5 Key features
5.1 Volume measurement
Honeywell 2024
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Reverse UncVol (item 906) – counts up based solely on reverse rotation direction per item 433
configuration
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Net CorVol (item 900) – is the difference between Forward and Reverse Cor-Vol (item 896 – item
902)
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Net UncVol (item 904) – is the difference between Forward and Reverse Cor-Vol (item 898 – item
906)
Four switch sensors are utilized in Bidirectional volume mode to allow for direction detection as well as
redundancy protection. If one of the four switch sensors is not detected after completing a full revolution,
the EC350 will trigger a switch Alarm for that particular ‘missing’ switch sensor. For example: switch
sensor input sequence of: 1-2-4-1-2… will trigger a Switch-3 sensor Alarm.
Attention: Three switch sensors are required to count volume input. If two switch sensors fail the
EC350 will trigger a switch Alarm for the second ‘missing’ switch sensor and will then stop counting
Volume input as it can no longer distinguish between back and forth partial rotations and full
rotations. Example: switch sensor input sequence of: 1-3-1-3-1 can either be partial rotation or full
rotation
Bidirectional volume mode has four switch sensors installed on the switch plate where standard UMB/ID
input has only two switch sensors installed. Shown below is wiring and switch plate diagram for
Bidirectional Volume. Also see: ‘section, “ Changing the drive rotation ”, to position the bevel-gear thimble
of EC350 to ensure the reading rotates in the desired direction of rotation.
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