5
Item
Component name
Description/Function
1
POWER button
Press and hold to turn on/off the detector
2
AL button
(to check the alarm set
values)
Each press cycles through “1
st
stage alarm set
value”, “2
nd
stage alarm set value”, and current
gas concentration value on the LCD
3
BZ.STOP button
Press to mute the alarm audio
4
ZERO button
Press and hold to perform a zero adjustment
5
CN connector
Connects to the CA-7 communication adapter
(sold separately) to collect logging data
6
Logger button
Used for data logging
7
▲
(
UP) and
▼
(
DOWN)
buttons
Used for settings (e.g., log starting time entry)
LCD
Flow rate low icon
Lights up when flow
rate is low
Sensor fault icon
Lit when a sensor fault is detected
Flow rate icon
Spins during normal operation and stops when
flow rate is low
Gas concentration on bar graph
One bar represents 5% of the full scale value.
The bar graph value increases from left to right
with the far right being full scale value
Numeric gas concentration
1
st
and 2
nd
stage gas alarm icons
Lights up when the gas
level reaches preset
alarm value
Battery level indicator
Full
Empty (flashing)
Logging icon
Lit when data logging is in progress.
Operation buttons
(behind the front cover)
4
4 Unit Components
Item
Component name
Description/Function
1
Green POWER LED
Lit while in normal operation mode (gas-monitoring
mode) and flashes while in warm-up cycle
2
Amber TROUBLE LED Flashing indicates an internal failure is present
3
Red ALARM LED
When the gas concentration level exceeds the 1
st
stage alarm set value, the ALARM LED starts
flashing, and when it exceeds the 2
nd
stage alarm set
value, the ALARM LED flashes faster
4 LCD
Displays alarm notification, numeric gas concentration
value, gas concentration on bar graph, sensor fault
status, flow rate status, and battery level
5
Front cover
Pull by holding it by the sides, then slide down to
access the operation buttons
6
Audio opening
Open for audio
7
Gas inlet port
Connects to the gas sampling tube. Outside dia.6mm
8
Gas outlet port
Discharges sampled gas. Outside dia.6mm
9
Adapter connector
Connects to a dedicated 100-240VAC/6VDC adapter
10 Battery cover
Cover for battery compartment
11 Sensor cover
Open for sensor unit installation
12 Sensor window
Check the sensor unit inside thru this window
13 Red battery LED
(behind the front cover)
Lights up when batteries are installed and the
brightness increases when the battery is close to
empty. Lights up when the cover is open while the
detector is off
Main unit
5
Item
Component name
Description/Function
1
POWER button
Press and hold to turn on/off the detector
2
AL button
(to check the alarm set
values)
Each press cycles through “1
st
stage alarm set
value”, “2
nd
stage alarm set value”, and current
gas concentration value on the LCD
3
BZ.STOP button
Press to mute the alarm audio
4
ZERO button
Press and hold to perform a zero adjustment
5
CN connector
Connects to the CA-7 communication adapter
(sold separately) to collect logging data
6
Logger button
Used for data logging
7
▲
(
UP) and
▼
(
DOWN)
buttons
Used for settings (e.g., log starting time entry)
LCD
Flow rate low icon
Lights up when flow
rate is low
Sensor fault icon
Lit when a sensor fault is detected
Flow rate icon
Spins during normal operation and stops when
flow rate is low
Gas concentration on bar graph
One bar represents 5% of the full scale value.
The bar graph value increases from left to right
with the far right being full scale value
Numeric gas concentration
1
st
and 2
nd
stage gas alarm icons
Lights up when the gas
level reaches preset
alarm value
Battery level indicator
Full
Empty (flashing)
Logging icon
Lit when data logging is in progress.
Operation buttons
(behind the front cover)
4
4 Unit Components
Item
Component name
Description/Function
1
Green POWER LED
Lit while in normal operation mode (gas-monitoring
mode) and flashes while in warm-up cycle
2
Amber TROUBLE LED Flashing indicates an internal failure is present
3
Red ALARM LED
When the gas concentration level exceeds the 1
st
stage alarm set value, the ALARM LED starts
flashing, and when it exceeds the 2
nd
stage alarm set
value, the ALARM LED flashes faster
4 LCD
Displays alarm notification, numeric gas concentration
value, gas concentration on bar graph, sensor fault
status, flow rate status, and battery level
5
Front cover
Pull by holding it by the sides, then slide down to
access the operation buttons
6
Audio opening
Open for audio
7
Gas inlet port
Connects to the gas sampling tube. Outside dia.6mm
8
Gas outlet port
Discharges sampled gas. Outside dia.6mm
9
Adapter connector
Connects to a dedicated 100-240VAC/6VDC adapter
10 Battery cover
Cover for battery compartment
11 Sensor cover
Open for sensor unit installation
12 Sensor window
Check the sensor unit inside thru this window
13 Red battery LED
(behind the front cover)
Lights up when batteries are installed and the
brightness increases when the battery is close to
empty. Lights up when the cover is open while the
detector is off
Main unit
