Welch Allyn TR-2 Hand Aneroid - User Manual - Manual (Page 3)

Interchanging Inflation Systems
1. To remove the attached inflation system, hold the cuff tubing near the connector
and pull gently until the tubing slips free.
2. To attach a new or different size inflation system, push the tubing onto the connec-
tor until the tubing is snug.
NOTE: Replacement cuffs come standard with a metal luer fitting which is utilized
with many Tycos sphygmomanometers. Remove this fitting for use with the TR-2
Hand Aneroid.
Bulb Replacement
1. Grasp the sphygmomanometer in
one hand and gently pull on the
bulb until it comes free.
2. Press the new bulb onto the valve
stem. Make sure the top of the bulb
slips under the retaining ring and is
pressed up flush with the base of
the trigger valve. If the bulb will not
slip under the retaining ring, slightly
loosen the ring for better access.
3. If the assembly will not seal com-
pletely, gently tighten the retaining
ring with pliers.
Aneroid Gauge Accuracy
This instrument meets the AAMI accuracy standard for Aneroid Sphygmomanome-
ters which is ± 3 mmHg. Aneroid Calibration Check - Welch Allyn, Inc., recommends
checking the calibration of mechanical sphygmomanometers on an annual basis.
Standard check accuracy pressures are 300, 250, 200, 150, 100, 60, and 0 mmHg. Pres-
surize gauge above 300 mmHg and bleed gauge down no faster than 10 mmHg per
second to the proper points to perform check. If using a mercury column or another
aneroid gauge to check calibration, verify the accuracy of the gauge in question is
within ±6 mmHg. If using a digital pressure standard, the accuracy of this standard is
within ± 1 mmHg. Verify the accuracy of the gauge in question is ± 4 mmHg. This
product will maintain the safety and performance characteristics specified at tempera-
tures ranging from 0°c (32°F) to 46°C (115°F) at a relative humidity not to exceed 85%.
VALVE
STEM
RETAINER
RING
BULB
SPHYGMO-
MANOMETER