A&D WM:PD4000136 Ambulatory Blood Pressure Monitor - Manual (Page 32)

Page 30
Maintenance
Checking Accuracy
Required equipment
❏ Accurate office mercury sphygmomanometer or aneroid gauge with inflation
system.
❏ TM-2430 Accuracy Diagnostic Kit (TM2430-90).
❏ A rigid cylinder sized to fit the cuff pressured.
Steps for checking accuracy
Step 1
Turn off the TM-2430 and remove the air hose from the unit.
Step 2 Construct the check system as this drawing.
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
ON
OFF
SYS/INTER
VAL
DIA
PULSE/TIME
AI R
AUT O
ON/OFF
STAR
T
STOP
0 1 2
0 1 2 3 4 5 6 7 8 9
A rigid cylinder
Cuff
TM-2430 Accuracy
Diagnostic Kit
Inflator bulb
Exhaust valve and
adjustment screw
Mercury sphyg-
momanometer
Power switch
START STOP switch
Recorder
Step 4 Turn on the power switch, when you press and hold the START STOP key.
The TM-2430 blinks the "0" of measurement value.
Step 5
Squeeze the inflator bulb until cuff pressure reaches to 50 mmHg.
Verify that the difference between the blinking display of TM-2430 and
mercury sphygmomanometer is within
±3 mmHg.
Step 6
Squeeze the inflator bulb until cuff pressure reaches to 150 mmHg.
Verify that this difference is within
±3 mmHg.
Step 7
Squeeze the inflator bulb until cuff pressure reaches to 250 mmHg.
Verify that this difference is within
±3 mmHg.
Step 8
Release the cuff air, turn off the TM-2430 and remove the kit.
This blood pressure recorder is a precision instrument. Contact your nearest
A&D office for this inspection, if you need repair.
Checking Accuracy Maintenance
(not included)