Emerson 1700 Benutzerhandbuch
Installation Manual
57
Specifications
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– Con
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Spec
ifications
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us/PR
O
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IB
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Output Wiring – Intrinsica
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O
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tp
ut
Wi
ri
ut
Wi
ri
ng
– Con
– Con
fig
urab
le I
/O
Spec
ifications
Ou
tpu
tpu
t W
irin
g
irin
g
– Fiel
db
us/PR
us/PR
O
F
IB
U
S
Output Wiring – Intrinsica
ll
y Saf
e
O
u
tp
ut
Wi
ri
ut
Wi
ri
ng
– Con
– Con
fig
urab
le I
/O
Spec
ifications
Ou
tpu
tpu
t W
irin
g
irin
g
– Fiel
db
us/PR
us/PR
O
F
IB
U
S
Output Wiring – Intrinsica
ll
y Saf
e
O
u
tp
ut
Wi
ri
ut
Wi
ri
ng
– Con
– Con
fig
urab
le I
/O
Spec
ifications
Ou
tpu
tpu
t W
irin
g
irin
g
– Fiel
db
us/PR
us/PR
O
F
IB
U
S
Output Wiring – Intrinsica
ll
y Saf
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One frequency/pulse output (Model 1700 transmitters) or frequency/pulse/discrete output (Model
2700 transmitters):
2700 transmitters):
•
Not intrinsically safe
•
Internally powered (active)
•
Maximum current: 100 mA
•
Output voltage: +24 VDC ±3%, with a 2.2 kohm internal pull-up resistor
•
Frequency/pulse output (Model 1700/2700):
-
Can be used to indicate either flow rate or total; Model 1700 output reports the same flow
variable as the mA output, Model 2700 output is independent from mA output
variable as the mA output, Model 2700 output is independent from mA output
-
Scalable to 10,000 Hz
-
Linear with flow rate to 12,500 Hz
-
Configurable polarity: active high or active low
•
Discrete output (Model 2700 only):
-
Can report event 1, event 2, event 1 or 2, flow direction, flow switch, calibration in
progress, or fault
progress, or fault
-
Maximum sink capability: 500 mA
-
Configurable polarity: active high or active low
Model 1700/2700 transmitters with intrinsically safe outputs option board (output option code D)
Model 1700 has one 4–20 mA output; Model 2700 has two 4–20 mA outputs:
•
Intrinsically safe
•
Externally powered (passive)
•
Isolated to ±50 VDC from all other outputs and earth ground
•
Maximum input voltage: 30 VDC, 1 watt maximum
•
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)
•
Maximum load limits: see following chart