Mace HVFlo XCi, Product Manual

Page: 148 / 255

Introduction to XCi channel types
The MACE XCi system uses " Channels to enable various measurements to be made and other parameters
to be calculated (see - The essential steps to configuring an HVFlo XCi device ). These " Channel
types " can be defined as:
Connected sensor channels -
These channels output their value based on information received from
physically connected sensors wired
to the various MACE FloSeries3 Cards.
Calculated channels -
These channels use the values received from " Connected sensor channels " and apply algorithms in order
to output calculated values. For example, when calculating a flow rate in a partially full pipe a " Flow rate
(using velocity )" channel type uses the values received from a connected velocity sensor and a connected
depth sensor
System channels -
These channels have values directly received from the XCi system.
Full list of XCi channel types and brief description:
XCi Channel Types Description
Velocity This channel type MUST be used whenever the resultant velocity
measurement will be used in a flow rate calculation. It MUST be
used whenever a MACE Doppler ultrasonic sensor is used to meas-
ure velocity.
Depth This channel type MUST be used whenever the resultant depth
measurement will be used in a flow rate calculation. It MUST be
used whenever a MACE Doppler ultrasonic sensor is used to meas-
ure depth.
Doppler stream index Provides a measure of the signal strength received by a MACE Dop-
pler velocity sensor in calculating the average stream velocity.
Velocity (depth corrected) Used to apply a correction factor to measured velocity data based
upon different depth regimes of the stream.
Flowrate (using velocity) Used to calculate a flow rate based upon the results obtained from
configured velocity and depth channels.
MACE XCi User Manual - 148 -