Rosemount Analytical 245 Operating Manual

TM

Rosemount

245

Toroidal Flow-Through Conductivity Sensor

Instruction Manual

LIQ-MAN-245

Rev. E

June 2017

Rev.

Date

Notes

added under Section 1.

About This Document

This manual contains instructions for installation and operation of the 245
Sanitary Flow-Through Toroidal Conductivity Sensor. The following list provides
notes concerning all revisions of this document.

Level

A 2/04 This is the initial release of the product manual. The

B 1/08 Addition of section 1.7 on page 5

C 3/12 Update pages 12 and 16

D 01/14

manual has been reformatted to reflect the Emerson
documentation style and updated to reflect any changes
in the product offering.

The manual has been reformatted to reflect the Emerson
documentation style and updated to reflect any changes
in the product offering. Wiring diagrams were also

Essential Instructions

DANGER
HAZARDOUS AREA INSTALLATION

Read this page before proceeding

Rosemount designs, manufactures, and tests its products to meet many national and international
standards. Because these instruments are sophisticated technical products, you must properly install, use,
and maintain them to ensure they continue to operate within their normal specifications. The following
instructions must be adhered to and integrated into your safety program when installing, using, and
maintaining Rosemount products. Failure to follow the proper/ instructions may cause any one of the
following situations to occur: Loss of life; personal injury; property damage; damage to this instrument; and
warranty invalidation.

• Read all instructions prior to installing, operating, and servicing the product. If this Instruction Manual is
not the correct manual, telephone [phone] and the requested manual will be provided. Save this
Instruction Manual for future reference.

• If you do not understand any of the instructions, contact your Rosemount representative for clarification.

• Follow all warnings, cautions, and instructions marked on and supplied with the product.

• Inform and educate your personnel in the proper installation, operation, and maintenance of the product.

• Install your equipment as specified in the Installation Instructions of the appropriate Instruction Manual
and per applicable local and national codes, for example, ANSI B16.5. Connect all products to the proper
electrical and pressure sources.

• To ensure proper performance, qualified personnel should install, operate, and maintain the product.

• When replacement parts are required, ensure that qualified people use replacement parts specified by
Rosemount Analytical. Replacement of original components with those constructed from alternative
materials will void any CSA, FM, and BASEEFA/CENELEC agency approvals that were applicable to the original
device. Furthermore, replacement of original components with those constructed from alternative materials
might change the pressure, temperature, and/or performance specifications from those of the original
configuration. Ensure replacement parts are compatible with process requirements. Unauthorized parts and
procedures can affect the product’s performance, place the safe operation of your process at risk, and may
result in fire, electrical hazards, or improper operation.

• Ensure that all equipment doors are closed and protective covers are in place, except when maintenance is
being performed by qualified persons, to prevent electrical shock and personal injury.

Installations near flammable liquids or in hazardous area locations must be carefully evaluated by qualified
on site safety personnel. This sensor is not Intrinsically Safe or Explosion Proof.

To secure and maintain an intrinsically safe installation, the certified safety barrier, transmitter, and sensor
combination must be used. The installation system must comply with the governing approval agency (FM,
CSA, BASEEFA/CENELEC, or ATEX) hazardous area classification requirements. Consult your analyzer/
transmitter instruction manual for details.
Replacement of original components with those constructed from alternative materials will void any CSA,
FM, and BASEEFA/CENELEC agency approvals that were applicable to the original device.

Proper installation, operation and servicing of this sensor in a Hazardous Area Installation is entirely the
responsibility of the user.

CAUTION: SENSOR/PROCESS APPLICATION COMPATIBILITY

The wetted sensor materials may not be compatible with process com position and operating conditions.
Replacement of original components with those constructed from alternative materials might change the
pressure, temperature, and/or performance specifications from those of the original sensor configuration.
Application compatibility is entirely the responsibility of the user.

Figure 1-1

1.1

Figure 1-1

Figure 1-2

Figure 1-3

Figure 1-4

Figure 1-5

Figure 1-6

Figure 1-7

Figure 1-8

Figure 1-9

Figure 1-10

Figure 2-1

1-1

1-2

1-3

1-4

1-5

1-6

1-7

1-8

Instruction Manual Table of Contents

LIQ-MAN-245 June 2017

Contents

Section 1: 245 Sensor

Features and Applications ............................................................................... 1

Specifications ................................................................................................ 1

1.2

Ordering Information .................................................................................... 2

1.3

Installation ..................................................................................................... 3

1.4

Calibration ...................................................................................................... 4

1.5

Calibration Verification ................................................................................... 5

1.6

Wiring ............................................................................................................ 5

1.7

Maintenance .................................................................................................. 7

1.8

Section 2: Troubleshooting ............................................................................... 9

List of Tables

1.1 Nominal Cell Constants for 245 Sensors ......................................................... 4

2.1 Resistance Values for RTD .................................................................................. 9

2.2 Sensor Wire Resistance Values with Instrument Cable Disconnect ................... 9

List of Figures

Figure 1-2

Figure 1-3
Figure 1-4
Figure 1-5
Figure 1-6
Figure 1-7

Figure 1-8

Figure 1-9

Figure 1-10

Figure 2-1

Table of Contents i

Sanitary Flow-Through Toroidal Conductivity Sensor ........................ 2

245 Junction Box with RTD Diagram ............................................... 4

Sensor to Junction Box Wiring .......................................................... 5

Extension Cable ............................................................................... 6

Wiring Extension Cable to 54ec ........................................................ 6

Wiring Extension cable to 1056 and 56............................................. 6

Wiring Extension cable to Xmt-T (Panel Mount) ................................ 6

Wiring Extension Cable to Xmt-T (Pipe/Wall Mount) ......................... 7

Wiring Extension Cable to 1066-T .................................................... 7

Wiring Extension Cable to 5081T ..................................................... 7

Sensor Circuit for Troubleshooting ................................................. 10

Table of Contents Instruction Manual

June 2017 LIQ-MAN-245

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