Dynasonics DXN Portable Ultrasonic Measurement System - Manual (Page 57)

Totalizer Reset – (Yes/No)
Totalizer Reset is used to reset all totalizers back to zero. To prevent inadvertent resets a totalizer lock is provided.
To reset the totalizers first tap the Check To Unlock Total Reset button (See
Figure 72 ). A check mark will appear in the within
the button. The Reset Totalizer button previously grayed out will now become active. Press the Reset Totalizer button to
return all totalizers to zero.
NOTE: N
The DXN also has a hardware totalizer reset function.
Limit Page
Site Name 0.00 GPM
1/16/2013
2:18 PM
Meter Display Adv Cal System Site Log I/O
Filter Energy Totalizer Flow Limit
Low Flow Limit
(GPM)
1.00
Max Limit (GPM) 20
Min Limit (GPM) -20
Figure 73: Limit Value Settings
Min Flow Limit [Minimum Flow Rate Settings] (Value)
A minimum rate setting is entered to establish filter software parameters and the lowest rate value that will be displayed.
Volumetric entries will be in the Flow Units selected in the Meter>Flow. For unidirectional measurements, set Min Flow
Limit to zero. For bidirectional measurements, set Min Flow Limit to the highest negative (reverse) flow rate expected in the
piping system.
NOTE: N The flowmeter will not display a flow rate at flows less than the Min Flow Limit value. As a result, if the Min Flow Limit
is set to a value greater than zero, the flowmeter will display the Min Flow Limit value, even if the actual flow/energy
rate is less than the set Min Flow Limit.
For example, if the Min Flow Limit is set to 25 and the actual rate is 0, the display will indicate 25. Another example, if
the Min Flow Limit is set to –100 and the actual flow is –200, the meter will indicate –100. This can be a problem if the
meter’s Min Flow Limit is set to a value greater than zero because at flows below the Min Flow Limit the rate display
will show zero flow, but the totalizer which is not affected by the Min Flow Limit setting will keep totalizing.
Max Flow Limit [Maximum Flow Rate Settings] – (Value)
A maximum volumetric flow rate setting is entered to establish filter software settings. Volumetric entries will be in the
Rate Units selected in the Meter>Flow. For unidirectional measurements, set Max Flow Limit to the highest (positive) flow
rate expected in the piping system. For bidirectional measurements, set Max Flow Limit to the highest (positive) flow rate
expected in the piping system.
Installation & Operation Manual
Page 57 February 2013