YOKOGAWA FLXA202 2-Wire Analyzer User Manual

YOKOGAWA FLXA202 2-Wire Analyzer User Manual

Introduction

Thank you for purchasing the FLXATM202/FLXATM21 2-Wire Analyzer.
Please read the following respective documents before installing and using the FLXA202/FLXA21. When the FLXA21 with the output of FOUNDATION Fieldbus or PROFIBUS PA Communication is used, please refer to the User’s Manual, IM 12A01A02-71E or IM 12A01A02-72E, too. The related documents are as follows.

General Specifications

FLXA21 2-wire Analyzer

FOUNDATION Fieldbus Communication

| GS 12A01A02-71E| For FLXA21. Online manual
FLXA21 2-wire Analyzer

PROFIBUS PA Communication

| GS 12A01A02-72E| For FLXA21. Online manual

• the “E” or “EN” in the document number is the language code.

User’s Manual

FLXA202/FLXA21 2-wire Analyzer

Start-up Manual

| IM 12A01A02-12E| Attached to the product (This manual)
Safety Instruction Manual| IM 00C01C01-01Z1| For type “-AB”, “-CB”, or “-DB” Attached to the product
FLXA202/FLXA21 2-wire Analyzer

Safety Precautions

| IM 12A01A02-20E| For intrinsic safety, nonincendive and Type n.

Attached to the product

FLXA202/FLXA21 2-wire Analyzer

Installation and Wiring

| IM 12A01A03-01EN| Online manual
FLXA202/FLXA21 2-wire Analyzer

Operation of pH/ORP

| IM 12A01A03-31EN| For pH/ORP (-P1) selection

Online manual

FLXA202/FLXA21 2-wire Analyzer

Operation of SC

| IM 12A01A03-32EN| For Conductivity (SC) (-C1) selection

Online manual

FLXA202/FLXA21 2-wire Analyzer

Operation of ISC

| IM 12A01A03-33EN| For Inductive conductivity (ISC) (-C5) selection

Online manual

FLXA202/FLXA21 2-wire Analyzer

Operation of DO

| IM 12A01A03-34EN| For Dissolved oxygen (DO) (-D1) selection

Online manual

FLXA202 2-wire Analyzer Operation of

SENCOM SA-pH/ORP

| IM 12A01A03-36EN| For pH/ORP of SENCOM SA (-S5) selection

Online manual

FLXA202 2-wire Analyzer Operation of SENCOM SA-SC| ****

IM 12A01A03-37EN

| For Conductivity (SC) of SENCOM SA (-S5) selection

Online manual

FLXA21 2-wire Analyzer

FOUNDATION Fieldbus Communication

| IM 12A01A02-71E| For FLXA21, output “-F”

Online manual

FLXA21 2-wire Analyzer

PROFIBUS PA Communication

| IM 12A01A02-72E| For FLXA21, output “-P”

Online manual

• The “E” or “EN” in the document number is the language code.

Note: Please read the Safety Precautions (IM 12A01A02-20E) before using the product. The Safety Precautions includes Control Drawings of intrinsic safety, nonincendive and Type n that describes specific condition for using FLXA202/FLXA21 in hazardous/classified location.

An exclusive User’s Manual might be attached to the products whose suffix codes or option codes contain the code “Z” (made to customers’ specifications). Please read it along with this manual.

Technical Information

FLXA202 2-wire Analyzer

Selection Guide for Intrinsic Safety type Associated Apparatus

| TI 12A01A02-42EN| Online manual
FLXA202/FLXA21 2-Wire Analyzer

HART Communication

| TI 12A01A02-60E| Online manual

• The “E” or “EN” in the document number is the language code.

You can download the latest documents from our website. Scan QR code.
http://www.yokogawa.com/an/flxa202/download/

Read corresponding user’s manual for details about sensors or other related products.

Note 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 find mistakes or omissions in the user’s manuals, please contact our sales representative or your local distributor.

Drawing Conventions

Some drawings may be partially emphasized, simplified, or omitted, for the convenience of description. Some screen images depicted in the user’s manual may have different display positions or character types (e.g., the upper / lower case). Also note that some of the images contained in this user’s manual are display examples.

Copyright and Trademark Notices

FLEXA, FLXA and SENCOM are trademarks or registered trademarks 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.

Product Disposal

The instrument should be disposed of in accordance with local and national legislation/regulations.

Warranty and service

Yokogawa products and parts are guaranteed free from defects in workmanship and material under normal use and service for a period of (typically) 12 months from the date of shipment from the manufacturer.

Individual sales organisations can deviate from the typical warranty period, and the 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 are excluded from this warranty coverage.

In the event of warranty claim, the defective goods should be sent (freight paid) to the service department of the relevant sales organisation for repair or replacement (at Yokogawa discretion). The following information must be included in the letter accompanying the returned goods:

• Part number, model code and serial number
• Original purchase order and date
• Length of time in service and a description of the process
• Description of the fault, and the circumstances of failure
• Process/environmental conditions that may be related to the failure of the device.
• A statement whether warranty or non warranty service is requested
• Complete shipping and billing instructions for return of material, plus the name and phone number of a contact person who can be reached for further information.

Returned goods that have been in contact with process fluids must be decontaminated/ disinfected before shipment. Goods should carry a certificate to this effect, for the health and safety of our employees. Material safety data sheets should also be included for all components of the processes to which the equipment has been exposed.

Safety Precautions

Safety, Protection, and Modification 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 specified in this user’s manual, the protection provided by this instrument may be impaired.
• If any protection or safety circuit is required for the system controlled by the product or for the product itself, prepare it separately.
• Be sure to use the spare parts approved by Yokogawa Electric Corporation (hereafter simply referred to as YOKOGAWA) when replacing parts or consumables.
• Modification of the product is strictly prohibited.
• The following safety symbols are used on the product as well as in this manual.

WARNING
This symbol indicates that an operator must follow the instructions laid out in this manual in order to avoid the risks, for the human body, of injury, electric shock, or fatalities. The manual describes what special care the operator must take to avoid such risks.

CAUTION
This symbol indicates that the operator must refer to the instructions in this manual in order to prevent the instrument (hardware) or software from being damaged, or a system failure from occurring.

CAUTION
This symbol gives information essential for understanding the operations and functions.

NOTE
This symbol indicates information that complements the present topic.

This symbol indicates Function Ground Terminal. Do not use this terminal as the protective ground terminal.

Warning 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.

FLXA202/FLXA21

• The FLXA202/FLXA21 should only be used with equipment that meets the relevant IEC, American, Canadian, and Japanese standards. Yokogawa accepts no responsibility for the misuse of this unit.
• Don’t install “general purpose type” instruments in the hazardous area.
• The Instrument is packed carefully with shock absorbing materials, nevertheless, the instrument may be damaged or broken if subjected to strong shock, such as if the instrument is dropped. Handle with care.

CAUTION

Electrostatic discharge

The FLXA202/FLXA21 contains devices that can be damaged by electrostatic discharge. When servicing this equipment, please observe proper procedures to prevent such damage. Replacement components should be shipped in conductive packaging. Repair work should be done at grounded workstations using grounded soldering irons and wrist straps to avoid electrostatic discharge.

CAUTION

• Do not use an abrasive or organic solvent in cleaning the instrument.
• Substitution of components may impair suitability for Division 2. Do not remove or replace while circuit is live unless area is known to be non hazardous. Explosion Hazard – Do not disconnect equipment unless area is known to be non hazardous. Do not reset circuit breaker unless power has been removed from the equipment or the area is known to be non hazardous.
• This instrument is a EN61326-1 Class A product, and it is designed for use in the industrial environment. Please use this instrument in the industrial environment only.
• The HART communication may be influenced by strong electromagnetic field. In this case another trial of the HART communication and/or operation with FLXA202/ FLXA21 touch screen can be carried out.
• When you open the front panel, make sure the screws are completely out of the screw holes, and then open the front panel slowly in order not to damage the threaded parts on the housing. If the threaded parts are damaged and the screws cannot be tightened, the waterproof performance will deteriorate.
• When checking whether ORP meter is functioning properly by using the concentrated sulfuric acid, handle it with care.

Safety, EMC and RoHS Compliance (FLXA202/FLXA21)

Safety

UL 61010-1
UL 61010-2-030
CAN/CSA-C22.2 No.61010-1
CAN/CSA-C22.2 No.61010-2-030
EN61010-1
EN61010-2-030

EMC: EN61326-1 Class A, Table 2 (For use in industrial locations) Influence of immunity environment (Criteria A): Output shift is specified within ± 25% of F.S.

EN61326-2-3
EN61326-2-5 (suffix code Output: -F, -P)
RCM: EN61326-1 Class A, Table 2
Korea Electromagnetic Conformity Standard Class A

Russian: TR CU 020/2011 (suffix code Output: -A)
RoHS: EN IEC 63000 FLXA202; 1.06 and later, FLXA21; 3.06 and later

Installation altitude: 2000 m or less
Category based on IEC 61010: I (Note 1)
Pollution degree based on IEC 61010: 2 (Note 2)

Note 1 : Installation category, called over-voltage category, specifies impulse withstand voltage.

Equipment with “Category I” (ex. two-wire transmitter) is used for connection to circuits in which measures are taken to limit transient over-voltages to an appropriately low level.

Note 2 : Pollution degree indicates the degree of existence of solid, liquid, gas or other inclusions which may reduce dielectric strength. Degree 2 is the normal indoor environment.

CE marking products

• Authorized Representative in EEA
  The Authorized Representative for this product in EEA is Yokogawa Europe B.V. (Euroweg 2, 3825 HD Amersfoort, The Netherlands).

• Identification Tag
  This manual and the identification tag attached on packing box are essential parts of the product.
  Keep them together in a safe place for future reference.

• Users
  This product is designed to be used by a person with specialized knowledge.

• How to dispose the batteries:
  This is an explanation about the EU Battery Directive. This directive is only valid in the EU. Batteries are included in this product. Batteries incorporated into this product cannot be removed by yourself. Dispose them together with this product.
  When you dispose this product in the EU, contact your local Yokogawa Europe B.V.office.
  Do not dispose them as domestic household waste. Battery type: Manganese dioxide lithium battery

Notice: The symbol (see above) means they shall be sorted out and collected as ordained in the EU Battery Directive.

Information of the WEEE Directive
This product is purposely designed to be used in a large scale fixed installations only and, therefore, is out of scope of the WEEE Directive. The WEEE Directive does not apply. This product should be disposed in accordance with local and national legislation/regulations. The WEEE Directive is only valid in the EU.

Control of Pollution Caused by the Product

This is an explanation for the product based on “Control of Pollution caused by Electronic Information Products” in the People’s Republic of China.

Explosion Protected Type Compliance

FLXA202, FLXA21 (Output: -A)

Item| Description| ‘Type’ in

MS code

---|---|---
Europe

(ATEX)

| FLXA202 and FLXA21: [Intrinsic safety “ia”]

Applicable Standard:    EN IEC 60079-0, EN 60079-11

| ****

-CB

International

(IECEx)

| FLXA202 and FLXA21: [Intrinsic safety “ia”]

Applicable Standard:    IEC 60079-0, IEC 60079-11

United States (FM)| FLXA202 and FLXA21: [Intrinsically safe / Nonincendive]

Applicable Standard:    FM 3600, FM3610, FM3611, FM3810, NEMA 250,

ANSI/ISA 60079-0, ANSI/ISA 60079-11, ANSI/UL 121201,

ANSI/ISA 61010-1

| ****

-CD

Canada (CSA)| FLXA202 and FLXA21: [Intrinsically safe / Nonincendive]

Applicable Standard:    C22.2 No.0, CAN/CSA-C22.2 No.94, C22.2 No.213,

CAN/CSA-C22.2 No.60079-0, CAN/CSA-C22.2 No.60079-11, CAN/CSA-C22.2 No.61010-1, CAN/CSA-C22.2 No.61010-2-030

United

States (FM)

| FLXA202 and FLXA21: [Nonincendive]

Applicable Standard:    FM 3600, FM3611, FM3810, NEMA 250,

ANSI/UL 121201, ANSI/ISA 61010-1

| ****

-DD

Canada (CSA)| FLXA202 and FLXA21: [Nonincendive]

Applicable Standard:    C22.2 No.0, CAN/CSA-C22.2 No.94, C22.2 No.213,

CAN/CSA-C22.2 No.61010-1, CAN/CSA-C22.2 No.61010-2-030

Canada (CSA)| FLXA202:                        [Type of protection ‘n’ / Nonincendive]

Applicable Standard:    C22.2 No.0, CAN/CSA-C22.2 No.94, C22.2 No.213,

CAN/CSA-C22.2 No.60079-0, CAN/CSA-C22.2 No.60079-11, CAN/CSA-22.2 No.60079-15, CAN/CSA-C22.2 No.61010-1, CAN/CSA-C22.2 No.61010-2-030

| ****

-DE

Europe

(ATEX)

| FLXA202:                        [Type of protection ‘n’]

Certificate:                      Not Applicable as per Annex VIII to ATEX 2014/34/EU Applicable Standard:    EN IEC 60079-0, EN 60079-11, EN60079-15, EN60529

| ****

-DB

International

(IECEx)

| FLXA202:                        [Type of protection ‘n’]

Applicable Standard:    IEC 60079-0, IEC 60079-11, IEC 60079-15

China

(NEPSI)

| FLXA202 and FLXA21: [Intrinsic safety “ia”]

Applicable Standard:    GB3836.1-2010, GB3836.4-2010, GB 3836.20-2010

| -CH
Korea (KOSHA)| FLXA202:                        [Intrinsic safety “ia” ]

Applicable Standard:    Notice of Ministry of Labor No. 2016-54

| -CG
FLXA21:                          [Intrinsic safety “ia”]

Applicable Standard:    Notice of Ministry of Labor No. 2016-54

| -EG

FLXA21 (Output: -F, -P)

Europe

(ATEX)

| Applicable Standard:| [Intrinsic safety “ia”]

EN IEC 60079-0, EN 60079-11

| -CB
International

(IECEx)

| Applicable Standard:| [Intrinsic safety “ia”]

IEC 60079-0, IEC 60079-11

United States (FM)| Applicable Standard:| [Intrinsically safe / Nonincendive]

FM 3600, FM3610, FM3611, FM3810, NEMA 250, ANSI/ISA 60079-0, ANSI/ISA 60079-11, ANSI/UL 121201,

ANSI/ISA 61010-1

| -CD
Canada (CSA)| Applicable Standard:| [Intrinsically safe / Nonincendive]

C22.2 No.0, CAN/CSA-C22.2 No.94, C22.2 No.213, CAN/CSA-C22.2 No.60079-0, CAN/CSA-C22.2 No.60079-11,

CAN/CSA-C22.2 No.61010-1, CAN/CSA-C22.2 No.61010-2-030

United States (FM)| Applicable Standard:| [Nonincendive]

FM 3600, FM3611, FM3810, NEMA 250, ANSI/UL 121201,

ANSI/ISA 61010-1

| -DD
Canada (CSA)| Applicable Standard:| [Nonincendive]

C22.2 No.0, CAN/CSA-C22.2 No.94, C22.2 No.213,

CAN/CSA-C22.2 No.61010-1, CAN/CSA-C22.2 No.61010-2-030

China (NEPSI)| Applicable Standard:| [Intrinsic safety “ia”]

GB3836.1-2010, GB3836.4-2010, GB 3836.20-2010

| -CH
Korea

(KOSHA)

| [Intrinsic safety “ia”] Applicable Standard:    Notice of Ministry of Labor No. 2016-54| -EG

Instrument Check

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 office.

Checking the model and suffix code

FLXA202
Make sure the model and suffix code on the nameplate affixed to the left side of the housing.
Make sure they match the information in your order. Be sure to apply correct power to the unit as detailed on the nameplate. Refer to table 2.

NOTE

Be sure to apply correct power to the unit , as detailed on the nameplate.

Figure 1.1 Example of nameplate (FLXA202)

FLXA21

Make sure the model and suffix code on the nameplate affixed to the left side or inside of the housing. Refer to table 3.

Figure 1.2 Example of nameplate (FLXA21)

Checking the accessories

Make sure the accessories in Table 1 are included.

Table 1 Accessories

One grommet for grounding attachment.

pH analyzer

(-P1)

| Jumper| 2 pcs/module|
Grommet set| 1 set/module|
SENCOM

SA (-S5)

| Grommet| 1|
Accessory| 1| 1 shield bracket, 2 screws, 2 ferrite cores, 2 wiring bands
Option| Bracket| 1 set| Option code /UM*, /U, /PM
Sun shade hood| 1 set| Option code /H6, /H7, /H8
Tag plate| 1| Option code /SCT
Adapter for conduit work| 3 or 4 sets| Option code /CB4, /CD4, /CF4

4sets when FLXA21 are used.

Startup Manual| 1 copy| This manual
Safety Precautions| 1 copy|

The universal mounting kit (/UM) contains the brackets for both /U and /PM options.

Table 2 Model and suffix code (FLXA202)

Table 3 Model and suffix code (FLXA21)

Wiring and Installation

Open the front panel and remove the plastic wiring covers, and then install the cable glands (refer to the Appendix A1).Re-install the wiring cover after the wiring is completed. Refer to the user’s manual IM 12A01A03-01EN for details.

Installation site

The FLXA202/FLXA21 is weatherproof and can be installed both inside and outside. It should, however, be installed as close as possible to the sensor to avoid long cable runs between the instrument and sensor. When a pH sensor is used, the cable length including the sensor cable should not exceed 20 meters (65.6 feet); 60 meters (197 feet) when using BA10 extension box and WF10 cable. For a conductivity sensor the cable run should not exceed 60 meters (197 feet). For dissolved oxygen the sensor cable run should not exceed 30 meters (100 feet). Select an installation site that meets the following conditions.

• Mechanical vibrations and shocks are negligible
• No relay switch and power switch are installed close to the converter
• There is space for cable connection beneath the cable glands
• Not exposed to direct sunlight or severe weather conditions
• Maintenance is possible
• No corrosive atmosphere
• Ambient Operating Temperature: -20 to +55 °C
• Humidity: 10 to 90% RH at 40 °C (Non-condensing)
• Water Protection: IP66 (except Canada), NEMA 4X (except Canada), Type 3S/4X (Canada)

If the instrument is installed outside and exposed to direct sunlight, a sun shade hood should be used.

The FLXA202/FLXA21 can be mounted on a wall, pipe or panel when the mounting kit is ordered. For dimensional information please refer to the Appendix, Mounting methods.

CAUTION

• Make sure the power supply is switched off before starting the installation.
• Power rating must comply with FLXA202/FLXA21 specification. Power voltage must match with the one indicated on the name plate.
• When you open the front panel, make sure the screws are completely out of the screw holes. Then open the front panel slowly in order not to damage the threaded parts on the housing. If the threaded parts are damaged and the screws cannot be tightened, the waterproof performance will deteriorate.
• Be careful not to lose the four front panel screws.

Wiring

Cables, Terminals, glands and conduit adapter

The supplied cable glands are for cables with an outside diameter of 6 to 12 mm (0.24 to 0.47 inches). Unused cable entry holes must be sealed with cable glands including the supplied close up plugs. When you protect cables with conduit, select conduit adapters with an option code / CB4, /CD4 or /CF4. For details refer to the User’s Manual IM 12A01A03 01EN.

CAUTION

• Be careful not to be injured by the sharp hole edges on the housing.
• When installing cable glands, hold cable glands and tighten cable gland nuts to a torque of 6 N•m. If cable glands, not gland nuts, are tightened, O-rings may be come out from the proper positions.
• When using a cable conduit, use a flexible conduit to avoid stress on the conduit adapter. The stress on the conduit adapter may damage the housing .

Wiring the power supply

Power rating must comply with FLXA202 specification.
FLXA202/FLXA21 is a 2-wire analyzer and can be powered by a DC power supply.

• Output is FOUNDATION Filedbus and PROFIBUS PA option
  The Power Supply voltage is 9 to 32V DC.

• Output is mA with HART
  The load resistance: impedance of electronic equipment: typically 250 Ohm
  Number of input modules: 1-sensor measurement or 2-sensor measurement.

One (1) Sensor module (1 input):
16 to 40 V DC (for analog sensor of pH/ORP, SC and DO)
17 to 40 V DC (for ISC)
21 to 40 V DC (for SA11 SENCOM Smart Adapter connected)
Two (2) Sensor modules (2 inputs):
22.8 to 40 V DC (for analog sensor of pH/ORP, SC and DO)

Figure 2.8 Supply Voltage and Load Resistance

Open the front panel and remove the wiring covers to make the terminal block accessible.

Cables, terminals and glands for FOUNDATION Fieldbus or PROFIBUS PA

Wire and install the system by referring to chapter 2 in the FLXA21 User’s manual (IM 12A01A02-71E or IM 12A01A02-72E).The FOUNDATION Fieldbus or PROFIBUS PA power supply is 9 to 32 V DC. The wiring is the same.

However, for the FOUNDATION Fieldbus or PROFIBUS PA cables, see Table 2.1.

Table 2.1 FOUNDATION Fieldbus or PROFIBUS PA Cables and transmissible Length

Parameters| Conditions| Type A| Type B| Type C| Type D
---|---|---|---|---|---
Max DC Resistance, Ω/km| per conductor| 22| 56| 132| 20
Max Attenuation, dB/km| 1.25 f, (39 kHz)| 3.0| 5.0| 8.0| 8.0
Gauge| —| #18 AWG

(0.82 mm2)

| #22 AWG

(0.32 mm2)

| #26 AWG

(0.13 mm2)

| #16 AWG

(1.25 mm2)

Max Length, meters| —| 1,900| 1,200| 400| 200

Note: 1900 m is trunk + sum of Spurs (Max length type A cable)

Yokogawa recommends the use of Type A.
Usage of Type B and D is restricted.
Yokogawa does not recommend the use of Type C.

Table 2.2 Recommended length of Spur Cables

Number of spur cables| Length of a non- intrinsically safe spur cable
---|---
15-16| 60 m
13-14| 90 m
1-12| 120 m

Note:

1 device per spur.
Keep as short as possible (min 1 m)

DIP switches
Figure 2.4 shows the DIP switches for setting the address and write protection.
Normally, you do not have the change them from the default settings.

Figure 2.4 DIP switches

Grounding

The way of connecting the grounding is different from FLXA202, FLXA21.

• FLXA202
  The ground cable is connected to the outer terminal marked

• FLXA21
  The ground cable is connected to the inner terminal marked

Connection of the power supply

The power supply is connected to the terminals marked with + and – which corresponds with the polarity of the DC power supply. The shield of cable is connected to the terminal marked , then replace ground wiring cover. For details, refer to the User’s Manual IM 12A01A03-01EN.

CAUTION

The FLXA202/FLXA21 is used with a DC power supply. Do not use an alternating current or 100 volt mains power supply.

Wiring covers

FLXA202

NOTE

Wiring covers are required intrinsic safety (Type is -C*).
In the case of type -S5,only wiring cover 1 is attached to the FLXA202.
In the case of other types, the cover is not attached to the FLXA202.

When two sensor modules are used, the upper-level module is for input 1 and the lower-level
module is for input 2. For ease of installation, first wire input 2 sensor on the lower-level module, and attach the wiring cover 1; then wire input 1 sensor on the upper-level module and replace the module wiring cover 2. For details, refer to the User’s Manual IM 12A01A03 01EN.

FLXA21

When two sensor modules are used, the upper-level module is for input 1 and the lower-level module is for input 2. For ease of installation, first wire input 2 sensor on the lower-level module (A), and attach the wiring cover; then wire input 1 sensor on the upper-level module (B) and replace the module wiring cover (C).

When all wiring is completed and all wiring covers have been installed, the front panel can be closed and the power can be switched on. For details, refer to the User’s Manual IM 12A01A03- 01EN.

Wiring the sensor

The FLXA202/FLXA21 can be used with a wide range of commercially available sensor types, both from Yokogawa and other manufacturers.
Terminal screw size is M4, and torque of screw up is 1.2N•m
Pin terminal, ring terminal and spade terminal can be used.
Pin terminal: pin diameter: max. 1.9mm
Ring and spade terminal: width: max. 7.8mm

For details on the sensors, refer to the respective instruction manuals of the sensors.
See User’s Manual IM 12A01A03-01EN for more information on wiring the sensor.

CAUTION

Confirm that all locking-tabs (including for BLANK slots) of FLXA21 are in “Lock” position before you close the front panel. If the locking-tabs are in “Unlock” position, the front panel may be interfered with locking-tabs.

CAUTION

• Do not tighten up four front panel screws one by one.
• Each front panel screw should be tightened up in two times of screwing. And, firstly the screw at the upper left should be screwed a bit, the next is at the lower right, third is at the upper right, and fourth is at the lower left. The second round is the same sequence again to tighten up four screws.
• Do not use an electric screwdriver with high revolutions. If an electric screwdriver is used for these front panel screws, the revolutions of the electric screwdriver should be less than 400 rpm.
• Four screws should be tightened to the following torque; 0.8 to 0.9 N•m

Operation

When all wiring is completed, turn on the power to the instrument. Make sure that the LCD screen turns on, and then the Quick-setup appears. When you use SENCOM SA and connect no SENCOM SA or incompatible sensors, an error appears to indicate inappropriate setting or measurement error. If configurations are not proper, an error may be displayed, or the measurement values may be incorrect. Check the initial settings and change them to suit your purpose. For details, refer to the following User’s Manual.

://web-material3.yokogawa.com/IM12A01A03-31EN.pdf)
FLXA202/FLXA21 2-Wire Analyzer Operation of SC| IM 12A01A03-32EN
FLXA202/FLXA21 2-Wire Analyzer Operation of ISC| IM 12A01A03-33EN
FLXA202/FLXA21 2-Wire Analyzer Operation of DO| IM 12A01A03-34EN
FLXA202 2-Wire Analyzer Operation of SENCOM SA-pH/ORP| IM 12A01A03-36EN
FLXA202 2-Wire Analyzer Operation of SENCOM SA-SC| IM 12A01A03-37EN

Change language

The default language setting for the FLXA202/FLXA21 is English. To select a different language other than English, refer to the User’s Manual
IM 12A01A03-01EN.

Operation

According to the sensor to be used, refer to appropriate user’s manual about operation.

Maintenance

Periodic maintenance

The FLXA202/FLXA21 requires very little periodic maintenance, except to make sure the front window is kept clean in order to permit a clear view of the display and allow proper operation of the touchscreen. If the window becomes soiled, clean it using a soft damp cloth or soft tissue. To deal with more stubborn stains, a neutral detergent may be used.

When you must open the front cover and/or glands, make sure that the seals are clean and correctly fitted when the unit is re-assembled in order to maintain the housing’s weatherproof integrity against water and water vapor.

The pH measurement uses high impedance sensors and may otherwise be prone to problems caused by exposure of the circuitry to condensation.

CAUTION

Never use harsh chemicals or solvents. In the event that the window does become heavily stained or scratched, refer to the parts list for replacement part numbers.

Battery
The FLXA202/FLXA21 has a logbook feature that uses a clock to provide the timings. The instrument contains a lithium cell (battery) to continue the clock function while the power is turned off. Although the cell has an expected working life of 10 years, this is not guaranteed. When this cell needs replacing, contact your nearest Yokogawa service center.

Periodic maintenance of the sensor

Please follow the manual of each sensor about the maintenance of the sensor.

• Predictive maintenance
  The FLXA202/FLXA21 has a unique prediction function (wellness check). By making settings concerning the sensor wellness check, you can grap the condition of the sensor in the gauge display in the Detail screen and carry out predictive maintenance.

Revision Record

• Jul. 2021/11th Edition Change the standards and nameplates, addition IM. (pages 2, 5, 7,8)
• Jan. 2021/10th Edition Revised overall
• Mar. 2018/9th Edition Change the location of the nameplate, addition of Type n, deletion of stainless steel housing, etc.
• Oct. 2015/8th Edition Addition of FLXA202
• Apr. 2015/7th Edition Change of “type of ground” of the stainless steel housing (pages 14 and 15), Note for wall mounting (pages 14 and 15)
• Oct. 2014/6th Edition Correction of discriptions and words
• Oct. 2013/5th Edition Addition of MONITOR display, Correction of discriptions and words
• Sep. 2013/4th Edition Pages are significantly reduced
• Feb. 2012/3rd Edition: Addition of descriptions and drawings for intrinsically safe type, Change of descriptions of messages on displays, Change of figures of housing due to change of position of external grounding for stainless steel housing, Change of figures of wiring covers, Change of description of message language due to addition of message languages, And, other corrections
• Aug. 2010/2nd Edition: Followings are mainly revised; Addition of grounding terminal position on stainless housing with specific mountings, Addition of plate position on stainless housing with specific coatings, Addition of explanation of sleeve for grounding wire for plastic housing, Correction of torques, Addition of Note, Warning etc., Addition of detail descriptions for wire terminals, Addition of drawings of housing with hood, Addition of example displays for calculated data and redundant system, Addition of explanation of passwords, Correction of errors on the User setting tables
• May 2010/1st Edition Newly published

Yokogawa Electric Corporation
2-9-32 Nakacho, Musashino-shi, Tokyo 180-8750, JAPAN
http://www.yokogawa.com/

References

• Yokogawa Electric Corporation
• 2-Wire Transmitter/Analyzer FLXA202 | Yokogawa Electric Corporation

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