Emerson Process Management 3000 - Manual (Page 166)

Instruction Manual
Appendix J Rev. 1.1
June 1995
J-2 Appendices Rosemount Analytical Inc. A Division of Emerson Process Management
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