12 Manual Updated May 19, 2020
Rate of Change Graph/ Sensor Level Indicator
Indicates how quickly the current live reading is changing. The rate of change graph helps you get
a feel for stable and unstable water pressures which lets you determine when a test will yield good
results or when the pressure is too volatile to test.
The rate of change graph also coincides with the sensor location inside the Mako when held in the
proper vertical testing orientation. This allows the tester to level the sensor appropriately when
testing on DC
BA’s, SVBA’s and PVBA’s.
Stable Differential Pressure
When the pressure is stable, the Rate of Change Graph will look like the example above or have
one to two units filled in either direction.
