Welch Allyn Connex Spot Monitor Service Manual page 115

Service manual
No.
3
Create a blood pressure Y-tube
The blood pressure Y-tube is a piece of custom test equipment that connects the device
to the test setup. The Y-tube is composed of a modified blood pressure hose and a Y-
type fitting. Follow these instructions to create a Y-tube.
1. Cut a 4500-30 blood pressure hose approximately 6 inches from the connector that
connects to the device.
2. Split the end of the dual-lumen hose to create two separate hoses. Make sure not to
puncture either hose.
3. Insert one end of the Y-type fitting into each end of the hose.
NIBP tests
For the NIBP leak test, overpressure test, or accuracy check, connect the test equipment
according to the test setup diagram for your configuration presented earlier in this
section. Connect the manifold to the volume repair fixture as indicated by the service
tool or the test procedure.
NIBP leak test (Standard unlicensed edition)
The NIBP leak test is performed automatically using the service tool. The leak test
pressurizes the system with a start pressure (P
seconds (T
formula L = (P
Perform an NIBP leak test
1. Set up the test equipment.
2. Launch the service tool on the PC.
3. If the simplified interface is active, choose the Service option.
4. Log on with your user ID and password or with ADMIN as the user ID and leave the
password field blank.
5. Power on the device.
6. Select the device you want to test from the device list.
7. Click NIBP Sensor under the Device Information tab.
8. Click Leak Test in the NIBP Sensor pane on the right side of the window.
9. Follow the prompts until the test completes.
10. Click Close.
Item
Blood pressure Y-tube
) the end pressure (P
t
– P )/ T . The test fails if the leak rate exceeds 5 mmHg in 15 seconds.
s e t
Functional verification and calibration overview 109
No. Item
6 PC
) of 250 mmHg ± 10 mmHg. After 15
s
) is measured. The leak rate is calculated using the
e