150
Unit: mm
Variopin connector
 ●Option: Weldingclamptype(-SB)
12.7
ø38.1
ø25.4
12.7
Welding clamp 1 inch: /SB1 Welding clamp 1.5 inch: /SB2 Unit: mm
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IM 12D08F03-02E
  <2.Specications> 2-8
Sensor SC4AJ-p-SC-NN
167.3
ø25 ø19.1
ø64
80
ø64 ø19.1
80
Approx. 170
Pin type Ring type
Cable length (3m, 5m, 10m, 15m, 20m)
Approx. 350
Variopin connector
Unit: mm
 ●Option: Weldingclamptype(-SC)
ø50.8
12.7
Unit: mm
Welding clamp 2 inch: /SC1

IM 12D08F03-02E
< 3. Mounting and Wiring > 3-1
3. Mounting and Wiring
3.1 Mounting
Before mounting an electrode in a process plant environment, the following points should be
considered.
• The electrode must be mounted in the process in such a way that the ow through
it represents the true composition of the liquid. The ow through the cell should be
uninterrupted and the cell should not be mounted at a dead angle.
• A cell must be immersed in the process liquid to a level above the outlet to ensure an
uninterrupted liquid path between the electrodes.
• The sensor should be mounted in such a way to allow safe and easy removal for
maintenance, and to release the process liquid pressure for the removal.
• Check the process pressure for mounting place is below the pressure range of the SC4AJ
and its adapter.
• Do not submerge the sensor itself in process water, as the seams between the mold and the
metal of the sensor are not waterproof.
CAUTION
When ultra-pure water ows through plastic pipe, electrostatic charge may be produced.
When the sensor is installed on this plastic pipe, the electrostatic charge goes through the
sensor, and into a converter circuit through terminals on the converter which is connected to the
sensor. This electrostatic charge will discharge and damage electronic parts on the converter
circuit.
3.1.1 Adaptermountingtype(-AD)
Option code /PS, /RS (material: stainless steel) and /PF, /RF (material: PVDF) are for the
adapters special for the Adapter Mounting Type of the SC4AJ. As for their dimensions, refer
to section 2.5. Mounting is done by the combination of the sensor with the adapter. Mount the
sensor by the correct insertion order of adapter parts according to Figure 3.1.
Note: Screwing the nut by the incorrect order of the parts can cause trouble of the mounting system and sealing defective.
Tighten the nut with a torque of approx. 190 N•m. This corresponds approximately to rst tightening
with the ngers, then using a spanner or the like to tighten by one and a quarter turns.
Nut
Adapter
(/PS, /PF
/RS, /RF)
F3-1.ai
Figure3.1 Mountedsensor(SC4AJ-AD)
10th Edition: Sep. 30, 2019-00