AQ COMFORT Instruction & Operations Manual
Version 1.01
Page 12 of 44
CHAPTER 4
POWER REQUIREMENTS
The E Instruments AQ COMFORT Indoor Air Quality Monitor is a battery
operated Portable device designed to be operated by a qualified engineer/technician to
make measurements in buildings and residential facilities. For long-term testing please
carefully follow the product safety instructions in Chapter 1.
Power is supplied by a Li-Ion rechargeable battery pack. The battery pack will supply
power to the monitor for about at least 8 hours of continuous operation.
A 110 – 240 Volt AC charger having a 12 Volt DC / 2.5A output is supplied with the
instrument. The battery charger will fully charge the battery pack in three hours.
You can check the condition of the batteries at any time:
1. By pressing the
MEASURE
key, (small font screen) and observing the battery
icon, located at the bottom of the display.
2. By pressing the
MEASURE
key, (large font screen), the user can scroll all
the way to the end using the
DOWN
arrow key to observe the battery life
shown in Voltage. When the unit is operating on its internal batteries, the
voltage displayed will vary from an initial 8.0 to 8.4 volts (fully charged) dropping
slowly to approximately 7 volts (batteries nearly empty). When the battery voltage
drops to 7.1 volts a “low battery” warning will appear on the display. Within a few
minutes later the instrument will automatically turn off, to preserve the remaining
battery power for the sensor bias voltages.
Battery Charger
Connected
Battery Full
Battery Empty
