Appendix a, Ift9701 specifications, A.1 performance specifications – Emerson IFT9701 User Manual
Page 73: A.2 functional specifications, A.2.1 output signals, Appendix a ift9701 specifications, Performance specifications, Functional specifications a.2.1, Output signals
Model IFT9701 Transmitter Instruction Manual
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Spec
ifications
Appendix A
IFT9701 Specifications
A.1
Performance specifications
For performance specifications, refer to the documentation for your sensor.
A.2
Functional specifications
A.2.1
Output signals
Milliamp (active)
•
4–20 mA output represents mass flow or volume flow
•
Sensor size determines minimum and maximum spans. Recommended minimum span (% of
nominal flow range):
-
ELITE sensors: 2.5%
-
F-Series sensors: 10%
-
D and DL sensors: 10%
•
Load limit is 600 ohms
•
Internally powered (active)
•
Isolated to ±500 VDC from all other outputs and earth ground
•
Out-of-range capability is 3.8 or 20.5 mA
Pulse (passive)
•
Pulse output represents mass or volume flow
•
Externally powered (passive), requires pull-up resistor to 5–30 VDC power supply
•
Minimum resistance is 500 ohms at 5 V, 3 kohms at 30 V
•
Galvanically isolated to ±500 VDC
•
Out-of-range capability to 7200 Hz
•
Voltage in on state is less than 1 V
•
Below 1 Hz, the pulse width will be 500 ms; at all pulse frequencies between 1 Hz and
7200 Hz, the pulse width is half the pulse period
Communication
•
HART protocol-compatible Bell 202 digital signal is superimposed on 4–20 mA analog signal,
and available for host system interface
•
Frequency 1.2 and 2.2 kHz, amplitude 0.5 mA peak-to-peak, baud rate 1200 baud
•
Requires 250 to 600 ohms load resistance