Fisher 444 Alphaline User Manual

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00809-0100-4263 English Rev. AA

Model 444 Alphaline®

Temperature

Transmitters

Product Discontinued

Product Manual

Rosemount Inc.

8200 Market Boulevard

 

 

Chanhassen, MN 55317 USA

Tel 1-800-999-9307

 

 

Telex 4310012

INTE

 

Fax (612) 949-7001

PR IN

 

U.S.A

 

 

D

 

 

.

Model 444 Alphaline®

Temperature Transmitters

NOTICE

Read this manual before working with the product. For personal and system safety, and for optimum product performance, make sure you thoroughly understand the contents before installing, using, or maintaining this product.

Within the United States, Rosemount Inc. has two toll-free assistance numbers.

Customer Central:

1-800-999-9307

(7:00 a.m. to 7:00 p.m. CST)

 

Technical support, quoting, and order-related questions.

North American

1-800-654-7768

(24 hours a day – Includes Canada)

Response Center:

Equipment service needs.

For equipment service or support needs outside the United States, contact your local Rosemount representative.

The products described in this document are NOT designed for nuclear-

 

qualified applications.

 

Using non-nuclear qualified products in applications that require nuclear-

 

qualified hardware or products may cause inaccurate readings.

 

For information on Rosemount nuclear-qualified products, contact your local

-0004

Rosemount Sales Representative.

 

SNF

Rosemount, the Rosemount logotype, and Alphaline are registered trademarks of Rosemount Inc. Chromel and Alumel are trademarks of Hoskins Mfg. Co.

Cover Photo: 444-005AC

Fisher-Rosemount satisfies all obligations coming from legislation to harmonize product requirements in the European Union.

00809-0100-4263

© Rosemount Inc. 1998. http://www.rosemount.com

SECTION 1

Introduction

SECTION 2

Installation

SECTION 3

Calibration

Table of Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Mounting Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Access Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Housing Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Terminal Side of Electronics Housing . . . . . . . . . . . . . . . . . 2-2 Circuit Side of Electronics Housing . . . . . . . . . . . . . . . . . . 2-2 Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Sensor Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 RTD Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Thermocouple or Millivolt Inputs . . . . . . . . . . . . . . . . . . . . 2-6 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Multi-Channel Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Surges/Transients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 Temperature Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 Moist or Corrosive Environments . . . . . . . . . . . . . . . . . . . . . . . 2-9 Hazardous Location Installation . . . . . . . . . . . . . . . . . . . . . . . . 2-9 Intrinsically Safe Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9 Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Calibrating a RTD Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Calibrating a Thermocouple Transmitter

Using a Compensated Thermocouple Simulator . . . . . . . . . . . 3-5

Using an Ice Bath . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Calibrating a Low-Power Transmitter . . . . . . . . . . . . . . . . . . . . . . 3-8

Calibrating a Millivolt Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

i

SECTION 4

Maintenance and

Troubleshooting

SECTION 5

Specifications

and Reference Data

SECTION 6

Options

APPENDIX A

Approval Drawings

APPENDIX B

Temperature Sensor

Reference Information

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Hardware Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Reassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Interchangeability of Parts

Mechanical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Electrical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Burnout Protection Adjustments . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Repair and Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

LCD Meter Specifications

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Physical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Analog Meter Specifications

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Physical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

LCD / Analog Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

ii

Section

1 Introduction

OVERVIEW

This manual is designed to assist in installing, operating, and

 

maintaining Rosemount® Model 444 Alphaline® Temperature

 

Transmitters.

 

Section 2 Installation

 

provides mechanical, electrical, and environmental considerations to

 

guide you through a safe and effective transmitter installation.

 

Section 3 Calibration

 

provides different Model 444 calibration procedures.

 

Section 4 Maintenance and Troubleshooting

 

provides hardware diagnostics, maintenance tasks, basic hardware

 

troubleshooting techniques, and considerations for returning materials.

 

Section 5 Specifications and Reference Data

 

provides functional, performance, and physical transmitter

 

specifications; also includes transmitter dimensional drawings,

 

ordering information, and spare parts.

 

Section 6 Options

 

provides a listing of transmitter options and a description of each.

 

Appendix A Approval Drawings

 

contains approval drawings for Canadian Standards Association (CSA)

 

and Factory Mutual (FM) instrinsic safety installation.

 

Appendix B Temperature Sensor Reference Information

 

provides reference information regarding the application of various

 

Rosemount temperature sensors.

1-1

Rosemount Model 444 Alphaline Temperature Transmitters

1-2

Section

2 Installation

OVERVIEW

This section includes the following transmitter installation

 

information:

 

• General Considerations

 

• Mechanical Considerations

 

Mounting Stability

 

Access Requirements

 

• Electrical Considerations

 

Power Supply

 

Field Wiring

 

Sensor Connections

 

Grounding

 

Multi-Channel Installations

 

Surges/Transients

 

• Environmental Considerations

 

Temperature Environment

 

Moist or Corrosive Environments

 

Hazardous Location Installation

 

Intrinsically Safe Installation

 

• Installation Procedure

 

Mechanical

 

Electrical

GENERAL

CONSIDERATIONS

Failure to follow these installation guidelines may result in death or serious injury. Make sure only qualified personnel perform the installation.

Explosions can cause death or serious injury. Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications.

Use the Rosemount Model 444 Alphaline Temperature Transmitter when the temperature measurement point is remote from the control, readout, or recording point, or where the measurement point is exposed to environmental conditions that would be harmful to unprotected signal conditioning equipment.

Electrical temperature sensors such as RTDs and thermocouples

2-1

Rosemount Model 444 Alphaline Temperature Transmitters

MECHANICAL CONSIDERATIONS

Mounting Stability

Access

Requirements

Housing Rotation

Terminal Side of

Electronics Housing

Circuit Side of

Electronics Housing

produce low-level signals proportional to their sensed temperature. Model 444 temperature transmitters convert the low-level sensor signal to a standard 4–20 mA dc signal that is relatively insensitive to lead length and electrical noise. This current signal is then transmitted to the control room via two wires.

Figures 2-1, and 2-2 show recommended mounting configurations for transmitter and sensor assemblies. See Section 6 Options for information regarding Model 444 transmitter accessories.

You can attach the transmitter directly to the sensor assembly as shown in Figures 2-1 and 2-2. An optional mounting bracket permits the transmitter to be mounted remotely from the sensor(s), either on a flat surface or attached to a two-inch pipe (See Figure 2-11 on page 2-13). The choice of mounting method must take into account a number of factors:

Mounting stability is an important consideration. The transmitter, though rugged, may require supplementary support under high-vibration conditions, particularly if extensive thermowell lagging or long extension fittings are used. In such instances, the pipestand mounting technique shown in Figure 2-11 on page 2-13 is preferable.

When choosing an installation location and position, take into account the need for access to the transmitter.

You may rotate the transmitter in 90-degree increments to improve field access to both compartments.

Make wiring connections through the conduit openings on the terminal side of the electronics housing. Mount the transmitter so the terminal side is accessible, and be sure to provide adequate clearance for cover removal.

The transmitter electronics are installed in the circuit side of the transmitter housing. In case of electronic malfunction, provide adequate clearance for circuit-side cover removal. Also, be sure to account for additional clearance if a meter is to be installed. For more information regarding the meter option, refer to Section 6 Options.

2-2

Installation

FIGURE 2-1. Recommended

Process Mounting.

 

 

 

Thermowell

 

 

 

 

Union or Coupling

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hex

 

 

 

 

 

 

Sensor Hex

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Extension

 

 

 

 

 

 

 

 

 

 

 

Nipple

 

 

 

 

 

 

 

Transmitter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Conduit for

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermowell

 

 

 

 

 

 

 

Field Wiring

 

 

 

 

 

 

 

(dc Power)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Extension

 

 

 

 

 

 

 

 

 

 

3.2

 

 

 

 

 

 

 

 

Length

 

 

(81.3)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dimensions are in inches (millimeters).

 

 

 

 

 

 

 

 

444-0200C

FIGURE 2-2. Recommended

Process Mounting with

Drain Seal.

Extension

Nipple

Union or Coupling

Sensor Hex

Coupling

Close Nipple

Street Ell

Transmitter

Terminal

Side

Drain Seal

Conduit for

0200F-

Field Wiring

(dc Power)

444

 

2-3

Rosemount Model 444 Alphaline Temperature Transmitters

ELECTRICAL CONSIDERATIONS

Power Supply

FIGURE 2-3. Model 444

Load Limits.

Field Wiring

This section contains information that you should consider when preparing to install Model 444 transmitters. Read this section carefully before going on to the installation procedures. Metal conduit should be used to enclose cabling for best results in electrically noisy environments.

The dc power supply should provide power with less than 2% ripple. The input voltage versus load limitation relationship for 4–20 mA transmitters is shown in Figure 2-3. Figure 2-4 shows field wiring for a standard Model 444 transmitter. Figure 2-5 shows field wiring for Models 444LL and 444LM low-power voltage output units, which require 100K ohms minimum load. The total R-load is the sum of the resistance of the signal leads and the load resistance of the controller, indicators, and related devices. Note that the resistance of intrinsic safety barriers, if used, must be included in the total load.

Power Supply Load Limitations

RLOAD (MAX.) = 50 3 (V(MIN.) – 12)

 

 

1650

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Ohms)

1500

 

 

Voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Too Low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Load

1000

 

 

 

 

 

 

 

Region

 

 

 

 

 

 

 

 

 

500

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operating

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

20

30

40

 

 

 

 

 

 

 

Power Supply (V dc)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Explosions may result in death or serious injury. Do not remove the instrument cover in explosive atmospheres when the circuit is alive.

High voltage that may be present on leads can cause electrical shock. Avoid contact with leads and terminals.

Do not apply high voltage (e.g. ac line voltage) to the transmitter terminals. Abnormally high voltage can damage the unit.

All power to the transmitter is supplied over the signal wiring. Signal wiring need not be shielded, but use twisted pairs for best results. Do not run unshielded signal wiring in conduit or open trays with power wiring, or near heavy electrical equipment. To power the transmitter, connect the positive power lead to the terminal marked “+” and the negative power lead to the terminal marked “–” (see Figures 2-4 and 2-5). Tighten the terminal screws to ensure adequate contact. No additional power wiring is required.

2-4

Installation

FIGURE 2-4. Field Wiring for the Standard Model 444 Transmitters.

FIGURE 2-5. Field Wiring for Low-Power Model

444 Transmitters

(444LL and LM).

Sensor

Connections

Meter Connections

{

(+)

(+)

{ dc Power

 

and Signal

 

 

 

Test Points

 

(–)

(–)

 

 

 

 

 

 

 

+

 

+ –

+

RTD Input

 

 

 

 

 

 

 

(typical)

 

 

 

 

 

 

 

 

 

 

Optional

+ +

 

 

 

 

 

 

 

 

 

Ground

 

 

 

 

Zero Adjust

 

 

Span Adjust

 

 

 

 

 

 

 

 

 

 

 

 

(+) dc Power

 

Output Load Limitation

Output Voltage (+)

 

(–) Common

 

Minimum Load = 100K

 

 

 

 

 

 

 

Shield

 

 

 

 

 

 

 

 

 

 

Power

A to D

RTD Input

 

 

 

 

 

Supply

Converter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Optional

 

 

 

 

 

 

 

Ground

Zero Adjust

 

 

Span Adjust

 

 

 

 

 

 

 

 

 

 

444-0000C02A

444-0000A02A

Explosion may result in death or serious injury. Do not remove the instrument cover in explosive atmospheres when the circuit is alive.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High voltage that may be present on leads can cause electrical

 

 

 

shock. Avoid contact with the leads and the terminals.

 

RTD Inputs

 

 

 

Various RTD configurations are used in industry; each configuration offers a

 

specific solution for compensating the effects of lead wire resistance. They

 

include 3- and 4-wire designs. The correct installation for each of these RTDs is

 

shown in Figures 2-6a and b on page 2-6.

 

If the transmitter is mounted remotely from the RTD, operation will be

 

satisfactory, without recalibration, for lead wire resistances of up to 2 ohms per

 

lead (equivalent to 200 feet of 20 AWG wire). In this case, the leads between the

 

RTD and transmitter should be shielded.

2-5

Rosemount Model 444 Alphaline Temperature Transmitters

The correct connections for a compensation loop RTD and a 2-wire RTD are shown in Figure 2-6c and Figure 2-6d, respectively. In a 2-wire RTD, however, both leads are in series with the sensor element, so significant errors (0.1 °C) could occur if the lead lengths are greater than one foot. For longer runs when using a 2-wire RTD, attach a third lead and connect as shown in Figure 2-6a.

FIGURE 2-6. Sensor Wiring Diagrams.

 

Signal

 

 

Signal

 

 

Signal

 

 

Signal

 

 

 

 

 

 

 

 

 

 

 

 

 

+

+

 

 

 

 

 

 

 

 

 

 

 

+

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Red Red White

 

 

 

Red Red White White

 

 

 

 

 

 

Black Black

Red White

 

 

 

 

 

 

 

Red

White

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Jumper

 

 

 

 

 

 

 

Model 444 with 3-Wire RTD

 

Model 444 with 4-Wire RTD

 

 

 

Model 444 with

 

 

Model 444 with 2-Wire RTD

 

 

 

Figure 2-6a

 

 

Figure 2-6b

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Comp. Loop RTD

 

 

 

 

 

 

Figure 2-6d

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2-6c

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal

 

 

 

 

 

 

 

Signal

 

 

 

 

Signal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

+ Output

Common –

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Red Red White

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low T/C

 

+

 

 

High T/C

 

 

Model 444LL or 444LM

 

 

+ + – –

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

with 3-Wire RTD

+

 

 

Figure 2-6e

Model 444MV with Millivolt

Model 444MV used as

Differential Millivolt

Input or Model 444T Series

Transmitter (T/C Junctions

with Grounded or

must be ungrounded)

Ungrounded Thermocouple

Figure 2-6g

Figure 2-6f

 

444-0203A;B;C;D

FIGURE 2-7. Characteristics of Thermocouple and RTD Input Wires.

Thermocouple Type

Positive Lead

Negative Lead

J

Iron (Magnetic)

Constantan (Non-magnetic)

K

Chromel (Non-magnetic)

Alumel (Magnetic)

T

Copper (Yellow color)

Constantan (Silver color)

E

Chromel (Shiny metal)

Constantan (Dull metal)

R

Platinum 13% Rhodium

Platinum

S

Platinum 10% Rhodium

Platinum

Single Element RTD

Compensation Loop RTD

Dual Element RTD

Red

Red

 

 

 

Red

Red

 

 

 

 

 

 

White

 

 

 

White

 

White

 

Black

White

Black

 

 

 

 

 

 

 

 

Green

White

Black

 

Green

444-0207A

2-6

 

Installation

Thermocouple or

In the case of thermocouples, make connections between the sensor and the

Millivolt Inputs

transmitter with thermocouple wire. For process mounting applications, connect

 

the thermocouple directly to the transmitter. For installations where the

 

transmitter is mounted remotely from the sensor, use appropriate thermocouple

 

extension wire. As with all low-level signal wiring, shielding is recommended for

 

long runs. Make input connections for the Model 444MV Millivolt Transmitter

 

using copper wires. The correct connections for thermocouple and millivolt

 

inputs are shown in Figures 2-6f and g.

Grounding

Multi-Channel

Installations

FIGURE 2-8. Multi-Channel

Installation.

The transmitter will operate with the current signal loop either floating or grounded. However, many types of readout devices are affected by the extra noise in floating systems. If operation appears noisy or erratic, grounding the current signal loop at a single point may solve the problem. The negative terminal of the power supply is the best place to ground the loop. Alternately, either side of the readout device could be grounded. Do not ground the current signal loop at more than one point.

Thermocouple and millivolt transmitters are isolated, so the input circuit also may be grounded at any single point (when a grounded thermocouple is used, this point is the grounded junction), and the signal loop may be grounded at any point.

The 444RL transmitter is not isolated, so there can be no grounds in the RTD circuit. Since RTDs must be well-insulated from ground in order to give correct temperature readings, this is not normally an installation limitation. The positive side of the power supply should not be grounded for use with RTD input transmitters. The 444RI9 should be used with grounded RTDs.

If using shielded wire, connect the shield of the sensor-to-transmitter cable to the shield of the transmitters-to-receiver cable. Ground the shielding only at the signal loop ground.

Figure 2-8 illustrates how several transmitters can be connected to a single master power supply. In this instance, the system can be grounded only at the negative power supply terminal. Since several channels are dependent on one supply, an uninterruptible power supply or backup battery should be considered if loss of all channels would pose operational problems. The diodes shown in Figure 2-8 prevent unwanted charging or discharging of the battery.

 

 

+

Transmitter

+

 

No. 1

dc

 

 

Backup

 

Power

Readout or

Battery

Supply

 

Controller No. 1

 

 

 

Transmitter

 

 

No. 2

 

 

Readout or

 

 

Controller No. 2

 

 

To Additional

 

 

Transmitters

 

 

444-0202A

2-7

Rosemount Model 444 Alphaline Temperature Transmitters

Surges/Transients

The transmitter will withstand electrical transients of the energy level usually

 

encountered in static discharges or induced switching transients. However, high-

 

energy transients, such as those induced in wiring from nearby lightning strikes,

 

can damage both the transmitter and the sensor.

 

To protect against high-energy transients, install Model 444 transmitters in

 

conjunction with the Rosemount Model 470 Transient Protector. The Model 470

 

prevents damage from transients induced by lightning, welding, heavy electrical

 

equipment, or switch gears. Refer to the Model 470 Transient Protector product

 

data sheet, pub. no. 00813-0100-4191 for more information.

ENVIRONMENTAL

 

CONSIDERATIONS

 

Temperature

The transmitter will operate within specifications for ambient temperatures

Environment

between –25 and 85 °C. It will function, but not necessarily within specifications,

 

in ambient temperatures between

 

–40 and 100 °C.

 

Aside from ambient temperature variations, heat from the process is transferred

 

from the thermowell to the transmitter housing. If the process temperature is

 

near or beyond specification limits, use excess thermowell lagging or an

 

extension nipple to protect the transmitter from the high temperature condition.

 

See Figure 2-10.

 

EXAMPLE:

 

Suppose the maximum ambient temperature is 40 °C and the temperature to

 

be measured is 540 °C. The maximum allowable housing temperature rise is

 

the rated temperature specification limit minus the existing ambient

 

temperature (85 – 40), or 45 °C. As shown in Figure 2-9, an “E” dimension of

 

3.6 inches will result in a housing temperature rise of 22 °C. An “E”

 

dimension of 4 inches would therefore be the minimum recommended length,

 

and would provide a safety factor of about about 25 °C. A longer “E”

 

dimension, such as 6 inches, would be desirable in order to reduce errors

 

caused by transmitter temperature effect, although in that case the

 

transmitter would probably require extra support. If a thermowell with

 

lagging is used, the “E” dimension may be reduced by the length of the

 

lagging.

2-8

Installation

FIGURE 2-9. Model 444

 

60

Transmitter Housing

 

 

(108)

Temperature Rise.

 

 

 

 

50

 

 

(90)

 

 

40

 

 

(72)

HOUSING

 

30

 

(54)

RISE

 

 

 

ABOVE

 

 

AMBIENT

22

20

°C (°F)

 

 

(36)

 

 

10

(18)

0

Transmitter Housing Temperature Rise vs. E Length for a Test Installation

 

 

 

 

 

 

 

 

 

8

1

5

°

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

50

°

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

540 °

 

 

 

 

 

F)

O

en

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

v

 

 

T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(

 

 

 

 

 

 

e

m

pera

ture

 

 

25

 

 

 

 

 

 

 

 

 

1000 °

F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

°

 

 

 

 

 

 

 

 

 

)

Ov

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

en

 

 

 

 

 

 

 

 

 

 

 

 

C

(

 

 

 

 

 

 

 

 

 

Te

m

 

 

 

 

 

 

 

 

 

 

4

8

F)

 

 

 

 

 

 

per

at

ure

 

 

 

 

 

 

 

 

Oven Te

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mperature

 

 

 

 

 

3

 

 

 

 

4

 

 

 

 

 

5

 

6

 

 

 

7

 

 

 

8

9

3.6E Length in Inches

3044-0123A

FIGURE 2-10. Sensor

Assembly Dimensional

Drawings.

 

Connection Head with Extended Cover

½–14 NPT Thread

 

 

 

Bayonet Spring Loaded Sensor

 

 

 

Sensor Installed in

 

 

 

 

Connection Head

 

 

 

 

(Extended Cover)

 

 

 

 

with Coupling and

L

0.25

 

 

Nipple Extension

 

 

 

 

(6)

 

1.0

Sensor X Length (Ref.)

 

5.5

 

 

 

(25)

 

 

 

(140)

 

 

 

 

 

 

 

3.5

2.2

Nominal Fitting

0.53 (13) Max.

 

(89)

(56)

E

 

LengthV

Thread

 

 

 

 

 

Engagement

Spring Loaded Sensor

 

Connection Head with

T (1) + 1.75 (44)

¾–14 NPT

Flat Cover

 

on Thermowell

 

 

 

Sensor Installed in

 

 

Connection Head (Flat

U

 

Cover) with Union and

¾–14 NPT

 

Nipple Extension and

 

Chain

Thermowell

 

NOTE

 

T (1)= 0.0 on Standard Assembly Thermowells

Dimensions are in inches (millimeters).

 

Sensors-0000A06A

2-9

Rosemount Model 444 Alphaline Temperature Transmitters

Moist or Corrosive Environments

Hazardous Location

Installation

Intrinsically Safe

Installation

The transmitter is designed to resist attack by moisture and other corrosives. The coated circuit boards are mounted in a compartment completely sealed from the conduit entrances. O-ring seals protect the interior when the covers are installed. In humid environments, however, it is still possible for moisture “breathing” to occur in conduit lines. If the transmitter is mounted at a low point in the conduit run, the terminal compartment could fill with water, causing electrical shorting. The transmitter should be mounted so moisture from the conduit will not drain into the housing. In some instances a drain seal, installed as shown in Figure 2-2 on page 2-3, is advisable.

Explosions may result in death or serious injury. Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications.

Explosions may result in death or serious injury. Both transmitter covers must be fully engaged to meet explosionproof requirements.

The Model 444 is designed with an explosion-proof housing and circuitry suitable for intrinsically safe and non-incendive operation. Individual transmitters are clearly marked with a tag indicating the approvals they carry. The various approvals are available as options. Refer to Section 5 Specifications and Reference Data for a complete listing of available approvals.

To maintain certified ratings for installed transmitters, install in accordance with applicable installation codes and approval drawings. Refer to Appendix A Approval Drawings for Model 444 installation drawings. For future orders, refer to the current product price list for the most up-to-date information on these approvals.

For explosion-proof installations, installation location must be made in accordance with Rosemount drawing 004440261, Rev. E.

For intrinsically safe installations, installation location must be made in accordance with Rosemount drawing 004440034, Rev. C (CSA) or 00444-0264, Rev. B (SAA).

You can use Intrinsically safe installations instead of explosion-proof installations in hazardous areas. In such configurations, the transmitter and sensor are located in a hazardous area, and the current signal leads are connected to equipment in a non-hazardous area through intrinsic safety barriers that limit the voltage and current fed into the hazardous area. Install in accordance with the barrier manufacturer’s instructions for the specific barrier used. For approval information, refer to Table 5-1 on page 5-4, and Table 5-2 on page 5-5. For installation information, refer to the intrinsically safe barrier systems reference drawings in Appendix A Approval Drawings.

2-10

Installation

INSTALLATION PROCEDURE

Mechanical

Electrical

Installation consists of mounting the transmitter and sensor assembly and making electrical connections. If mounting the transmitter directly to the sensor assembly, use the process mounting technique shown in Figure 2-1 or Figure 2-2, on page 2-3. For transmitter locations remote from the sensor, use conduit between the sensor and transmitter. Transmitter hubs will accept male conduit fittings with ½–14 NPT; ½–14 NPSM; or ½–14 taper thread per ANSIC 80.4.

Explosion may result in death or serious injury. Do not remove the instrument cover in explosive atmospheres when the circuit is alive.

High voltage that may be present on leads may cause electrical shock. Avoid contact with the leads and the terminals.

Process leaks may result in death or serious injury. Install and tighten thermowells or sensors before applying pressure, or process leakage may result. Removing the thermowell or sensor while in operation may cause process fluid leaks.

1.Mount the thermowell to the pipe or process container wall.

2.Attach any necessary extension nipples and adapters. Seal the nipple and adapter threads with silicone or tape.

3.Screw the sensor into the thermowell.

4.Install drain seals if required for severe environments or to satisfy code requirements (See Figure 2-2 on page 2-3).

5.Attach the transmitter to the thermowell assembly. Seal the adapter threads with silicone or tape.

6.Install conduit for field wiring to the remaining conduit entry of the transmitter. Seal conduit threads with silicone or tape.

7.Pull field wiring leads through the conduit into the terminal side of the transmitter housing.

For explosion-proof installations, wiring connections must be made in accordance with Rosemount drawing 004440261, Rev. E.

For intrinsically safe installations, wiring connections must be made in accordance with ANSI/ISA-RP12.6, and Rosemount drawing 00444-0034, Rev. C (CSA) or 004440264, Rev. B (SAA).

For all installations, wiring connections must follow the

National Electric Code.

2-11

Rosemount Model 444 Alphaline Temperature Transmitters

Preliminary Checkout

1.For any Model 444 unit, first verify that the transmitter is calibrated to the required range. Calibration is usually performed by substituting an input in place of the sensor, and this is most conveniently accomplished prior to sensor connection. Refer to the calibration procedures in Section

4 Maintenance and Troubleshooting.

Input Connections

2.Model 444RL: Connect the RTD leads as shown in Figure 2-6a, b, c, d, or e depending upon the lead compensation method used.

Model 444T series: Connect the thermocouple leads as shown in Figure 2-6f. Polarity is important; be sure to identify the leads accurately. The negative lead is usually red; if there is no color coding, the characteristics provided in Figure 2-7 may be helpful.

Model 444MV: If using the transmitter as a millivolt-to-milliampere converter, use ordinary copper leads for input connections as shown in Figure 2-6f. If using the transmitter with two thermocouples to measure differential millivolt, connect the thermocouples as shown in Figure 2-6g. The “high” thermocouple causes the transmitter output to increase when its temperature increases relative to the “low” thermocouple. Grounded thermocouples cannot be used for differential measurements.

Models 444LL and LM: In these low-power option packages, the RTD leads are connected the same as in the conventional RTD arrangements shown in Figure 2-6a, b, c, and d.

Output Connections

3.For all 4–20 mA models, use ordinary copper wire of sufficient size to assure that the voltage across the transmitter power terminals does not go below 12 V dc (See Figure 2-3). For multi-channel or intrinsically safe installations, see applicable paragraphs in this section.

Model 444RL: Connect current signal leads as shown in Figure 2-6a, b, c, or d.

Model 444T series: Connect current signal leads as shown in Figure 2-6f.

Model 444MV: Connect current signal leads as shown in Figure 2-6f or g.

Models 444LL and LM: Connect current signal leads as shown in Figure 2-6e.

Final Checkout

4.For all models, recheck the polarity and correctness of connections; then turn the power on.

2-12

Installation

FIGURE 2-11. Model 444 with

Optional Mounting Bracket.

PIPESTAND MOUNTING

PANEL OR SURFACE MOUNTING

Transmitter can be Rotated 90°

5/16 -inch Bolts (four required, not furnished)

2.81 (81)

 

Mounting Bracket

 

¼–20 3½-inch

 

Bolt (4)

Clearance Hole

 

for ¼-inch Bolt

5/16 –18 U-bolt for

(eight places)

 

2-inch Pipe (2)

5.00 (127)

NOTE

Dimensions are in inches (millimeters).

Hole for 5/16 -inch Bolts (four places)

444-1151G, 1151F04A

FIGURE 2-12. Model 444

Dimensional Drawings

 

 

 

 

0.75 (19)

 

 

7.5 (191) Max. with Optional

Clearance for

 

 

Cover Removal

 

 

 

Meter

(Typical)

4.5 Max.

 

 

 

4.5 Max.

Permanent Tag

 

 

(114)

(114)

 

 

(Optional)

 

 

 

 

Meter Housing

 

 

 

 

 

4.5 Max.

½–14 NPT per

 

 

 

ANSI C80.4 for

 

 

 

(114)

Conduit or Sensor

 

Terminal

 

 

Connection

 

Circuitry

 

 

(two places)

4.2

this Side

 

 

 

(117)

 

 

 

 

Terminal

 

Nameplate

 

 

Connections

 

 

 

 

this Side

 

Explosion Proof or Intrinsic Safety Label (Optional)

0.36 (9)

Mounting Holes

¼–20 UNC–2B

0.375 (10) Min. Dp.

(four places)

NOTE

Dimensions are in inches (millimeters).

0.72 (18)

0.87 (22)

1.7

(44)

444-51LTE 05A, 51LTG 05A, 51LTF 05A

2-13

Rosemount Model 444 Alphaline Temperature Transmitters

2-14

Section

3 Calibration

OVERVIEW

SAFETY MESSAGES

Each transmitter is factory calibrated to the temperature range shown on the nameplate. If calibration to a specific range is not specified on the purchase order, the transmitter is calibrated to maximum span with a base temperature of 0 °C, and the “Calibration” entry on the transmitter nameplate is left blank. For more specific calibration information and a complete breakdown of transmitter parts, refer to

Section 5 Specifications and Reference Data.

Only a few calibration laboratories have the kind of precision temperature baths necessary for accurate direct calibration of a temperature sensor or sensor/transmitter system. As a result, the transmitter is normally calibrated by substituting a resistance decade box for an RTD or a compensated thermocouple simulator for a thermocouple.

This section contains the following transmitter calibration information:

Calibrating a RTD Transmitter

Calibrating a Thermocouple Transmitter

Calibrating a Low-Power Transmitter

Calibrating a Millivolt Transmitter

This section contains procedures that require removing the transmitter covers and making electrical connections. The following safety messages apply to all such procedures.

Explosion may result in death or serious injury. Do not remove the instrument cover in explosive atmospheres when the circuit is alive.

High voltage that may be present on leads can cause electrical shock. Avoid contact with the leads and the terminals.

3-1

Rosemount Model 444 Alphaline Temperature Transmitters

CALIBRATING A RTD TRANSMITTER

Calibration Procedure

Calibration Equipment Required:

Readout Resistor. The transmitter test terminals give a 40–200 mV signal. The Models 444RL and444RL ___B0912 have a jumper-selectable 4–20 mA test output option (2-board sets). If this is not suitable for the test equipment available, a ±0.1% tolerance, 0.5 W precision wirewound resistor is needed. Suggested values include a 100-ohm resistor to give a 0.4 to 2 volt output; or 500 ohms for 2 to 10 volts.

Voltmeter (such as a 5-digit DVM). Voltage rating is dependent upon the test signal. Accuracy is ±0.01%; resolution is 1 mV.

dc Power Supply. Power capability is 24 V dc at 35 mA.

Resistance Decade Box. Precision type, 5-dial, with largest dial providing 100ohm steps. Accuracy is ±0.02 ohm. The decade box should be periodically calibrated against a 5-dial Wheatstone bridge.

Lead Simulation Resistors. If the transmitter is to be mounted remote from the RTD, and the lead resistance between the transmitter and the RTD is greater than 2 ohms per lead (equivalent to 200 ft of 20 AWG wire), the transmitter should be trimmed with simulated lead resistances for best accuracy. This requires wirewound resistors with resistance values equal to the nominal lead resistance of the RTD.

To calibrate a model 444RL or 444RL___B0912, perform the following procedure:

1.The Models 444RL and 444RL ___B0912 have a jumper-selectable 4–20 mA test output option. If a 4–20 mA test output is required, reposition the test terminal output jumper on the range board (the default setting is 40– 200 mV). Refer to steps 2 through 4 of the disassembly procedure, on page 4-4, for information on removing the circuit board assembly.

Place the jumper in the position labelled “A” for a 4–20 mA test output. See Figure 3-1. Refer to steps 5 through 12 of the reassembly procedure, on page 4-5, for information on reinstalling the circuit board assembly.

2.Remove the cover from the terminal side of the transmitter housing.

3.If an RTD is already connected, remove all RTD lead connections.

4.Attach the calibration test equipment as shown in Figure 3-2. Use miniature banana plugs to make terminal connections. Use simulated lead resistors only if necessitated by long lead wire lengths, as discussed above.

NOTE

If using RTD configurations other than the 3-wire design shown in Figure 3-2, refer to Figure 2-6 on page 2-6 for the correct wiring.

5.If trimming the transmitter to a new range, you may have to reposition the Coarse Zero Jumper on the Range Board. If so, see the disassembly procedure on page 4-4. Position the jumper in the location shown in Table 3-1. (A transmitter with a Base Temperature outside the regions shown in Table 3-1 is a special design, and does not contain a Coarse Zero Jumper.) Reassemble the circuit boards.

3-2

Calibration

TABLE 3-1. Coarse Jumper

Location, Model 444R.

6.Determine the RTD resistance at the desired base and full scale temperatures. For Calibration Code 1 (see Table 5-3, on page 5-9), these resistances are listed in Table B-1.

7.Turn the power on.

8.Set the decade box to the resistance corresponding to the desired base temperature. Adjust the zero potentiometer until the output is 4 mA. Remember that recovery time of the unit from an underscale condition is longer than from an over-scale condition. Therefore, set the box to a higher resistance than that desired, then bring it down to the correct value.

9.Set the decade box to the resistance corresponding to the desired full scale temperature. Adjust the span potentiometer until the output is 20 mA.

10.Repeat steps 8 and 9 until you obtain the 4 and 20 mA readings without readjusting the span and zero potentiometers. Complete this process more quickly by noting the full scale reading before readjusting the span pot, using the span pot to overshoot the desired reading by 20%, and then using the zero pot to readjust the full scale reading to 20 mA.

EXAMPLE:

To calibrate the Model 444RL1U1 for a range of 100 to 150 °F (38 to 66 °C), first consult Table 3-1, and plug the jumper into pins Z2. From Table B-1, trim points are 114.68 and 125.37 ohms corresponding to 100 °F and 150 °F respectively. After adjusting the base to 4 mA, and setting the decade to full scale resistance, output equals 22.5 mA, or 2.5 mA greater than desired. Set the span pot to an output lower than 20 mA by the amount equal to 20% of 2.5 equals 0.5 mA, or 19.5 mA. Reset the zero pot so the output equals 20 mA. Repeat steps 8 and 9 and this procedure until readjustments are no longer necessary.

11.Disconnect the decade box and the readout resistor. Reconnect the RTD and power leads. Replace the terminal cover.

12.Mark the correct range in the “Calibration” space on the nameplate

.

Base Temperature

 

 

Jumper Location

Region

 

 

 

 

 

 

 

 

 

 

 

 

 

 

° C

° F

 

444RL1

 

444RL2

444RL3

 

 

 

 

 

 

 

–50 to 0

–58 to 32

 

Z1

 

Z1

Continuously

0 to 50

32 to 122

 

Z2

 

Z1

adjustable

50 to 100

122 to 212

 

Z3

 

Z2

(no jumper)

100 to 150

212 to 302

 

Z4

 

Z2

 

 

 

 

 

 

 

 

NOTE

If the base temperature is at a dividing point between regions, use the lower jumper position optimum performance; i.e., use location Z1 rather than Z2 for Model 444RL1 with a base temperature of 0 °C.

3-3

Rosemount Model 444 Alphaline Temperature Transmitters

FIGURE 3-1. Location of Test Input and Burnout Protection Jumper on Model 444RL Range Board.

FIGURE 3-2. RTD

Transmitter Calibration

Diagram.

Transmitter

DVM

Decade Box

Lead Simulator Resistors

(If required)

Test Output

Jumper Position

Burnout Protection 0002ACCA

Jumper Position -444

Power

Supply

Readout

Resistor

DVM

Alternate Readout 0215A -444

3-4

Calibration

CALIBRATING A THERMOCOUPLE TRANSMITTER

Using a

Compensated

Thermocouple

Simulator

Calibration Procedure

Calibration Equipment Required

Compensated Thermocouple Simulator. Precision voltage source providing conformity to NIST Monograph 125 thermocouple curves. Reflect accuracy of simulator to desired calibration span. A simulator accuracy four times better than the transmitter is recommended (0.05% of calibrated span or 0.005mV whichever is greater). Simulator inaccuracies greater than this will degrade system accuracy and factory calibration is recommended.

Voltmeter. Such as a 5-digit DVM. Accuracy is ±0.01%; resolution is 1 mV.

dc Power Supply. Power capability is 24 Vdc at 35 mA.

Thermocouple Wire.Use the same type as that used in the construction of the thermocouple.

Readout Resistor. The transmitter test terminals give a 40–200 mV signal. If this is not suitable for the test equipment available, a ±0.1% tolerance, 0.5 W precision wirewound resistor is needed. Suggested values include a 100-ohm resistor to give a 0.4 to 2 volt output; 250 ohms for 1 to 5 volts; or 500 ohms for 2 to 10 volts.

1.Remove the cover from the terminal side of the transmitter housing.

2.If a thermocouple is already connected, remove all thermocouple lead connections.

3.Connect the equipment as shown in Figure 3-4. Be sure to maintain polarity from the transmitter to the thermocouple simulator. Make terminal connections using miniature banana plugs.

4.If trimming the transmitter to a new range, you may have to reposition the Coarse Zero Jumper on the Range Board. If so, see the Disassembly Procedure on page 4-4. Position the jumper in the location shown in Table . (A transmitter with a base temperature outside the regions shown in Table is a special design and does not contain a Coarse Zero Jumper. Also, Model 444 TR and TS transmitters do not have Coarse Zero Jumpers.) Reassemble the circuit boards.

5.Determine the base and full scale temperatures.

6.Turn the power on.

7.Refer to the thermocouple simulator instructions for setting the thermocouple type and engineering units. Set the simulator to the base (zero) temperature and adjust the zero pot until the output is 4 mA (or 40 mV at the test terminals).

8.Set the simulator to the full scale temperature and adjust the span pot until the output is 20 mA (or 200 mV at the test terminals).

9.Repeat steps 7 and 8 until you obtain the 4 and 20 mA readings without readjusting the pots. Use the “overshoot” technique described in step 9 of the RTD calibration procedure, if desired.

10.Disconnect the simulator leads. Reconnect the thermocouple and power leads, if required. Replace the terminal side housing cover.

11.Mark the new range in the “Calibration” space on the nameplate.

3-5

Rosemount Model 444 Alphaline Temperature Transmitters

TABLE 3-2. Coarse Zero

Jumper Location, Model

444TJ, TK, TF, TT, and MV

Range Code 1.

Transmitter Base Region

 

Coarse Zero

 

 

 

 

°C

°F

mV

 

Jumper Location

 

 

 

 

 

 

 

–50 to 50

–58 to 122

-2 to 3

 

Z1

50 to 100

122 to 302

3 to 8

 

Z2

 

 

 

 

 

NOTE

Range Codes 2 and 3 are continuously adjustable over the range shown in Table 1. (No Coarse Zero Jumper)

FIGURE 3-3. Location of Burnout Protection Jumper on Model 444T Range Board.

Burnout R2, R3

Protection Resistors

FIGURE 3-4. Compensated

.

Thermocouple Simulator

 

Calibration Diagram.

 

 

 

 

 

 

 

 

+

 

Thermocouple

 

 

 

 

 

+

 

Wire

 

 

 

 

 

 

 

 

 

 

 

Readout Resistor

Thermocouple

+

+

 

 

 

 

 

 

 

 

 

 

 

 

Simulator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

Transmitter

DVM

(Alternate Readout)

444-0010ACCA

DVM

Power

Supply

444-0216A

3-6

Calibration

Using an Ice Bath

Calibration Equipment Required

Millivolt Source. Precision voltage source providing outputs from –10 to 100 mV. Reflect accuracy of four times better that the 444 transmitter is recommended (0.05% of calibrated span or 0.005 mV which ever is greater).

Voltmeter. Such as a 5-digit DVM. Accuracy is ±0.01%; resolution is 1 mV.

dc Power Supply. Power capability is 24 V dc at 35 mA.

Thermocouple Wire.Use the same type as that used in the construction of the thermocouple.

Readout Resistor. The transmitter test terminals give a 40–200 mV signal. If this is not suitable for the test equipment available, a ±0.1% tolerance, 0.5 W precision wirewound resistor is needed. Suggested values include a 100-ohm resistor to give a 0.4 to 2 volt output; 250 ohms for 1 to 5 volts; or 500 ohms for 2 to 10 volts.

Ice Bath. For highest accuracy, a stirred ice bath (such as a Rosemount 911A) should be used, as well as ice made from deionized or distilled water.

Input Monitor Voltmeter. Use to monitor source when required. Resolution of ±0.001 mV for ranges up to 100 mV. This can be the same as voltmeter used to measure transmitter output if rangeability and resolution are sufficient for both levels.

Calibration Procedure

1. Remove the cover from the terminal side of the transmitter housing.

 

2.

Install the equipment as shown in Figure 3-5 and allow the thermocouple

 

 

junctions to stabilize at the ice point. Make terminal connections with

 

 

miniature banana plugs.

 

3.

If trimming the transmitter to a new range, you may have to reposition the

 

 

Coarse Zero Jumper on the Range Board. If so, see the disassembly

 

 

procedure on page 4-4. Position the jumper in the location shown in Table .

 

 

(A transmitter with a base temperature outside the regions shown in Table

 

 

is a special design and does not contain a Coarse Zero Jumper. Also, Model

 

 

444 TR and TS transmitters do not have Coarse Zero Jumpers.)

 

4.

Determine the thermocouple millivolt levels at the desired base and full

 

 

scale temperatures. See NIST Monograph 125 or

 

 

Table B-1.

 

5.

Turn the power on.

 

6.

Set the millivolt source until the monitoring voltmeter reads the emf

 

 

corresponding to the desired base temperature. Adjust the zero pot until

 

 

the output is 4 mA.

 

7.

Set the millivolt source until the monitoring voltmeter reads the emf

 

 

corresponding to the desired full scale temperature. Adjust the span pot

 

 

until the output is 20 mA.

 

8.

Repeat steps 6 and 7 until you obtain the 4 and 20 mA readings without

 

 

readjusting the pots. Use the “overshoot” technique described in step 9 of

 

 

the RTD calibration procedure, if desired.

 

9.

Mark the correct range in the “calibration” space on the nameplate.

3-7

Rosemount Model 444 Alphaline Temperature Transmitters

FIGURE 3-5. Ice Bath

Calibration Diagram.

+

Input

DVM

Monitor

DVM

+

Thermocouple

Wire

+

Power

Supply

 

+

+

 

 

Millivolt

 

 

 

 

 

 

 

 

Source

+

 

DVM

(Alternate Readout)

Ice Bath

444-0217A

CALIBRATING A LOW-POWER TRANSMITTER

Calibration Equipment Required

Voltmeter. Such as a 5-digit DVM. Accuracy is ±0.01%; resolution is 1 mV.

dc Power Supply. Power capability is 5 V dc at 1.5 mA for Model 444LL and 8 V dc at 2 mA for Model 444LM.

Resistance Decade Box. Precision type, 5-dial, with largest dial providing 100ohm steps. Accuracy is ±0.02 ohm. The decade box should be periodically calibrated against a 5-dial Wheatstone bridge.

Lead Simulation Resistors. If the transmitter is to be mounted remote from the RTD, and the lead resistance between the transmitter and the RTD is greater than 2 ohms per lead (equivalent to 200 ft of 20 AWG wire), the transmitter should be trimmed with simulated lead resistances for best accuracy. This requires wirewound resistors with resistance values equal to the nominal lead resistance of the RTD.

Load Resistor. If the transmitter is to be operated with a load that is significantly different from the DVM used for calibration, a load resistor can be used for best calibration accuracy. A metal film, carbon comp, or wirewound resistor, as well as a decade box can be used to simulate the actual load.

3-8

Calibration

Calibration Procedure The following steps describe the procedure for calibrating a low-power transmitter, as shown in Figure 3-6:

1.Remove the cover from the terminal side of the transmitter housing.

2.If an RTD is already connected, remove all RTD lead connections.

3.Attach the calibration test equipment as shown in Figure 3-6. Make terminal connections using miniature banana plugs. Use simulated lead resistors only if necessitated by long lead wire lengths, as discussed above.

NOTE

If using RTD configurations other than the 3-wire design shown in Figure 3-2, refer to Figure 2-6 on page 2-6 for the correct wiring.

4.Determine the RTD resistance at the desired baseand full-scale temperatures. For Calibration Code 1 (see Table 5-5), obtain these resistances from Table B-1.

5.Turn the power on.

6.Set the decade box to the resistance corresponding to the desired base temperature. Adjust the zero potentiometer until the output is 0.8 V for Model 444LL or 1.0 V for Model 444LM.

7.Set the decade box to the resistance corresponding to the desired full-scale temperature. Adjust the span potentiometer until the output is 3.2 V for Model 444LL or 5.0 V for Model 444LM.

8.Repeat steps 6 and 7 until you obtain both the zeroand full-scale readings without adjusting the span and zero potentiometers. Complete this process more quickly by noting the full-scale reading before readjusting the span pot, using the span pot to overshoot the desired reading by 20%, and then using the zero pot to readjust the full scale reading.

9.Disconnect the decade box and the readout. Reconnect the RTD and power leads. Replace the terminal cover.

10.Mark the correct range in the “Calibration” space on the nameplate.

FIGURE 3-6. Low-Power

Transmitter Calibration

Diagram.

Load Resistors

444LL and LM Transmitter

(If required)

 

+

DVM

Decade Box

Lead Simulator ResistorsTransmitters are calibrated (If required)

at the factory with a 220 K V load.

+

dc Power Source

444-0218A

3-9

Rosemount Model 444 Alphaline Temperature Transmitters

CALIBRATING A MILLIVOLT TRANSMITTER

Calibration is identical to the thermocouple type (see Figure 3-5 on page 3-8), except that a reference junction and ice bath are not used. The millivolt source is connected directly to the transmitter input terminals with copper wire, and the desired millivolt levels are entered directly. See Table 3-2 for Coarse Zero Jumper locations.

3-10

Section

 

 

 

 

 

4

 

Maintenance and

 

 

 

Troubleshooting

OVERVIEW

 

This section contains the following transmitter maintenance and

 

 

 

troubleshooting information:

 

 

 

Hardware Diagnostics

 

 

 

• Troubleshooting

 

 

 

• Repair

 

 

 

Disassembly Procedure

 

 

 

Reassembly Procedure

 

 

 

Interchangeability of Parts

 

 

 

Burnout Protection Adjustments

 

 

 

• Repair and Warranty Service

 

 

 

• Return of Materials

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HARDWARE

DIAGNOSTICS

TROUBLESHOOTING

Use only the procedures and new parts specifically referenced in this manual. Unauthorized procedures or parts can affect product performance and the output signal used to control a process, and may render the instrument dangerous. Direct any questions concerning these procedures or parts to Rosemount Inc.

If you suspect a malfunction, refer to Table 4-1 to verify that transmitter hardware and process connections are in good working order. Under each of the seven major symptoms, you will find specific suggestions for solving the problem. Always deal with the most likely and easiest-to-check conditions first.

This section offers tips for troubleshooting several kinds of potential malfunctions. To determine a malfunction, use pin-like probes to break through the protective coating to make measurements on a circuit board.

4-1

Rosemount Model 444 Alphaline Temperature Transmitters

TABLE 4-1. Transmitter

Troubleshooting Symptoms

and Corrective Actions.

Symptom

Potential Source

Corrective Action

 

 

 

High Output

Sensor

Check for a sensor or thermocouple open circuit. (RL, MV, T-Series with upscale burnout protection only)

 

 

 

 

Loop Wiring

Check for dirty or defective terminals, interconnecting pins, or receptacles.

 

 

 

 

Electronics Assembly

Check for dirty or defective interconnecting pins.

 

 

 

Erratic Output

Loop Wiring

Check for adequate voltage to the transmitter.

 

 

Check for intermittent shorts, open circuits, and multiple grounds.

 

 

Check for dirty or defective terminals or interconnection pins.

 

 

 

 

Electronics Assembly

Check for dirty or defective interconnecting pins.

 

 

 

Low Output or

Sensor

Check RTD leads to ensure that they are not shorting together or to ground. (RL only)

No Output

 

Check for correct RTD lead connection. (RL only)

 

 

Check for open RTD lead on double-lead side. (RL only)

 

 

 

 

Loop Wiring

Check for adequate voltage to the transmitter. (RL only)

 

 

Check for intermittent shorts, open circuits, and multiple grounds. (MV, T series only)

 

 

Check for proper polarity at the signal terminal. (MV, T series only)

 

 

Check for dirty or defective terminals or interconnection pins.

 

 

 

Excessive

Loop Wiring

Check for short between current signal leads.

Current

 

Check to ensure that current signal leads ARE NOT connected to sensor terminals.

(over 30 mA)

 

Check that sensor leads ARE NOT grounded when positive side of power supply is grounded (RL,

 

 

RL___B0912, LL, and LM)

 

 

 

 

Electronics Assembly

Check for defective components in amplifier or current control section.

 

 

 

Excessive

Sensor

Check for incorrect thermocouple type or Incorrect thermocouple polarity connection (T series only)

Output Shift

 

 

Electronics Assembly

Check to ensure that the burnout -protection jumpers positioned correctly (MV, T series only).

with Ambient

 

Check for defective components in voltage regulator or dc-to-ac converter section (MV, T series only).

Temperature

 

 

Check for defective components in amplifier or current control section (all models).

 

 

 

 

May require replacement electronics assembly.

 

 

 

Unit Cannot be

Transmitter

Check to ensure that unit is capable of desired range.

Trimmed to

 

 

Electronics Assembly

Check to ensure that the range board jumper is in the correct position.

Desired Base

 

Check to ensure that the burnout -protection jumpers positioned correctly. (MV, T series only).

Temperature

 

 

Check for defective zero pot.

 

 

 

 

 

Unit Cannot be

Transmitter

Check to ensure that unit is capable of desired range.

Trimmed to

 

 

Loop Wiring

Check for adequate voltage to the transmitter.

Desired Span.

 

 

Electronics Assembly

Check for defective components in amplifier or current control section.

 

 

 

Check for defective components in voltage regulator section.

 

 

Check for defective span pot.

 

 

 

4-2

Maintenance and Troubleshooting

REPAIR

Exposure to hazardous substances can cause death or serious injury. If a hazardous substance is identified, a Material Safety Data Sheet (MSDS), required by law to be available to people exposed to specific hazardous substances, must be included with the returned materials.

In case of a failure, particularly one in which the transmitter’s output goes to one extreme and stays there, the first step is to determine whether the fault lies with the sensor(s) or the transmitter. Although only a careful calibration can determine sensor shifts, catastrophic failures (such as an open or shorted sensor element) can be checked with an ohmmeter at the time the transmitter is disconnected from the sensor(s).

NOTE

The Resistance vs. Temperature and Millivolt vs. Temperature tables for the standard Model 444 sensor input types are presented in Table B-1 in Appendix

B Temperature Sensor Reference Information.

RTD Test: A platinum RTD with an ice-point (°C) resistance of 100 ohms should read approximately as shown in Table B-1 at other temperatures. The resistance between the two leads on the same side of the sensing element should be low, a few ohms at most. Resistance between any of the RTD leads and the sensor sheath should be high

(1 megohm or greater).

Thermocouple Test: Thermocouple resistance should be low (10 ohms or less for short runs of heavy wire). For longer runs of extension wire, resistance will be roughly ten times the resistance of copper wire of the same diameter. If the sensor and receiving equipment are functioning properly, the transmitter will probably require repair.

The transmitter is designed for easy replacement of its plug-in, modular circuit boards. A malfunction can be most easily isolated by substituting boards one at a time until the unit functions properly.

It is recommended that customers return defective circuit boards to Rosemount Inc. for repair (see “RETURN OF MATERIALS” on page 4-6). This ensures that replacement parts meet the design criteria for the board and that the malfunctioning board is completely checked and repaired.

Rosemount Inc. offers a circuit board repair/replacement program through its many service centers. Please contact your Rosemount field sales office for price and delivery information.

4-3

Rosemount Model 444 Alphaline Temperature Transmitters

Disassembly

Procedure

Explosion can cause death or serious injury. Do not remove the instrument cover in explosive atmospheres when the circuit is alive.

High voltage that may be present on leads can cause electrical shock. Make sure all power to the transmitter is off before wiring.

NOTE

The numbers in parentheses refer to parts shown in the Illustrated Parts List,

Table 5-7, in Section 5 Specifications and Reference Data.

1.Terminal blocks for making all field wiring electrical connections are located in a compartment identified as “Terminal Side” on the nameplate. The sensor terminals, power supply and signal-test terminals, as well as the zero and span adjustments are accessible by removing the Electronics Housing Cover (2) from the terminal side. The terminals are permanently attached to the housing and must not be removed.

2.The transmitter electronics Circuit Board Assembly (5, 6, 7) is located in a separate compartment, identified as “Circuit Side” on the nameplate. Make sure power is off. Then remove Circuit Side Cover (2).

NOTE

On the standard RTD input (Model 444RL), fast turn-on (Model 444RL

___B0912), and low-power (Models 444LL and LM) units, boards 5 and 6 are integrated into one board.

3.Remove the three Circuit Board Assembly Screws (4).

4.Push equally on the zero and span adjustment pot shafts from the terminal side. This will allow you to grasp and remove the Circuit Board Assembly.

5.If troubleshooting is required, it is best to keep the Circuit Board Assembly together for initial evaluation. Otherwise, the board assembly may be disassembled by grasping the Output Board (5) around its circumference and pulling it gently and evenly away from the other two boards. Remove the Amplifier Board (6) in the same manner. Take care not to bend the interconnection pins.

6.The adjustment pot shafts are sealed by two small O-rings (1D). Remove, if necessary, by taking off the O-ring Retainer Plate (1B), which is held in place by two small screws (1C).

7.The Nameplate (1E), Hazardous Service Certification Label (9), and Instrument Tag (8) are held in place with Drive Screws (1F). Remove any of these by gripping the head of the Drive Screw with pliers and carefully turning counter-clockwise.

4-4

Maintenance and Troubleshooting

Reassembly

Procedure

Explosions can cause death or serious injury. Both transmitter covers must be fully engaged to meet explosionproof requirements.

1.Inspect all O-rings (1D,3) and replace if necessary. Lightly grease new O- rings with silicone grease to guarantee an adequate seal.

2.If the O-ring Retainer Plate (1B) has been removed, be sure the correct side is facing outward. The resistor symbol should be visible on RTD Transmitters, while a thermocouple symbol should be visible on Thermocouple or Millivolt transmitters.

3.Inspect threaded connections on the housing and covers to make sure a minimum of five undamaged threads will be fully engaged. If the threads are shiny, apply a thin layer of molybdenum disulphide thread coating (such as Moly-Kote) to prevent galling of the aluminum threads.

4.If the Range Board (7A) requires a Coarse Zero Jumper (7B) check to make sure it is in the correct location for the desired temperature range. See Table 3-1, on page 3-3 or Table 3-2, on page 3-6.

5.Orient the Range Board (7A) and Amplifier Board (6) as shown in the Illustrated Parts List. Taking care not to bend the pins, plug the Amplifier Board into the Range Board. Press together until all three standoffs on the Amplifier Board rest against the Range Board.

6.Orient the Output Board (5) so its standoffs line up with the standoffs of the Amplifier/Range Board combination. Carefully and evenly, plug the output board into the Amplifier/Range Board. Take care not to bend the pins. Press together until all three standoffs on the Output Board rest against the Amplifier Board.

7.The circuit board assembly may be bench-tested, or calibrated outside the housing through the use of Test Terminal Strips (11 and 12). See the discussion of Calibration and Troubleshooting in this section.

8.If the circuit board assembly has been calibrated outside the housing, be very careful to ensure the zero and span adjustment pots are not moved while inserting the circuit board assembly into the housing.

9.Orient the circuit board assembly so the pot shafts line up with the pot holes in the housing.

10.Insert the circuit board assembly firmly into the housing.

11.Replace the three Circuit Board Assembly Screws (4).

12.Replace the transmitter covers (2). Tighten the covers hand-tight.

Interchangeability

of Parts

Use only the procedures and new parts specifically referenced in this manual. Unauthorized procedures or parts can affect product performance and the output signal used to control a process, and may render the instrument dangerous. Direct any questions concerning these procedures or parts to Rosemount Inc.

4-5

Rosemount Model 444 Alphaline Temperature Transmitters

Mechanical Parts • All mechanical hardware is interchangeable among units without regard to model numbers.

 

• Nameplates are interchangeable only among units that share the same

 

input types (i.e. RTD, Thermocouple, or Millivolt).

Electrical Parts

• Amplifier Board: Interchangeable among Models 444T and 444M.

 

• Output Board: 444T series (TE, TJ, TK, TT, TR, TS) and 444MV share a

 

common output board.

 

• Range Board: Interchangeable among units of the same input code (e.g.,

 

444RL1).

Burnout Protection

The Model 444T series (TE, TJ, TK, TT, TR, TS) and Model 444MV have a

Adjustments

resistor network that drives the output either upscale or downscale if an open

 

occurs in the input circuit. This option is identified in the model number. To

 

convert from upscale to downscale, disassemble the circuit board assembly and

 

remove R3 (22 meg, ¼WCC resistor) from the range board. To convert from

 

downscale to upscale, replace R3. If no burnout protection is desired (as in some

 

instances where the source has a high input impedance), remove both R2 and

 

R3. See Figure 3-3, on page 3-6.

 

Model 444RL has a jumper on the range board to select burnout protection.

 

Placing the jumper in the “U” position will cause the output to be driven upscale

 

if the RTD opens. If the jumper is in the “D” position the output will be driven

 

downscale. See Figure 3-1, on page 3-3. Models 444LL and 444LM have inherent

 

upscale burnout protection that cannot be changed. Model 444RL also has a

 

jumper on the range board to specify mA output at the transmitter test

 

terminals. Setting the jumper at the “V” position produces a 40–200 mV output

 

at the test terminals. Setting the jumper at the “A” position produces a

 

4–20 mA output at the test terminals. See Figure 3-1, on page 3-4.

REPAIR AND

Repair and warranty service is available through the Rosemount Regional

WARRANTY

Service Centers. Submit damage claims directly to the carrier.

 

 

 

SERVICE

 

 

 

RETURN OF

 

 

 

MATERIALS

 

 

 

 

 

 

 

 

 

 

 

 

 

Exposure to hazardous substances can cause death or

 

 

 

serious injury. If a hazardous substance is identified, a

 

 

 

Material Safety Data Sheet (MSDS), required by law to be

 

 

 

available to people exposed to specific hazardous

 

 

 

substances, must be included with the returned materials.

 

 

 

 

 

 

To expedite the return process, call the Rosemount North American Response

 

Center toll-free at 800-654-RSMT (7768). This center, available 24 hours a day,

 

will assist you with any needed information or materials.

 

The center will ask for product model and serial numbers, and will provide a

 

Return Material Authorization (RMA) number. The center will also ask for the

 

name of the process material the product was last exposed to.

 

The Rosemount North American Response Center will detail the additional

 

information and procedures necessary to return goods exposed to hazardous

 

substances.

4-6

Section

 

 

 

 

5

Specifications

 

 

and Reference Data

FUNCTIONAL

Inputs

 

SPECIFICATIONS

Models 444RL, LL, and LM

 

 

100 V R0 platinum RTD per IEC 751.

 

 

Model 444T

 

 

 

Thermocouple types E,J,K,T,R, and S per NIST (grounded or

 

 

ungrounded).

 

 

 

Model 444MV

 

 

 

Millivolt input (grounded or ungrounded) source impedance less than

 

 

100 V.

 

 

 

R-numbers, specials

 

 

Special inputs other than standards, consult factory.

 

 

Spans

 

 

 

RTD

 

 

 

Platinum

45 to 135 °F (25 to75 °C).

 

 

 

125 to 380 °F (70 to 210 °C).

 

 

 

360 to 1080 °F (200 to 600 °C).

 

 

Copper

180 to 540 °F (100 to 300 °C).

 

 

Nickel

45 to 360 °F (25 to 200 °C).

Thermocouples

Type J, K, E, T 180 to 540 °F (100 to 300 °C).

Type J

504 to 1458

°F (280 to 810 °C).

Type K, E

504 to 1510

°F (280 to 840 °C).

Type K

845 to 2540

°F (470 to 1410 °C).

Type R, S

1467 to 3000 °F (815 to 1670 °C).

Millivolt

5 to 15 mV.

15 to 45 mV.

Outputs

Linear with temperature for RTD inputs.

Linear with millivolt input signal for thermocouple or millivolt inputs; thermocouple and millivolt models input/output isolated to 500 V dc.

Models 444RL, T, MV

4–20 mA.

Model 444LL

0.8–3.2 V dc.

Model 444LM

1.0–5.0 V dc.

5-1

Rosemount Model 444 Alphaline Temperature Transmitters

Output Limits (approximate)

Models 444RL, T, MV

Low: 3.9 mA dc.

High: 30.0 mA dc.

Model 444LL

Low: 0.1 V dc.

High: 4.2 V dc.

Model 444LM

Low: 0.125 V dc.

High: 6.2 V dc.

Power Supply

Models 444RL, T, and MV

12 to 45 V dc at terminals of transmitter.

Model 444LL

5 to 12 V dc (overvoltage protected to 24 V dc) max current = 1.5 mA.

Model 444LM

8 to 12 V dc (overvoltage protected to 24 V dc) max current = 2.0 mA.

Load Limits

Models 444RL, T, and MV

4–20 mA.

 

1650

Load(Ohms)

1500

500

 

1000

4–20 mA dc

Voltage

Too Low

Operating

Region

0

12

20

30

40

Power Supply (V dc)

Maximum Load = 50 3 (Supply Voltage – 12)

Span and Zero

Continuously adjustable, as defined in the ordering table. Adjustments are accessible from the terminal side of the transmitter housing.

Transmitter Temperature Limits

–13 to 185 °F (–25 °C to 85 °C), transmitter operates within specifications.

–40 to 212 °F (–40 °C to 100 °C), transmitter operates without damage.

–58 to 248 °F (–50 °C to 120 °C), storage.

–13 to 149 °F (–25 °C to 65 °C), transmitter operates within specifications for meter option.

Loss of Input

Upscale burnout indication standard for RTD inputs, downscale burnout indication optional. Upscale burnout indication standard for thermocouple and millivolt inputs; downscale burnout indication or no indication optional.

Turn-on Time

2 seconds. No warm-up required.

5-2

 

Specifications and Reference Data

PERFORMANCE

Accuracy

SPECIFICATIONS

±0.2% of calibrated span (or, for thermocouple and millivolt inputs, ±0.02

 

millivolts, whichever is greater). ±0.5% for copper, nickel, and isolated RTD

 

inputs, 0.1% for differential RTD inputs. Includes combined effects of

 

transmitter repeatability, hysteresis, linearity (conformity instead of linearity

 

for thermocouple input), and adjustment resolution. Does not include sensor

 

error.

 

Stability

 

±0.2% of calibrated span for six months.

 

Ambient Temperature Effect

 

Errors for 50 °F (28 °C) change in ambient temperature.

 

RTD Inputs

 

Zero: ±0.17 °C,

 

plus

 

Span: ±0.22%,

 

plus

 

Elevation/Suppression: ±0.083% of base temperature in °C.

 

T/C Inputs (Includes Effect of Cold Junction)

 

Zero: ±1.38 °C,

 

plus

 

Span: ±0.28% of span,

 

plus

 

Elevation/Suppression: ±0.11% of base

 

temperature in °C.

 

Millivolt Inputs

 

Zero: ±0.038 mV,

 

plus

 

Span: ±0.28% of span,

 

plus

 

Elevation/Suppression: ±0.11% of base input in mV.

 

Input Impedance (Thermocouple and mV Inputs)

 

More than 1 megohm—burnout resistors disconnected.

 

Power Supply Effect

 

±0.005% per volt.

 

Load Effect

 

No load effect other than the change in voltage supplied to the transmitter.

 

Vibration Effect

 

±0.05% of span per g to 200 Hz in any axis for 3 g’s up to 33 Hz, 2 g’s from 33 to

 

70 Hz and 1 g from 70 to 200 Hz.

 

Mounting Position Effect

 

None.

5-3

Rosemount Model 444 Alphaline Temperature Transmitters

PHYSICAL SPECIFICATIONS

TABLE 5-1. FM Entity

Parameters.

Materials of Construction

Electronics Housing

Low-copper aluminum. (NEMA 4X). IP 54, IP 65, IP 66.

Housing Paint

Polyurethane.

Housing O-rings

Buna-N.

Sensor and Conduit Connections

1/2-inch conduit on electronics housing. Screw terminals and integral test jacks compatible with miniature banana plugs (Pomona 2944, 3690 or equal).

Weight

Transmitter: 3 lb (1.4 kg).

Transmitter with mounting bracket: 4 lb (1.8 kg).

Hazardous Location Certifications

Factory Mutual (FM) Approvals

E5 Explosion Proof: Class I, Division 1, Groups B, C, and D. Dust Ignition Proof: Class II, Division 1, Groups E, F, and G; Class III, Division 1 hazardous locations. Indoor and outdoor use. NEMA Enclosure Type 4X.

Refer to Factory Mutual Explosion Proof Drawing 00444-0261.

I5 Intrinsic Safety: Class I, Division 1, Groups A, B, C, and D; Class II, Division 1, Groups E, F, and G; Class III, Division 1 hazardous locations; Intrinsically safe system only when applying Table 5-1 entity parameters. Nonincendive: Class I, Division 2, Groups A, B, C, and D; Indoor and outdoor use. NEMA Enclosure Type 4X.

Refer to Factory Mutual Intrinsic Safety Drawing 01151-0214.

K5 Combination of E5 and I5.

 

Associated

 

 

FM Approved for

 

Model 444

 

 

Class I, II, III,

 

Equipment

 

Division 1, Groups

 

Parameters

 

 

Parameters

 

 

 

 

 

 

 

 

 

 

A

 

 

B

 

C thru G

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VMAX = 40 V

VOC or VT 40 V

 

 

 

 

 

IMAX = 165 mA

ISC or IT 165 mA

 

 

 

 

 

 

 

 

Ci = 0.044µF

CA > 0.044µF

 

 

 

 

 

 

 

 

Li = 0

LA > 0

 

 

 

 

 

 

 

 

VMAX = 40 V

VOC or VT 40 V

 

NA

 

 

NA

 

 

IMAX = 225 mA

ISC or IT 225 mA

 

 

 

 

 

 

 

 

Ci = 0.044µF

CA > 0.044µF

 

 

 

 

 

 

 

 

Li = 0

LA > 0

 

 

 

 

 

 

 

 

Canadian Standards Association (CSA) Approvals

E6 Explosion Proof: Class I, Division 1, Groups C and D; Dust-ignitionproof Class II, Division 1, Groups E, F, and G; Class III, Division 1 hazardous locations; Suitable for Class I, Division 2, Groups A, B, C, and D; CSA Enclosure Type 4X.

I6 Intrinsic Safety: Class I, Division 1, Groups A, B, C, and D. Intrinsically safe system only when applying Table 5-2 parametric parameters. Temperature code T2D. CSA Enclosure Type 4X.

Refer to CSA Intrinsic Safety Drawing 00444-0034.

C6 Combination of E6 and I6.

5-4

Specifications and Reference Data

TABLE 5-2. CSA Parametric

Parameters.

 

 

 

CSA Approved for

 

Barrier Manufacturer/Model

 

 

 

 

Class I,

 

 

 

Division 1 Groups

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

B

 

C

 

 

D

 

 

 

 

 

 

 

 

 

 

 

Any CSA approved zener barrier

 

 

 

 

 

 

£30 V, ³330 V or

 

 

 

 

 

 

 

 

 

 

£28 V, ³300 V or

 

 

 

 

 

 

 

 

 

 

£22 V, ³180 V

 

 

 

 

 

 

 

 

 

 

Foxboro Converters

 

NA

 

 

 

 

 

2AI-I2V-CGB

 

 

 

 

 

 

 

 

 

 

2AI-I3V-CGB

 

 

 

 

 

 

 

 

 

 

2AS-I2I-CGB

 

 

 

 

 

 

 

 

 

 

2AS-I3I-CGB

 

 

 

 

 

 

 

 

 

 

3AD-I3IA CS-E/CGB-A

 

 

 

 

 

 

 

 

 

 

3A2-I2D CS-E/CGB-A,

 

 

 

 

 

 

 

 

 

 

3A2-I3D CS-E/CGB-A

 

 

 

 

 

 

 

 

 

 

3A4-I2DA CS-E/CGB-A

 

 

 

 

 

 

 

 

 

 

3F4-I2DA1 CS-E/CGB-A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Any CSA approved zener barrier

 

NA

 

 

NA

 

 

 

£30 V, ³150V

 

 

 

 

 

 

 

 

 

 

Standards Association of Australia (SAA) Certifications

E7 Flameproof:

Ex d IIB+H2 T6

Class I, Zone 1.

DIP T6

Class II.

Special Conditions for Safe Use (“X”):

For transmitters having NPT or PG cable entry thread, an appropriate flameproof thread adaptor shall be used to facilitate application of certified flameproof cable glands. Only SAA-certified flameproof temperature sensors shall be used with the Model 444 Temperature Transmitter if fitted directly into the tapped entry of the enclosure.

I7 Intrinsic Safety:

Ex ia IIC T6 (Tamb = 40 °C)

Ex ia IIC T5 (Tamb = 70 °C)

Class I, Zone 0

Entity Parameters:

Ui = 30 V

Ii = 200 mA

Pi = 1.0 W

Ci = 0.024 mF

Li = 0

Refer to SAA Intrinsic Safety Drawing 00444-0264.

Special Conditions for Safe Use (“X”):

The equipment has been assessed to the “Entity” concept and upon installation the barrier/entity parameters must be taken into account.

N7 Type “n”:

Ex n IIC T6 (Tamb = 40 °C)

Ex n IIC T5 (Tamb = 70 °C)

Class I, Zone 2

Special Conditions for Safe Use (“X”):

The equipment must be connected to a supply voltage which does not exceed the rated voltage. The enclosure end caps must be correctly fitted while the equipment is powered.

5-5

Rosemount Model 444 Alphaline Temperature Transmitters

Centro Elettrotecnico Sperimentale Italiano (CESI/CENELEC) Certifications

E8 Flameproof:

EEx d IIC T6

I8 Intrinsic Safety:

Model 444RL

EEx ia IIC T6 (Tamb = 40 °C) [Pi = 0.75 W] EEx ia IIC T5 (Tamb = 55 °C) [Pi = 1.0 W] EEx ia IIC T4 (Tamb = 80 °C) [Pi = 1.0 W]

Model 444T_ & MV

EEx ib IIB T6 (Tamb = 40 °C) [Pi = 0.75 W] EEx ib IIB T5 (Tamb = 55 °C) [Pi = 1.0 W] EEx ib IIB T4 (Tamb = 80 °C) [Pi = 1.0 W]

Entity Parameters:

Vi = 30 V dc Ii = 200 mA

Pi = 0.75 W (T6) Pi = 1.0 W (T5)

Pi = 1.0 W (T4)

Ci = 0.024 mF (Model 444RL)

Ci = 0.006 mF (Model 444T_ & MV) Li = 0.

Special Conditions for Safe Use (“X”):

If the temperature sensor connected to the input circuit does not tolerate an alternating tension of 500V for 60 seconds, the certified transducers must be powered by galvanically-insulated equipment. Model 444RL temperature transducers must be connected to associated electronic equipment certified to EN 50.014/EN 50.020 standards.

British Approvals Service for Electrical Equipment Flammable Atmospheres (BASEEFA) Type N Certification

N1 Ex N II T5

Maximum Voltage: 35 V dc Maximum Current: 30 mA dc

An appropriate stainless steel tag will be supplied according to the certification option selected.

5-6

Specifications and Reference Data

LCD METER SPECIFICATIONS (OPTIONS D AND E)

Functional

Specifications

Configuration

4 mA point limits: –999 to 1000.

Span limits: 0200 to 9999.

The sum of the 4 mA point and span must not exceed 9999. Adjustments are made using non-interactive zero and span buttons.

Temperature Limits

Storage: –40 to 85 °C (–40 to 185 °F).

Operating: –20 to 70 °C (–4 to 158 °F).

Between –40 to –20 °C (–40 to –4 °F) loop is intact and the meter is not damaged.

Humidity Limitation

0 to 95% non-condensing relative humidity.

Update Period

750 ms.

Response Time

Responds to changes in input within a maximum of two update periods. If the filter is activated, then the display responds to the change within nine update periods.

Performance

Digital Display Resolution

Specifications

0.05% of calibrated range ±1 digit.

 

Analog Bar Graph Resolution

 

0.05% of calibrated range.

 

Indication Accuracy

 

0.25% of calibrated range ±1 digit.

 

Stability

 

Over Time: 0.1% of calibrated range ±1 digit per six months.

 

Temperature Effect

 

0.01% of calibrated range per °C on zero.

 

0.02% of calibrated range per °C on span over the operating temperature range.

 

Power Interrupt

 

All calibration constants are stored in EEPROM memory and are not affected by

 

power loss.

 

Failure Mode

 

LCD meter failure will not affect transmitter operation.

 

Under/Over Range Indication

 

Input current < 3.5 mA: Display blank.

 

Input current > 22.0 mA: Display flashes 112.5% of full scale value or 9999,

 

whichever is less.

Physical

Meter Size

Specification

2¼-inch diameter face with four, ½-inch high characters.

5-7

Rosemount Model 444 Alphaline Temperature Transmitters

ANALOG METER SPECIFICATIONS (OPTIONS B AND C)

Functional

Specifications

Performance

Specifications

Meter Indication

0 to 100% linear scale.

Special optional ranges.

Temperature Limits

–40 to 65 °C (–40 to 150 °F).

Humidity Limits

0 to 100% relative humidity.

Zero Adjustment

Adjustment screw on face of meter.

Indication Accuracy

±2% of calibrated span.

Temperature Effect

Less than 2% of full scale at any point within the temperature limits.

Physical

Meter Size

Specification

2¼-inch diameter face with 2-inch long scale.

5-8

 

 

 

 

 

 

 

 

Specifications and Reference Data

TABLE 5-3.

444 Model Structure.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

Product Description

 

 

 

 

 

 

 

 

 

 

 

 

 

444

 

Alphaline Temperature Transmitter

 

 

 

 

 

 

 

 

 

 

 

 

 

Code

 

Input Type(1)

 

Temperature Span

 

Base Temperature

Upper Range Limit

 

 

Minimum

Maximum

 

Minimum

Maximum

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RL1

 

Platinum RTD

 

45 °F (25 °C)

135 °F (75 °C)

 

–58 °F (–50 °C)

300 °F (150 °C)

435 °F (225 °C)

RL2

 

100 V R0

 

125 °F (70 °C)

380 °F (210 °C)

 

–58 °F (–50 °C)

300 °F (150 °C)

680 °F (360 °C)

RL3

 

linearized output

 

360 °F (200 °C)

1080 °F (600 °C)

 

–58 °F (–50 °C)

300 °F (150 °C)

1380 °F (750 °C)

 

 

 

 

 

 

 

 

RL9

 

Special Input, Range or Accuracy (minimum span 3 V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermocouple

 

 

 

 

 

 

 

TJ1

 

Type J

 

180 °F (100 °C)

540 °F (300 °C)

 

–58 °F (–50 °C)

300 °F (150 °C)

840 °F (450 °C)

TJ2

 

Type J

 

504 °F (280 °C)

1458 °F (810 °C)

 

–58 °F (–50 °C)

930 °F (500 °C)

1400 °F (760 °C)

TK1

 

Type K

 

180 °F (100 °C)

540 °F (300 °C)

 

–58 °F (–50 °C)

300 °F (150 °C)

840 °F (450 °C)

TK2

 

Type K

 

504 °F (280 °C)

1510 °F (840 °C)

 

–58 °F (–50 °C)

930 °F (500 °C)

2440 °F (1340 °C)

TK3

 

Type K

 

845 °F (470 °C)

2540 °F (1410 °C)

 

–58 °F (–50 °C)

930 °F (500 °C)

2500 °F (1370 °C)

TE1

 

Type E

 

180 °F (100 °C)

540 °F (300 °C)

 

–58 °F (–50 °C)

300 °F (150 °C)

840 °F (450 °C)

TE2

 

Type E

 

504 °F (280 °C)

1510 °F (840 °C)

 

–58 °F (–50 °C)

930 °F (500 °C)

1830 °F (1000 °C)

TT1

 

Type T

 

180 °F (100 °C)

540 °F (300 °C)

 

–58 °F (–50 °C)

300 °F (150 °C)

750 °F (400 °C)

TR1

 

Type R

 

1467 °F (815 °C)

3000 °F (1670 °C)

 

0 °F (–18 °C)

1500 °F (815 °C)

3200 °F (1760 °C)

TS1

 

Type S

 

1467 °F (815 °C)

3000 °F (1670 °C)

 

0 °F (–18 °C)

1500 °F (815 °C)

3200 °F (1760 °C)

 

 

 

 

 

 

 

 

T_9

 

Special Range or Accuracy (minimum span 3 mV, maximum span 100 mV)

 

 

 

 

 

 

 

 

 

 

 

 

MV1

 

Millivolt

 

5 mV

15 mV

 

–2 mV

8 mV

23 mV

MV2

 

Millivolt

 

15 mV

45 mV

 

–2 mV

20mV

65 mV

 

 

 

 

 

 

 

 

MV9

 

Special Range or Accuracy (minimum span 3 mV, maximum span 100 mV)

 

 

 

 

 

 

 

 

 

 

 

Code

 

Loss of Input Indication

 

 

 

 

 

 

 

 

 

 

 

 

 

U

 

Upscale (standard for all input types)

 

 

 

 

 

D

 

Downscale

 

 

 

 

 

 

 

N

 

None (not available for platinum RTD inputs)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Code

 

Calibration

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

Trim to IEC 751 Class B (RTD) or NIST Curve (thermocouple)

 

 

 

2

 

Trim to Specific Model 68/78/88 Calibration Schedule

 

 

 

3

 

Trim to Other Nominal Curve (customer must specify separately) (Note: Millivolt input must use Code 3.)

 

 

 

 

 

 

 

 

 

 

 

Code

 

Meter Options

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

None

 

 

 

 

 

 

 

B

 

Integral Analog Meter, Special Scale (same as calibrated range)

 

 

 

C

 

Integral Analog Meter, 0–100% Scale

 

 

 

 

 

D

 

Integral LCD Meter, 0–100% Scale(2)

 

 

 

 

 

E

 

Integral LCD Meter, Special Scale (specify range, mode, and engineering units)(1)

 

 

Code

 

Mounting Bracket

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

None

 

 

 

 

 

 

 

2

 

Mounting Bracket for 2-inch Pipe or Surface Mounting

 

 

 

 

 

 

 

 

 

 

 

Code

 

Hazardous Area Certifications

 

 

 

 

 

 

 

 

 

 

 

 

 

NA

 

No Certification Required

 

 

 

 

 

E5

 

FM Explosion-Proof Approval

 

 

 

 

 

I5

 

FM Intrinsic Safety and Non-incendive Approval

 

 

 

 

 

E6

 

CSA Explosion-Proof Approval

 

 

 

 

 

I6

 

CSA Intrinsic Safety Approval (444RL and 444T only)

 

 

 

E7

 

SAA Explosion-Proof Certification

 

 

 

 

 

I7

 

SAA Intrinsic Safety Certification

 

 

 

 

 

N7

 

SAA Non-incendive Certification

 

 

 

 

 

E8

 

CESI Explosion-Proof Certification (When ordering a transmitter with this option, place a W before the model number: W444.)

I8

 

CESI Intrinsic Safety Certification (When ordering a transmitter with this option, place a W before the model number: W444.)

N1

 

BASEEFA Non-incendive Certification (When ordering a transmitter with this option, place a T before the model number: T444.)

 

 

 

 

 

 

 

 

 

 

Code

 

Options

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q4

 

2-Point Calibration Certificate

 

 

 

 

 

A1

 

One (1) ½ NPT to M20 (CM 20) SST Thread Adapter

 

 

 

A2

 

One (1) ½ NPT to M20 (CM 20) SST Thread Adapter

 

 

 

 

 

 

 

 

 

 

 

 

 

Code

 

Special

 

 

 

 

 

 

 

 

 

 

 

 

 

RXXXX

 

Unique Range (use with RL9, T_9, and MV9 inputs)

 

 

 

 

 

 

 

 

 

 

Typical Model Number:

0444 RL3 U 1 A 2

E5 Q4

 

 

 

 

 

 

 

 

 

 

 

 

 

(1)Refer to Temperature Sensors, Assemblies , and Accessories Product Data Sheet, Rosemount pub. no. 00813-0100-2654 for information about Rosemount sensor assemblies.

(2)LCD Meters are only available with RL1, RL2, or RL3. (may be reconfigured in the field.)

5-9

Rosemount Model 444 Alphaline Temperature Transmitters

TABLE 5-4. 444RL Fast Turn-on Model Structure.

Model

Product Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

444

Alphaline Fast Turn-On Temperature Transmitter

 

 

 

 

 

 

 

 

 

Code

Input Type(1)

 

Temperature Span

Base Temperature (4mA Point)

Upper Range

 

Minimum

Maximum

Minimum

Maximum

Limit

 

 

 

 

 

 

 

 

 

 

 

 

Platinum RTD

 

 

 

 

 

 

RL1

100 V R0

 

45 °F (25 °C)

135 °F (75 °C)

–58 °F (–50 °C)

300 °F (150 °C)

435 °F (225 °C)

RL2

linearized output

 

125 °F (70 °C)

380 °F (210 °C)

–58 °F (–50 °C)

300 °F (150 °C)

680 °F (360 °C)

RL3

linearized output

 

360 °F (200 °C)

1080 °F (600 °C)

–58 °F (–50 °C)

300 °F (150 °C)

1380 °F (750 °C)

 

 

 

 

 

 

 

Code

Loss of Input Indication

 

 

 

 

 

 

 

 

 

 

U

Upscale (standard for all input types)

 

 

 

 

 

 

 

 

 

 

 

 

Code

Calibration

 

 

 

 

 

 

 

 

 

 

 

 

1

Trim to IEC 751 Curve (RTD)

 

 

 

 

2

Trim to Specific Model 68/78/88 Calibration Schedule

 

 

 

3

Trim to Other Nominal Curve (customer must specify separately)

 

 

 

 

 

 

 

 

 

 

 

Code

Meter Options

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

None

 

 

 

 

 

 

B

Integral Analog Meter, Special Scale (must specify range, mode, and engineering units)

 

 

C

Integral Analog Meter, 0–100% Scale

 

 

 

 

 

 

 

 

 

 

 

Code

Mounting Bracket

 

 

 

 

 

 

 

 

 

 

 

 

 

1

None

 

 

 

 

 

 

2

Mounting Bracket for 2-inch Pipe or Surface Mounting

 

 

 

 

 

 

 

 

 

Code

Hazardous Area Certifications

 

 

 

 

 

 

 

 

 

 

 

NA

No Certification Required

 

 

 

 

 

E5

FM Explosion-Proof Approval

 

 

 

 

E6

CSA Explosion-Proof Approval

 

 

 

 

I6

CSA Intrinsic Safety Approval

 

 

 

 

 

 

 

 

 

 

 

 

Code

Options

 

 

 

 

 

 

 

 

 

 

 

 

Q4

2-Point Calibration Certificate

 

 

 

 

A1

One (1) ½ NPT to M20 (CM 20) SST Thread Adapter

 

 

 

A2

One (1) ½ NPT to M20 (CM 20) SST Thread Adapter

 

 

 

 

 

 

 

 

 

 

 

Code

Special

 

 

 

 

 

 

 

 

 

 

 

 

 

B0912

Fast Turn-on Electronics

 

 

 

 

 

 

 

 

 

 

 

 

 

Typical Model Number:

0444

RL3 U 1 A

2 NA B0912

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(1)Refer to Temperature Sensors, Assemblies , and Accessories Product Data Sheet, Rosemount pub. no. 00813-0100-2654 for information about Rosemount sensor assemblies.

5-10

 

 

 

 

 

Specifications and Reference Data

TABLE 5-5. 444LL, LM Model Structure.

 

 

 

 

 

 

 

 

 

 

 

Model

Product Description

 

 

 

 

 

 

 

 

 

 

 

444

Alphaline Low-Power Temperature Transmitter

 

 

 

 

 

 

 

 

 

 

Code

Input Type(1)

 

 

Temperature Span

Base Temperature (4mA Point)

 

 

Minimum

Maximum

Minimum

Maximum

 

 

 

 

 

 

 

 

 

 

 

 

 

Platinum RTD

 

 

 

 

 

 

LL1

100 V R0

 

 

75 °F (42 °C)

150 °F (83 °C)

–25 °F (–32 °C)

50 °F (10 °C)

LM1

Linearized Output

 

 

75 °F (42 °C)

150 °F (83 °C)

–25 °F (–32 °C)

50 °F (10 °C)

 

 

 

 

 

 

 

Code

Loss of Input Indication

 

 

 

 

 

 

 

 

 

 

 

 

U

Upscale

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Code

Calibration

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Trim to IEC 751 Curve (RTD)

 

 

 

 

2

Trim to Specific Model 68/78/88 Calibration Schedule

 

 

 

 

 

 

 

 

 

 

 

Code

Meter Options

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

None

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Code

Mounting Bracket

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

None

 

 

 

 

 

 

2

Mounting Bracket for 2-inch Pipe or Surface Mounting

 

 

 

 

 

 

 

 

 

 

 

Code

Options

 

 

 

 

 

 

 

 

 

 

 

 

 

NA

No Certification Required

 

 

 

 

E5

FM Explosion-Proof Approval

 

 

 

 

E6

CSA Explosion-Proof Approval

 

 

 

 

I6

CSA Intrinsic Safety Approval (444RL and 444T only)

 

 

 

 

 

 

 

 

 

 

Typical Model Number:

0444 LM1 U 1 A

2 E5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(1)Refer to Temperature Sensors, Assemblies , and Accessories Product Data Sheet, Rosemount pub. no. 00813-0100-2654 for information about Rosemount sensor assemblies.

TABLE 5-6. Meter Kits.

Part Description

Part Number

Spares Category(1)

40–200 mV Analog Meter Kit(2)

00444-0194-0001

C

40–200 mV Analog Meter Kit (CENELEC and I.S. approved) (2)

00444-0194-0005

C

40–200 mV Analog Meter

01151-0687-0003

C

40–200 mV Analog Meter (CENELEC approved)

01151-0744-0003

C

4–20 mA LCD Meter Kit (2) (3)

00444-0194-0004

C

4–20 mA LCD Meter

01151-1300-1000

C

Mounting Hardware and Cover Kit

00444-0194-0002

C

Mounting Hardware Kit

00444-0194-0003

C

Cover Assembly

01151-2610-0001

C

Meter with Special Scale(4)

scale: XX to XX

C

(1)Normally, no spare parts required for C classification.

(2)Meter kit includes meter, mounting hardware, and cover assembly.

(3)LCD Meters are only available with RL1, RL2, and RL3 (may be reconfigured in the field).

(4)For Special Scale Meters, order appropriate meter and indicate special scale desired. Mounting hardware and cover assembly must be ordered separately

5-11

Rosemount Model 444 Alphaline Temperature Transmitters

TABLE 5-7. Standard Parts List.

Item

Model

Part Description

 

 

Part Number

Spares

Number

 

 

Category(1)

 

 

 

 

 

1

444R

Housing Kit—RTD Input

 

 

00444-0028-0001

C

 

444T

Housing Kit—Thermocouple Input

 

 

00444-0028-0002

C

 

444M

Housing kit—Millivolt Input

 

 

00444-0028-0003

C

 

 

Electronics housing kit consists of:

 

 

 

 

 

 

 

1A

 

 

 

 

1 each electronics housing (item j)

 

 

 

 

1 each O-ring retainer plate

 

1B

 

 

 

 

3

(item j)

 

 

 

 

 

1C

 

 

 

 

2 each 6–32 3 /16 retainer plate screws (item j)

 

 

 

 

1D

 

 

 

 

 

 

2 each pot O-rings (item j)

 

 

 

 

 

1E

 

 

 

 

 

 

1 each nameplate (item j)

 

 

 

 

 

 

3

 

1F

 

 

 

 

2 each #4–40 3 /16 screws (item j)

 

 

2

ALL

Housing Cover—Quantity One

 

 

90032-0240-0003

C

j

 

 

3

ALL

Housing Cover O-ring

 

 

01151-0033-0003

C

j

 

 

1D

ALL

Adjustment Potentiometer O-ring (pkg. of 12)

00444-0030-0001

B

j

4

 

 

 

7

 

 

ALL

Electronics Assembly Screws, 6–32 31 /8 (pkg. of 12)

00444-0031-0001

C

j

3

ALL

Cover O-rings. (pkg. of 12)

 

 

00444-0030-0001

B

j

 

 

5

ALL

A/O Board—RTD Input (2 board set, Figure 5-1)

00444-0228-0001

A

j

 

 

Output Board—T/C, mV Input (3 board set, Figure 5-2)

00444-0015-0001

A

 

 

 

 

 

 

 

6

ALL

Amplifier Board—All Inputs (3 board set, Figure 5-2)

00444-0007-0003

A

j

j7A

444R

Range Board—RTD Inputs

 

 

 

 

 

 

25 to 75 °C Span (Input Code RL1)

00444-0221-0001

A

 

 

70 to 210 °C Span (Input Code RL2)

00444-0221-0002

A

 

 

200 to 600 °C Span (Input Code RL3)

00444-0221-0003

A

 

 

Special Range RL9 (requires 3 board set – consult factory)

00444-0003-XXXX

A

 

 

 

 

 

 

j7A

444T

Range Board—Thermocouple Inputs

 

 

 

 

 

Type J, 100 to 300 °C Span (Input Code TJ1)

00444-0262-0002

A

 

 

Type J, 280 to 840 °C Span (Input Code TJ2)

00444-0262-0006

A

 

 

Type K, 100 to 300 °C Span (Input Code TK1)

00444-0262-0003

A

 

 

Type K, 280 to 840 °C Span (Input Code TK2)

00444-0262-0007

A

 

 

Type K, 470 to 1410 °C Span (Input Code TK3)

00444-0262-0008

A

 

 

Type E, 100 to 300 °C Span (Input Code TE1) (2)

00444-0262-0001

A

 

 

Type E, 280 to 840 °C Span (Input Code TE2)

00444-0262-0005

A

 

 

Type T, 100 to 300 °C Span (Input Code TT1)

00444-0262-0004

A

 

 

Type R, 815 to 1670 °C Span (Input Code TR1)

00444-0262-0009

A

 

 

Type S, 815 to 1670 °C Span (Input Code TS1)

00444-0262-0010

A

 

 

Special Range T-9 Kit (consult factory)

00444-0013-XXXX

A

 

 

 

 

 

 

 

j7A

444M

Range Board—Millivolt Inputs

 

 

 

 

 

 

5 to 15 mV (Input Code MV1)

 

00444-0023-0001

A

 

 

15 to 45 °C Span (Input Code MV2)

00444-0023-0002

A

 

 

Special Range MV9 (consult factory)

00444-0023-XXXX

A

 

 

 

 

 

j7B

444R

Range Board Zero Jumpers (pkg. of 12)

00444-0036-0001

A

 

 

 

 

 

 

 

8

ALL

Instrument Tag (optional)

 

 

01151-0148

C

j

 

 

9

ALL

Certification Label

 

 

C

j

 

 

10

ALL

Mounting Bracket Kit

 

 

00444-0022-0001

C

 

 

1 each mounting bracket (item 10A )

 

 

 

 

4 each ¼–20 3 ½ bolts(item 10B)

 

 

 

 

 

2 each U-bolts (item 10C)

 

 

 

 

 

 

4 each ¼ washers (item 10D)

 

 

 

 

 

 

4 each 5/16 –18 nuts (item 10E )

 

 

 

 

 

2 each washer plates (item 10F )

 

 

 

 

 

 

 

 

 

 

11

ALL

Terminal Block, Three-position

 

 

C10448-0106

D

j

 

 

12

 

Terminal Block, Four-position

 

 

C10448-0109

D

j

 

 

 

(1) Spares Categories (2) Thermocouple Range Board Kit Consists of:

Code A – Recommended 1 spare part per 25 transmitters. 1 each T/C Range Board. Code B – Recommended 1 spare part per 50 transmitters. 1 each External CJC Block. Code C – None normally required.

Code D – Not used on transmitters, but recommended for repair actiivities.

5-12

Specifications and Reference Data

TABLE 5-8. Parts List for Model W444 Transmitter (CESI/CENELEC Approval).

 

Item

 

Part Description

Part No.

Spares Category(1)

 

 

Number

 

 

 

 

 

 

 

 

 

 

 

 

1

 

Housing Kit(2) — RTD Input

00444-0028-0001

C

 

 

 

Housing Kit(2) — Thermocouple Input

00444-0028-0002

C

 

 

 

Housing kit(2) — Millivolt Input

00444-0028-0003

C

 

2

 

Housing Cover—Quantity One

90032-0240-0003

C

 

j

 

 

3

 

Housing Cover O-rings

01151-0033-0003

B

 

j

 

 

1D

 

Adjustment Potentiometer O-rings

00444-0030-0001

B

 

j

 

 

4

 

Electronics Assembly Screws

00444-0031-0001

C

 

j

 

 

5

 

A/O Board—RTD Input

00444-0228-0001

A

 

j

 

 

 

 

Output Board—T/C, mV Input

00444-0015-0002

A

 

 

 

Output Board—RD Input

00444-0111-0001

A

 

 

 

 

 

 

 

6

 

Amplifier Board

00444-0007-0003

A

 

j

 

 

j7A

 

Range Board

 

 

 

 

 

W444 RL1

00444-0221-0001

A

 

 

 

W444 RL2

00444-0221-0002

A

 

 

 

W444 RL3

00444-0221-0003

A

 

 

 

W444 RL9 (consult factory)

00444-0003-XXXX

A

 

 

 

W444 TJ1

00444-0262-0002

A

 

 

 

W444 TJ2

00444-0262-0006

A

 

 

 

W444 TK1

00444-0262-0003

A

 

 

 

W444 TK2

00444-0262-0007

A

 

 

 

W444 TK3

00444-0262-0008

A

 

 

 

W444 TE1

00444-0262-0001

A

 

 

 

W444 TE2

00444-0262-0005

A

 

 

 

W444 TT1

00444-0262-0004

A

 

 

 

W444 TR1

00444-0262-0009

A

 

 

 

W444 TS1

00444-0262-0010

A

 

 

 

W444 T_9 (consult factory)

00444-0013-XXXX

A

 

 

 

W444 MV1

00444-0023-0001

A

 

 

 

W444 MV2

00444-0023-0002

A

 

 

 

W444 MV9 (consult factory)

00444-0023-XXXX

A

 

 

 

 

 

 

 

j7B

 

Range Board Zero Jumpers

00444-0036-0001

A

 

 

 

 

 

 

 

10

 

Mounting Bracket Kit

00444-0022-0001

C

 

 

 

 

 

 

 

11

 

Terminal Block, Three-position

C10448-0106

D

 

j

 

 

12

 

Terminal Block, Four-position

C10448-0109

D

 

j

 

(1)

Spares Categories

 

 

 

Code A – Recommended one spare part per 25 transmitters.

 

 

 

Code B – Recommended one spare part per 50 transmitters.

 

 

 

Code C – None normally required.Code D – Not used on transmitters, but recommended for repair activities (see Instruction

 

Manual).

 

 

 

(2)

Housing kit includes housing, adjustment potentionmeter O-rings, O-ring retainer plate and nameplate.

5-13

Rosemount Model 444 Alphaline Temperature Transmitters

TABLE 5-9. Parts List for Model T444 Transmitter (BASEEFA Approval).

Item

Part Description

Part No.

 

Spares Category(1)

 

Number

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Housing Kit(2)—RTD Input

00444-0028-0001

 

C

 

 

Housing Kit(2)—Thermocouple Input

00444-0028-0002

 

C

 

 

Housing kit(2)—Millivolt Input

00444-0028-0003

 

C

 

2

Housing Cover—Quantity One

90032-0240-0003

 

C

 

j

 

 

3

Housing Cover O-rings

01151-0033-0003

 

B

 

j

 

 

1D

Adjustment Potentiometer O-rings

00444-0030-0001

 

B

 

j

 

 

4

Electronics Assembly Screws

00444-0031-0001

 

C

 

j

 

 

5

A/O Board—RTD Input

00444-0228-0001

 

A

 

j

 

 

 

Output Board—T/C, mV Input

00444-0015-0001

 

 

 

 

 

 

 

 

 

 

6

Amplifier Board

00444-0007-0003

 

A

 

j

 

 

j7A

Range Boards

 

 

 

 

 

T444

RL1

00444-0136-0001

 

A

 

 

T444

RL2

00444-0136-0002

 

A

 

 

T444

RL3

00444-0136-0003

 

A

 

 

T444

RL9 (consult factory)

00444-0136-XXXX

 

A

 

 

T444

TE1

00444-0273-0001

 

A

 

 

T444

TJ1

00444-0273-0002

 

A

 

 

T444

TK1

00444-0273-0003

 

A

 

 

T444

TT1

00444-0273-0004

 

A

 

 

T444

TE2

00444-0273-0005

 

A

 

 

T444

TJ2

00444-0273-0006

 

A

 

 

T444

TK2

00444-0273-0007

 

A

 

 

T444

TK3

00444-0273-0008

 

A

 

 

T444

TR1

00444-0273-0009

 

A

 

 

T444

TS1

00444-0273-0010

 

A

 

 

T444

T_9 (consult factory)

00444-0138-XXXX

 

A

 

 

T444

MV1

00444-0139-0001

 

A

 

 

T444

MV2

00444-0139-0002

 

A

 

 

T444

MV9 (consult factory)

00444-0139-XXXX

 

A

 

 

 

 

 

 

 

j7B

Range Board Zero Jumpers

00444-0036-0001

 

A

 

 

 

 

 

 

 

10

Mounting Bracket Kit

00444-0022-0001

 

C

 

 

 

 

 

 

 

 

11

Terminal Block, Three-position

C10448-0106

 

D

 

j

 

 

12

Terminal Block, Four-position

C10448-0109

 

D

 

j

 

For meter information, see page 7.

 

 

 

(1)

Spares Categories

 

 

 

 

Code A – Recommended one spare part per 25 transmitters.

 

 

 

 

Code B – Recommended one spare part per 50 transmitters.

 

 

 

 

Code C – None normally required.

 

 

 

 

Code D – Not used on transmitters, but recommended for repair activities (see Instruction Manual).

 

(2)

Housing kit includes housing, adjustment potentiometer O-rings, O-ring retainer plate and nameplate.

 

5-14

Specifications and Reference Data

TABLE 5-10. Parts List for Model 444 RL Fast Turn On Transmitter (RTD Input).

Item

Part Description

 

Part No.

 

 

Spares Category(1)

Number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Housing Kit(2)

00444-0028-0001

 

 

C

 

2

Housing Cover—Quantity One

90032-0240-0003

 

 

C

 

j

 

 

 

3

Housing Cover O-rings

01151-0033-0003

 

 

B

 

j

 

 

 

1D

Adjustment Potentiometer O-rings

00444-0030-0001

 

 

B

 

j

 

 

 

4

Electronics Assembly Screws

00444-0031-0001

 

 

C

 

j

 

 

 

5

Output Board 444 RL B0912

00444-0126-0001

 

 

A

 

j

 

 

 

j7A

Range Boards

 

 

 

 

 

 

 

RL1 B0912

00444-0221-0011

 

 

A

 

 

RL2 B0912

00444-0221-0012

 

 

A

 

 

RL3 B0912

00444-0221-0013

 

 

A

 

 

 

 

 

 

 

 

j7B

Range Board Zero Jumpers

00444-0036-0001

 

 

A

 

 

 

 

 

 

 

 

10

Mounting Bracket Kit

00444-0022-0001

 

 

C

 

 

 

 

 

 

 

 

 

11

Terminal Block, Three-position

 

C104480106

 

 

D

 

j

 

 

 

12

Terminal Block, Four-position

 

C104480109

 

 

D

 

j

 

 

For meter information, see page 7.

 

 

 

 

 

(1)

Spares Categories

 

 

 

 

 

 

Code A – Recommended one spare part per 25 transmitters.

 

 

 

 

 

 

Code B – Recommended one spare part per 50 transmitters.

 

 

 

 

 

 

Code C – None normally required.

 

 

 

 

 

 

Code D – Not used on transmitters, but recommended for repair activities (see Instruction Manual).

 

(2)

Housing kit includes housing, adjustment potentiometer O-rings, O-ring retainer plate and nameplate.

 

TABLE 5-11. Parts List for Model 444 LL, 444 LM Low Power Transmitter (RTD Input).

 

 

 

 

 

 

 

 

Item

Part Description

 

Part No.

 

Spares Category(1)

Number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Housing Kit(2)

 

00444-0028-0005

 

 

C

 

2

Housing Cover—Quantity One

 

90032-0240-0003

 

 

C

 

j

 

 

 

 

3

Housing Cover O-rings

 

01151-0033-0003

 

 

B

 

j

 

 

 

 

1D

Adjustment Potentiometer O-rings

 

00444-0030-0001

 

 

B

 

j

 

 

 

 

4

Electronics Assembly Screws

 

00444-0031-0001

 

 

C

 

j

 

 

 

 

5

Output Board 444 LL

 

00444-0159-0001

 

 

A

 

j

 

 

 

 

 

Output Board 444 LM

 

00444-0159-0002

 

 

A

 

 

 

 

 

 

 

 

 

j7A

Range Boards

 

 

 

 

 

 

 

444 LL

 

00444-0157-0001

 

 

A

 

 

444 LM

 

00444-0157-0002

 

 

A

 

 

 

 

 

 

 

 

 

j7B

Range Board Zero Jumpers

 

00444-0036-0001

 

 

C

 

 

 

 

 

 

 

 

 

10

Mounting Bracket Kit

 

00444-0022-0001

 

 

C

 

 

 

 

 

 

 

 

 

11

Terminal Block, Three-position

 

C104480106

 

D

 

j

 

 

 

12

Terminal Block, Four-position

 

C104480109

 

D

 

j

 

 

No meter available.

 

 

 

 

 

(1)

Spares Categories

 

 

 

 

 

 

Code A – Recommended one spare part per 25 transmitters.

 

 

 

 

 

 

Code B – Recommended one spare part per 50 transmitters.

 

 

 

 

 

 

Code C – None normally required.

 

 

 

 

 

 

Code D – Not used on transmitters, but recommended for repair activities (see Instruction Manual).

 

(2)

Housing kit includes housing, adjustment potentiometer O-rings, O-ring retainer plate and nameplate.

 

5-15

Rosemount Model 444 Alphaline Temperature Transmitters

TABLE 5-12. Parts List for Model 444 Increased Accuracy or Special Range Transmitters.

Item

Part Description

 

Part No.

 

Spares Category(1)

Number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Housing Kit(2)—RTD Input

 

00444-0028-0001

 

C

 

 

Housing Kit(2)—Thermocouple Input

 

00444-0028-0002

 

C

 

 

Housing kit(2)—Millivolt Input

 

00444-0028-0003

 

C

 

2

Housing Cover—Quantity One

 

90032-0240-0003

 

C

 

j

 

 

 

3

Housing Cover O-rings

 

01151-0033-0003

 

B

 

j

 

 

 

1D

Adjustment Potentiometer O-rings

 

00444-0030-0001

 

B

 

j

 

 

 

4

Electronics Assembly Screws

 

00444-0031-0001

 

C

 

j

 

 

 

5

Output Board RL9

 

00444-0005-0001

 

A

 

j

 

 

 

 

Output Board T_9

 

00444-0015-0001

 

A

 

 

Output Board MV9

 

00444-0015-0001

 

A

 

 

 

 

 

 

 

 

6

Amplifier Board

 

00444-0007-0003

 

A

 

j

 

 

 

j7A

Range Boards

 

 

 

 

 

 

RL9 (consult factory)

 

00444-0003-XXXX

 

A

 

 

T_9 (consult factory)

 

00444-0013-XXXX

 

A

 

 

MV9 (consult factory)

 

00444-0023-XXXX

 

A

 

 

 

 

 

 

 

 

j7B

Range Board Zero Jumpers

 

00444-0036-0001

 

C

 

 

 

 

 

 

 

 

10

Mounting Bracket Kit

 

00444-0022-0001

 

C

 

 

 

 

 

 

 

 

11

Terminal Block, Three-position

 

C10448-0106

 

D

 

j

 

 

 

12

Terminal Block, Four-position

 

C10448-0109

 

D

 

j

 

 

For meter information, see below.

 

 

 

(1)

Spares Categories

 

 

 

 

Code A – Recommended one spare part per 25 transmitters.

 

 

 

 

Code B – Recommended one spare part per 50 transmitters.

 

 

 

 

Code C – None normally required.

 

 

 

 

Code D – Not used on transmitters, but recommended for repair activities.

 

 

 

(2)

Housing kit includes housing, adjustment potentiometer O-rings, O-ring retainer plate and nameplate.

 

5-16

Specifications and Reference Data

FIGURE 5-1. Transmitter Exploded View 1.

j2

j3

j4

j5

j7A

j7B

j1F

j1E

10E

10F

10A

Detail of Item 1B. O-Ring Retainer Plate Wiring Diagrams

Reversible

Thermocouple

or Millivolt

Side

Models 444T, MV

RTD Side

Models 444RL, LL, LM

View Corresponds to the Following Models:

444RL1 444LM1 444RL2 444LL1 444RL3

j8

j9

j1A

j1D j1B

j1C j3

j2

10D

10B

10C

Accessory Terminal Blocks For

Bench Testing

444-1151C02A, 0071A01A, 0071B01A, 1151H02A

5-17

Rosemount Model 444 Alphaline Temperature Transmitters

FIGURE 5-2. Transmitter Exploded View 2.

 

View Corresponds to

2

the Following Models:

j

 

 

 

j

444RL9

444TK3

444TR1

3

444TJ1

444TE1

444TS1

 

 

444TJ2

444TE2

444MV1

4

444TK1

444TT1

444MV2

j

5

444TK2

444T_9

444MV9

j

 

j

 

 

 

6

 

 

 

j

 

 

 

8

j

 

j7A

 

 

 

9

j1A

j7B

j1D j1B

j1C j3

j2

j1F

j1E

10E

10F

10D 10A

10B

Detail of Remote Cold Junction

10C

Compensation Sensor. (Model 444T)

3044-0X68C01A, 444-1151B02A, 0236D01A

5-18

Section

6 Options

MOUNTING BRACKET

The mounting bracket option provides auxiliary configurations for mounting the Model 444 transmitter. With this option you can either mount the transmitter to a 2-inch pipe or a suitable flat panel. The bracket is constructed of carbon steel with carbon steel U-bolts. See Figure 6-1 for an exploded view of the Model 444 with a mounting bracket in both configurations.

FIGURE 6-1. Model 444 with

Optional Mounting Bracket.

PIPESTAND MOUNTING

PANEL OR SURFACE MOUNTING

Transmitter can be Rotated 90°

5/16 -inch Bolts (four required, not furnished)

2.81 (81)

 

Mounting Bracket

 

¼–20 3½-inch

 

Bolt (4)

Clearance Hole

 

for ¼-inch Bolt

5/16 –18 U-bolt for

(eight places)

 

2-inch Pipe (2)

5.00 (127)

NOTE

Dimensions are in inches (millimeters).

Hole for 5/16 -inch Bolts (four places)

444-1151G, 1151F04A

6-1

Rosemount Model 444 Alphaline Temperature Transmitters

LCD / ANALOG METER

LCD METER

Configuration

FIGURE 6-2. LCD Meter.

Remove the Cover

The LCD and analog meters provide local indication of the transmitter output. Both meters attach easily to the terminal side of the transmitter.

The Rosemount® LCD meter plugs directly into the Model 444 to provide a highly accurate digital display of the process variable. The meter adds no voltage drop in the 4–20 mA current loop when connected directly across the transmitter test terminals.

Configure the LCD meter to meet specific requirements by using the left and right calibration buttons located on the meter face as shown in Figure 6-2. The analog bar graph is also shown in Figure 6-2. The 20-segment bar graph is factory calibrated and represents

4–20 mA directly.

.

Analog

Retaining

 

 

Bar Graph

Ring

 

 

 

-001AB

Left Configuration

Right Configuration

 

 

LCD

Button

Button

 

No calibration equipment is required to configure the LCD meter, but between 4 and 20 mA must exist in the loop in order for the meter to operate. The actual value of the current is not significant. In addition, meter configuration does not affect the transmitter/loop current. Use the following meter configuration procedure to properly configure the LCD meter.

1.Unscrew the retaining ring shown in Figure 6-2 and lift the transparent cover off of the housing.

NOTE

The LCD meter time-out is approximately 16 seconds. If keys are not pressed within this period, the indicator reverts to reading the current signal.

6-2

Options

Position the Decimal

Point and Select the

Meter Function

TABLE 6-1. LCD Meter Modes.

2.Press the left and right configuration buttons simultaneously and release them immediately.

3.To move the decimal point to the desired location, press the left configuration button. Note that the decimal point wraps around.

4.To scroll through the mode options, press the right configuration button repeatedly until the desired mode is displayed. See Table 6-1.

Options

Relationship between Input Signal and Digital Display

 

 

L in

Linear

L inF

Linear with five-second filter

Srt

Square root

SrtF

Square root with five-second filter

 

 

Square root function only relates to the digital display. The bar graph output remains linear with the current signal.

Square root response

The digital display will be proportional to the square root of the input current where 4 mA=0 and 20 mA=1.0, scaled per the calibration procedure. The transition point from linear to square root is at 25% of full scale flow.

Filter response operates upon “present input” and “input received in the previous five second interval” in the following manner:

Display = (0.75 3 previous input) + (0.25 3 present input)

This relationship is maintained provided that the previous reading minus the present reading is less than 25% of full scale.

Store the Information

Set the Display Equivalent

to a 4 mA Signal

Set the Display Equivalent

to a 20 mA Signal

Replace the Cover

5.Press both configuration buttons simultaneously for two seconds. Note that the meter displays “----” for approximately 7.5 seconds while the information is being stored.

6.Press the left button for two seconds.

7.To decrement the display numbers, press the left configuration button and to increment the numbers, press the right configuration button. Set the numbers between –999 and 1000.

8.To store the information, press both configuration buttons simultaneously for two seconds.

9.Press the right button for two seconds.

10.To decrement the display numbers, press the left configuration button on the display and to increment the numbers, press the right configuration button. Set the numbers between –999 and 9999. The sum of the 4 mA point and the span must not exceed 9999.

11.To store the information, press both configuration buttons simultaneously for two seconds. The LCD meter is now configured.

12.Make sure the rubber gasket is seated properly, replace the transparent cover, and replace the retaining ring.

6-3

Rosemount Model 444 Alphaline Temperature Transmitters

LCD Meter

Assembly

FIGURE 6-3. LCD Meter

Exploded View

LCD Meter

Specifications

Functional

Specifications

Figure 6-3 shows the mounting hardware required to properly install the LCD meter on a Model 444 transmitter. This mounting hardware may also be used with the Rosemount universal (analog) meter.

Mounting Screw into Housing

Cover Bushing

Cover Foam Spacer

Strap Washer

Retaining Straps

Mounting Screws

Mounting Screw into

Mounting Plate

Terminal Screws (Mount

into Transmitter “Test”

Terminal Block)

Mounting Plate

Meter (Meter may be rotated in 90 degree increments)

751-0264B

Input Signal

4–20 mA dc.

Meter Indication

4-digit LCD showing –999 to 9999. A 20-segment bar graph directly represents the 4–20 mA current.

Scaling/Calibration

4 mA Point Limits: –999 to 1000.

Span limits: 0200 to 9999.

The sum of the 4 mA point and span must not exceed 9999. Adjustments are made using non-interactive zero and span buttons.

Hazardous Locations Certifications

Approved for use with Rosemount Models 444, 751, 1135, 1144, and 1151.

6-4

Options

Performance

Specifications

Physical Specification

Overload Limitation

666 mA.

Temperature Limits

Storage: –40 to 85 °C (–40 to 185 °F).

Operating: –20 to 70 °C (–4 to 158 °F).

Between temperatures –40 to –20 °C (–40 to –4 °F), the loop is intact and the meter is not damaged.

Humidity Limitation

0 to 95% non-condensing relative humidity.

Update Period

750 ms.

Response Time

Responds to changes in input within a maximum of two update periods. If the filter is activated, then the display responds to the change within nine update periods.

Digital Display Resolution

0.05% of calibrated range ±1 digit.

Analog Bar Graph Resolution

0.05% of calibrated range.

Indication Accuracy

0.25% of calibrated range ±1 digit.

Stability

Over Time: 0.1% of calibrated range ±1 digit per six months.

Temperature Effect

0.01% of calibrated range per °C on zero.

0.02% of calibrated range per °C on span over the operating temperature range.

Power Interrupt

All calibration constants are stored in EEPROM memory and are not affected by power loss.

Failure Mode

LCD meter failure will not affect transmitter operation.

Under/Over Range Indication

Input current < 3.5 mA: Display blank.

Input current > 22.0 mA: Display flashes 112.5% of full scale value or 9999, whichever is less.

Meter Size

2¼-inch diameter face with ½-inch high characters.

6-5

Rosemount Model 444 Alphaline Temperature Transmitters

ANALOG METER

The analog meter plugs directly into the Model 444 to provide an accurate local indication of user-specified units. It requires an analog 4–20 mA dc, 10–50 mA dc, or 40–200 mV dc transmitter output from a two-wire transmitter, and adds no voltage drop in the 4–20 mA current loop when connected directly across the transmitter test terminals.

The large 2¼-inch diameter meter face has a two-inch long scale for easy readability, as shown in Figure 6-4. A meter-zero adjustment is located on the meter faceplate. You can rotate the meter in 90-degree increments within the transmitter housing for convenient viewing.

FIGURE 6-4. Analog Meter

Face.

яюэьюыъ

751-2534C01B

Analog Meter

Specifications

Functional

Specifications

Performance

Specifications

Physical Specification

Input Signal

 

4–20 mA dc

} Maximum series resistance is

10–50 mA dc

40–200 mV

10 ohms for milliameters.

Meter Indication

0 to 100% linear scale. Special optional ranges.

Overload Limit

150% of rated end scale value for two minutes.

Temperature Limits

–40 to 65 °C (–40 to 150 °F).

Humidity Limit

0 to 100% relative humidity.

Zero Adjustment

Adjustment screw on face of meter.

Indication Accuracy

±2% of calibrated span.

Temperature Effect

Less than 2% of full scale at any point within the temperature limits.

Meter Size

2¼-inch diameter face with 2-inch long scale.

6-6

Appendix

AHazardous Locations Certifications Drawings

Rosemount Drawing 00444-0261, 2 Sheets:

Model 444 Explosion-proof Installation Drawing, Factory Mutual.

Rosemount Drawing 01151-0214, 6 Sheets:

Index of Intrinsically Safe Barrier Systems and Entity parameters for 444, 1135, 1144, 1151, and 2051 Transmitters and 751 Field Indicators.

Rosemount Drawing 00444-0034, 2 Sheets:

CSA Intrinsic Safety Approvals for Model 444.

Rosemount Drawing 00444-0264, 1 Sheet:

Model 444 SAA Intrinisc Safety Configuration

A-1

Rosemount Model 444 Alphaline Temperature Transmitters

A-2

Appendix A

A-3

Rosemount Model 444 Alphaline Temperature Transmitters

A-4

Appendix A

A-5

Rosemount Model 444 Alphaline Temperature Transmitters

A-6

Appendix

BTemperature Sensor Reference Information

TABLE B-1. Resistance Versus Temperature Curve Ro=100.00 Ω, a=0.00385 Reference Standard IEC 751.

°C

 

°C

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–200

18.49

 

 

 

 

 

 

 

 

 

 

 

–100

60.25

56.19

52.11

48.00

43.87

39.71

35.53

31.32

27.08

22.80

 

 

0

100

96.09

92.16

88.22

84.27

80.31

76.33

72.33

68.33

64.30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

°C

0

10

20

30

40

50

60

70

80

90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

100

103.90

107.79

111.67

115.54

119.40

123.24

127.07

130.89

134.70

 

 

100

138.50

142.29

146.06

149.82

153.58

157.31

161.04

164.76

168.46

172.16

 

 

200

175.84

179.51

183.17

186.82

190.45

194.07

197.69

201.29

204.88

208.45

 

 

300

212.02

215.57

219.12

222.65

226.17

229.67

233.17

236.65

240.13

243.59

 

 

400

247.04

250.48

253.90

257.32

260.72

264.11

267.49

270.86

274.22

277.56

 

 

500

280.90

284.22

287.53

290.83

294.11

297.39

300.65

303.91

307.15

310.38

 

 

600

313.59

316.80

319.99

323.18

326.35

329.51

332.66

335.79

338.92

342.03

 

 

700

345.13

348.22

351.30

354.37

357.42

360.47

363.50

366.52

369.53

372.52

 

 

800

375.51

378.48

381.45

384.40

387.33

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

°F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

°F

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–300

25.18

22.80

20.41

18.01

 

 

 

 

 

 

 

 

–200

48.46

46.17

43.87

41.56

39.25

36.93

34.60

32.26

29.91

27.55

 

 

–100

71.00

68.77

66.54

64.30

62.05

59.80

57.55

55.28

53.02

50.74

 

 

0

93.03

90.85

88.66

86.47

84.27

82.07

79.87

77.66

75.44

73.22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

°F

0

10

20

30

40

50

60

70

80

90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

93.03

95.21

97.39

99.57

101.74

103.90

106.07

108.22

110.38

112.53

 

 

100

114.68

116.83

118.97

121.11

123.24

125.37

127.50

129.62

131.74

133.86

 

 

200

135.97

138.08

140.18

142.29

144.38

146.48

148.57

150.66

152.74

154.82

 

 

300

156.90

158.97

161.04

163.11

165.17

167.23

169.29

171.34

173.39

175.43

 

 

400

177.47

179.51

181.54

183.57

185.60

187.62

189.64

191.66

193.67

195.68

 

 

500

197.69

199.69

201.69

203.68

205.67

207.66

209.64

211.62

213.60

215.57

 

 

600

217.54

219.51

221.47

223.43

225.38

227.34

229.28

231.23

233.17

235.11

 

 

700

237.04

238.97

240.90

242.82

244.74

246.65

248.57

250.48

252.38

254.28

 

 

800

256.18

258.07

259.96

261.85

263.74

265.62

267.49

269.36

271.23

273.10

 

 

900

274.96

276.82

278.67

280.53

282.37

284.22

286.06

287.90

289.73

291.56

 

 

1000

293.38

295.21

297.03

298.84

300.65

302.46

304.27

306.07

307.87

309.66

 

 

1100

311.45

313.24

315.02

316.80

318.58

320.35

322.12

323.88

325.64

327.40

 

 

1200

329.16

330.91

332.66

334.40

336.14

337.88

339.61

341.34

343.07

344.79

 

 

1300

346.51

348.22

349.93

351.64

353.35

355.05

356.74

358.44

360.13

361.81

 

 

1400

363.50

365.18

366.85

368.52

370.19

371.86

373.52

375.18

376.18

378.48

 

 

1500

380.13

381.77

383.41

385.05

386.68

388.31

389.94

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B-1

Rosemount Model 244P Head and Rail Mount Temperature Transmitters

B-2

Index

A

Accuracy 5-3

Ambient Temperature Effect 5-3

Analog Meter Specifications 5-8

B

Burnout Protection Adjustments 4-6

C

Calibration

Low-Power Transmitter 3-8

Millivolt Transmitter 3-10

RTD Transmitter 3-2

Thermocouple Transmitter 3-5

Configuration 5-7

D

Digital Display Resolution 5-7

Dimensional Drawings

Sensor Assembly 2-9

Transmitter 2-13

Disassembly Procedure 4-4

E

Electrical Installation 2-12

Final Checkout 2-12 Input Connections 2-12 Output Connections 2-12 Preliminary Checkout 2-12

Exploded View LCD Meter 6-4

Transmitter 5-17, 5-18

Transmitter with Mounting Bracket 2-13, 6-1

G

Grounding 2-7

Current Signal Loop 2-7

RTD Circuit 2-7

Shielded Wire 2-7

Thermocouple and Millivolt

Transmitters 2-7

H

Hazardous Location

Certifications 5-4

Hazardous Location Installation 2-10

Humidity Limitation 5-7

I

Input Impedance 5-3 Inputs 5-1 Installation 2-1

Electrical Considerations

Intrinsically Safe Installations 2-10

Multi-Channel Installations 2-7

Power Supply 2-4, 2-8

Mechanical Considerations 2-1

Hazardous Location

Installation 2-10

Moist or Corrosive Atmospheres 2-10

Mounting 2-2

Temperature Environment 2-8

Installation Procedure 2-11 Electrical 2-12 Mechanical 2-11

Interchangeability of Parts 4-6 Intrinsically Safe Installations 2-10 Introduction 1-1

L

LCD Meter

Assembly 6-4

Specifications 6-4

LCD Meter Specifications 5-7

Load Effect 5-3

Load Limitations 5-2

Loss of Input 5-2

Low-Power Transmitter 3-8

Calibration Equipment

Required 3-8

Calibration Procedure 3-9

M

Maintenance 3-1, 4-1

Burnout Protection

Adjustments 4-6 Disassembly Procedure 4-4 Interchangeability of Parts 4-6 Reassembly Procedure 4-5 Repair 4-3

Warranty Service 4-7

Materials of Construction 5-4 Mechanical Installation 2-11 Millivolt Transmitter 3-10

Moist or Corrosive Atmospheres 2-10 Mounting 2-2

Mounting Bracket 2-2, 2-13, 6-1 Mounting Position Effect 5-3 Multi-Channel Installations 2-7

O

Ordering Tables 5-9–5-11

Output Limits 5-2

Outputs 5-1

P

Power Supply 2-4, 2-8, 5-2

Power Supply Effect 5-3

R

Reassembly Procedure 4-5

Repair 4-3

Burnout Protection

Adjustments 4-6

Disassembly Procedure 4-4

Interchangeability of Parts 4-6

Reassembly Procedure 4-5

Warranty Service 4-7

Response Time 5-7

RTD Inputs 2-5

Remote RTD Mounting 2-5

RTD Transmitter 3-2

Calibration Equipment

Required 3-2

Calibration Procedure 3-2

I-1

Rosemount Model 444 Alphaline Temperature Transmitters

S

Sensor and Conduit Connections 5-4 Sensor Connections

Grounding 2-7

RTD Inputs 2-5 2-Wire RTD 2-6 3-Wire RTD 2-6 4-Wire RTD 2-6

Compensation Loop RTD 2-6

Differential Millivolt 2-6 Differential RTD 2-5

Thermocouple or Millivolt Inputs 2-7

Span and Zero 5-2 Spans 5-1

Spare Parts, List of 5-12–5-16

Specifications and Reference Data 5-1

Analog Meter Specifications 5-8 LCD Meter Specifications 5-7

Configuration 5-7

Digital Display Resolution 5-7

Humidity Limitation 5-7 Response Time 5-7 Temperature Limits 5-7 Update Period 5-7

Transmitter Specifications 5-1, 5-2

Accuracy 5-3

Ambient Temperature Effect 5-3

Hazardous Location

Certifications 5-4

Input Impedance 5-3 Inputs 5-1

Load Effect 5-3

Materials of Construction 5-4

Mounting Position Effect 5-3

Power Supply Effect 5-3

Sensor and Conduit

Connections 5-4 Stability 5-3 Turn-on Time 5-2 Vibration Effect 5-3 Weight 5-4

Stability 5-3

T

Temperature Environment 2-8 Temperature Limits 5-2, 5-7 Testing

RTD Test 4-3 Thermocouple Test 4-3

Thermocouple or Millivolt Inputs 2-7 Thermocouple Transmitter 3-5

Calibration Procedure for a Compensated Thermocouple

Calibration Equipment Required 3-5

Calibration Procedure 3-5

Calibration Procedure for Ice Bath

Calibration Equipment Required 3-7

Calibration Procedure 3-7 Troubleshooting 4-2

Turn-on Time 5-2

U

Update Period 5-7

V

Vibration Effect 5-3

W

Warranty Service 4-7

Weight 5-4

Wiring 2-4

I-2

Index

I-3

Rosemount Inc.

8200 Market Boulevard

 

 

 

 

Chanhassen, MN 55317 USA

 

 

 

Tel 1-800-999-9307

 

 

 

 

Telex 4310012

 

 

 

 

Fax (612) 949-7001

 

 

E

 

R

INT

 

 

IN

D

© 1998 Rosemount Inc.

P

 

 

 

.S.A

 

U

 

.

 

 

 

 

http://www.rosemount.com

Fisher-Rosemount Limited

Fisher-Rosemount

Heath Place

Singapore Pte Ltd.

Bognor Regis

1 Pandan Crescent

West Sussex PO22 9SH

Singapore 128461

England

Tel (65) 777-8211

Tel 44 (1243) 863 121

Fax (65) 777-0947

Fax 44 (1243) 867 5541

Tlx RS 61117 FRSPL

¢00809-0100-4263z¤

00809-0100-4263, Rev. AA