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Wall-mount type of Air Quality Detector 

Model: GTF300-AQ and GTF300-VOC

 

GASTECH is a professional manufacturer in various gas detectors, carbon monoxide detector, carbon dioxide detector, 
oxygen detector, odor detector, VOC detector, hydrogen sulfide detector and carbon monoxide detector. Welcome tour 
our website 

www.gastech.com.tw 

M O D E L … A 0 3 

GTF300-AQ-A 

1. Power on display

 

After power on, the GTF300-AQ/VOC gas detector will display a series of messages, including welcome, model 

no and CIAQ (Composite Index of Air Quality). 

 
WELCOME 
 

 

 

Show the model no. (Show it at power on only.) 
GTF300-AQ-A and GTF300-VOC-A are a standard type with 4 ~ 20 mA analog output. 
GTF300-AQ-R and GTF300-VOC-R are an optional type with relay output. 
 

 
It’s warming up now, please wait. (Show it at power on only.) 
 
 
 
 

GTF300-AQ/VOC can detect hydrocarbon compounds in the air, especially high sensitive 

of hydrogen and transfer the CIAQ (Composite Index of Air Quality) shown on the display. 

CIAQ define fresh air and/or zero air is "1". According to concentration of hydrocarbon 

compounds and hydrogen in the air, the more pollution exists the higher CIAQ will show. 

 

2. Settings 

The following operating procedure describes the settings. In the operation, press NEXT key or idle 3 minutes, the 
display will back to the CIAQ. 

 
 
In the display, press NEXT key to enter next function. 
 
 
 
In the display, press ADJ key, the buzzer and flash lamp will action. Press ADJ key again, 
they will stop. 

(The relay will make action in TEST ALARM also, if detector model has 

relay output.) 

Press NEXT key to enter next function. 
 
In the display, press ADJ key, to reset the buzzer high limit. The last words of last row 
might show UP, press ADJ key will increase the setting limit. Press UPDN key, the word 
will change to DN; press ADJ key will decrease the setting limit. 
Press NEXT key to enter next function. 
 
In the display, press ADJ key, to reset the flash high limit. The last words of last row might 
show UP, press ADJ key will increase the setting limit. Press UPDN key, the word will 
change to DN; press ADJ key will decrease the setting limit. 
Press NEXT key to enter next function. 

G A S T E C H 

W E L C O M E 

WARMING-UP 

WAIT…. 

TEST ALARM

 

Buzzer Limit 

CIAQ 70    UP 

Flash Limit 

CIAQ 50    UP 

CIAQ     1

 

 

CIAQ    1

 

 

Содержание GTF300-AQ

Страница 1: ...ad the Security Notifications in detail firstly 2 The gas detector might install on wall or steel plate please refer following drawing to make marking then drill the holes Do not use the gas detector as a drilling template to avoid fault 3 Due to the space is very small that is impossible to use wrench Therefore to use female expansion bolts on the wall or tap female screws on the steel plate and ...

Страница 2: ...te www gastech com tw 2 4 Analog output A recommend fuse is 0 2 A in the above 5 Relay output A recommend fuse is 0 2 A the diode could be 1N4002 or 1N4004 in the above 6 In order to meet waterproof the wiring material and parts should be met the requirement also 7 The wiring size is not less 0 5 mm 2 or 20 AWG In the case of long distance wiring to apply bigger size or 30 VDC power is better 8 Th...

Страница 3: ...t sensor Semiconductor target GTF300 AQ hydrogen ethanol isobutene etc GTF300 VOC toluene xylene alcohol ammonia etc sampling method diffusion measure range 1 200 CIAQ Composite Index of Air Quality Refer GASTECH calibration curves or make them by user Resolution accuracy sampling time 1 CIAQ continuity alarm level high alarm resetable analog output 4 20 mA max load resistance 500 ohm N A relay ou...

Страница 4: ...concentration of hydrocarbon compounds and hydrogen in the air the more pollution exists the higher CIAQ will show 2 Settings The following operating procedure describes the settings In the operation press NEXT key or idle 3 minutes the display will back to the CIAQ In the display press NEXT key to enter next function In the display press ADJ key the buzzer and flash lamp will action Press ADJ key...

Страница 5: ...enter calibration function Press NEXT key to jump calibration function and enter next function Warning Except necessary do not execute calibration It is necessary to execute calibration after power on 7 days An error operating should loss accuracy In the display user has to finish calibration Press ADJ key to meet ambience CIAQ In the fresh air 1 is a recommended value But in some place user might...

Страница 6: ...uzzer high limit the detector not only has audible alarm but also provide clear alphanumeric alarm message for users It is the CIAQ high alarm display Press NEXT key the buzzer will mute and the display will back to the normal display If the CIAQ is still higher than buzzer high limit this message and audible alarm will come again that will disappear until the CIAQ is lower than the buzzer high li...

Страница 7: ...e of scent sense good but some persons might not accept the smell Although everybody has various different sense of smell that cannot define Anyway the smell depends on the concentration of hydrocarbon compounds in the air 5 2 Smoke detecting GTF300 AQ VOC is very sensitive of hydrogen which generated from smoking or incomplete combustion Therefore GTF300 AQ VOC is suitable for air conditioner man...

Страница 8: ...fusion or high concentration that out of CIAQ range dilute detection is possible put GTF300 AQ VOC in the bottle and takes the sample gases then inject bottle and read the CIAQ Neither diffusion or dilute Silicon compounds gases is not suitable to use GTF300 AQ VOC e g SiH4 5 6 The best partner of canary People knew apply canary to detect unknown gas or toxic gas since long ago Canary will die whi...

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