RKI Instruments GasWatch 1 - Manual (Page 7)

GasWatch Instruction Manual (Two-Gas) Description • 3
Control Buttons
The control buttons are below the display screen.Table 2 lists the function of each button.
Batteries
The GasWatch is powered by two zinc air batteries. The button-type batteries are installed
in the battery compartment. You can access the battery compartment through a removable
door in the back of the GasWatch. The batteries will run the GasWatch for approximately
720 hours of continuous operation without alarms or use of the display back light.
NOTE: Frequent alarms and use of the back light feature reduce the life span of the
batteries.
Zinc air batteries work by reacting with air. RKI Instruments, Inc., ships replacement
batteries with a protective sticker, which covers the battery’s air diffusion holes. When the
protective sticker is removed, the battery will last three months whether or not it is used.
If the battery is used, it may last less than three months from the time you remove the
sticker.
Wrist Strap
The wrist strap allows you to wear the GasWatch and leaves your hands free to perform
other tasks. The wrist strap is attached to the back of the GasWatch and includes a velcro
section to secure the GasWach during operation.
NOTE: You can replace the wrist strap with an optional arm strap that you wear on your
upper arm. See “Accessories” on page 13 to install the arm strap.
Table 2: GasWatch Button Functions
Button Function
MODE/POWER • turns GasWatch on and off
• turns display back light on and off
• displays peaks readings
• resets alarm circuit (gas alarms)
• enters calibration mode (with AIR button)
• enters alarm adjustment mode (with AIR button)
• enters time/date adjustment mode (with DISP button)
DISP • displays “second” target gas
• enters time/date adjustment mode
(with MODE/POWER button)
AIR • adjusts the display reading to 0 (20.9 for O
2
)
• enters calibration mode (with MODE/POWER button)
• enters alarm adjustment mode (with MODE/POWER button)