Damp Rate Select - Meriam Instrument M2 User Manual

DP = Differential pressure corresponding to Q,
Example: If the DP is 25 inches H
rate is 10,000 units, then the Flow constant is 2,000.

Damp Rate Select

Adjustable exponential type damping is available to steady
the display when measuring pulsating pressure or flow.
The Smart Manometer has a range of damping rates; 0.1,
0.2, 0.5, 1, 2, 5, 10, or 25 seconds. Exponential damping
shows approximately 70% of a step change in pressure
upon the next display update. When set for 5 second time
constant, it takes 5 seconds from the time of the step
change until the manometer displays the full value of the
new pressure.
To set the damp rate, follow the steps below:
Keystroke
1. Follow the steps
on page 4 to put the
unit in Program
Mode
2. Press the 
arrow key.
3. Press the PRGM
key.
4. Press the  or 
arrow key until the
desire desired damp
rate is displayed on
the bottom line.
5. Press the PRGM
key.
6. Press the 
arrow key.
7. Press the PRGM
key.
calculation sheet), any flow unit
unit must be inches H
Top line reads PROGRAM
MODE" and bottom line
reads "UNITS SELECT".
Bottom line reads "DAMP
RATE SELECT".
Top line reads "DAMP
RATE SELECT".
Bottom line shows damp
rate in seconds.
Top line reads
"PROGRAM MODE" and
bottom line reads "UNITS
SELECT".
Bottom line reads "EXIT".
Returns to Measure
Mode.
10
0 @20°C
2
0 @20°C when the flow
2
Display