Справочник Пользователя для Emerson 2700
56
Micro Motion
®
Model 1700 and 2700 Transmitters
Specifications
Core processor connection
The transmitter has two pairs of wiring terminals for the 4-wire connection to the core processor:
•
One pair is used for the RS-485 connection
•
One pair is used to supply power to the core processor
Plug connectors accept stranded or solid conductors, 24 to 12 AWG (0,2 to 2,5 mm
2
).
FISCO and FNICO approval
Model 2700 transmitters with F
OUNDATION
fieldbus and PROFIBUS-PA are either FISCO or FNICO
approved depending on their output code:
•
Transmitters with output code E (intrinsically safe F
OUNDATION
fieldbus) or output code G
(PROFIBUS-PA) are FISCO approved with the following entity parameters:
-
Ui = 30 V
-
Ii = 380 mA
-
Pi = 5.32 W
-
Ci = 0.0002 µF
-
Li = 0.0 mH
•
Transmitters with output code N (non-incendive F
OUNDATION
fieldbus) are FNICO approved
A.1.2
Input/output signals
Input signal from sensor
•
4-wire remote: one intrinsically safe 4-wire mating connector
•
9-wire remote: two intrinsically safe terminal blocks with 3 sockets and one intrinsically safe
terminal block with 4 sockets (only 3 sockets are used)
terminal block with 4 sockets (only 3 sockets are used)
•
Remote core processor with remote transmitter:
-
Core processor: two intrinsically safe terminal blocks with 3 sockets and one intrinsically
safe terminal block with 4 sockets (only 3 sockets are used)
safe terminal block with 4 sockets (only 3 sockets are used)
-
Transmitter: one intrinsically safe 4-wire mating connector
Model 1700/2700 transmitters with non-intrinsically safe analog outputs option board
(output option code A)
(output option code A)
One 4–20 mA output
•
Not intrinsically safe
•
Internally powered (active)
•
Isolated to ±50 VDC from all other outputs and earth ground
•
Maximum load limit: 820 Ohms
•
Model 1700 can report mass flow or volume flow; Model 2700 can report mass flow, volume
flow, density, temperature, or drive gain; transmitters with the petroleum measurement
application (API) or enhanced density application can also report standard volume flow and
density at reference temperature
flow, density, temperature, or drive gain; transmitters with the petroleum measurement
application (API) or enhanced density application can also report standard volume flow and
density at reference temperature
•
Linear with process from 3.8 to 20.5 mA, per NAMUR NE43 (June 1994)