Table of Contents
Advertisement
ELLCOR
June 1,1992
Dear N-200 User:
Subject: Component update for the NELLCOR9 N-200 pulseoximeter.
Nellcor Incorporated has elected to change the battery pack in the monitor portion of the
N-200. Although the new battery pack has a lower charge capacity, it was chosen for its
consistent performance. The effect of this lower capacity is a reduction in the instrument's
battery operation from 120 minutes to 90 minutes.
The charge capacity of lead-acid batteries is highly variable. Testing has shown that
the actual performance of a battery in good condition may exceed the new specification by
as much as 45 minutes. Nellcor has specified 90 minutes as the typical battery operation
period at the time of shipment. Storage may decrease battery capacity, and several com
plete charge cycles may be required to restore the battery to its rated capacity.
Nellcor monitors are equipped with sealed lead-acid batteries. Battery capacity
decreases over time due to several factors such as temperature, depth of discharge, and
number of charge/discharge cycles. Replacing the battery periodically ensures battery
operation when needed. A periodic battery capacity check is also recommended. The time
interval for this check is left to the discretion of the customer. Depending on how the unit
is used, the customer may wish to perform a battery check as often as every 6 months.
This check should also include inspection of the batteries' physical condition. Any
batteries with signs of leakage or corrosion should be replaced. Regardless of periodic test
results, Nellcor recommends replacement of lead-acid batteries every 2 years. Replace
ment batteries can be purchased through Nellcor's Technical Services Department.
This notification must be included with the information in the N-200 operator's manual.
Attach it accordingly.
If you have any questions or concerns regarding the N-200 pulse oximeter, contact
Nellcor's Technical Services Department at 1-800-NELLCOR or 510 887-5858. In Europe,
contact Nellcor B.V., +31.73.42.6565.
Sincerely,
Technical Services
026332A-0692
Advertisement
Table of Contents
