Rosemount 3081-T Two-Wire Conductivity Transmitter Owner's manual

Models 3081 T and 81 T

Remote Controlled HART

®

SMART

®

Two-Wire Conductivity Transmitters

Instruction Manual

PN 51-3081/81T/rev.C

April 2003

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.

CAUTION

If a Model 275 Universal Hart

®

Communicator is used

with these transmitters, the software within the Model

275 may require modification.

If a software modification is required, please contact

your local Fisher-Rosemount Service Group or

National Response Center at 1-800-654-7768.

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 Pre-Installation Set-Up............................................................................................. 1-2

1.3 Mechanical Installation (3081T) ............................................................................... 1-3

1.4 Mechanical Installation (81T) ................................................................................... 1-3

1.5 Electrical Installation ................................................................................................ 1-8

1.6 Installation Verification ............................................................................................. 1-8

1.7 Hazardous Locations ............................................................................................... 1-8

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

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

2.2 Displays ................................................................................................................... 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

3.1 General .................................................................................................................... 3-1

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

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

4.2 Output Programming................................................................................................ 4-2

4.3 Temperature Parameters......................................................................................... 4-3

4.4 Display Units/Security .............................................................................................. 4-4

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

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

5.2 Calibrate Menu (Toroidal) ........................................................................................ 5-2

5.3 Calibrate Menu (% Concentration)........................................................................... 5-3

5.4 On-line Calibration ................................................................................................... 5-4

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 SPECIFICATIONS.......................................................................................... 8-1

9.0 REMOTE COMMUNICATIONS......................................................................................... 9-1

9-1 Hart Communication ................................................................................................ 9-1

9-2 AMS Communication ............................................................................................... 9-1

i

MODELS 3081T/81T TABLE OF CONTENTS

MODEL 3081T / 81T

MICROPROCESSOR TRANSMITTERS

ii

LIST OF FIGURES

Figure No. Title Page

1-1 Component Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1-2 CPU PCB Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-3 Dimensional Information - Model 3081T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-4 Mounting Information - Model 3081T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1-5 Exploded View of Mounting Dimensions - Model 81T . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1-6 Exploded View of Mounting - Model 81T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1-7 Function Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1-8 Model 3081/81T Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1-9 Model 3081/81T Sensor J-Box Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1-10 Model 3081/81T Terminal Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1-11 Intrinsically Safe BASEEFA Model 3081T Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

1-12 Intrinsically Safe BASEEFA Model 81T Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

1-13 FMRC Intrinsically Safe Installation for Model 3081T . . . . . . . . . . . . . . . . . . . . . . . 1-14

1-14 FMRC Intrinsically Safe Installation for Model 81T . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

1-15 CSA Intrinsically Safe Installation for Model 3081T . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1-16 CSA Intrinsically Safe Installation for Model 81T . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

1-17 FM Explosion-Proof Installation for Model 3081T . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

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 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4-3 Security Code Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

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

5-2 Calibration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

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

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

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

6-4 Warning Annunciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

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

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

7-2 Exploded View - 3081T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7-3 Exploded View - 81T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

8-1 Transmitter Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8-2 Infrared Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8-3 HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

9-1 HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9-2 HART Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

9-3 AMS Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

MODELS 3081T/81T TABLE OF CONTENTS

iii

LIST OF TABLES

Table No. Title Page

1-1 Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1-2 Hardware/Software Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

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

4-1 Program Menu Mnemonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

5-1 Nominal Cell Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5-2 Calibrate Menu Mnemonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

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 3081 T Replacement Parts and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7-2 81 T Replacement Parts and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

8-1 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

LIST OF APPENDICES

Appendix Title Page

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

MODELS 3081T/81T APPENDIX

MODELS 3081T/81T SECTION 1.0

INSTALLATION

SECTION 1.0

INSTALLATION

FIGURE 1-1. Component Assembly

1.1 OVERVIEW

This inductive conductivity transmitter has been

designed for easy installation and shipment. The pur-

pose of this section is to provide information on the elec-

trical configurations and the physical mountings

available. Prior to discarding the packing case:

If it is damaged, the transmitter may have also sus-

tained damage. Contact the carrier at once.

Remove all items shown on the packing list and

note any exceptions.

Model 3081T

Model 81T

DWG. NO. REV.

4008114 C

DWG. NO. REV.

40308113 E

1-1

The Model 3081T and 81T conductivity transmitters are

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 pressure streams. The specific ranges cov-

ered are controlled by both hardware and software.

1-2

1.2 PRE-INSTALLATION SET-UP

1.2.1 Accessing the Stack (Model 3081T). The Model

3081 T electronics are contained on three boards

(PCB’s), as shown in Figure 1-1. The Analog board is on

the bottom, the Central Processing Unit (CPU) board is

in the middle and the Display board is on top. To set the

electronic options, this stack may need to be disassem-

bled. There are few reasons to change the default set-

tings shown in Table 1-1. If they are acceptable, the

stack does not need to be disassembled. However, if the

settings need to be changed to fit the application, follow

the steps below to disassemble the stack.

Disassemble Steps:

1. Back out the bolt (located on the side of the trans-

mitter) holding the cover lock in place. Disengage it

from the ridged circuit end cap (contains view of dis-

play). Remove the threaded circuit end cap that con-

tains the LCD display window.

2. Remove three screws holding the stack in place.

Remove the Display board gently, it is connected to

the CPU board via a ribbon cable.

The CPU board has two jumpers (JP1 and JP3) as

shown in Figure 1-2. The Write Enable (WRT) is factory

jumpered IN (jumper is across both pins) to allow the

instrument to be calibrated. JP3 is factory set with the

jumper in the 50Hz position (jumper is across one pin

only) and need not be reset.

3. Change the settings (jumpers) to fit the application.

4. Ensure the cable connections between the display

board and the CPU board are fully seated and repo-

sition the display board.

The Model 3081 display can be rotated in 90° increments

to three positions to optimize installation convenience.

This will enable the user to see the display right-side-up,

regardless of mounting position. The transmitter should

not be installed with the conduit openings on the top. The

black plastic infrared sensor (small square window) on

the plastic bezel is the top of the display.

Display positioning:

5. Position the display board on the stand offs with the

black plastic infrared sensor in the optimum position.

6. Replace the three screws holding the stack to the

case. Do not overtighten; this may crack the display

glass.

7. Replace threaded circuit end cap.

8. Secure the cover lock tab within the ridged surface

on the side of the circuit end cap.

9. Tighten the bolt to secure the circuit end cap.

Once the transmitter is installed and operational, the set-

tings can be protected by disassembling the stack and

removing JP1 on the CPU board. When JP1 is set to

OUT (jumper is contacting only one pin), no parameter

settings can be saved.

1.2.2 Accessing the PCB Stack (Model 81T). The

stack is similar to that in the Model 3081T. The display-

board is furthest in, and the CPU board is in the middle

(see Figure 1-1).

Disassemble Steps:

1. Remove the four front cover screws and open the

front cover of the Model 81 T.

2. Locate the RFI/EMI metal shield.

3. Disengage the three screws attaching the shield

and remove it.

4. Set the jumpers as required for the installation.

These are the same as presented in Table 1-1.

5. To reassemble, reverse the above procedure.

MODELS 3081T/81T SECTION 1.0

INSTALLATION

FIGURE 1-2. CPU PCB – Model 3081/81 Jumper Locations

DWG. NO. REV.

43081C24 B

1-3

MODELS 3081T/81T SECTION 1.0

INSTALLATION

1.3 MECHANICAL INSTALLATION (3081T)

The Model 3081 T 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 1-3),

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 installation site should permit the use of standard

sensor cable lengths: for longer distances ( > 33 feet), a

junction box is required.

• The transmitter should be easily accessed by operating

and maintenance personnel.

1.3.1 Flat Surface Mounting. The transmitter may be

mounted on a flat surface (see Figure 1-3) using the thread-

ed mounting holes on the bottom of the transmitter.

1.3.2 Pipe Mounting Bracket. An optional pipe mounting

bracket is available. See Figure 1-4 for mounting informa-

tion.

1.4 MECHANICAL INSTALLATION (81T)

Although the Model 81 T Transmitter is suitable for outdoor

use, it should be located in an area where temperature

extremes and vibrations are minimum or absent. Select an

installation site that is at least one foot from any high voltage

conduit, has easy access for operating personnel, and is not

in direct sunlight.

1.4.1 Panel Mounting. The transmitter is designed to fit into

a DIN standard 137.9 x 137.9 mm (5.43 x 5.43 in.) panel

cutout.

1. Remove the cap plugs from the rear of the transmitter.

2. Install the transmitter as shown in Figure 1-5 and 1-6. Insert

the transmitter enclosure through the front of the panel

cutout and align the panel mounting brackets as shown.

3. Insert two mounting bracket screws through each of

the two mounting brackets and into the tapped holes in

the rear of the transmitter enclosure and tighten.

1.4.2 Wall or Surface Mounting

1. Remove the cap plugs from the rear of the transmitter.

2. Mount the transmitter to the wall mounting bracket

using the four screws provided (see Figure 1-6).

3. Attach the mounting bracket to the wall using customer

supplied hardware.

1.4.3 Pipe Mounting

1. Remove the cap plugs from the rear of the transmitter.

2. Attach the mounting bracket to the rear of the transmit-

ter and tighten the four screws (see Figure 1-5).

3. Place supplied U bolts around the mounting pipe and

through the pipe mounting bracket. Tighten the U bolt

nuts until the transmitter is securely mounted to the

pipe.

Jumper Jumper Position

ANALOG PCB

JP1 IN Earth Ground

DIGITAL PCB

JP1 IN Write Enable

JP3 IN 50Hz

TABLE 1-1. Jumper Settings

FIGURE 1-3. Dimensional Information – Model 3081 T

DWG. NO. REV.

43081C01 C

MODELS 3081T/81T SECTION 1.0

INSTALLATION

1-4

MILLIMETER

INCH

1-5

MODELS 3081T/81T SECTION 1.0

INSTALLATION

Figure 1-4. Mounting Information - Model 3081 T

DWG. NO. REV.

40308103 B

DWG. NO. REV.

40308104 G

MILLIMETER

INCH

1-6

MODELS 3081T/81T SECTION 1.0

INSTALLATION

FIGURE 1-5. Mounting Dimensions – Model 81 T

DWG. NO. REV.

40008102 B

MILLIMETER

INCH

Horizontal pipe shown. To vertical pipe,

rotate bracket and U-bolts 90°.

1

1-7

MODELS 3081T/81T SECTION 1.0

INSTALLATION

Figure 1-6. Mounting Exploded Views - Model 81 T

DWG. NO. REV.

40008104/5 B

PANEL MOUNTING

(POWER IN)

1-8

MODELS 3081T/81T SECTION 1.0

INSTALLATION

1.5 ELECTRICAL INSTALLATION

1.5.1 Conductivity Sensors

Rosemount Analytical Inc.’s inductive conductivity sensors

are compatible with the Model 3081T/ 81T transmitters.

Please refer to Figures 1-7 thru 1-9 for appropriate sensor

to transmitter wiring. The sensor cable should be routed

through the conduit opening closest to the Pin 2 connec-

tion.

NOTE

The sensor wiring must be compatible with soft-

ware settings (see Table 1-2 and Section 4.0).

1.5.2 Power Supply/Current Loop Wiring.

The Model 3081T/81T operates within a range of 12-42.4

VDC power. The power supply must be capable of provid-

ing for a surge current during the first 80ms of start up (This

is 40mA with a 250Ω series resistor and 24 VDC power

supply. For other series’ resistor and voltage combinations,

this 80-millisecond power surge can not exceed 70 mA).

The power supply/current loop wiring routes through the

conduit opening closest to pin number 16 (for Model

3081T) or TB-2 (for Model 81T). Connect as illustrated in

Figure 1-10. For shielded power supply/current loop cable,

the shield should be connected to the earth ground con-

nection as illustrated in Figures 1-7 through 1-10).

1.5.3 High/Low Range Sensor Wiring.

The Model 3081T sensor connection requires connecting

the white toroid wire (see Figure 1-7) to either TB-1 pin 11

(indicated on the inside of the terminal end cap) for high

range, and TB-1 pin 12 for low range (see Figure 1-7). To

access the terminal block, unscrew the terminal end cap.

The Model 81 sensor connection requires connecting the

white toroid wire (see Figure 1-7) to either TB-1 pin 11 for

high range, and TB-1 pin 12 for low range.

Autorange “on” allows the instrument range to operate from

0 to 2,000,000 µS/cm. Autorange “off” limits the range to 4

ranges (0, 1, 2, and 3). Refer to Table 1-2 and Program

Set-up in Section 4.4 for manual or auto range features that

this application requires. Using the selected ranges

improves the loop accuracy specification of the transmitter

and sensor.

1.6 INSTALLATION VERIFICATION

1.6.1 Overview. Verification of installation includes ensur-

ing that the proper precautions have been observed dur-

ing the installation process and recognizing whether the

instrument is operating properly upon power up.

1.6.2 Precautionary Checklist. Before applying power

verify the following:

1. Sensor wiring and power supply/loop wiring are not in

the same conduit.

2. Sensor or power supply/loop wiring are at least 12

inches from any high current lines.

3. Sensor chosen is compatible with the 3081T/81T

Transmitter.

4. Terminal end cap has been replaced.

1.6.3 Power Up. Activate power supply. Upon powering

up, with the sensor in solution, the transmitter:

1. Should display a live conductivity reading in large, dark

numerals on a gray background.

2. Should display the present temperature and current

output in smaller numerals on the lower line of the dis-

play screen.

3. Should NOT have the word FAULT or HOLD appearing

on the left edge of the display. The display should not

be flashing. If any of these conditions exist, refer to

Section 6.0 for explanation of conditions, and possible

solutions.

1.7 HAZARDOUS LOCATIONS

1.7.1 Intrinsically Safe Installation.

For BASEEFA I.S. installation for Model 3081T, see Figure 1-11.

For BASEEFA I.S. installation for Model 81T, see Figure 1-12.

For FMRC I.S. installation for Model 3081T, see Figure 1-13.

For FMRC I.S. installation for Model 81T, see Figure 1-14.

For CSA I.S. installation for Model 3081T, see Figure 1-15.

For CSA I.S. installation for Model 81T, see Figure 1-16.

1.7.2 Explosion-Proof installation (Model 3081T only).

See Figure 1-17 for Model 3081T explosion-proof installa-

tion wiring.

TABLE 1-2. Hardware/Software Compatibility

(Measurement Range [µS/cm]*)

MANUAL RANGE 0 1 2 3

(20 mA setpoint)

Low Range 80-800 800-8,000 8,000-80,000 80,000-400,000

(accuracy: ± 1.0%)

High Range 1,100-11,000 11,000-110,000 110,000-1,200,000 N/A

(accuracy: ± 1.0%)

Wire Terminal

11 or 12

*NOTE: Values shown are for uncompensated conductivity using a cell constant of 1.0. The conductivity values auto ranges

from 0 to 2,000,000

µS/cm with an accuracy of 5 to 10% ±150 µS/cm depending on the process conditions,

installation, and the sensor used. For greater accuracy and repeatability, manual range selection is recommended.

1-9

MODELS 3081T/81T SECTION 1.0

INSTALLATION

FIGURE 1-7. Wiring Schematic Showing Signal Function On Each Connection

DWG. NO. REV.

43081T01 A

MILLIMETER

INCH

FOR BEST EMI/RFI PROTECTION, A METAL CABLE GLAND

FITTING MAY BE USED TO CONNECT THE BRAID TO THE

INSTRUMENT CASE.

FOR CUSTOMER SUPPLIED CABLE OR FOR

UNPREPPED ROSEMOUNT CABLE, SPECIFY

PN

9200275 (BELOW 120 °C) (SPECIFY LENGTH)

TB1

12

11

1-10

MODELS 3081T/81T SECTION 1.0

INSTALLATION

FIGURE 1-8. Model 3081/81T Sensor Wiring Schematic by Sensor Model

DWG. NO. REV.

43081T03 A

MILLIMETER

INCH

12

11

12

11

1-11

FIGURE 1-9. Model 3081/81T Sensor Wiring with J-Box

MODELS 3081T/81T SECTION 1.0

INSTALLATION

DWG. NO. REV.

43081T04 A

MILLIMETER

INCH

11

12

1-12

MODELS 3081T/81T SECTION 1.0

INSTALLATION

FIGURE 1-10. MODEL 3081/81T TERMINAL BLOCKS

1-13

MODELS 3081T/81T SECTION 1.0

INSTALLATION

FIGURE 1-11. Intrinsically Safe BASEEFA Model 3081T Label

FIGURE 1-12. Intrinsically Safe BASEEFA Model 81T Label

MODELS 3081T/81T SECTION 1.0

INSTALLATION

1-14

FIGURE 1-13. FMRC Intrinsically Safe Installation for Model 3081T (1 of 2)

MODELS 3081T/81T SECTION 1.0

INSTALLATION

FIGURE 1-13. FMRC Intrinsically Safe Installation for Model 3081T (2 of 2)

1-15

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Rosemount 3081-T Two-Wire Conductivity Transmitter Owner's manual

Rosemount 3081-T Two-Wire Conductivity Transmitter Owner's manual

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