International Gas Detectors POR-MULT User manual

V1.0 Document Reference: POR-M U LT
Portable Multi-Gas
Detector User Manual
International Gas Detectors Ltd
ISO9001:2015

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Brief Introduction
Our multi-gas detector can detect up
to four gases continuously and
simultaneously. Our portables are
widely used in non-ATEX
environments. Clients are also
adopting the use of portable gas
detectors as alarm verification tools in
conjunction with fixed gas detectors,
as an extra level of safety.
1. Main features
* Natural diffusion sampling method
and high-sensitivity sensor, with a
high sensitivity and repeatability.
* 32-bit built-in MCU, high reliability and self-adaptation ability.
* Full functions, easy operation.
* Multi-Coloured LCD, more intuitionistic, abundant and clear
indication.
* Compact lightweight and durable design.
* High strength engineering plastics and compound anti-slippery
rubber; high strength, water-proof, dust-proof and explosion-proof.
*500 data records, can be connected to a computer via software.
2. Structure & Function
2.1 Appearance

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Fig. A
3. Technical Data (for standard gases, consult IGD for other
ranges reference on the datasheet).
Target Gas Range Low alarm High alarm Resolution
LEL 0～100%LEL
20%LEL 50%LEL 1%LEL
H2S 0～10ppm 5ppm 10ppm 1ppm
CO 0～100pm 20ppm 55ppm 1ppm
O20～30%vol 19.5%vol 23%vol 0.1%vol
If other gases are required, please contact IGD (email below).
Gas sampling method: Natural diffusion
Detecting gas: Over 30 gases available, see datasheet.
Accuracy: ≤±5% F.S.
Response Time: ≤30s
Indication: LCD displays real-time and system status;
LED, audio and vibration alert for gas leakage, fault and low
voltage.
No.
Name
No.
Name
1
Alarm light
4
Buzzer
2
Button
5
Sensors
3
LCD screen

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Working environment: -20℃～50℃, ＜95%RH (no dew)
Power Source: DC3.7V Li-on battery, 2000mAh
Charging time: 6h~8h
Working time: ≥ 8h continuously (without alarming)
Gas Sensor Life: 2 years
Protection Grade: IP65
Weight: Appr. 400g (with battery)
Dimensions: 130mm×67mm×30mm(L × W × H)
4. Operation & Function
4.1 Turn on
Press the button for 3s and then release it. After the buzzer
gives short sound once, the detector is turned on. After 30 seconds,
it enters detecting status. During this time, it displays the
concentration of the gases, [note: for example, purposes this is: O2,
H2S, CO and Combustible gas] in the environment as shown in
figure 1.
Fig.1
4.2 Turn off
Under the Menu status, press button for more than 3s. The
21:18:04 44%
O2 20.9%VOL
Ex 0%LEL
H2S 0PPM
CO 0PPM
2018-12-28
RECORD MENU CURVE

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buzzer issues a "beep" sound. The LCD screen prompts the user
to shut down the interface shown in figure 2, the user through the
▲▼keys to select whether to shut down. If you choose to shut
down, the screen no longer displays any information, and will shut
down.
Fig. 2
4.3 Button function
Detector in the normal detection state as shown in figure 1:
Press any key to operate the back light (user can set back light
time)
Press " " key to enter the menu;
Press "▲" key to enter the alarm record;
Press "▼" key to enter the gas concentration curve display
interface;
4.3.1 If gas concentration is below the first alarm level for all gases
except Oxygen, the detector is in normal state and no alarms will
occur.
21:18:04 40%
SHUT DOWN
YES NO

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4.3.2 When the detected gas concentration is higher than the pre-
set low alarm value and less than the high alarm value [Note: when
the oxygen concentration is lower than the low alarm value], the
detector is in a low alarm state. The audible alarm will sound, the
red-light flashes synchronously, and the gas concentration value
on the screen changes the colour to yellow. In addition to this, the
back light is illuminated, and the vibrator is also activated, to
indicate low alarm; press " " key to mute, but the alarm will still
be displayed. If a new alarm is triggered, the buzzer is resumed
and the alarm light, the vibrator is re-activated. When the detector
detects the gas concentration has fallen below the low alarm value,
the gas concentration value colour turns green, the alarm signal will
be released automatically. Alarm state shown in Figure 4.
Fig. 4
.

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4.3.3 When the detected gas concentration is higher than the pre-
set high alarm value, the detector is in the high alarm state. Audible
visual alarm will sound continuously. The red indicator light flashes
synchronously, plus the change of the gas concentration value is
displayed on the screen. The text colour turns red, the back light
and the vibrator are also activated.
Press " " key to mute, but still display alarm information. If a new
alarm is triggered, the buzzer is resumed and the alarm light and
vibrator is restored. When the detector detects the gas
concentration value below the low alarm value, the gas
concentration value colour turns green, the alarm signal will be
automatically released. High Alarm state shown in Figure 5.
Fig 5.

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4.3.4 When the detected gas concentration is higher than the
sensor range, the audible visual alarm is activated and the LCD
screen is on, the vibrator is activated, and the screen will display
the maximum range of gas, indicating over range. Press the " "
key to release the alarm.
4. 3.5 Normal monitoring interface under the first line shows the
time, alarm signs ( it occurs when there is alarm, yellow colour
with low alarm, red colour with high alarm), the buzzer instructions
(normal , mute ), battery percentage, battery power, date and
temperature.
Note: The alarm sound above can be manually muted by pressing
the " " key. After muting, the alarm information is still displayed
normally. If the alarm is triggered again, the corresponding alarm
sound will activate.
4.4 Use and set functions
The detector has the following settings:
- a total of alarm record function,
- gas concentration curve display,
- gas parameters setting,
- calibration,
- zero calibration,
- language settings,

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- information viewing,
- back light settings,
- time settings.
Press the " " button to enter the menu selection, in the menu
move the cursor to “ESC”, then press " " to return to the normal
monitoring display as shown in Figure 6.
Fig. 6
4.4.1 Alarm record and alarm curve
a. Alarm Record Function:
On the detectors the main interface, press ▲to enter the alarm
recording interface. The record includes the alarm sensor name,
alarm type, alarm value, alarm time. As shown in Figure 7. This
feature can view the gas alarm history, for easy checking.

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Figure 7.
Sensor
Type
Value
No.
Remark
O2
↑
(H)
30
1/4(Current/Total)
Ex
↑
(H)
29
2/4(Current/Total)
H2S
↑
(H)
20
3/4(Current/Total)
CO
↓
(L)
25
4/4(Current/Total)
2016-06-16 12:15:35 Alarm time
The maximum number of alarm records (logs) is 500.
b. Curve display function:
On the main interface, press the ▼to enter the curve display
interface, use the ▲▼button to view each sensor gas
concentration curve. On the portable detector, each sensor has a
curve display.
Oxygen as an example:
Fig.7
21:18:04 29%
O2 20.9%VOL
High 23.5%VOL
Low 19.5%VOL
Description
The X axis is the time, the
current record displays 9s of the
curve
The vertical axis Y is the sensor
value.
Note: the axis and the data are green, the data curve is blue, the
low alarm line is yellow, high alarm line is red.

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4.4.2 Detector menu settings
In the normal detection mode, press " " key to enter the menu,
then press ▲▼key to select the setting of gas parameters,
calibration, calibration zero, language settings, information view,
back light settings, time setting function. The menu function is as
follows:
Description
Operation
Return
Press
▲
▼
key to move the cursor to the return
function, press "
" to return to the main
interface.
Setting
Sensor parameters can be set including; the
units, high alarm and low alarm.
Calibration
Can be calibrated for the sensors
Zero
Zero calibration
Language
Choose language
Information
Software version and date of manufacture
Back light
Setting the time of back light
Time set
Set the date and the time
4.4.3 Parameter setting of the detector

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Display
Description
Fig.8 Fig.9
1. Move the cursor to set and press " " to
enter set interface, input four passwords, as
shown in Figure 8, the user can press " " to
move the cursor, input the password by ▲▼
key, sensor parameters as shown in Figure 9.
Fig.10 Fig.11
2. Gas parameters setting
Parameter settings include;
unit select, high
alarm and low alarm. As an example with Ex,
as shown in Figure 10, use the ▲▼
key to
select the gas type (Ex), press the to enter
Ex gas parameter settings, [as shown in Figure
11], use the▲▼key to modify the parameter,
after done, press the return.
If no special requirements, alarm value
parameters should not be modified.
Fig. 12
3. Zero Calibration
In the menu function interface, select the Zero,
press" " key to enter the password interface
shown in Figure 12, input the correct
password, the same need to select the zero
gas type, still with Ex as an example shown in
Figure 13, Press the " " key to move the
cursor, use the ▲▼key to modify the zero

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Fig. 13
Fig. 14
parameter value, as shown in Figure 14,
modify the cursor to move to the last press the
▼key to return to the previous menu.
Warning: 1. zero calibration, please ensure you
use Nitrogen/Instrument Air
, otherwise will
affect the accuracy of gas detector.
2. the detector has been calibrated with
standard gas in factory, the user should not
operate this.
Fig.15
4. Language
In the menu function interface, select the
language, press the " " key, you can see the
interface shown in Figure 15, through the ▲▼
key to move the cursor to select language.
Fig.16
5. Information
In the menu function interface, select the
information, press the " " key, you can see
the product information shown in Figure 16,
including software version, factory date.
Fig.17
6. Back light
In the menu function interface, select the light,
enter the back-light settings interface as shown
in Figure 17, press the " " key to move the
cursor, use the▲▼key to set the seconds, the
maximum can be set to 120s.

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Fig. 18
7. Time set
In the menu function interface, select the time,
enter it as shown in the figure 18, press the "
" key to move the cursor, use the▲▼key
to set the current system time, press the▼key
return to the main menu.
4.5. Charging
Please charge the detector when it shows low battery, or the
detector cannot be turned on due to low battery. Before charging,
please turn off the detector. After you connect the charger correctly
between the detector and AC power source, the detector will be
turned on automatically. When the battery mark on the screen is full
and does not change any more, it means the charging is
completed. Disconnect when charging is complete.
Warning:
Please do not charge it when the detector is
working to avoid potential damage.
Note: Make sure full charge for at least once within 3 months
since production date.
5. Possible fault and corresponding solution
Possible fault
Possible reason
Corresponding solution
The detector
cannot be turned
on
Too low battery
Please charge
The sensor failure
Please contact IGD
Fault of electric circuit
Please contact IGD
No response to
the gas
Warm up is not
finished
Wait till warm up is
finished
Fault of electric circuit
Please contact IGD

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Inaccurate
indication
Sensor is overdue
service and
calibration
Please contact IGD for
service and calibration
No bump test
performed
Bump test and zero the
sensor.
Fault indication
of time
Battery voltage is
used up
Please charge it and reset
time
Strong
electromagnetism
disturbance
Please reset time
Zero calibration
is unavailable
Too much zero drift of
gas sensor
Please calibrate or
replace the gas sensor
Minus gas level
displayed
Gas sensor drift
Calibrate zero point
Sensor fault
indication
Sensor fault
Please contact the
manufacturer or dealer to
replace the gas senor
6. Notices
6.1 Do not drop from height or expose to vibration.
6.2 The detector may not work properly if exposed to high
concentration of gas.
6.3 To avoid incorrect result or possible damage to the detector,
please operate and handle the detector in accordance with the
manual.
6.4 The detector should not be stored or used under the
circumstance with caustic gas (such as Cl2), nor under other
rugged circumstances, including excessive high or low
temperature, high humidity, electromagnetic field.
6.5 If there is dust on the surface of the detector after a long-term
use, please clean it lightly with clean soft cloth. The surface may be
scraped or destroyed with caustic solvent or abrasive materials.
6.6 To assure the testing accuracy, the detector should be

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calibrated every six months and bump tested before and after use.
6.7 Please dispose of the used Lithium batteries to the appointed
places or send to our company. Do not discard them into the
general waste.
7. Standard accessories supplied:
•Metal Carrier/Storage Case
•Charger and adapter
•Calibration adapter
•USB Cable
•User manual
•After sales service card
•Calibration Certificate
•12month warranty

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International Gas Detectors Ltd
Triton House
Crosby Street
Stockport
Manchester
United Kingdom
SK2 6SH
Tel: [phone]
E-mail: [e-mail]
Website: www.internationalgasdetectors.com