Handheld Multi Gas Detector Operating Instructions
Model: ZG9
Product Overview
Thank you for selecting ZG9 handheld multi gas detector. The ZG9 is designed to simultaneously measure
multiple gas concentrations in the ambient environment. With long-term data storage, the user can assess the
environmental friendliness. When ZG9 measures the gas concentration reaching the alarm setting or higher,
the data display and alarm functions are activated. ZG9 is equipped with an RS485 interface for connecting to
a computer for remote monitoring so as to reduce the risk of exposure to high concentrations of harmful
gases and avoid harm to human health. ZG9 can be used in a wide range of industries, which include
paint-related industries, wineries, related industries of CO2, food industry, laboratory, construction industry,
etc.
Features:
□
V
Dual beam NDIR (Non-Dispersive-Infrared) technology is used to measure CO
2
concentration and
improve the long term stability.
□
V
Measure CO
2
, CO, VOC, PM2.5, PM10, RH, DP, AMB, Barometer
□
V Large LCD for easy reading of gas concentration and temperature and humidity.
□
V
Audible alarm
□
V
Data logging with SD card
□
V Through the RS485 interface connection, multiple ZG9 units can be connected to the back-end computer
system as a security monitoring application.
□
V Built in the LCD backlight for easy reading in the dark.
□
V This device is supplied with Li- ion 18650 3.7V rechargeable batteries, can be used for a long time.
A. Power Key
B. Humidity Sensor
C. Temperature Sensor
D. LCD
E. Charge Lamp
F. M1 (Zone 1 Mode Key)
G. UP\TWA\STEL\Max\Min
H. M2 (Zone 2 Mode Key)
I. Enter
J. DOWN\ALTI
K. Log (Data Logger)
L. USB Socket
M. SD Card Slot
N. RS485 Jack
O. Battery Cover
P. Stand
Q. Screw Position R. Tripod Screw
Key description:
M1 (
○
F
)
Zone 1 sensor selection (CO
2
, CO, VOC, AMB)
M2 (
○
H
)
Zone 2 sensor selection (CO
2
, CO, VOC, RH, DP, AMB, PM2.5, PM10)
▲
(
○
G
)
TWA (CO
2
, 8-hr time weighted average), STEL (CO
2
, 15 min. weighted average), MAX, MIN
▼
(
○
J
)
ALTI (Atmospheric pressure)
Enter (
○
I
)
Execute a command or select options.
Log (
○
K
)
Data logger
LCD display symbol description:
Symbol Description
Basic
○
Optional
△
CO
2
concentration, parts per million (ppm)
○
CO concentration, parts per million (ppm)
○
VOC concentration, parts per billion (ppb)
○
PM2.5 dust concentration
(µg/m
3)
○
PM10 dust concentration (µg/m
3)
○
Battery capacity
○
Atmospheric pressure
○
Time weighted average (8 hours)
○
Short
Term Exposure Limit
(15 min. weighted average)
○
Maximum value
○
Minimum value
○
Ambient temperature
○
Relative humidity
○
Dew point
○
Real-time setting display
○
Year
display
○
High/low gas concentration calibration
○
High/low gas concentration alarm
○
Display cycle
○
SD card
○
Operation Instructions
Power on:
Switch the Power Key (
○
A
) on.
Measurement:
After power on, the device starts to measure and update the data every second.
Press the “
M1
” key (
○
F
) to switch the Zone 1 sensor display. (CO
2
CO
VOC
AMB)
Press the “
M2
” key (
○
H
) o switch the Zone 2 sensor display.
(CO
2
CO
VOC
RH
DP
AMB
PM2.5
PM10)
Backlight:
The backlight appears on the screen during startup and operation. After the device is idle for 30 seconds, the
backlight is automatically turned off to extend battery life.
Display all sensor readings
Press the “
M2
” key (
○
H
) for more than 3 seconds and the screen displays
. Zone 2 displays readings
of all sensors sequentially in time intervals. If you need to increase the display interval time, long press the
“
M2
” key (
○
H
).The interval time will automatically increase (1+0.5+0.5….. max. 10 seconds) , and release
the “
M2
” key (
○
H
), the readings will be displayed according to the last set interval. If press the “
M2
” key (
○
H
)
again for more than 3 seconds, the
function can be cancelled.
Real-time setting:
Long press the “
M1
” key (
○
F
) to proceed the date and time setting. The default format is 24-hour. Press the
“
▲
(
○
G
)/
▼
(
○
J
)” key to edit the parameters, and press the “
Enter
” key (
○
I
) to proceed the next setting. The
setting sequence is: year
month
date
hour
minute. After finishing the real-time setting, press the “
M1
”
key (
○
F
) to continue the alarm setting.
Alarm settings:
The setting order of the sensors is CO
2
CO
VOC
PM2.5
PM10. Press the "Enter" key (
○
I
) to switch
the high/low gas concentration alarm setting. Press “
▲
(
○
G
)/
▼
(
○
J
)” key to edit the parameters, and then
press the “
M1
” key (
○
F
) to proceed the next sensor alarm value settings. After settings, press and hold the
“
M1
” key (
○
F
) to return to the main screen.
Sensor warm-up time and logging Interval:
Data logging:
Press the “
Log
” key (
○
K
) for 3 seconds and the screen displays
to start the data logging function. If long
press the “
Log
” key (
○
K
),this function can be canceled. When
flashes, it means that the SD card is
broken or full; when
remains stationary, it indicates normal operation.
Data logging interval time setting:
The default interval time is 00:02 (2 seconds). Press the “
Log
” key (
○
K
) for more than 3 seconds and then the
interval time will automatically increase. The interval time, loop display, ranges from 00:02 seconds to 60:00
minutes and then back to 00:02 seconds.
≦
The interval time 5 minutes, the buzzer on/off switch is controlled
by the “
Enter
” key (
○
I
)
≧
; the interval time is 5 minutes, the buzzer is off.
°C/°F
switch:
When the temperature is displayed on the screen, press the "
▲
" key (
○
G
) to switch
°
C/°F.
Atmospheric pressure display:
Press "
▼
" key (
○
J
), and then press "
▲
" key (
○
G
) to select
Altitude (M)
Altitude (ft)
Barometer
(mmHg)
. The display returns to the main screen after 10 seconds.
Atmospheric pressure compensation:
Press and hold the "
▼
" key (
○
J
) to turn the compensation function on/off. The gas compensation is only for
CO
2.
Buzzer on/off:
Press the “
Enter
” key (
○
I
) to turn the buzzer on/off. During
operation, if
AL L
or
AL H
buzzer
sounds,
stops to operate. At this time, press the “
Enter
” key (
○
I
) to turn off the buzzer and
continue
. In addition, the buzzer will be automatically turned off when the data logging interval time
is
≧
5 minutes.
Buzzer AL L/AL H:
When
AL L
is on, the buzzer sounds "Ta Ta Ta"; when
AL H
is on, the buzzer sounds "Bi Bi Bi".
No. Sensor Warm-up
time
Data logging interval time setting
After powering on and standby time,
data logging can be operated.
Data logging interval
time setting
1 CO
2
＜
1 minute
After power on 5 minutes
2
seconds~60
minutes
2
CO
5 minutes
After power on 5 minutes
2 seconds~60 minutes
3
VOC
5~15 minutes
After power on 20 minutes
2 seconds~10 minutes
4
PM2.5
PM10
＜
1 minute
After power on 5 minutes
2
seconds~60
minutes
(Display Features and Modes)
