Operation
N
2
O Portable Monitor
10
Instruction 3015-4787
3.8 Battery – Charging and Using
3.8.1 Charging the Battery
The monitor is powered by a rechargeable battery pack located in a pouch on the side of the monitor’s soft
carrying case. The battery pack can be recharged at any time, regardless of the battery’s current charge state.
The AC adapter provided accepts voltage inputs of 100 to 240 VAC. Plug the adapter into the wall, then into
the battery. Disconnect the adapter when the battery is fully charged. A fully charged battery pack will power
the monitor for approximately 8-12 hours.
3.8.2 Using the Battery
The PAGM is designed for a 16VDC input. Following the instructions for the particular battery in use, set the
output voltage to 16V. Plug the battery into the instrument's battery input port and the instrument is ready for
use.
3.9 Display Screens
3.9.1 Initial Power ON
When the monitor is first powered ON, all front panel lights turn ON and a splash screen appears showing
the monitor’s current firmware revision level. After a brief moment the
Warm Up
screen is displayed
along with the front panel
ON
light (green) blinking.
The monitor requires 15 minutes to warm up from a cold start; after which, the
ON
light glows steady and
the
Data Display
screen appears.
If the monitor is turned OFF and then turned back ON, the latter warm-up time may be less than
15 minutes depending on the temperature of the IR detector.
3.9.2 Filling the Purge-Air Bag
CAUTION:
Fill the purge-air bag in a clean, fresh-air environment that is at the
same temperature and humidity as the area being checked for gas. DO NOT fill the
bag in an area that is contaminated with N
2
O gas.
The following message is displayed and an audible alarm is sounded when the monitor’s purge-air bag is
empty. This message appears immediately after warm-up, and approximately every 40 minutes during
normal operation. Press the
ENTER
button to start the refill process.
After the air bag has been filled, the monitor starts or resumes normal operation by displaying the
Data Display
screen.
3.9.3 Data Display Screen
BACHARACH
VERSION x.xx
WARM UP
MEASURE 2ndUNIT
100ppm N2O
PURGE 2ndUNIT
100ppm N2O
PURGE AIR EMPTY
<ENTER> TO FILL
RECHARGING PURGE
AIR...
