RKI Instruments GP-01 with self resetting alarms - Manual (Page 12)

12 • Description Model GP-01 Operator’s Manual
NOTE: The printed circuit boards contain no user serviceable parts.
Alarm Lights
The Model GP-01 has two red LED alarm lights. They alert you to
combustible gas, low battery, and sensor failure alarms. The smaller of the
two lights is square, has a frosted plastic cover, and is located at the top of
the unit to the left of the membrane retainer. The larger alarm light is
rectangular in shape, has a diamond-grid pattern etched into the plastic
cover, and is located to the left of the LCD on the front of the case.
Buzzer
A solid-state electronic buzzer is mounted inside the Model GP-01. An
opening in the sensor retainer on top of the case allows the buzzer’s sound
to emanate from the case. The buzzer sounds for gas alarms, unit
malfunctions, and dead battery alarm. It also serves as an indicator during
normal use of the various LCD display options.
Vibrator
A vibrating motor (vibrator) is mounted inside the Model GP-01. The
vibrator vibrates momentarily during the power-up sequence and for gas
alarms.
Batteries
Two AAA-size alkaline batteries (standard) or an optional rechargeable Ni-
cad battery pack (2.4VDC) run the Model GP-01. Instrument run time is
dependent upon battery type. At 25°C the alkaline batteries last up to 16
hours, and the Ni-cad battery pack lasts up to 8 hours. The battery icon on
the LCD shows remaining battery life.
When the Model GP-01 detects low battery voltage, a low battery warning
is activated. When battery voltage is too low for normal operation, the
Model GP-01 sounds a dead battery alarm.
The alkaline batteries or the Ni-cad battery pack can be replaced by
removing the battery door at the bottom of the case. Turn the captive
battery cover screw counterclockwise to release the door.
The Ni-cad battery pack can be recharged by placing the Model GP-01 in
its optional battery charging station.
WARNING: To prevent ignition of a hazardous atmosphere, batteries
must only be changed or charged in an area known to be
nonhazardous.