Emerson 3000 World Class, Instruction Bulletin, b. Device Description, J-3SPECIFICATIONS

Instruction Bulletin

Appendix J Rev. 1.2 May 2005

World Class 3000

b. Device Description

The HART (Highway Addressable Remote Transducer) Communicator is a hand-held communications interface device. It provides a common communications link to all microproc- essor-based instruments which are HART com- patible. The hand-held communicator contains an 8 x 21 character liquid crystal display and 25 keys. A pocket-sized manual, included with the HART Communicator, details the specific func- tions of all keys.

To interface with the IFT 3000, the HART Com- municator requires a termination point along the 4-20 mA current loop, and a minimum load re- sistance of 250 ohms between the communica- tor and the power supply. The HART Communicator accomplishes its task by use of a frequency shift keying (FSK) technique. With the use of FSK, high-frequency digital communica-

tion signals are superimposed on the 4-20 mA transmitter current loop. The communicator does not disturb the 4-20 mA signal, since no net energy is added to the loop.

The HART Communicator may be interfaced with a personal computer, providing special software has been installed. To connect the HART Communicator to a PC, an interface adaptor is required. Refer to the proper HART Communicator documentation in regard to the PC interface option.

J-3 SPECIFICATIONS

HART Communicator Specifications, Table J-1, contains physical, functional, and environmental information about the communicator. Use Table J-1 to ensure the unit is operated in suitable en- vironments, and that the proper battery charging options are used.

		Table J-1. HART Communicator Specifications
Physical Specifications
Display	8-line liquid crystal display with a line width of 21 characters (128 x 64 pixels)
Keypad	Membrane design with tactile feedback. 25 keys include:
	6	action keys
	4 software-defined function keys
	12	alphanumeric keys
	3	shift keys
Weight	≈ 3 lbs (1.4 kg) including batteries
Functional Specifications
Memory	Nonvolatile memory. Retains memory when the communicator is not powered.
Program (and Device)
Descriptions	1.25 MB
Transmitter Data	2 K
Power Supply	Five AA 1.5 volt batteries. A rechargeable Nickel-Cadmium battery pack is optional.
Battery Charger Options....	110/120 Vac, 50/60 Hz, U.S. plug
...........................................	220/230 Vac, 50 Hz, European plug
...........................................	220/230 Vac, 50 Hz, UK plug
Microprocessors	32-bit Motorola type 68331; 8-bit Motorola type 68HC05
Connections	Lead set: Two 4 mm banana plugs
	Battery charger: 2.5 mm jack
	Serial port: PC connection through optional adaptor
	Memory Module: 26 pin, 0.1 inch Berg connector
Environmental Specifications
Operating Limits	32° to 122°F (0° to 50°C)
Storage Limits	-4° to 158°F (-20° to 70°C)
Humidity	0 to 95% relative humidity under non-condensing conditions below 104°F (40°C)
	without error
Hazardous Locations	CENELEC - Intrinsic Safety Certification
Certifications	Factory Mutual (FM) - Intrinsic Safety Approval
	Canadian Standards Association (CSA) - Intrinsic Safety Approval

J-2 Appendices Rosemount Analytical Inc. A Division of Emerson Process Management