Delfi PTS ii - Calibration Procedure

MAINTENANCE
47 MAINTENANCE
3
CALIBRATION
Calibration should be performed every twelve months, or after any unscheduled maintenance.
Calibration of the PTS ii allows the output signal from the pressure transducers to be compared against a calibrated
pressure source. The difference between the known pressure and the pressure measured by the transducers is recorded
at each of four set-points, and these four calibration factors are used to correct the signal from the pressure transducers
during normal operation. The calibration factors are stored in memory.
Required Equipment:
• Calibrated 0 to 650 mmHg pressure gauge.
• Adjustable 0 to 650 mmHg pressure source.
• Suitable pneumatic hoses and connectors.
Note: A calibration hose set Delfi (REF 9-2200-612) can be purchased from Delfi to connect the end of the PTS ii hose to a
pressure source and a reference pressure gauge
CAUTION: The following steps must be taken in the exact order to calibrate the unit. Failure to do so may result in
incorrect pressure readings while the unit is in operation
1
Enter Calibration Mode:
• Touch the ON/STANDBY button to turn the unit ON, then
touch and hold three hidden buttons during the welcome
screen
• The locations of the three hidden keys are indicated by
the three red rectangles in the figure to the right