Rosemount 396, 397, 398 pH/ORP Sensor Manuals & Guides

Reference Manual

0809-0100-3396

0

February 2019

Rosemount™ 396/396VP/397/398/398VP

pH/ORP Sensors

Rev. AA

hasgkas

Essential Instructions

Read this page before proceeding!

merson designs, manufactures and tests its products to meet many national and international stan-

E
dards. Because these sensors 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
sensor; and warranty invalidation.

• Read all instructions prior to installing, operating, and servicing the product.

• If you do not understand any of the instructions, contact your Emerson 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

Reference 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 Emerson. Unauthorized parts and procedures can affect the product's
performance, place the safe operation of your process at risk, and VOID YOUR WARRANTY.
Third-party 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.

The information contained in this document is subject to change without notice.

DANGER

Hazardous Area InstallationN

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

To secure and maintain an intrinsically safe installation, an appropriate transmitter/safety barrier/sensor
combi nation must be used. The installation system must be in accordance with the governing approval
agency (FM, CSA or BASEEFA/CENELEC) hazardous area classification requirements. Consult your trans­mitter instruc tion manual for details.

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

CAUTION

Sensor/Process Application Compatibility

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

Reference Manual Table of Contents

00809-0100-3396 February 2019

Contents

Section 1: Description and Specifications

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

1.2 Specifications ......................................................................................................3

1.3 Product Certifications..........................................................................................4

1.4 Ordering Information...........................................................................................6

Section 2: Installation

2.1 First Time Installation ..........................................................................................9

2.2 Unpacking and Inspection .................................................................................10

2.3 Mounting ..........................................................................................................10

2.4 Electrical Installation..........................................................................................17

Section 3: Startup and Calibration

3.1 Sensor Preparation ............................................................................................33

3.2 Calibration Using Buffer Solution or Grab Sample...............................................33

Section 4: Maintenance

4.1 Electrode Cleaning.............................................................................................35

4.2 Automatic Temperature Compensator...............................................................36

Section 5: Troubleshooting ....................................................................................37

Section 6: Accessories

6.1 Accessories........................................................................................................39

EC Declaration of Conformity ...............................................................................41

Intrisicallly Safe Sensor Installation Drawing - FM ......................................47

Table of Contents i

Table of Contents Reference Manual

February 2019 00809-0100-3396

ii Table of Contents

Reference Manual Description and Specifications

00809-0100-3396 February 2019

Section 1: Description and Specifications

1.1 TUpH Features and Applications

The low maintenance and disposable Rosemount 396, 396VP, 397, 398, and 398VP TUpH sensors

offer long life and high performance in measuring pH or ORP in aqueous solutions in pipelines, open

tanks, or ponds.

These TUpH sensors feature a large area reference junction for maximum resistance to process

coatings, generally found in dirty, high solid applications. In addition, the secondary helical refer-

ence pathway serves as added protection from poisoning ions. The simplified construction,

designed with user convenience in mind, does not require electrolyte replenishment or any

component replacement. All models feature a large glass bulb for increased resistance to the

effects of aging for longer life.

1.1.1 Rosemount 396 and 396VP Sensor Features and Applications

Rosemount 396/396VP sensors are constructed of

polypropylene and stainless steel and are completely

sealed by EP (ethylene propylene) to eliminate process

intrusion.

Sensors are specially designed for improved life in

harsh, dirty applications such as lime slurry waste treat-

ment and paper machine headbox and pigment/dye

applications where large quantities of suspended solids

are present. Installation is easily achieved through a

wide variety of mounting configurations.

1.1.2 Rosemount 397 Sensor Features and Applications

The Rosemount 397 is housed in a highly chemical

resistant polypropylene body and completely sealed with

EP to eliminate process intrusion. The Rosemount 397

body is specifically designed for use with the Quik-Loc Kit

which consists of an adapter and coupler. The PEEK (poly

etheretherke tone) adapter enables the Rosemount 397

sensor to fit into a 1 in. MNPT Dixon coupler for quick and

easy removal without sensor cable twisting. The 316 stain

less steel DIxon coupler is sealed with EP an features

locking arms. The Quik-Loc Kit is not recommended for

use in processes with hazardous, corrosive, or strong

oxidizing chemicals due to a risk of spray and bodily hazards.

1.1.2 Rosemount 398 and 398VP Sensor Features and Applications

The chemical-resistant construction of Tefzel, titanium, and the TUpH reference junction make

the Rosemount 398 and 398VP the ideal sensors for measuring pH in harsh process liquids. Use

these sensors to measure pH in sour water strippers, in pulp bleaching towers that use chlorine

dioxide, and in process streams containing a variety of organic solvents.

Rosemount 398 and 398VP sensors use the highest quality materials to provide superior chem-

ical resistance. The sensors are housed in a titanium tube and features an optional 1 inch MNPT

process connector for insertion, submersion, or flow-through applications. The molded Tefzel

TUpH construction is offered with a choice of seals (Viton, EPDM, or Kalrez).

Description and Specifications 1

Description and Specifications Reference Manual

February 2019 00809-0100-3396

Figure 1-1: Cross Section Diagram of the TUpH Reference Technology

All TUpH sensors are designed with a large area reference junction, helical reference pathway, and an
AccuGlass pH glass bulb. This sensor technology ensures superior performance while only requiring
minimal maintenance.

2 Description and Specifications

Reference Manual Description and Specifications

00809-0100-3396 February 2019

1.2 Specifications

Table 1-1: Percent linearity over pH

396, 396VP, 397, 398, 398VP 396, 396VP, 397, 398, 398VP

pH Range GPHT Hemi GPLR Hemi

0-2 pH 94% 93%

2-12 pH 99% 98%

12-13 pH 97% 95%

13-14 pH 92% --

Table 1-2: Rosemount 396, 396VP, 397, 398 and 398VP Specifications

Rosemount 396

396VP

Measured Ranges 0 to 14 pH 0 to 14 pH

Available pH

ACCUGLASS Types

GPHT hemi bulb or

GPLR flat bulb

Rosemount 398

398VP

ORP: -1500 mV to 1500 mV

GPHT hemi bulb or

GPLR flat bulb GPHT hemi bulb

Rosemount 397 Quik-loc Kit

0 to 14 pH

_

_

316 SST,

Wetted Materials

Process Connection

Temperature Range 0-100 °C (32-212 °F) 0-100 °C (32-212 °F) 0-100 °C (32-212 °F)

Pressure Range-

Hemi bulb

Pressure Range-

Flat bulb

Minimum

Conductivity

Preamplifier Options Remote Remote Remote

Weight/Shipping

Weight

Polypropylene, EPDM, glass

None, use 1 in. NPT

process connector,

PN 23166-00 or 23166-01

(sold separately)

100-1136 kPa abs

(0-150 psig)

100-790 kPa abs

(0-100 psig)

75 μS/cm, nominal 75 μS/cm, nominal 75 μS/cm, nominal

0.45 kg/0.9 kg (1 lb/2 lb) 0.45 kg/0.9 kg (1 lb/2 lb) 0.45 kg/0.9 kg (1 lb/2 lb) 0.45 kg/0.9 kg

Titanium, Tefzel, glass,

choice of Kalrez, Viton, or

EPDM (platinum: ORP only)

None, use 1 in. NPT
process connector,

PN 23166-00 or 23166-01

(sold separately)

100-1825 kPa abs

(0-250 psig)

100-790 kPa abs

(0-100 psig)

Polypropylene, EP, glass 316 SST, EP, PEEK

None, must use Quik­Lockit which includes 1
in. MNPT process
connection

100-790 kPa abs

(0-100 psig)

_ _

1-in. MNPT

_

(1 lb/2 lb)

Description and Specifications 3

Description and Specifications Reference Manual

February 2019 00809-0100-3396

1.3 Product Certifications

Please see online certificates for further details.

Rosemount 396/396VP:

IECEx

Sensors without preamp (pH and ORP) – Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +60 °C)

Sensors with SMART preamp (pH only) – Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +60 °C)

Sensors with standard preamp (396P only) – Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +80 °C) or

Ex ia IIC T5 Ga (-20 °C ≤ Ta ≤ +40 °C)

Per standards IEC60079-0 : 2011, IEC 60079-11 : 2011

ATEX

Sensors without preamp (pH and ORP) – II 1 G Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +60 °C)

Sensors with SMART preamp (pH only) – II 1 G Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +60 °C)

Sensors with standard preamp (396P only) – II 1 G Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +80 °C) or

II 1 G Ex ia IIC T5 Ga (-20 °C ≤ Ta ≤ +40 °C)

Per standards EN 60079-0: 2012+A11:2013, EN 60079-11:2012

FM

See online FM Certificate of Compliance for applicable sensor options:

Intrinsically Safe for use in Class I, II, and III, Division 1, Groups A, B, C, D, E, F, and G; Temperature

Class T6 Ta = -20 °C to +60 °C

Intrinsically Safe for use in Class I, Zone 0, AEx ia IIC T6 Ta = -20 °C to +60 °C

Nonincendive for use in Class I, Division 2, Groups A, B, C, and D; Temperature Class T6 Ta = -20 °C

to +60 °C

Suitable for use in Class II and III, Division 2, Groups E, F, and G; Temperature Class T6 Ta = -20 °C

to +60 °C Hazardous (Classified) Locations

IS/I,II,III/1/ABCDEFG/T6 Ta = 60 °C - 1400332; Entity; I/0/AEx ia IIC/T6 Ta = 60 °C - 1400332; Entity;

NI/I/2/ABCD/T6 Ta = 60 °C; S/II,III/2/EFG/T6 Ta = 60 °C

Per standards 3600:1998, 3610:2010, 3611:2004, 3810:2005

CSA

See online CSA Certificate of Compliance for applicable sensor options:

Sensors with preamp – Intrinsically Safe:

Class I, Division 1, Groups ABCD; Class II, Division 1, Groups EFG; Class III; Class I, Division 2, Groups

ABCD; Ambient temperature rating -20 °C to +60 °C; Ex ia IIC; T6

Sensors without preamp – Intrinsically Safe and Non-Incendive:

Class I, Division 1, Groups ABCD; Class II, Division 1, Groups EFG; Class III; Class I, Division 2, Groups

ABCD; Ex ia IIC; T6; Ambient temperature rating -20 °C to +60 °C: (Simple Apparatus)

Per standards C22.2 No. 0-10, C22.2 No. 0.4-M2004, C22.2 No. 94-M1991, C22.2 No. 142 –

M1987, C22.2 No 157 – M1992, CAN/CSA E60079-0:07, CAN/CSA E60079- 11:02, UL50 11th

Ed, UL508 17th Ed, UL913 7th Ed,, UL 60079-0: 2005, UL 60079-11: 2002

4 Description and Specifications

Reference Manual Description and Specifications

00809-0100-3396 February 2019

osemount 397/398/398VP:

R

IECEx

Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +60 °C)

Per standards IEC60079-0 : 2011, IEC 60079-11 : 2011

TEX

A

II 1 G Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +60 °C)

Per standards EN 60079-0: 2012+A11:2013, EN 60079-11:2012

FM

Intrinsically Safe for use in Class I, II, and III, Division 1, Groups A, B, C, D, E, F, and G; Temperature

Class T6 Ta = -20 °C to +60 °C

Intrinsically Safe for use in Class I, Zone 0, AEx ia IIC T6 Ta = -20 °C to +60˚C

Nonincendive for use in Class I, Division 2, Groups A, B, C, and D; Temperature Class T6 Ta = -20 °C

to +60 °C

Suitable for use in Class II and III, Division 2, Groups E, F, and G; Temperature Class T6 Ta = -20 °C

to +60 °C Hazardous (Classified) Locations

IS/I,II,III/1/ABCDEFG/T6 Ta = 60 °C - 1400332; Entity; I/0/AEx ia IIC/T6 Ta = 60 °C - 1400332; Entity;

NI/I/2/ABCD/T6 Ta = 60 °C; S/II,III/2/EFG/T6 Ta = 60 °C; Entity Parameters

Per standards 3600:1998, 3610:2010, 3611:2004, 3810:2005

CSA

Intrinsically Safe and Non-Incendive:

Class I, Division 1, Groups ABCD; Class II, Division 1, Groups EFG; Class III; Class I, Division 2,

Groups ABCD; Ex ia IIC; T6; Ambient temperature rating -20°C to +60°C: (Simple Apparatus)

Per standards C22.2 No. 0-10, C22.2 No. 0.4-M2004, C22.2 No. 94-M1991, C22.2 No. 142 –

M1987, C22.2 No 157 – M1992, CAN/CSA E60079-0:07, CAN/CSA E60079- 11:02, UL50 11th

Ed, UL508 17th Ed, UL913 7th Ed, UL 60079-0: 2005, UL 60079-11: 2002

Description and Specifications 5

Description and Specifications Reference Manual

February 2019 00809-0100-3396

1.4 Ordering Information

The Rosemount 396 pH sensor features either a standard hemi bulb or flat glass electrode. The

sensor is housed in a stainless steel body and must be used with a 1 inch MNPT threaded process

onnector (sold separately). The Rosemount 396 is not available with an integral preamplifier and

c

comes standard with a 15 ft integral cable.

Table 1-3: Rosemount 396 ordering information

Model Sensor type

396 pH/ORP Sensor

Transmitter/TC Compatibility

50 3K TC
54 Pt-100

Cable Option

_ No Selection
62 Cable without BNC

Electrode Option

_ No Selection
71 pH - GPHT Flat Glass

Typical Model Number: 396-54-62-71

(1)

(2)

(3)

1. For use with legacy transmitter models 1181, 1050, and 1003.

2. For wiring to Rosemount 1056, 1066, 1057, 56, and 5081 transmitters.

3. No selection will configure the sensor with a standard hemi bulb glass electrode.

The Rosemount 396VP sensor features a Variopol cable connection for use with a mating Variopol
interconnecting cable (sold separately).

Table 1-4: Rosemount 396VP ordering information

Model Sensor type

396VP pH/ORP Sensor

Temperature Compensation

50 3K TC
54 Pt-100
55 Pt-100 (for SMART Preamp)

(1)

(2)

Electrode Option

_ No Selection
71 pH - GPHT Flat Glass

(3)

Preamplifier Option

_ No Selection
70 SMART Preamplifier

Typical Model Number: 396VP-55-71-70

1. For use with legacy transmitter models 1181, 1050, 1003.

2. Must be selected with Option 70 for SMART Preamplifier.

3. No selection will configure the sensor with a standard hemi bulb glass electrode.

4. Must be selected with Option 55.

(4)

6 Description and Specifications

Reference Manual Description and Specifications

00809-0100-3396 February 2019

he Rosemount 398 sensor is housed in a titanium tube and made with a Tefzel reference junc-

T

tion. Sensors must be used with a 1 inch MNPT process connector (sold separately). These

sensors come with a standard 15 ft. integral cable. A preamplifier must be used if the sensor is

installed more than 15 ft. from the connected transmitter.

able 1-5: Rosemount 398 ordering information

T

Model Sensor type

398 pH/ORP Sensor

Measuring Electrode Type

10 pH - GPHT Glass
12 ORP
13 pH - GPLR Flat Glass

O-ring Material

30 EPDM
31 Viton
32 Kalrez

Transmitter/TC Compatibility

50 3K TC
54 Pt-100

Cable Option

_ No Selection
62 Cable without BNC

Typical Model Number: 398-10-30-54-62

(1)

(2)

1. For use with legacy transmitter model 1181. Not available with option 62. If selected with ORP, sensor will not come with TC.

2. For use with Rosemount transmitter models 1056, 1066, 1057, 56, and 5081. Only available with option 54.

The Rosemount 398VP sensor features a Variopol cable connection for use with a mating Variopol

interconnecting cable (sold separately).

Table 1-6: Rosemount 398VP ordering information

Model Sensor type

398VP pH/ORP Sensor

Measuring Electrode Type

10 pH - GPHT Glass
12 ORP
13 pH - GPLR Flat Glass

O-ring Material

30 EPDM
31 Viton
32 Kalrez

Transmitter/TC Compatibility

50 3K TC
54 Pt-100

Typical Model Number: 398VP-10-30-54

1. For use with legacy transmitter model 1181. If selected with ORP, sensor will not come with TC.

(1)

Description and Specifications 7

Description and Specifications Reference Manual

February 2019 00809-0100-3396

The Rosemount 397 pH sensor is housed in a polypropylene body and is designed to be used with

the Quik-Loc Kit (sold separately).

Table 1-7: Rosemount 397 ordering information

Model Sensor type

397 pH/ORP Sensor

Preamplifier/Cable

02 Without Integral Preamplifier, 15 ft (4.6 m) Cable

Measuring Electrode Type

0

1
12 ORP

Transmitter/TC Compatibility

50 3K TC
54 Pt-100

Other Options

_ No Selection
62 Cable without BNC
64 Tefzel Body Material

Typical Model Number: 397-02-10-54-62

H - GPHT Glass

p

(1)

(2)

1. For use with legacy transmitter model 1181.

2. For use with Rosemount transmiter models 1056, 1066, 1057, 56, and 5081.

8 Description and Specifications

Reference Manual Installation

00809-0100-3396 February 2019

Section 2: Installation

2.1 First Time Installation

For first time Rosemount 397 installations, using the following guide is recommended:

1. Quik-Loc Mounting (required for all first time installations)

Choose one: PN 23757-00, Quik-Loc Kit: for use in 1 in. tees; insertion depth 1.4 in. (35 mm)

2. Remote Junction Boxes (optional, recommended for sensor to analyzer distances of more
than 15 ft)

Choose one: PN 23555-00 includes preamplifier

3. Extension cables (used with remote junction boxes)

Choose one: PN 23646-01, 11 conductor, shielded, prepped

PN 9200273, 11 conductor, shielded, unprepped

For first time Rosemount 396/396VP/398/398VP installations, using the following guide is
recommended:

1. Process Connector Accessories (required for all first time installations with 1-inch process
connection threads)

Choose one: PN 23166-00, 316 SST, 1 in. x 1 in. NPT process connector, with EPDM O-ring

PN 23166-01, Titanium, 1 in. x 1 in. NPT process connector, with EPDM O-ring

PN 9510066, Nylon, 1 in. x 1 in. NPT process connector (submersion only)

Choose one (optional process connector o-rings)

PN 9550220, Kalrez o-ring, 2-214

PN 9550099, Viton o-ring, 2-214

2. Variopol Cable (required for all first time installations) of Models 396VP and 398VP

Choose one: PN 24281-00, 15 ft cable with mating VP connector

PN 24281-06, 10 ft cable with mating VP connector

3. Mounting Accessories (optional)

Choose one: PN 915240-03 PVC flow through tee, 3/4 in. NPT process connection

PN 915240-04 PVC flow through tee, 1 in. NPT process connection

PN 915240-05 PVC flow through tee, 1 1/2 in. NPT process connection
PN 11275-01 Sensor handrail mounting assembly
PN 2002011 1-1/2 in. CPVC Tee with 1 in. FNPT connection
PN 24091-00 Low Flow Cell

4. Remote Junction Boxes (optional, recommended for sensor to analyzer distances of more
than 15 ft)

Choose one: PN 23555-00 includes preamplifier

5. Extension cables (used with remote junction boxes)

Choose one: PN 23646-01, 11 conductor, shielded, prepped

PN 9200273, 11 conductor, shielded, unprepped

Installation 9

Installation Reference Manual

February 2019 00809-0100-3396

2.2 Unpacking and Inspection

Inspect the outside of the carton for any damage. If damage is detected, contact the carrier
immediately. Inspect the instrument and hardware. Make sure all the items in the packing list are

resent and in good condition. Notify the factory if any part is missing. If the sensor appears to be

p
in satisfactory condition, proceed to Section 2.2, Mounting.

Note: Save the original packing cartons and materials as most carriers require proof of damage due
to mishandling, etc. Also, if it is necessary to return the instrument to the factory, you must pack
the instrument in the same manner as it was received. Refer to Section 6 for return instructions. If
the sensor is to be stored, the vinyl boot should be filled with pH buffer solution and replaced on
sensor tip until ready to use.

WARNING

Glass electrode must be wetted at all times (in storage and in line) to maximize sensor life.

2.3 Mounting

Each sensor has been designed to be located in industrial process environments. Temperature and
pressure limitations must not be exceeded at any time. A caution or warning label regarding this
matter is attached to each sensor. For insertion, transfer the label as shown on label instructions.
See Figure 2-2. For submersion applications, first note limits then remove and discard label.

Note: Before mounting the sensor, shake down the sensor to remove any air bubbles that may be
present at the tip of the pH glass bulb. In most cases, the pH sensor can simply be installed as
shipped and readings with an accuracy of ±0.6 pH may be obtained. To obtain greater accuracy or
to verify proper operation, the sensor must be calibrated as a loop with its compatible analyzer or
transmitter.

2.3.1 Flow Through and Insertion Mounting for Rosemount 396, 396VP, 398,
and 398VP Sensors.

These sensors can be used with a 1 inch MNPT process connector at the front of the sensor for
mounting into a 1-1/2 inch tee or the process. See Figure 2-1 for instal lation configurations.

2.3.2 Submersion Mounting for Rosemount 396, 396VP, 398, and 398VP
Sensors.

These sensors also have a 1 inch MNPT process connector available for use on the back of the sensor.
Tapered pipe threads in plastic fittings tend to loosen after installation. It is therefore recom
mended that Teflon tape be used on the threads and that the tightness of the connection be
checked frequently to assure that no loosening has occurred. To prevent rain water or condensa­tion from running into the sensor, a weatherproof junction box is recommended (see Figure 2-4).
The sensor cable must be run through a protective conduit for isolation from electrical interfer­ence or physical abuse from the process. The sensor should be installed within 80° of vertical, with
the electrode facing down. The sensor’s cable should not be run with power or control wiring.

10 Installation

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00809-0100-3396 February 2019

2.3.2 Quik-Loc Mounting for Rosemount 397

The Quik- Loc mounting is used with the Rosemount 397 sensor only.

WARNING

Once the Quik-Loc unit is installed the operator should wait for the process to cool to a safe temperature, use
the pressure drain valve to relieve all process pressure and observe the pressure on the pressure gauge for
proper removal of the sensor without spray or bodily injury. The Quik-Loc kit used with the Rosemount 397
sensor is not recommended for use with hazardous, corrosive, or strong oxidizing chemicals due to a risk of
spray or bodily injury.

WARNING

It is recommended that a thermometer, drain valve to relieve pressure and pressure gauge be inserted
near the Quik-Loc assembly (see Figure 2-5).

Wrap the pipe threads of the Twin-Kam Kamloc coupler with Teflon tape before placing it into the
process pipe. The coupler can be connected to any 1 in. process connection and must be mounted
within 80° of vertical, with the electrode facing down. Once the coupler is in place, the adapter
should be positioned onto the back end of the sensor. (See Figure 2-5) Remove the parafilm wrap
ping from the two 0-rings on the sensor, grease the o-rings with the lube provided, and feed the
sensor cable through the adapter. Once the adapter is slipped over the sensor’s back end, the
retaining ring (which is included with every Rosemount 397 sensor) should be installed on the black,
grooved, back end of the sensor body. The retaining ring secures the sensor into the adapter. The
adapter/sensor assembly is now ready to be inserted into the coupler. With both arms of the coupler
in the released position, insert the adapter/sensor assembly into the coupler.

Note: The adapter can not be inserted completely or properly unless both arms are in the fully
released position (see Figure 2-5).

Once the adapter has been properly placed in the coupler, both arms should be positioned in the
locked position. A Sur- Loc™ spring arm has been provided on one arm so that the arm cannot
be opened until the spring is released.

Note: The sensor may obstruct flow through smaller pipes.

Once the arms of the coupler have been locked in position, use tamper-evident safety wire on the
metal rings of the Twin-Kam arms to prevent unauthorized and/or untrained personnel from using
the Quik-Loc unit.

WARNING

It is the responsibility of each company using the Quik-Loc Kit/ 397 TUpH Sensor to train personnel of the
injury risks associated with using a quick-release coupler that is placed in a hot or pressurized process.

The Quik-Loc unit should be used only within the pressure and temperature limits stated for the
Rosemount 397 sensor in Section 1.2.

Installation 11

Installation Reference Manual

February 2019 00809-0100-3396

igure 2-1: Recommended Flow Through and Insertion Installation for Rosemount 396,

F
396VP, 398, and 398VP Sensors

1-1/2 inch Pipe Tee (PN 2002011) with 1 inch threaded connections.

Figure 2-2: Recommended Flow-Through and Insertion Installation For Rosemount 397

12 Calibration and Maintenance

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00809-0100-3396 February 2019

Figure 2-3: Dimensional Drawing For Rosemount 396 and 398 Sensors

Calibration and Maintenance 13

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February 2019 00809-0100-3396

Figure 2-4: Rosemount 396VP and 398VP Sensor Dimensional Drawings (Shown with
Process Connector)

Metal Process Connector PN 23166-xx

(xx = 00 for 316 SST and xx = 01 for titanium)

can be used for insertion or submersion
mounting of Rosemount 396VP/398VP

sensors in 1-inch fittings.

14 Installation

The metal process connector gives the sensor
various insertions depths, depending on where
the user locates the compression fitting. Also
thethreads can be switched to face the cable
end of the sensor for connection to submersion
pipes.

Reference Manual Installation

00809-0100-3396 February 2019

Figure 2-5: Submersion Installations for Rosemount 396, 396VP, 398, and 398VP Sensors

Installation 15

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February 2019 00809-0100-3396

igure 2-6: Dimensional Drawings For Rosemount 397 in the Quik-Loc Unit

F

16 Installation

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00809-0100-3396 February 2019

2.4 Electrical Installation

Rosemount 396, 396VP, 397, 398, and 398VP sensors are for use with a remote preamplifier. Each
sensor comes with either a special 15 ft low noise coax cable or a Variopol (VP) connector, which is
used with a mating Variopol cable. The cable should be handled carefully, and kept dry and free of
corrosive chemicals at all times. Extreme care should be used to prevent the cable from being
twisted, damaged or scraped by rough, sharp edges or surfaces.

For additional wiring information on this product, please refer to Wiring Diagrams.

DANGER

DO NOT CONNECT SENSOR CABLE TO POWER LINES. SERIOUS INJURY MAY RESULT.

Note: Remove electrical tape or shrink sleeve from gray reference wire before connecting wire to

terminal.

Figure 2-7: Wiring for Rosemount 396/397/398 to Rosemount 5081-P

Installation 17

Installation Reference Manual

February 2019 00809-0100-3396

Figure 2-8: Wiring for Rosemount 396-54, 397-54, and 398-54 (Pt-100 RTD). For Use With
Junction Box (PN 23555-00) and Remote Preamplifier.

18 Installation

Reference Manual Installation

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igure 2-9: Wiring for Rosemount 396, 397, and 398. For Use With Model 1181 pH.

F

Installation 19

Installation Reference Manual

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Figure 2-10: Wiring for Rosemount 396-54 , 397-54, and 398-54. For Use With Rosemount 54,

4e, 81, 3081, 4081, and 5081.

5

20 Installation

Reference Manual Installation

00809-0100-3396 February 2019

igure 2-11: Wiring for Rosemount 396VP and 398VP to Rosemount 3081, 4081, and 5081

F
through a Remote Junction Box.

Installation 21

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Figure 2-12: Rosemount 396-54-62-xx Wiring to Rosemount 1056/1057/56 Transmitters

Figure 2-13: Rosemount 396-54-62-xx Wiring to Rosemount 1066 Transmitter

22 Installation

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Figure 2-14: Rosemount 396-54-62-xx Wiring to Rosemount 5081 Transmitter

Figure 2-15: Rosemount 396VP Wiring for Rosemount 1056/56 Transmitters

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Figure 2-16: Rosemount 396VP Wiring for Rosemount 1066 Transmitter

Figure 2-17: Rosemount 396VP Wiring for Rosemount 1057 Transmitter

24 Installation

Reference Manual Installation

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igure 2-18: Rosemount 396VP Wiring for Rosemount 5081 Transmitter

F

Figure 2-19: Rosemount 396VP-70 Wiring for Rosemount 1066 Transmitter

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Figure 2-20: Rosemount 396VP-70 Wiring for Rosemount 1056/1057/56 Transmitters

Figure 2-21: Rosemount 397-02-10-54-xx Wiring to Rosemount 1056/1057/56 Transmitter

26 Installation

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Figure 2-22: Rosemount 397-02-10-54-xx Wiring to Rosemount 1066 Transmitter

Figure 2-23: Rosemount 397-02-10-54-xx Wiring to Rosemount 5081 Transmitter

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Figure 2-24: Rosemount 398-xx-xx-xx-62 Wiring to Rosemount 1056/1057/56 Transmitters

Figure 2-25: Rosemount 398-xx-xx-xx-62 Wiring to Rosemount 1066 Transmitter

28 Installation

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Figure 2-26: Rosemount 398-xx-xx-xx-62 Wiring to Rosemount 5081 Transmitter

Figure 2-27: Rosemount 398VP Wiring to Rosemount 1056/56 Transmitters

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Figure 2-28: Rosemount 398VP Wiring to Rosemount 1057 Transmitter

Figure 2-29: Rosemount 398VP Wiring to Rosemount 5081 Transmitter

30 Installation

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Figure 2-30: Rosemount 398VP Wiring to Rosemount 1066 Transmitter

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32 Installation

Reference Manual Startup and Calibration

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Section 3: Startup and Calibration

3.1 Sensor Preparation

Shake down the sensor to remove any air bubbles that may be present at the tip of the pH glass
bulb. In most cases, the pH sensor can simply be installed as shipped and readings with an accuracy
of ±0.6 pH may be obtained. To obtain greater accuracy or to verify proper operation, the sensor
must be calibrated as a loop with its compatible analyzer or transmitter.

3.2 Calibration Using Buffer Solution or Grab Sample

The pH sensor-transmitter loop may be calibrated by submersing the sensor in a buffer solution
(standard solutions of known pH values) or in a process grab sample whose pH value maybe
checked by a calibrated laboratory or portable pH meter.

Please refer to the transmitter Reference Manual for proper calibration procedures.

Startup and Calibration 33

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34 Startup and Calibration

Reference Manual Maintenance

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Section 4: Maintenance

Rosemount 396, 396VP, 397, 398, and 398VP sensors are disposable type sensors and therefore
require minimum maintenance. Every sensor should be kept clean and free of debris and sediment

t all times. The frequency of cleaning by wiping or brushing with a soft cloth or brush is

a
determined by the nature of the solution being measured. The sensor should be removed from

the process periodically and checked in buffer solutions.

DANGER

SENSOR IS IN PRESSURIZED SYSTEM! May cause spray and bodily injury. Before removing sensor, be
absolutely certain that the process pressure is reduced to 0 psig and the process temperature is lowered to
a safe level.

If the sensor will not calibrate, refer to your transmitter Reference Manual for proper test
procedures. If it is determined that the sensor has failed, it should be discarded and replaced.

4.1 Electrode Cleaning

If the electrode is coated or dirty, clean as follows:

1. Remove the sensor from process.

2. Wipe the glass bulb with a soft, clean, lint free cloth or tissue. If this does not remove the
dirt or coating, go to Step 3. (Detergents clean oil and grease; acids remove scale.)

3. Wash the glass bulb in a strong detergent solution and rinse it in clean water. If this does
not clean the glass bulb, go to Step 4.

CAUTION

The solution used during the following check 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.

4. Wash the glass bulb in a dilute 5% hydro chloric acid solution and rinse with clean water.
Soaking the sensor overnight in the acid solution can improve cleaning action.

NOTICE

Erroneous pH results may occur immediately after acid soak, due to reference junction potential build-up.
Replace the sensor if cleaning does not restore sensor operation.

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4.2 Automatic Temperature Compensator

The temperature compensator element is temp erature sensitive and can be checked with an
ohmmeter. Resistance increases with temperature.

The 3K element will read 3000 ohms ±1% at 25°C (77°F) and a Pt-100 will read 110 ohms. Resist­ance varies with temperature for a 3K and Pt-100 element and can be determined according to
Table 4- 2 or the following formula:

RT=R0[l+R1(T-20)]

Where RT= Resistance

T = Temperature in °C

Refer to Table 4-1 for R0and R1values

Table 4-1: R0and R1Values for Temperature Compensation Elements

Temperature Element R

3K 2934 0.0045

PT-100 107.7 0.00385

0

R

1

Table 4-2: Temperature vs Resistance of Automatic Temperature Compensator Elements

Temperature °C Resistance (Ohms) ±1

3K PT-100

0 2670 100.0

10 2802 103.8

20 2934 107.7

25 3000 109.6

30 3066 111.5

40 3198 115.4

50 3330 119.2

60 3462 123.1

70 3594 126.9

80 3726 130.8

90 3858 134.6

100 3990 138.5

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Reference Manual Troubleshooting

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Section 5: Troubleshooting

able 5-1: Troubleshooting

T

Trouble Probable Cause Remedy

Meter reads off scale. (Display
reads overrange.)

Display reads between 3 and 6
pH regardless of actual pH of
solution or sample.

Meter or display indication
swings or jumps widely in
AUTO T.C. Mode.

Span between buffers
extremely short in AUTO T.C.
Mode.

Sluggish or slow meter
indication for real changes in
pH level.

T.C. element shorted. Check T.C. element as instructed in Section 4.2

and replace sensor if defective.

Sensor not in process or sample stream is low. Make sure sensor is in process with sufficient

sample stream (refer to Section 2.0 for
installation details).

Open glass electrode. Replace sensor.

Reference element open - no contact. Replace sensor.

Electrode cracked. Replace sensor.

T.C. element shorted. Check T.C. element as instructed in Section 4.2

and replace sensor if defective.

T.C. element open. Check T.C. element as instructed in Section 4.2

and replace sensor if defective.

Electrode coated. Clean sensor as instructed in Sections 4.1

Replace sensor if cracked.

Electrode at end of life. Replace sensor.

Transmitter cannot be
standardized.

Transmitter short spans
between two different buffer
values.

Electrode coated or cracked. Clean sensor as instructed in Sections 4.1

Replace sensor if cracked.

Electrode at end of life, due to old glass or high
temperature exposure.

Coated glass. Clean sensor as instructed in Sections 4.1

Replace sensor.

Replace sensor if cracked.

Note: For any repair or warranty inquiries please contact our Customer Care group.

Troubleshooting 37

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38 Troubleshooting

Reference Manual Accessories

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Section 6: Accessories

6.1 Accessories

Table 6-1: Additional Accessories for Rosemount 396/396VP/398/398VP Sensors

Part Number Description

33046-00 Ferrule 1 in., split 316 SS

33211-00 Adapter retrofit for PN 915240-04

9310100 Ferrule, 1 in. Teflon

9310096 Nut, Swage, 1 in. stainless steel

Table 6-2: Additional Accessories for Rosemount 397 Sensor

Part Number Description

23753-00 PEEK replacement adapter for Quik-Loc kit (PN 23757-01)

23753-01 PEEK replacement adapter for Quik-Loc kit (PN 23757-00)

9160441 1 in. MNPT 316 stainless steel coupler

9160447 1 in. EP Gasket for coupler

2002011 1-1/2 in. CPVC Tee with 1 in. FNPT Connection

Table 6-3: Other Accessories

Part Number Description

9210012 Buffer solution, 4.01 pH, 16 oz.

9210013 Buffer solution, 6.86 pH, 16 oz.

9210014 Buffer solution, 9.18 pH, 16 oz.

2001492 Stainless Steel Tag, Specify Marking

Accessories 39

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40 Accessories

Reference Manual EC Declaration of Conformity

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EC Declaration of Conformity

ote: Please see websitefor most recent Declaration.

N

EC Declaration of Conformity 41

EC Declaration of Conformity Reference Manual

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42 EC Declaration of Conformity

Reference Manual EC Declaration of Conformity

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EC Declaration of Conformity 43

China RoHS Tables Reference Manual

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44 China RoHS Table

Reference Manual China RoHS Tables

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China RoHS Tables 45

China RoHS Tables Reference Manual

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China RoHS Tables 46

ANY FM APPROVED

ASSOCIATED APPARATUS

HAVING ENTITY PARAMETERS

NO

N-

H

AZARDOUS

(UNCLASSIFIED)

AREA

CLASS I, II, III, DIVISIO N 1, GROUPS A-G

T6 Ta = 60C

SENSOR

ENTITY PARAMETERS

Ui = 13.1U, Ii = 358mA

Pi = 698 m W

Ci = 0.967 F, Li = 0.1mH

1. NO REVISION TO THIS DRAW ING IS PERMITTED W ITHO UT

FM APPROVAL.

2. U

m ax

> U

t

; I

m ax

> I

t

; (C

i

OF ALL LOO PS + C CABLE) < C

a

;

(L

i

OF ALL LOOPS + L CABLE) < L

a

, P

m ax

OR P

i

> P

0.

3. SINGLE M ULTI-CHANNEL

IS BARRIER OR APPARATUS M UST BE FM APPROVED,

4. SINGLE M ULTI-CHANNEL

IS BARRIER OR APPARATUS M ANUFACTURE’S

CONTROL DRAW INGS M UST BE FOLLO W ED W HEN INSTALLING THE SYSTEM .

IS BARRIER OR EQUIPM ENT M AY BE INSTALLED W ITHIN THE HAZARDOUS

(CLASSIFIED) LOCATIO N FOR W HICH IT IS APPROVED

.

5. INSTALLATIO N M UST BE IN ACCORDANCE W ITH ARTICL

E 500 OF THE NEC

(ANSI/NFPA 70) AND ANSI/ISA RP 12.6.

W ARNING: SUBSTITUTION OF COM PONENTS M AY IM PA

IR INTRINSIC SAFETY.

6. pH & AM PEROM ETRIC SENSORS W ITHOUT PREAMPS ARE SIM PLE APPARATUS.

ZON E

ZONE 0

7. CONTROL EQUIPM ENT CONNECTED TO THE ASSOCIATED APPARATUS M UST

NOT USE OR GENERATE M ORE THAN 250V.

RESISTANCE BETW EEN INTRINSICALLY SAFE GROUND AND EARTH GROUND

M UST BE LESS THAN O R EQUAL TO 1 O HM .

ANY

FM APPROVED TRANSMITTER FOR

DIVISION 1 W ITH INTRINSICALLY SAFE

OUTPUT PARAMETERS. THIS

FM

APPROVED DEVICE M UST BE INSTALLED

PER ITS INSTALLATION DRAWING.

FM

APPROVED EQUIPM ENT (M AY BE

M ULTIPLE DEVICES, NUMBER IS LIM ITED

BY REQUIREMENTS TO M EET ALL OTHER

IS REQUIREMENTS FOR THE NETWORK)

W ITH EQUIVALENT HAZARDOUS AREA

APPROVALS.

H

AZARDOUS

(CLASSI

F

IED)

AREA

INTRISICALLY SA FE

9. pH/ORP SENSOR M O DELS THAT M AY CONTAIN THE PREAM PLIFIER:

3900/VP

3500/VP

3300HT/VP

3400HT/VP

396/VP

396R/VP

396P/VP

398R/VP

399/VP

389/VP

385/385+

10. W ARNING: TO PREVENT IGNITIO N O F FLAM M ABLE OR COM BUSTIBLE

ATMOSPHERES, DISCONNECT POW ER BEFORE SERVIC

ING.

11. THE ENTITY CONCEPT ALLOW S INTECONNECTION OF INTRINSICALLY SAFE

APPARATUS W ITH ASSOCIATED APPARATUS W HEN THE FOLLOW ING IS TRUE:

U

i

> U

o;

I

i

> I

o;

P

i

> P

o;

C

o

> C

i

+ C CABLE; L

o

> L

i

+ L CABLE.

12. COPY REVISIONS TO 1400332 TO pH/ORP SHIPPING M ANUALS.

13 Ci INCLUDES THE CAPACITANCE OF 500 FEET OF SENSOR CABLE.

13

DW G NO.

1400332

8.

Reference Manual FM Installation

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Intrisicallly Safe Sensor Installation Drawing - FM

FM Installation 47

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Rev. AA

February 2019

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been made to ensure their accuracy, they are not to be construed as warranties or guarantees,
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