3-4          BeneVision N17/BeneVision N15/BeneVision N12 Patient Monitor Service Manual 
3.1.5 NIBP Tests 
3.1.5.1 Leakage Test 
Tools required: 
  NIBP cuff for adult patient 
  NIBP hose 
  Cylinder 
 
Follow this procedure to perform the test: 
1.  Set Patient Category to Adult.   
2.  Connect the NIBP cuff to the NIBP connector on the patient monitor. 
3.  Wrap the cuff around the rigid cylinder as shown below. 
 
4.  Select Main Menu  →  Maintenance  →  enter the required password  →  Module  →  NIBP  →  NIBP 
Leakage Test. The message NIBP Leakage Test is displayed in the NIBP parameter area.   
5.  The cuff automatically deflates after 20s, which means NIBP leakage test is completed.   
6.  If no message is displayed in the NIBP parameter area, it indicates that the system has no leak. If the 
message NIBP Pneumatic Leak is displayed, it indicates that the system may have a leak. In this case, 
verify the connections and make sure that the NIBP cuff, hose, and connectors are not leaking. Then, 
perform the test again. 
 
You can also perform a manual leakage test: 
1.  Perform steps 1-4 in the NIBP Accuracy Test section. 
2.  Raise the pressure in the rigid vessel to 250 mmHg with the squeeze bulb. Then, wait for 5 seconds 
until the measured values become stable.   
3.  Record the current pressure value and meanwhile count time with a timer. Then, record the pressure 
value after counting to 60 seconds.   
4.  Compare the two values and make sure the difference is not greater than 6 mmHg. 
 
   
Hose 
Cylinder 
Monit
Cuff 
NIBP connector