Meggitt VM600 - Broad-Band Pressure Monitoring

VM600 MPS hardware manual (standard version) MAMPS-HW/E 7 - 25
Edition 17 - February 2018
Broad-band pressure monitoring
PROCESSING MODES AND APPLICATIONS
2) Block diagram
The difference in expansion measured on each side of the machine is calculated as follows:
ΔX = (X1
 Initial GAP1)  (X2  Initial GAP2)
7.12Broad-band pressure monitoring
X1 input
Figure 7-22: Block diagram showing differential housing expansion processing
X1 value
Alarm level
detectors
Initial
gap 1
X2 input
Initial
gap 2
X1 alarms
X1X2 value
X1X2 alarms
X2 value
X2 alarms
Pressure
input
Broad band
Output 1
pressure alarm
Output 2
pressure alarm
Output 2
pressure value
Output 1
pressure value
RMS (+ scaled values)
Mean
Peak
Peak-Peak
Alarm level
detector
Figure 7-23: Block diagram showing broad-band pressure processing
Alarm level
detector