89
Reference Manual
00809-0300-4750, Rev CA
Advanced Configuration Functionality
March 2016
Advanced Configuration Functionality
Pulse scaling
Transmitter may be commanded to supply a specified frequency between 1 pulse/day at
39.37 ft/sec (12 m/s) to 10,000 Hz at 1 ft/sec (0.3 m/s).
Note
Line size, special units, and density must be selected prior to configuration of the
pulse
scaling
factor.
The pulse output scaling equates one transistor switch closure pulse to a selectable number
of volume units. The volume unit used for scaling pulse output is taken from the numerator
of the configured flow units. For example, if gal/min had been chosen when selecting the
flow unit
, the volume unit displayed would be gallons.
Note
The pulse output scaling is designed to operate between 0 and 10,000 Hz. The minimum
conversion factor value is found by dividing the minimum span (in units of volume per
second) by 10,000Hz.
Note
The maximum
pulse scaling
frequency for transmitters with an intrinsically safe output
(output option code B) is 5000 Hz.
When selecting pulse output scaling, the maximum pulse rate is 10,000Hz. With the 110
percent over range capability, the absolute limit is 11,000Hz. For example, if you want the
Rosemount 8750W to pulse every time 0.01 gallons pass through the sensor, and the flow
rate is 10,000 gal/min, you will exceed the 10,000 Hz full-scale limit:
The best choice for this parameter depends upon the required resolution, the number of
digits in the totalizer, the extent of range required, and the maximum frequency limit of the
external counter.
Pulse width
The factory default
pulse width
is 0.5 ms.
LOI menu path
Field Mount: Detailed Setup, Output Config, Pulse, Pulse Scaling
Wall Mount: PULSE OUTPUT SCALING
Traditional Fast Keys
1, 4, 2, 2, 1
Device dashboard
2, 2, 2, 2, 3
LOI menu path
Field Mount: Detailed Setup, Output Config, Pulse, Pulse Width
Wall Mount: AUX. FUNCTION
Traditional Fast Keys
1, 4, 2, 2, 2
Device dashboard
2, 2, 2, 2, 4
10 000gal
,
1min
-----------------------------
1min
60s
--------------
×
1pulse
0.01gal
---------------------
×
16 666Hz
,
=
Содержание Rosemount 8750W
Страница 2: ......
Страница 96: ...84 Reference Manual 00809 0300 4750 Rev CA Operation March 2016 Operation ...
Страница 158: ...146 Reference Manual 00809 0300 4750 Rev CA Digital Signal Processing March 2016 Digital Signal Processing ...
Страница 168: ...156 Reference Manual 00809 0300 4750 Rev CA Maintenance March 2016 Maintenance ...
Страница 208: ...Product Certifications March 2016 Reference Manual 00809 0300 4750 Rev CA 196 Product Certifications ...
Страница 209: ...197 Product Certifications Product Certifications March 2016 Reference Manual 00809 0300 4750 Rev CA ...
Страница 212: ...Product Certifications March 2016 Reference Manual 00809 0300 4750 Rev CA 200 Product Certifications ...
Страница 214: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 202 Wiring Diagrams ...
Страница 218: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 206 Wiring Diagrams ...
Страница 219: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 207 Wiring Diagrams ...
Страница 220: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 208 Wiring Diagrams ...
Страница 222: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 210 Wiring Diagrams ...
Страница 223: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 211 Wiring Diagrams ...
Страница 224: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 212 Wiring Diagrams ...
Страница 225: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 213 Wiring Diagrams ...
Страница 227: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 215 Wiring Diagrams ...
Страница 228: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 216 Wiring Diagrams ...
Страница 229: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 217 Wiring Diagrams ...
Страница 263: ......