Welch Allyn Inc.
Aneroid Sphygmomanometers Service Manual
Revision A
Welch Allyn Inc.
Page 27 of 40
6.3 Testing of the Silver Ring Hand Aneroid
1. Hook up the Silver Ring Hand Gauge that needs to be tested to
the pneumatic tubing of the test equipment.
2. Apply 320 mmHg to the gauge.
3. Release the pressure to 300 mmHg on the digital pressure meter,
or a calibrated aneroid or mercury gauge. Note: The aneroid or
mercury gauge must be accurate to +/- 3 mmHg at the stated
target pressures using a calibrated digital pressure meter. If using
a calibrated aneroid or mercury column the accuracy must be +/-
6 mmHg.
4. Check reading of the pressure meter or gauge to that of the Silver
Ring Hand Gauge under test. Refer to section 1.3 for
specifications.
