Meriam M2110F SMART FLOW GAUGE - Manual (Page 18)

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9.3 P2- DISPLAY DAMP RATE
The Smart Gauge has a selectable damping rate, which is used to filter the display. The damp rate setting is
approximately the time it will take for the gauge to ramp from one stable value to another. The filter characteristic
is exponential; changing at a slower rate as the final value is approached.
The “time constant” of the exponential equation is roughly one-fifth of the damp rate setting. This means that the
damped value will be roughly 63% of final value after a time equal to one-fifth of the register setting.
The damping function only affects the LCD display and RS232 data values. It does not affect the action of the relay
outputs or the 4 to 20 mA outputs.
P# Name Description Value Range Notes
P2 Damp Rate Exponential damping time in seconds. 0.1, 0.2, 0.5, 1, 2, 5,
10, 15, 25, 50 0.1 = No Damping.
GAUGE IN MEASURE MODE
1. Press PRGM/ENTER to access P0 prompt
2. If lockout is in-active prompt will be P0
• Increment P# using UP ARROW until P2 is displayed
• Press PRGM/ENTER to access P2 value
• Press the UP or DOWN ARROWS to change the selection
• Press PRGM/ENTER to enter the damp rate selection
• Press the BACKSPACE to return to MEASURE MODE
3. If lockout is active prompt will be L 00
• Enter Lockout Code then continue as in 2) above
9.4 P3 – MEASUREMENT MODEL
The M2110F Flow Gauge will correctly measure flow when used with a primary element: LFE, Accutube or Orifice
plate by measuring the differential pressure across the primary element. Register P3 is used to describe the primary
element measurement characteristics as either square root or linear function. If P3=0 then the gauge will display the
differential pressure developed across the primary element.
P# Name Description Value Range Notes
0) inH2O display
Std. inH2O @ 20
ºC
P9 and P10 not used.
1) Laminar Flow
Element
LFE inH2O @ 4
ºC
P3 Measurement
Mode
Identifies the primary element
characteristic ( Square Root or Linear)
The measured differential pressure is
automatically compensated for the
temperature reference defined for each
selection.
2) Square Root
Element
SQRT inH2O @ 60
ºF
P10 not used
GAUGE IN MEASURE MODE
1. Press PRGM/ENTER to access P0 prompt
2. If lockout is in-active prompt will be P0
• Increment P# using UP ARROW until P3 is displayed
• Press PRGM/ENTER to access P3 value
• Press the UP or DOWN ARROWS to change the selection
• Press PRGM/ENTER to enter the measurement model selection
• Press the BACKSPACE to return to MEASURE MODE
3. If lockout is active prompt will be L 00
• Enter Lockout Code then continue as in 2) above
All Models