Bacharach Halogen Monitor Instruction - 2.10 Gas Alarm
Operation
Halogen Monitor
12
Instruction 3015-4584 Rev 9
GAS
–
Used to select one of any of the gas types available for
monitoring. Factory default is R-134A. Note that the factory can
program a custom gas type as specified on the sales order. Use the
Keypad to select the desired gas type, and then press ENTER to save
the selection and return to the previous screen.
CLOCK
– Sets the monitor’s date and time. Use the
Keypad
to enter
the correct date and time, and then press
ENTER
to save those values
and return to the previous screen. Note that time is displayed in a
24 hour format, while the date is displayed as mm/dd/yy.
2ndUNIT
– One of following second measurements can be selected
to appear in the upper-right hand corner of the
Data Display
Screen:
•
NONE
– Blank
•
Peak PPM
– Peak gas reading
•
Cont twa
– Time Weighted Average calculated on a continuous basis
•
8hr TWA
– Time Weighted Average calculated over an 8 hour period
– Refer to Section 2.16
Print/Plot Logged Gas Levels
on page 17
.
PLOT
– Refer to Section 2.16
Print/Plot Logged Gas Levels
on page 17.
PC-DUMP
– A personal computer can be connected to the monitor’s
DB9 RS-232 connector for the purpose of downloading logged ppm
measurements. These measurements can later be analyzed using any
common spreadsheet program. Refer to Section 2.17
Downloading
Stored Data to a Personal Computer
on page 18 for detailed instructions
on how to transfer stored data to a personal computer.
2.10 Gas Alarm
2.10.1 Gas-Alarm Light
If the detected gas level reaches one the gas-alarm levels as set by the
LEAKLVL
,
SPILLLVL
, or
EVACLVL
functions, the front panel
ALARM
light will flash and the audible alarm, if activated (refer to
AUDALRM
function page 10), will start beeping. The
ALARM
light and audible alarm will automatically
turn OFF once the detected gas level drops below the gas-alarm level.
2.10.2 Silencing a Gas Alarm
Pressing the
SILENCE
button while the alarm circuit is activated causes the internal audible alarm to turn
OFF for a period of time as set by the
SILENCE
function (page 11). The front panel
ALARM
light will
continue to flash, however, as an indication that an alarm condition still exists. The audible alarm will
reactivate at the end of the silence period if the detected gas level is still above the gas-alarm level.
2.10.3 Viewing the Gas Alarm Log
From the
Data Display
screen, press any of
the
Keypad
buttons to display the first
Function Menu
screen. Next, use the
Keypad
buttons to move the arrow (>) until it points to the
ALARMS
function, and
then press the
ENTER
button to display the
Alarm
Log
screen.
SET DATE & TIME
07/11/05 15:30
SELECT GAS TYPE
R134A
MEASURE 00500pk
100ppm SF6
2ndUNI >PRINT
PLOT PC-DUMP
2ndUNIT PRINT
>PLOT PC-DUMP
2ndUNIT PRINT
PLOT >PC-DUMP