Emerson ROSEMOUNT 320HP Instruction Manual

Artisan Technology Group is your source for quality

new and certied-used/pre-owned equipment

• FAST SHIPPING AND

DELIVERY

• TENS OF THOUSANDS OF
IN-STOCK ITEMS

• EQUIPMENT DEMOS

• HUNDREDS OF
MANUFACTURERS

SUPPORTED

• LEASING/MONTHLY
RENTALS

• ITAR CERTIFIED
SECURE ASSET SOLUTIONS

SERVICE CENTER REPAIRS

Experienced engineers and technicians on staff
at our full-service, in-house repair center

Instra

Remotely inspect equipment before purchasing with
our interactive website at www.instraview.com

Contact us: (888) 88-SOURCE | [e-mail] | www.artisantg.com

SM

REMOTE INSPECTION

View

WE BUY USED EQUIPMENT

Sell your excess, underutilized, and idle used equipment
We also offer credit for buy-backs and trade-ins

www.artisantg.com/WeBuyEquipment

LOOKING FOR MORE INFORMATION?

Visit us on the web at www.artisantg.com for more
information on price quotations, drivers, technical

specications, manuals, and documentation

High Purity pH Sensor

Instruction Manual

PN 51-320HP/rev.J
May 2006

Model 320HP

CAUTION

SENSOR/PROCESS

APPLICA

TION COMPATIBILITY

The wetted sensor materials may not
be compatible with process com­position and operating conditions.
Application compatibility is entirely
the responsibility of the user.

DANGER — HAZARDOUS AREA

INSTALLATION

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 or
BASEEFA/ CENELEC) hazardous area clas­sification requirements. Consult your analyz­er/ transmitter instruction manual for details.

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

ESSENTIAL INSTRUCTIONS

READ THIS PAGE BEFORE PROCEEDING!

Rosemount Analytical 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 Analytical 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. Connect
all products to the proper electrical and pressure sources.

• To ensure proper performance, use qualified personnel to install, operate,
update, program, and maintain the product.

• When replacement parts are required, ensure that qualified people use replace­ment parts specified by Rosemount. Unauthorized parts and procedures can
affect the product’s performance and place the safe operation of your process at
risk. Look alike substitutions 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.

Emerson Process Management

Liquid Division

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

http://www.raihome.com

© Rosemount Analytical Inc. 2006

About This Document

This manual contains instructions for installation and operation of the Model 320HP High Purity pH
Sensor. The following list provides notes concerning all revisions of this document.

Rev

. Level Date Notes

0 1/01 This is the initial release of the product manual. The manual has been refor-

matted to reflect the Emerson documentation style and updated to reflect any
changes in the product offering.

A 7/02 Updated multiple drawings throughout.

B 8/02 Added drawing 40105544.

C 11/02 Revised figure 2-5 on page 6.

D 1/03 Updated drawings on pages 9 & 10.

E 11/03 Update figure 2-5.

F 5/04 Add wiring drawings to models Xmt & 5081.

G 12/04 Updated Figure 2-9 on page 8.

H 1/05 Revised Figures 2-5 and 2-12; delete Figures 2-3 and 2-6

I 5/05 Revised drawings on pages 8 & 9.

J 5/06 Revised Table 5-1 on page 19.

MODEL 320HP TABLE OF CONTENTS

MODEL 320HP

HIGH PURITY PH SENSOR

TABLE OF CONTENTS

Section Description Page

1.0 DESCRIPTION AND SPECIFICATIONS............................................................................1

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

1.2 Operation ............................................................................................................................1

1.3 Sensor Specifications..........................................................................................................1

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

2.0 MECHANICAL INSTALLATION .........................................................................................3

2.1 General ...............................................................................................................................3

2.2 Unpacking ...........................................................................................................................3

2.3 Preparation for Installation .................................................................................................3

2.4 Installation Inspection ........................................................................................................5

3.0 OPERATION .....................................................................................................................11

3.1 General .............................................................................................................................11

3.2 Calibration .........................................................................................................................11

4.0 MAINTENANCE AND TROUBLESHOOTING ................................................................12

4.1 General .............................................................................................................................12

4.2 Preventative Maintenance ................................................................................................12

4.3 Troubleshooting ...............................................................................................................13

4.4 Maintenance .....................................................................................................................14

5.0 PARTS LIST ....................................................................................................................19

5.1 General .............................................................................................................................19

6.0 RETURN OF MATERIALS ...............................................................................................21

6.1 General .............................................................................................................................21

6.2 Warranty Repair................................................................................................................21

6.3 Non Warranty Repair ........................................................................................................21

i

MODEL 320HP TABLE OF CONTENTS

MODEL 320HP

HIGH PURITY PH SENSOR

TABLE OF CONTENTS (CONT.)

LIST OF FIGURES

Figure No. Title Page

2-1 Liquid Junction Installation....................................................................................... 3

2-2 Model 320HP Dimensional Drawing ........................................................................ 4

2-3 Model 320HP-50/51/54 Wiring to Models 1054A/B, 2054, 2081, 1181, 1003, 1050 5

2-4 Model 320HP-55 Wiring to Models 54/54e, 81, 3081, 4081, and 5081 ................... 6

2-5 Model 320HP-55 Wiring to Model Xmt-P-HT-10...................................................... 7

2-6 Model 320HP-58 Wiring to Model Xmt-P-HT-10...................................................... 7

2-7 Model 320HP-58 Wiring to Models 54e, 81, 3081, 4081, and 5081 ........................ 8

2-8 Model 320HP-55 Wiring to Model 1055-22-32 ........................................................ 9

2-9 Model 320HP-58 Wiring to Model 1055-22-32 ........................................................ 9

2-10 Model 320HP Wiring to Model 1055-01-10-22 ........................................................ 10

3-1 Buffer Cup Fixture ................................................................................................... 11

4-1 Preamplifier Check ................................................................................................. 14

4-2 Reference Electrode Check..................................................................................... 16

4-3 Glass Electrode Test Method .................................................................................. 17

4-4 Temperature Compensator Check .......................................................................... 17

5-1 Model 320 HP (Front View and Side View) Component Locator............................. 20

LIST OF TABLES

Table No. Title Page

4-1 Troubleshooting without Diagnostics ....................................................................... 13

4-2 Troubleshooting with Diagnostics ............................................................................ 15

4-3 Temperature vs. Resistance ................................................................................... 18

4-4 R

o

& R1 Value for Temperture Compensation Elements ......................................... 18

5-1 Parts List.................................................................................................................. 19

ii

1

MODEL 320HP SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

SECTION 1.0

GENERAL DESCRIPTION AND SPECIFICATIONS

• CORROSION-RESISTANT, WEATHERPROOF CONSTRUCTION permits installation in
almost any environment.

• UNIQUE SENSOR DESIGN provides accurate, stable pH measurement in high purity water.

• ELECTRONICALLY SHIELDED GLASS ELECTRODE protects against electrostatic
noise pickup.

• INCLUDES ROTAMETER AND NEEDLE VALVE to assure an accurate, stable measure­ment.

• CONVENIENT SHELF to hold electrodes for buffer calibration.

1.1 FEATURES AND APPLICATIONS

The Rosemount Analytical Model 320HP High-Purity
pH Sensor is uniquely designed for pH measurement
in aqueous solutions of very low dissolved solids con­tent (below 50 microsiemenss). The sensor assembly
consists of a stainless steel flow cell, glass electrode,
a double junction Kynar1reference cell with specially
designed liquid junction, temperature compensator,
rotameter, needle valve and a weatherproof junction
box containing an optional preamplifier. All compo­nents are mounted on an ABS plate which may be
attached to a wall or clamped (optional) to a two-inch
pipe.

The electrical resistance of high-purity water is very
high, typically one megohm or more. Such liquids can
generate a considerable static charge when flowing
over an essentially nonconductive (plastic) surface.
An adequate discharge path to a good earth ground
must be provided for this static charge; otherwise, it
can be easily picked up by the high impedance pH
electrode causing excessive noise in the measuring
signal. The well-grounded metallic flow cell in the
Model 320HP High-Purity pH Sensor surrounds the
pH electrode and provides an effective discharge path
to ground for any static charges. It also serves as an
electronic shield against outside interference from AC
power lines, arcing electrical equipment, and other
similar sources of noise.

1.2 OPERATION

Accurate pH measurement in high-purity water
depends on a stable reference junction potential, and
this requirement is met by the unique design of the ref­erence junction in the high-purity sensor. The con­struction of the junction serves to minimize any
changes in junction potential which are caused by vari­ations in flow rate of the high-purity water over the
junction surface. The flowmeter and needle valve aid in
maintaining the low, constant sample flow required for
a stable reference junction potential.

1.3 SENSOR SPECIFICATIONS

Style: Flow-through

Wetted Materials: Kynar, Buna-N, glass, stainless

steel, ABS, Teflon2Viton2, Polypropylene

Range: 0 to 14 pH

Sample Temperature: 4°C to 71°C (39°F to 160°F)

Sample Pressure Required: 5 to 10 psig

Sample Flow Rate: Constant in the region of 0.8 to

2.4 gal/hour

Process Connections: 1/4-inch tube

Reference Electrode: Sealed, double junction

Measuring Electrode: Glass, GPHT (0-13pH)

1

Kynar is a registered trademark of Elf Atochem North America, Inc.

2

Teflon and Viton are registered trademarks of E.I. duPont de Nemours & Comp.

1.4 ORDERING INFORMATION

Model 320HP Flow Through High-Purity pH Sensor is designed for use when conductivity is below 50 μS.

The sensor includes a 316 stainless steel flow cell, a double junction Kynar reference cell with specially
designed liquid junction, pH glass electrode, temperature compensator, and a weatherproof junction box contain­ing an optional preamplifier. A rotameter and a needle valve are included on the input side of the flow cell for
monitoring and control of the sample flow. All components are mounted on an ABS plate which is suitable for
wall or pipe mounting.

2

MODEL 320HP SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

MODEL

320HP FLOW THROUGH HIGH-PURITY pH SENSOR

Code Measuring Electrode (required selection)

10 General Purpose pH

Code Preamplifier (

required selection

)

50 Preamp and 3K T.C. for use with Model 1181pH (requires cable PN 9200000)
54 Preamp and Pt100 T.C. for use with Models 1054A/B, 2054, & 2081 (requires cable PN 9200000)
55 No Preamp and Pt100 T.C. for use with Models 54/54e, 1055, 81, 3081, 4081, 5081, Xmt, and

SCL-P (requires cable PN 661-646983)
56 Preamp and Pt100 T.C. for use with SCL-P (requires cable PN 661-892884)
57 Preamp and Pt100 T.C. for use with Model 2700 (requires cable PN 661-898695)
58 Preamp and Pt100 T.C. for use with Models 54/54e, 81, 3081, 4081, 5081, and Xmt (requires

cable PN 9200273)

NOTE: Interconnecting cable is required. Specify length.

PART # DESCRIPTION

2001492 Tag, Stainless Steel, specify marking (Formerly Code -40)
22698-02 Preamplifier, Plug-in, 1181/1050 compatible
22698-03 Preamplifier, Plug-in, 1054/A, 2054, 2081 compatible
23722-00 Pipe/Wall Mounting Bracket (Formerly Code -30)

661-646983 Cable, 4 conductor, 1 coax (for option -55), per ft
661-892884 Cable, 7 conductor (for option -56), per ft
661-898695 Cable, 5 conductor (for option -57), per ft

9200000 Cable, 4 conductor, 20AWG, 1 pair shielded (for option -50 and -54), per ft

9200273 Cable, 11 conductor, shielded, unprepped (for option -58), per ft

320HP 10 50 EXAMPLE

ACCESSORIES

MODEL 320HP SECTION 2.0

MECHANICAL INSTALLATION

SECTION 2.0

MECHANICAL INSTALLATION

2.1 GENERAL

The sensor requires some customer assembly, there­fore care should be taken that the instructions are fol­lowed carefully to ensure all parts are properly
installed.

2.2 UNPACKING

Inspect the shipping container. If evidence of damage
is noted, contact the carrier. If no damage is evident,
open the container and inspect the sensor for damage.
Again, if damage is apparent, notify the carrier. Save
the shipping container and all packing material. This
will help prevent damage during transit should the sen­sor ever require factory servicing.

2.3 PREPARATION FOR INSTALLATION

Prepare the sensor for installation as follows:

1. Remove the reference cell by turning it about ten
degrees clockwise and pulling it straight out. Hold
the cell in the position shown in Figure 2-1 and
remove the solid plug from the reference cell body.
Gently break away any salt crust which may have
formed around or inside the opening. Top off the ref­erence cell with distilled water, tapping the cell gen­tly to dislodge any air bubbles. Install the liquid junc­tion supplied (PN 2001317). It is not necessary to
use thread sealants. Teflon tape may be used if a
loose fit is observed. The use of sticky “pipe dope”
compounds should be strictly avoided. Use care not
to get any greasy materials on the surface of the liq­uid junction. As the plug is installed, beads of water
should appear on the surface of the liquid junction
as water is forced through the porous material. If
water beads are not present on the junction surface
the liquid junction should be replaced (PN 2001317).

2. Lubricate the o-ring on the reference cell using the o­ring lubricant supplied (PN 2001928). Place the ref­erence cell back on the flow cell. Rotate it counter­clockwise until the ears seat in the retainer brackets.

3. Install sensor panel so the process flow will enter at the
bottom of the cell and exit from the top (Figure 2-2).
Make sure that the panel is securely attached to the
mounting surface.

2.3.1 Plumbing. Plumb the sensor from sample line to

discharge. Be careful not to over tighten these con­nections. Plastic parts can be cracked by excessive
force. The distance from the sample line should be as
short as possible to minimize lag time in control appli­cations.

2.3.2 Electrical Installation. Figures 2-3 through 2-10
provide the guidelines for wiring the 320HP sensor to
the ABS junction box with a built-in preamplifier to var­ious analyzer/transmitter instruments.

Refer to Figure 2-2 and proceed as follows:

1. Make sure the conduit fittings are properly attached
to the enclosure junction box.

2. Install the pH electrode into the sensor’s flow cell as
shown in Figure 2-2.

3. Plug the preamplifier into the junction box.

4. Connect the pH electrode to the preamplifier.

5. Connect the temperature compensator.

6. Ensure that guard wire is connected to the stainless
steel flow cell.

7. Make the required connections to the instrument.
Use care to dress the wires so they are not exposed
and susceptible to shorting or grounding.
(Recommended cables are listed on page 2)

NOTE

Do not run signal cable next to A.C. Iines.

8. Attach the junction box cover, making sure the gas­ket seal keeps moisture out of the box.

FIGURE 2-1. Liquid Junction Installation

3

4

MODEL 320HP SECTION 2.0

MECHANICAL INSTALLATION

FIGURE 2-2. Model 320HP Dimensional Drawing

DWG. NO. REV.

4320HP01 C

MILLIMETER

INCH

1

Shipped loose customer install and wire. For electrical
wiring see Table above.