Mace HydroMace XCi, Product Manual, Page: 151 / 270

WARNING: Due to natural variability of the ceramic depth sensing diaphragm and
associated electronics, these numbers are approximations and should not be used in
configuring an XCi device. They are provided for illustrative purposes ONLY
"Depth" channel from a MACE EchoFlo Depth Sensor
The Slope and Offset values of the installed EchoFlo are dependent on the “ Fill Height ” as entered during
the EchoCal configuration procedure.
NOTE: The following calculations are based on the EchoFlo being configured with a
frequency output.
Manually calculating Slope
Slope = Fill Height ÷ Sensor Span
Fill Height:
The maximum depth measured by the EchoFlo. Refer to the EchoFlo Quick Start Guide for
further details.
Sensor Span: Is the difference between the sensor output at the top of the “ Fill Height ” (2000Hz) and the
sensor output at the bottom (976Hz).The frequency output of an EchoFlo has a span of 1024Hz .
Manually calculating Offset
Offset = - (Slope x Sensor output at zero)
Metric example - you wish to calculate the slope and offset for an EchoFlo that has been configured with a
“ Fill Height ” of 0.75m (75cm).
The following calculations will provide the sensor’s slope and offset:
Slope
= 0.75 ÷ (2000-976)
MACE XCi User Manual - 151 -