5 Key features
5.1 Volume measurement
Honeywell 2024
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5.1.2 Uncorrected volume
The gas flowing through rotary meter is measured by multiplying the input signals supplied by the two
redundant volume sensors with the appropriate scaling factor (in item 114) for a particular rotary meter
(selected in item 432). Generally, 114 value is set automatically when the meter model is selected, but 114
can also be set manually for other meters models.
Currently, EC350 supports over 140 meter models explicitly. Others can be supported with manual
configuration.
5.1.3 Energy
In addition to the corrected and uncorrected volume, EC350 also calculates the energy (in item 140)
corresponding to the corrected volume, based on a fixed user-configurable conversion factor (item 142).
EC350 supports a large range of units for measuring energy; some of them are as follows: Therms,
Decatherms, Mega Joules, Giga Joules, Kilo Calories, and Kilo Watts.
Refer to the Item Reference Guide for information about Energy (item 140), Energy units (item 141), and
Gas energy value (item 142) .
5.1.4 Volume statistics
The EC350 supports numerous gas volume statistical related items (Mins. Maxs, Peaks, Avgs) for Cor-Vol,
Unc-Vol, Flow rate, and Dial rate.
Refer to “Item Reference Guide” for information about the gas volume statistical Items.
5.1.5 Volume Input Modes
Refer to the “Item Reference Guide” for information about Input volume mode (item 433) and Rotary
Integral mount (item 432).
5.1.5.1 UMB, Instrument Drive & Remote input
EC350 supports gas volume measurement from UMB (Universal Mounting Bracket) and Instrument Drive
interfaces. Select the meter model from the list provided from item 432. If the meter is not in the list, use
item 433 to set selection: LF-UMB/Instrument Drive and configure meter index rate (item 98) and meter
scaling (item 114) to match the application. Note that item 114 is typically set to value 1.000.
Note that two switch inputs are normally used in these applications to provide for switch input
redundancy (one switch can backup the other).
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