UEi Test Instruments AK900SC - Manual (Page 16)

16
Using the Pressure Gauges
Once mounted properly onto a service manifold, the pressure gauges
behave just like traditional needle pressure gauges. Usually, the low
side of the manifold is connected to the low-side service port, and the
high side of the manifold to the high-side service port.
Using Pressure Recall Modes
The pressure recall modes are useful when setting switching
equipment and observing load changes over long periods. In HI
mode, the highest pressure sensed since the MAX / MIN CLR button
was pressed is shown for both low and high pressure sides, along with
the corresponding saturation temperatures. In LO mode, the lowest
pressures are shown.
To begin observing pressure fluctuations, press the MIN/MAX CLR
key. If not in HI or LO mode, the display will not show any changes,
but the threshold memory has been updated to the current pressure
readings.
When in HI or LO modes, the dynamic update bar graphs is inactive.
15-minute automatic shutdown is also disabled to allow continuous
monitoring of pressure. Be sure to turn off the unit manually when
finished.
Using Temperature Modes
The temperature probe is designed for pipes of varying diameters.
Using the hook-and-loop fastener or other types of straps, secure it
firmly onto the pipe, with the concave side firmly on the pipe surface.
For best accuracy on temperature related measurements, insulate the
sensor against ambient air by wrapping the installed sensor and pipe
with a piece of pipe insulation.