Amprobe TMA-21HW User Manual page 17

• Push "" key move to the two flicking digits to hour.
• Push "" and "" keys to set the hour of the real – time.
• Push "" key move to the two flicking digits to minute.
• Push "" and "" keys to set the minute of the real – time.
• Push "" key move to the two flicking digits to second.
• Push "" and "" keys to set the second of the real – time.
• Push "↵" key to stored these setting.
• Push "SET" key several times until the " SET " symbol is disappeared to
exit the setting mode.
Select a Time Constant mode
• Push "SET" key two times to enter this mode, the "TC" symbol and the
current time constant are displayed.
• Push  and  keys to scroll through the choices and push "↵" key to
store the choice. The choice for the time constant are : 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 15, 20, 25 and 30 seconds.
• Push "SET" key several times until the " SET " symbol is disappeared to
exit the setting mode.
The time constant is an averaging period. It is used to dampen the
display. If you are experiencing fluctuating flows, a longer time constant
will slow down those fluctuations.The average method is also referred to
as a "moving average".
Select a Auto Data Memory Interval Time mode
• Push "SET" key three times to enter this mode, the "INTV" symbol and
the current interval time are displayed.
• Push "" and "" keys to scroll through the log interval choices. The
choice are : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25 and 30 seconds, and 1, 2,
3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30 and 60 minutes. Push "↵" key to store
the choice.
• Push "SET" key several times until the " SET " symbol is disappeared to
exit the setting mode.
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