Service manual

3. DIAGNOSTIC CHECK
3.32 Service Manual BSM-4100
2. Calibration (2)
The Calibration (2) Check program is not used for calibration but is used to
display the accuracy of the Pressure Sensor 2. The accuracy of the sensor changes
with the measuring pressure. The following table shows the acceptable accuracy
range of the Pressure Sensor 2 at different pressure ranges.
<Acceptable Accuracy Range of Pressure Sensor 2 at Different Pressure Ranges>
Pressure Range Acceptable Accuracy Range
0 - 15 mmHg −2 mmHg to +3 mmHg
16 - 200 mmHg +/−8 mmHg
201 - 300 mmHg +/−12 mmHg
Checking the Accuracy of Pressure Sensor 2
1. Connect the manometer and hand bulb pump to the dummy cuff using the Y-
shape connector and connect the dummy cuff to the instrument with the air
hose as shown below.
2. Touch the “SELECT” key to select item number 2.
3. Touch the “START” key to start the check.
4. Immediately start pumping the hand bulb pump. Stop pumping the hand bulb
pump when the pressure reading displayed on the NIBP Check display of the
instrument is within one of the three pressure ranges. ( 0 - 15, 16 - 200 or 201 -
300 mmHg).
5. Compare the pressure reading displayed on the NIBP Check display with the
pressure reading on the manometer.
6. Repeat steps 4 and 5 for a reading in the other pressure range.
If the accuracy of the pressure sensor for any of the three pressure ranges is out
of the acceptable accuracy range, replace the NIBP Safety board or pneumatic
circuit with a new one.