Powering
9-Volt Alkaline Battery Replacement
21
Powering
The QUESTemp
º
48N Heat Stress Monitor uses a 9-volt
alkaline battery. A door on the back of the instrument allows
the user access to the 9-volt battery.
The 2-position switch located in the battery compartment is
set by the user to the 9-volt battery.
Figure 1-31: 9-volt battery
9-Volt Alkaline Battery Replacement
WARNING
:
Replace batteries only in a non-hazardous environment.
The 9-volt battery should be replaced should be recharged when the voltage drops below
6.4 volts. The battery voltage is displayed when the instrument is turned on. While turned on,
the battery voltage can be displayed at any time by pressing the up or down arrow keys to
move through the display until the battery voltage screen appears. If, while operating, the
battery voltage drops below 6.4 volts, the display will automatically switch to the display
showing the battery voltage along with a low battery message. After a low battery occurs, the
unit will continue to operate for approximately 8 hours. When the battery voltage falls to
6.2 volts or below, the unit will automatically turn off.
Replace only with an approved 9-volt alkaline battery.
Approved 9-Volt Batteries
Eveready:
Energizer 522, EN22, 6LR61
Duracell:
MN1604
Panasonic:
6LR61, 6AM6X
Rayovac:
A1604
UltraLife:
U9V
