CTL (CTLIBRTTION) GROUP
Meter
Adv
Main
System
Setup
Log
I/O
Cal
Factory
Transit
Doppler
Figure 90: Calibration group
Transit Page
Figure 91: Calibrate transit time
Set Zero (ns)
Press
Set Zero (ns)
zeros to remove the No Flow transit time offset . This is also referred to as Zeroing the meter .
Because every flow meter installation is slightly different and sound waves can travel in slightly different ways through these
various installations, it is important to remove the zero offset at zero flow to maintain the meter’s accuracy . To establish
Zero flow and eliminate the offset:
1 . The pipe must be full of liquid .
2 . Flow must be absolutely zero . Securely close any valves and allow time for any settling to occur .
3 . Press
Set Zero (ns)
once .
User Tdjustment
This allows the user to enter a calibration factor . The range can be 0 .2…5 .0 . This adjustment modifies the indicated flow rate
by multiplying the flow rate value by the number entered into the
User Adjustment
field . For example, if indicated flow rate is
20 gpm, a user adjustment of “2 .000” will modify the flow rate to 40 gpm .
OTEE:
N
Only use this under the guidance of Badger Meter Technical Support . Default should always be “1 .000” .
Positive Flow
As of Rev K, the Positive flow checkbox is always marked . This checkbox will be used to allow reversal of measurement .
Reynolds Correcting
As of Rev K, the Reynolds Correcting checkbox is always greyed and unmarked .
This checkbox will be used to allow Reynolds compensation of flow measurements . Currently, the DXN does not support
Reynolds compensation .
Cal (Calibration) Group
Page 70
November 2016
HYB-UM-00090-EN-04