Supplementary Measurements
SUPPLEMENTARY MEASUREMENTS
Peak and Valley
While the MC4000 is in operation, the maximum and minimum pressure measurements from both pressure transducers, P1
and P2, record automatically . Pressing
UP
or
DOWN
displays the measurements .
In measuring mode press
UP
to display the maximum values recorded by pressure sensors P1 and P2 . The small arrows on the
display points up, indicating displayed readings are the maximums (see
) . Press
DOWN
to display the minimum values
of P1 and P2 . The small arrow on the display points down, indicating displayed readings are the minimums (see
) .
P1
bar
124.32
P1-P2
bar
13.55
PW
kW
38.4
P2
bar
86.56
P1
bar
124.32
P1-P2
bar
13.55
PW
HP
38.4
P2
bar
24.12
US
Figure 8: Pressure display screens
Pressure Difference
The upper right quadrant of the display shows the pressure difference between pressure transducer P1 and P2 . Stored
maximum and minimum readings show in the left side quadrants of the display (see
)
.
Power
The lower right quadrant shows the instantaneous power reading in either HP or kW . See
The pressure units are
either psi or bar, temperature readings are in either º F or º C .
It is important that the pressure entries and scaling use consistent units of psi and º F for US measurements or bar and º C for
EU measurements . Unpredictable results occur if the pressure and temperature units are mismatched .
Power Calculations
The power calculation
Power (HP) =
1720
Pressure (psi) x Flow (gpm)
Power (kW) =
600
Pressure (bar) x Flow (lpm)
Examples
US–When programmed in US units of pressure (psi) and flow (gpm), the power is calculated in HP .
Pressure = 1450 .4 psi
Flow
= 52 .84 gpm
Power (HP) =
1720
1450.4 (psi) x 52.84 (gpm)
= 44.56 HP
DIN–When programmed in DIN units of pressure (bar) and flow(lpm), the power is calculated in kW .
Pressure = 100 bar
Flow
= 200 lpm
Power (kW) =
600
100 (bar) x 200 (lpm)
= 33.33 kW
Page 13
February 2015
TST-UM-00017-EN-03
