Rosemount Analytical RB Operating Manual

Model RB

Threaded In-Line, Submerged or
Ball-valve Insertion pH Sensor

For additional information, please refer to enclosed DVD

or visit our website at www.emersonprocess.com/raihome/liquid/.

CAUTION

The solution used during calibration is an acid and
should be handled with care. Follow the directions of
the acid manufacturer. Wear the proper protective
equipment. Do not let the solution come in contact
with skin or clothing. If contact with skin is made,
immediately rinse with clean water.

WARNING

Before removing the sensor, be absolutely certain
that the process pressure is reduced to 0 psig and
the process temperature is lowered to a safe level!

WARNING

The wetted sensor materials may not be compatible
with process com position and operating conditions.
Application compat ibility is entirely the

responsi-

bility of the user.

CAUTION

SENSOR/PROCESS APPLICATION COMPATIBILITY

SPECIFICATIONS

Sensor Type: Poison Resistant pH
Measured Range: pH: 0-14
Maximum Temperature:

266°F/130°C at 40 psig/276 KPa

Maximum Pressure: 150 psig/1035 KPa at 158°F/70°C
Maximum Insertion/Retraction Pressure:

(option 546)

65 psig/448 KPa at 158°F/70°C

(option 547) 40 psig/276 KPa at 266°F/130°C

Instruction Sheet

PN 51A-RB
June 2012/rev.B

MODEL RB 546

submersion/In-line

pH Sensor

MODEL RB 547

Ball Valve Insertion

pH Sensor

ATEX DIRECTIVE

Special Conditions for safe use

1. All pH/ORP sensors have a plastic enclosure
which must only be cleaned with a damp cloth to
avoid the danger due to a build up of an electro­static charge.

2. All pH/ORP sensor Models are intended to be in
contact with the process fluid and may not meet
the 500V r.m.s. a.c. test to earth. This must be
taken into consideration at installation.

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STORAGE AND MAINTENANCE

Model RB pH sensors require little care or maintenance.
Simple guidelines follow:

During storage, sensors should be kept near room tem­perature and remain capped on the measuring end.
These caps supplied from the factory are filled with a
weak pH 7 buffer in order to keep the sensor wet.
Sensors in storage should be checked semi-annually to
assure that the cap retains moisture, if the pH 7 buffer
evaporates, it may be replaced with ordinary tap water.

Cleaning of the pH sensor is easy. The reference usually
does not require maintenance. Should a coating form
over the exposed portion of the reference, it can usually
be scraped off with a small penknife. Care must be taken
not to break the glass when scraping the reference.

Glass pH electrodes can be cleaned in a number of
ways. Scaling, oils, and other stubborn coatings can
usually be removed by soaking the reference in 3-10%
HNC solution for a few minutes and then rinsing under
tap water. Very heavy coatings may require more than
one soaking. Simple cleaning of minor coatings can
often be accomplished by directing a stream of clean

tap water directly onto the glass. Wiping the glass with
a clean, soft cloth may be sufficient with new sensors.
Care must be taken with this approach as the glass
may break when mishandled.

Oils or greases that can accumulate on the glass bulb
may not be visible to the eye. To remove these, stir the
sensor in a solvent such as isopropyl alcohol. Heavy
build-up may require a number of alcohol cycles followed
by wiping with a soft cloth. A dish soap may also be used.

Sensor cables should be run through conduit or be pro­tected from the environment, they are not weather­proof. Do not allow cables and connectors to become
wet, lay on the ground or across equipment, etc.
Cables should not be abraded, pinched, twisted or
sharply bent.

MODEL RB MAINTENANCE

FIGURE 1. Sensor Dimensions, Submersion/In-Line

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MODEL RB INSTALLATION

FIGURE 2. Sensor Dimensions, Ball Valve Insertion

FIGURE 4. Sensor Dimensions, Ball Valve Insertion

FIGURE 3. Sensor Dimensions, Ball Valve Insertion

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FIGURE 5. Wiring

FIGURE 6. Wiring Models 56,1056, 1057, and 1066

MODEL RB WIRING

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FIGURE 7. Wiring, Model 5081

FIGURE8. Wiring, Model XMT

MODEL RB WIRING

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MODEL RB WIRING

FIGURE 9. Wiring, Model 6081

FIGURE 10. Wiring, Model 54e

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MODEL RB ORDERING

ACCESSORIES

PART NUMBER DESCRIPTION

RB5104-0120V

20" Titanium Kynar Viton retractable insertion tube

RB5104-0120E

20" Titanium Kynar EPDM retractable insertion tube

Other Accessories

MODEL RB PH SENSOR – ORDERING INFORMATION

LEVEL 1 O-RING MATERIAL

V

Viton

E

EPDM

K

Kalrez

LEVEL 2 BODY

546

¾" MNPT Inline & Submersion

547 Replacement cartridge valve insertion (tube ordered separately)

Model RB pH Sensor

LEVEL 3 MEASURING ELECTRODE

R J Glass high performance

LEVEL 4 TIP CONFIGURATION

DT Dual notch teflon junction with solution ground

LEVEL 5 TEMPERATURE COMPENSATION

C PT100 RTD

LEVEL 6 BODY OPTIONS

S Standard body 546 & replacement 547 options

LEVEL 7 INSERTION DEPTH

0.5

0.5" for option 546 only

N None, standard configuration for option 547 only

LEVEL 8 CABLE CONFIGURATION

15E 15' cable with reference on separate wire
30E 30' cable with reference on separate wire

LEVEL 9 LEAD TERMINATIONS

TT All tinned leads

Credit Cards for U.S. Purchases Only.

The right people,
the right answers,
right now.

ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE

http://www.rosemountanalytical.com

Specifications subject to change without notice.

Emerson Process Management

2400 Barranca Parkway
Irvine, CA 92606 USA
Tel: [phone]
Fax: [phone]

http://www.rosemountanalytical.com

© Rosemount Analytical Inc. 2012

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