Siemens SC 7000 Service Manual page 81

SC 7000 and SC 9000XL Patient Monitors
10Non-Invasive Blood
Pressure Function
10.1 System Setup and
Pneumatics Leakage
Test
10.2 Calibration Check
ASK-T898-03-7600
7k9kXLSM.c4.CD_ROM.fm/04-99/kaupp
The SC 7000 and SC 9000XL measure non-invasive blood pressure (NBP)
according to the oscillometric method. Perform NBP characterization after
replacing the NBP Subassembly and also after replacing the Rear Housing
Subassembly (which includes the Connector I/O PCB). Use tools listed in
Table 4-1 on page 58 to check calibration of the pressure transducer. Note
pressure indicator required for NBP calibration.
Figure 4-1 NBP Calibration Check / Calibration Test Setup
Set up the NBP Calibration assembly (Art. No. 28 77 855 EE54U) as
illustated in Figure 4-1. Assure that pneumatic leakage is within
specifications before continuing to
1) Assure that patient category is set to Adult.
2) Set following in NBP parameter field menu:
• Interval Time - OFF
• Continuous Mode - OFF
• Calibrate Mode - ON. (Observe "NBP Cal. = 0 mmHg" appears.)
3 Clamp pneumatic hose (with hemostat or clamp) between T-connector
and monitor ( in Figure 4-1), and using pressure bulb, increase
pressure to 250 ±5 mmHg. Then clamp hose at inflation bulb (
Figure 4-1),and let pressure stabilize for 1 minute. Do NOT run pump.
4) Observe pressure drop for an additional 5 minutes. Drop should be <2
mmHg in 5 minutes. If not, tighten all connections and fittings and
retest equipment for leakage. When leakage test OK, go on to step 5.
5) With both clamps removed, reinflate to 250±5 mmHg, if necessary,
and then reclamp hose at inflation bulb.
6) Observe pressure drop for 1 minute. Drop should be <4 mmHg. If not,
service monitor's internal pneumatics system and retest system for
leakage. When leakage test OK, remove clamp at inflation bulb and go
on to Section 10.2.
Note: You may have only 2 min. to perform this test if the pump has
run since the monitor was powered on, before the H/W deflation error
initiates. If this happens, you will need to reset the monitor. If the
pump has not run, however, there is no time limit.
Siemens Medical Systems, EM-PCS Danvers
NOT A CONTROLLED DOCUMENT
1
2
Section 10.2, Calibration Check.
Service Manual
(
in
65