Chapter 4: Operating Instructions
4-2 UT100 Handheld Pulse Oximeter Operation Manual
To install/replace the batteries:
1. Depress the battery door and remove it downward.
2. Install the negative end of each battery first, compressing the battery
terminal spring until the positive terminal clears the positive tab. Press
the battery down into place.
3. Place battery door into the slots of the monitor back panel, depress the
door tab, and press the door into place.
NOTE! If you install disposable batteries, be sure to dispose of them in
compliance with your institution’s guidelines and local
ordinances.
NOTE! The unit will hold data for about one and a half minutes with no
battery power. This will insure the safety of trend data during
battery replacement.
4.3 AC Power Adapter
The AC power adapter can be used as the monitor’s power supplier and Ni-MH
cells’ charger.
NOTE! Do not plug the monitor into an outlet controlled by a wall
switch.
NOTE! When using AC power, the Digital Oximeter is a class II device
with functional earth. This earth connection is for device
electromagnetic compatibility and does not provide protection
to the patient or user.
NOTE! Do not use the AC adapter to charge alkaline batteries.
4.3.1 Charging Ni-MH batteries
The battery may discharge during prolonged storage or shipment. If the monitor
have been in storage for more than 2 months, it is important to plug the AC
power adapter into an AC outlet and allow the batteries to charge for
approximately 30 minutes before attempting to operate the instrument.
To charge a low battery, connect the monitor to an AC power through the AC
power adapter. A full charge of a completely discharged battery takes 20 hours
