Emerson Rosemount 644R User Manual

7.7.4 NG IECEx Type n – without enclosure
Certificate:
[Headmount Fieldbus/PROFIBUS, Railmount HART]: IECEx
BAS 13.0053X
[Headmount HART]: IECEx BAS 12.0070U
Standards:
IEC 60079-0: 2017, IEC 60079-15: 2010
Markings:
[Headmount Fieldbus/PROFIBUS, Railmount HART]: Ex nA IIC
T5 Gc (–40 °C ≤ T
a
≤ +70 °C)
[Headmount HART]: Ex nA IIC T6…T5 Gc; T6(–60 °C ≤ T
a
≤ +40
°C); T5(–60 °C ≤ T
a
≤ +85 °C)
Special Conditions for Safe Use (X):
1. The Rosemount 644 Temperature Transmitter must be installed in a
suitably certified enclosure such that it is afforded a degree of
protection of at least IP54 in accordance with IEC 60529 and IEC
60079-15.
2. When fitted with the Transient Protector Assembly, the equipment is
not capable of withstanding the 500 V test. This must be taken into
account during installation.
7.7.5 NK IECEx Dust
Certificate:
IECEx FMG 12.0022X
Standards:
IEC 60079-0: 2011, IEC 60079-31: 2013
Markings:
Ex tb IIIC T130 °C Db, (–40 °C ≤ T
a
≤ +70 °C); IP66
See Table 7-1 for process temperatures
Special Conditions for Safe Use (X):
1. See certificate for ambient temperature range.
2. The non-metallic label may store an electrostatic charge and become
a source of ignition in Group III environments.
3. Guard the LCD display cover against impact energies greater than 4
joules.
4. Flameproof joints are not intended for repair.
5. A suitable certified Ex d or Ex tb enclosure is required to be connected
to temperature probes with Enclosure option “N”.
6. Care shall be taken by the end user to ensure that the external
surface temperature on the equipment and the neck of DIN Style
Sensor probe does not exceed 130 °C.
Quick Start Guide April 2019
34 Rosemount 644H and 644R

Emerson Rosemount 644R Specifications

General

Type	Temperature Transmitter
Measurement Type	Temperature
HART Protocol	HART 7
Display	Optional LCD
Input	RTD, Thermocouple, Ohms, mV
Sensor Type	RTD, Thermocouple
Output	4-20 mA HART
Power Supply	10.5 to 42 VDC
Temperature Range	-40 to 85 °C
Process Temperature Range	-40°C to 85°C (-40°F to 185°F)
Enclosure	Aluminum
Enclosure Rating	IP66
Mounting	Field
Stability	±0.1% of URL per year

Summary

Safety Messages

General Safety Notices

Essential safety guidelines, notices, and warnings for installation and operation.

Electrical Shock Warning

Critical safety warning regarding electrical hazards and contact with live terminals.

Configure (Bench Calibration)

Update Field Communicator Software

Procedure for updating software and connecting for bench calibration.

Verify Configuration

Traditional Interface and Fast Keys

Using the field communicator traditional interface and fast key sequences.

Calibration Constants Input

Procedure for entering Callendar Van-Dusen constants via traditional interface.

Calibration Constants via Dashboard

Procedure for entering Callendar Van-Dusen constants via device dashboard.

Set Switches

Setting Switches on 644H/644R

Instructions for setting switches on different Rosemount 644 models.

Mount the Transmitter

Transmitter Mounting Procedures

Step-by-step guide for installing the connection head and transmitter.

Install Universal Head

Procedure for mounting the transmitter with a universal head.

Rail Mount Mounting

Instructions for mounting rail mount transmitters with threaded sensors.

Wire and Apply Power

Transmitter Wiring

Diagrams and instructions for connecting sensors to the transmitter.

Powering the Transmitter

Procedures and notes for applying power to the transmitter.

Load Limitation

Information on transmitter power requirements and voltage limits.

Transmitter Grounding Options

Procedures for grounding the transmitter based on input types.

Perform a Loop Test

Performing Loop Tests

Steps to perform analog loop tests via traditional interface and device dashboard.

Product Certifications

European Directive Information

Details on EU Declaration of Conformity and its availability.

North American Certifications

USA explosionproof, intrinsic safety, and non-incendive certification details.

Canadian Certifications

Information on Canadian intrinsic safety and explosionproof certifications.

ATEX and IECEx Certifications

Details on ATEX and IECEx flameproof, intrinsic safety, and type n certifications.

Regional Certifications

Certifications for Brazil, China, EAC, and Japan.

Additional Type Approvals

Type approvals from ABS, BV, DNV, and LR.

Specification Tables

Tables detailing process temperature limits and entity parameters.