Rosemount 4081 Two-Wire Conductivity Transmitter Owner's manual

Brand: Rosemount

Model: 4081 Two-Wire Conductivity Transmitter

Type: Owner's manual

Model 4081C

Remote Controlled FOUNDATION

™

Fieldbus

Two-Wire Conductivity Transmitter

Instruction Manual

PN 51-4081C/rev.C

June 2002



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 1-800-654-

7768 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

Rosemount Analytical Inc.

2400 Barranca Parkway

Irvine, CA 92606 USA

Tel: (949) 757-8500

Fax: (949) 474-7250

http://www.RAuniloc.com

TABLE OF CONTENTS

Section Title Page

1.0 INSTALLATION................................................................................................................. 1-1

1.1 Overview .................................................................................................................. 1-1

1.2 Mechanical Installation............................................................................................. 1-2

1.3 Electrical Installation ................................................................................................ 1-4

2.0 OPERATION OVERVIEW ................................................................................................. 2-1

2.1 General .................................................................................................................... 2-1

2.2 Display ..................................................................................................................... 2-1

2.3 Infrared Remote Control (IRC)................................................................................. 2-2

2.4 Diagnostic Messages............................................................................................... 2-2

2.5 Menu Program Tree ................................................................................................. 2-3

3.0 FACTORY PROGRAMMED SETTINGS ........................................................................... 3-1

4.0 TRANSMITTER PROGRAM SET-UP ............................................................................... 4-1

4.1 Program Menu ......................................................................................................... 4-1

4.2 Temperature Parameters ......................................................................................... 4-2

4.3 Display Units ............................................................................................................ 4-3

5.0 START-UP AND CALIBRATION....................................................................................... 5-1

5.1 Accessing The Calibrate Menu ................................................................................ 5-1

5.2 Calibrate Menu ........................................................................................................ 5-2

5.3 Calibrate Menu (Contacting) .................................................................................... 5-3

5.4 Branch Calibration Initial Start-Up............................................................................ 5-4

5.5 Calibrate Menu (Low Conductivity/Resistivity)......................................................... 5-5

5.6 On-line Calibration ................................................................................................... 5-6

6.0 DIAGNOSIS AND TROUBLESHOOTING ........................................................................ 6-1

6.1 Overview .................................................................................................................. 6-1

6.2 Fault Conditions ....................................................................................................... 6-3

6.3 Diagnostic Messages............................................................................................... 6-4

6.4 Quick Troubleshooting Guide................................................................................... 6-5

6.5 Systematic Troubleshooting..................................................................................... 6-6

6.6 RTD Resistance Values ........................................................................................... 6-7

7.0 MAINTENANCE ................................................................................................................ 7-1

7.1 Overview .................................................................................................................. 7-1

7.2 Preventative Maintenance ....................................................................................... 7-1

7.3 Corrective Maintenance ........................................................................................... 7-1

8.0 PRODUCT DATA............................................................................................................... 8-1

8.1 Features................................................................................................................... 8-1

8.2 Specifications........................................................................................................... 8-2

8.3 Transmitter Display .................................................................................................. 8-3

8.4 Infrared Remote Control Functions.......................................................................... 8-3

8.5 Ordering Information ................................................................................................ 8-4

9.0 OPERATION WITH REMOTE CONTROLLER ................................................................. 9-1

10.0 RETURN OF MATERIALS ................................................................................................ 10-1

MODELS 4081C TABLE OF CONTENTS

MODEL 4081C

MICROPROCESSOR ANALYZERS

LIST OF FIGURES

Figure No. Title Page

1-1 Exploded Drawing of Circuit Board Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1-2 Dimensional Information - Model 4081C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-3 Mounting Information - Model 4081C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1-4 Contacting Conductivity Sensor Wiring to Model 4081C Transmitter . . . . . . . . . . . . 1-6

1-5 Sensor Wiring with Pre-existing Conductivity Sensors . . . . . . . . . . . . . . . . . . . . . . . 1-7

1-6 Model 4081C Terminal Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1-7 Typical Fieldbus Network Electrical Wiring Configuration . . . . . . . . . . . . . . . . . . . . . 1-8

1-8 FM Explosion Proof Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1-9 CSA Intrinsically Safe Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1-10 FMRC Intrinsically Safe Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

2-1 Process Display Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-2 Program Mode Display Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-3 Infrared Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-4 Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

4-1 Program Menu and Menu Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4-2 RTD Sensor Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4-3 Security Code Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

5-1 Calibration Menu Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

6-1 Diagnose Menu Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6-2 Diagnose Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6-3 Disabling Fault Annunciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6-4 Non-disabling Warning Annunciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6-5 Troubleshooting Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

7-1 Hold Annunciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7-2 Exploded View of Model 4081C Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

8-1 Transmitter Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8-2 Infrared Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8-3 Functional Block Diagram for Model 4081C Transmitter with F

OUNDATION Fieldbus . 8-3

9-1 Functional Block Diagram for Model 4081C Transmitter with FOUNDATION Fieldbus . 9-1

LIST OF TABLES

Table No. Title Page

1-1 Measurement Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-2 Transmitter Range Limits (Ultra Pure) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-3 Transmitter Range Limits (Resistivity) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1-4 Transmitter Range Limits (Conductivity) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

3-1 Program Variables with Factory Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

4-1 Transmitter Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4-2 Program Menu Mnemonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

5-1 Calibrate Menu Mnemonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

6-1 Diagnostics Variables Mnemonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6-2 Diagnostic Fault Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6-3 Quick Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

6-4 RTD Resistance Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6-5 Conductivity Determination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

7-1 Replacement Parts for Model 4081C Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

LIST OF APPENDICES

Section Title Page

A Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

B 4081C Resource and Transducer Block Parameters. . . . . . . . . . . . . . . . . . . . . . . . . B-1

MODELS 4081C TABLE OF CONTENTS

MODELS 4081C SECTION 1.0

INSTALLATION

SECTION 1.0

INSTALLATION

FIGURE 1-1. Model 4081C Transmitter - Exploded Drawing of Circuit Board Stack

1.1 OVERVIEW

This conductivity transmitter has been designed for

easy installation and shipment. The purpose of this

section is to provide information on the electrical con-

figurations and the physical mountings available. Prior

to discarding the packing case:

If it is damaged, the transmitter may have also

sustained damage. Contact the carrier at once.

Remove all items shown on the packing list and

note any exceptions.

1-1

The Model 4081C conductivity transmitter is designed

to make accurate measurements while the sensor is

submersed in the process stream. Measurements can

also be tailored to high temperature and/or high pres-

sure streams. The specific ranges covered are con-

trolled by both hardware and software.

1-2

FIGURE 1-2. Dimensional Information – Model 4081C

DWG. NO. REV.

44081C01 A

MILLIMETER

INCH

MODELS 4081C SECTION 1.0

INSTALLATION

1.2 MECHANICAL INSTALLATION

The Model 4081C Transmitter is suitable for installation in

harsh environments.

• For best operation, locate in an area where tempera-

ture extremes, vibrations, electromagnetic, and radio

frequency interferences are minimized or absent.

The transmitter is equipped with two 3/4 in. FNPT conduit

openings, one on each side of the transmitter housing.

• Remove the terminal end cap.

• With the transmitter positioned with the wiring terminal

side of the enclosure opened (as seen in Figure 1-2),

use the left conduit opening to bring in the sensor

wiring, and the right side conduit opening for power

supply/current loop wiring.

• To prevent moisture from entering the transmitter

housing, use weathertight cable glands supplied by

others.

NOTE

Moisture accumulation in the transmitter

housing can affect transmitter performance

and may void its warranty.

• If conduit is used, connections on the transmitter hous-

ing should be plugged and sealed (with tape, pipe com-

pound, or sealant) to prevent moisture accumulation in

the terminal side of the housing.

• The transmitter must be installed so that the conduit

openings are not on the top, because moisture can

accumulate in that position.

• The transmitter should be easily accessed by operating

and maintenance personnel.

1.2.1 Flat Surface Mounting. The transmitter may be

mounted on a flat surface (see Figure 1-2) using the thread-

ed mounting holes on the bottom of the transmitter.

1.2.2 Pipe Mounting Bracket. An optional pipe mounting

bracket is available. See Figure 1-3 for mounting information.

1-3

MODELS 4081C SECTION 1.0

INSTALLATION

FIGURE 1-3. Mounting Information - Model 4081C

DWG. NO. REV.

40408103 B

DWG. NO. REV.

40408104 F

MILLIMETER

INCH

1-4

MODELS 4081C SECTION 1.0

INSTALLATION

1.3 ELECTRICAL INSTALLATION

1.3.1 Conductivity Sensors

All Rosemount Analytical Inc.’s contacting conductivity

sensors with Pt100 RTD or Pt1000 RTD are compatible

with the Model 4081C transmitter.

NOTE

Optimum EMI/RFI immunity may be achieved on

sensors whose interconnecting cable has an outer

braided shield by utilizing a cable gland fitting that

provides for continuity between the braided shield

and the transmitter enclosure. An equivalent con-

duit connector may also be used if the sensor

cable is to be enclosed in conduit.

1.3.2 Contacting Loops.

The Model 4081C conductivity transmitter is designed to

make accurate measurements while in contact with the

process stream. Measurements can also be tailored to high

temperature and/or high pressure streams. The following

table shows the measurement ranges and linearity avail-

able for each range and cell constant.

TABLE 1-1. Measurement Ranges (

s/cm)

TABLE 1-2. Transmitter Range Limits (Ultra Pure [PV_HIGH_LOW_RANGE = Low])

CELL CONSTANT 0.01 0.10 1.0

Low Range 0-20 0-200 0-2,000

(linearity: ± 1.0%)

High Range 0-200 0-2,000 0-20,000

(linearity: ± 5.0%)

Wire Terminal

Connection

(11) or (12)

*NOTE: Values shown are the 25°C conductivity with a tem-

perature slope of 2% per degree C. The maximum

range value will be higher for solutions with a lower

temperature slope, and lower for solutions with a

higher temperature slope.

NOTE: Connect grey (or black) wire of sensor to TB-11 for

high conductivity ranges or to TB-12 for low con-

ductivity ranges.

MANUAL_AUTO_RANGE RANGE_VALUE CELL_CONSTANT (0% FS) (100% FS)

Manrng (1/cm) EU0%

S/cm EU100%

S/cm

Auto N/A 0.01 0 20

Auto N/A 0.1 0 200

Auto N/A 1.0 0 2,000

Manual 1 0.01 0 0.0975

Manual 1 0.1 0 0.975

Manual 1 1.0 0 9.75

Manual 2 0.01 0 0.64

Manual 2 0.1 0 6.4

Manual 2 1.0 0 64

Manual 3 0.01 0 4.05

Manual 3 0.1 0 40.5

Manual 3 1.0 0 405

Manual 4 0.01 0 20

Manual 4 0.1 0 200

Manual 4 1.0 0 2,000

MODELS 4081C SECTION 1.0

INSTALLATION

1-5

TABLE 1-3. Transmitter Range Limits (Resistivity [PV_HIGH_LOW_RANGE = Low])

MANUAL_AUTO_RANGE RANGE_VALUE CELL_CONSTANT (0% FS) (100% FS)

Manrng (1/cm) EU0% (M

Ω

-cm) EU100% (M

Ω

-cm)

Auto N/A 0.01 0.05 50

Auto N/A 0.1 0.005 50

Auto N/A 1.0 0.0005 50

Manual 1 0.01 10.3 50

Manual 1 0.1 1.03 50

Manual 1 1.0 0.103 50

Manual 2 0.01 1.56 50

Manual 2 0.1 0.156 50

Manual 2 1.0 0.0156 50

Manual 3 0.01 0.247 50

Manual 3 0.1 0.0247 50

Manual 3 1.0 0.00247 50

Manual 4 0.01 0.05 50

Manual 4 0.1 0.005 50

Manual 4 1.0 0.0005 50

TABLE 1-4. Transmitter Range Limits (Linear Conductivity)

PV_HIGH_LOW_RANGE MANUAL_AUTO_RANGE RANGE_VALUE CELL_CONSTANT (0% FS) (100% FS)

Manrng

(1/cm) EU0%

S/cm EU100%

S/cm

Low Auto N/A 0.01 0 20

Low Auto N/A 0.1 0 200

Low Auto N/A 1.0 0 2,000

High Auto N/A 0.01 0 200

High Auto N/A 0.1 0 2,000

High Auto N/A 1.0 0 20,000

Low Manual 1 0.01 0 0.0975

Low Manual 1 0.1 0 0.975

Low Manual 1 1.0 0 9.75

Low Manual 2 0.01 0 0.64

Low Manual 2 0.1 0 6.40

Low Manual 2 1.0 0 64

Low Manual 3 0.01 0 4.05

Low Manual 3 0.1 0 40.5

Low Manual 3 1.0 0 405

Low Manual 4 0.01 0 20

Low Manual 4 0.1 0 200

Low Manual 4 1.0 0 2,000

High Manual 1 0.01 0 8

High Manual 1 0.1 0 80

High Manual 1 1.0 0 800

High Manual 2 0.01 0 52

High Manual 2 0.1 0 520

High Manual 2 1.0 0 5,200

High Manual 3 0.01 0 200

High Manual 3 0.1 0 2,000

High Manual 3 1.0 0 20,000

1-6

MODELS 4081C SECTION 1.0

INSTALLATION

Note: Connect grey wire of sensor to TB-11 for high conductivity ranges or to TB-12 for low conductivity ranges. See

Table 1-2 for range selection.

FIGURE 1-4. Contacting Conductivity Sensor to Model 4081C Transmitter

1-7

MODELS 4081C SECTION 1.0

INSTALLATION

FIGURE 1-5. Sensor Wiring with Pre-existing Conductivity Sensors

1-8

MODELS 4081C SECTION 1.0

INSTALLATION

FIGURE 1-6. MODEL 4081C TERMINAL BLOCKS

MODEL 4081C

FIGURE 1-7. TYPICAL FIELDBUS NETWORK ELECTRICAL WIRING CONFIGURATION

MODELS 4081C SECTION 1.0

INSTALLATION

LABEL, I.S. N.I. & EX CSA APPROVED FOR MODEL 4081C

1-9

1.3.3 Hazardous Area Installation

In order to maintain the hazardous area rating for installed transmitter, the following drawings must be used:

Figure 1-8. Wiring for FM Explosion-Proof Installation for Model 4081C (Drawing Number 1400175)

Figure 1-9. Wiring for CSA Intrinsic Safety for Model 4081C (Drawing Number 1400189). See also label below.

Figure 1-10. Wiring for FMRC Instrinsically Safe Installation for Model 4081C (Drawing Number 1400186).

1-10

MODELS 4081C SECTION 1.0

INSTALLATION

FIGURE 1-8. EXPLOSION-PROOF INSTALLATION

MODELS 4081C SECTION 1.0

INSTALLATION

FIGURE 1-9. CSA INTRINSICALLY SAFE INSTALLATION (1 of 2)

1-11

1-12

MODELS 4081C SECTION 1.0

INSTALLATION

FIGURE 1-9. CSA INTRINSICALLY SAFE INSTALLATION (2 of 2)

MODELS 4081C SECTION 1.0

INSTALLATION

FIGURE 1-10. FMRC INTRINSICALLY SAFE INSTALLATION (1 of 2)

1-13

1-14

MODELS 4081C SECTION 1.0

INSTALLATION

FIGURE 1-10. FMRC INTRINSICALLY SAFE INSTALLATION (2 of 2)

2-1

2.1 GENERAL

The Model 4081C transmitter operates in either the

Process or Program modes. The process mode screen

is illustrated in Figure 2-1 and the program mode screen

is illustrated in Figure 2-2.

2.2 DISPLAY

2.2.1 Process Mode (normal operating mode). When

operating in this mode:

• The primary process variable (the conductivity) is

continuously displayed (see 1 in Figure 2-1)

• Engineering units are determined by the process

display mode

• Temperature output is in °F or °C (see 2 in Figure 2-1)

2.2.2 Program Mode (programming or calibrating

mode — step-by-step instructions for programming

and calibrating the transmitter are given in Sections

4.0 and 5.0, respectively). When operating in this mode

the following information is provided on the instrument

display:

• Continuous display of the primary process variable

is still available.

• Menus are displayed below the process variable.

The active subset title is in bold print (see 1 in

Figure 2-2).

CALIBRATE PROGRAM DIAGNOSE

CALIbrAtE

EXIT NEXT ENTER

1000

mS/cm

MODELS 4081C SECTION 2.0

OPERATION OVERVIEW

SECTION 2.0

OPERATION OVERVIEW

FIGURE 2-1. Process Display Screen

11000000

mS/cm

25.0C

FIGURE 2-2. Program Mode Display Areas

• Security ID (see Section 4.3, step 10) and prompts

are displayed below the segments (see 2 and 3 in

Figure 2-2).

• FAULT is displayed (see 4 in Figure 2-2) when a

transmitter disabling condition occurs. When in the

fault mode, the fault indicator lights up and the

process variable flashes. The program mode must

be entered to see the descriptive fault message.

• HOLD (see 5 in Figure 2-2) becomes visible when-

ever the transmitter is placed in the hold, test, or

multidrop function. Hold is most often used when

servicing/cleaning the sensor.

2-2

2.3 INFRARED REMOTE CONTROL (IRC)

The IRC is the most convenient way to calibrate, pro-

gram, or access the diagnostics in the transmitter. It

operates the same as other remote controllers.

For best operation, the IRC should be within ten feet of

the transmitter and aimed directly at the infrared sensor

window (small square window at top of display) at an

angle of no more than fifteen degrees. The amount of

ambient light may also affect IRC communication.

2.3.1. The overall menu structure is shown in Figure 2-4.

The top level functions available to the IRC (CAL,

PROG, and DIAG) are shown on the display with the

active menu segment highlighted as described in

Section 2.2.

2.3.2. Menu Keys. The three primary menu structures

are Calibrate (CAL), Program (PROG), and Diagnose

(DIAG). They are shown horizontally on the screen and

have separate keys on the IRC (see 1, 2, and 3 in Figure

2-3). Pressing the labeled key will provide access to that

menu.

2.3.3. Program Command Keys. The three program

command keys are labeled ENTER, NEXT, and EXIT

(see 4, 5, and 6 in Figure 2-3). These keys are used as

follows:

ENTER: This advances down through the sub-

menus to the prompts, will save the new value,

and activate NEXT.

NEXT: This advances the program to the next

sub-menu.

EXIT: This key is used to abort the current sub-

menu operation and return to the previous

menu segment.

2.3.4. Editing Keys. These keys are used to edit input

variables (see Figure 2-3). The left/right arrows change

the location of the prompt and causes the integer to

flash. These also allow access to the measurement unit

and decimal place location. When a flashing mnemonic

appears on the display, the UP and DOWN arrow keys

scroll up or down through the list. When numbers are

shown, the UP and DOWN keys change the value of

the digit.

MODELS 4081C SECTION 2.0

OPERATION OVERVIEW

Editing

keys

FIGURE 2-3. Infrared Remote Control

2.3.5. Special Entry Keys. These keys provide system

level operations.

RESET: Aborts the current operation and

returns to the process display screen (see 8 in

Figure 2-3).

HOLD: Accesses prompt to toggle between

enable and disabling of this function (see 9 in

Figure 2-3).

2.4 DIAGNOSTIC MESSAGES

Whenever a warning or fault has been triggered, diag-

nostic messages are displayed to aid in problem solv-

ing. These messages flash alternately with the

temperature reading.

If more than one message has been generated, the

warning or fault messages will alternate with the regular

readings.

See Section 6.0 Diagnosis and Troubleshooting for

message meaning and possible causes.

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Rosemount 4081 Two-Wire Conductivity Transmitter Owner's manual

Rosemount 4081 Two-Wire Conductivity Transmitter Owner's manual

Rosemount 4081 Two-Wire Conductivity Transmitter Owner's manual

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