Manometer Pressure Check - GE Corometrics 126 Service Manual

Manometer Pressure Check

Revision B
General Maintenance: Maternal Blood Pressure Tests
This test is used to perform a calibration check of the internal blood pressure
module. This test should be performed annually by a qualified service person. The
following equipment is required in order to perform the test:
Mercury manometer with a range of 300 mmHg minimum; or digital pressure
gauge
Inflation hand bulb
Corometrics standard hose with a female Luer fitting for a single-tube cuff—the
cuff should be removed
T-connector with a male Luer fitting (remaining fittings dependent upon
manometer and hand bulb
1. Attach the connector end of the pneumatic hose to the
the 120 Series Monitor.
2. Attach a T-connector with a male Luer fitting to the cuff end of the pneumatic
hose.
3. Connect the appropriate end of the T-connector to the inflation bulb.
4. Connect the remaining end of the T-connector to the manometer tubing.
5. Use the Trim Knob control to set the NBP mode on the Diagnostic Control
service mode screen to MANOMETER.
6. Verify that the cuff pressure in the NBP display area is 0 mmHg.
7. Using the inflation bulb, manually pump up the pressure to 200 mmHg ± 1
mmHg, as indicated by the manometer. Verify that the monitor displays a
pressure reading of 200 mmHg ± 5 mmHg.
8. Hold the pressure at 200 mmHg for 30 seconds and verify that the pressure
indicated by the monitor does not change. If the monitor is unable to hold the
pressure for the test period, deflate the pressure to 0 mmHg, check the assembly
of the calibration equipment, and repeat the test procedure. If the monitor fails
to hold the pressure a second time, contact your Service Representative.
9. Repeat step 7 using the pressure levels indicated in
levels are not within tolerance, contact your Service Representative.
120 Series Maternal/Fetal Monitor
2015590-001
Maternal BP
connector on
Table 9-1. If the pressure
9-9