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Wall-mount type of Carbon Dioxide Detector
Flash H. L.
1100 ppm UP
Flash L. L.
350 ppm UP
Relay A. L.
950 ppm UP
Relay R. L.
800 ppm UP
C. Dioxide
Cal. Zero?
<UPDN> + <ADJ>
Analog Output
Calibration ?
<UPDN> + <ADJ>
Calibration
4 mA UP
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
Model: GTF220
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.
In the display, press ADJ key, to reset the flash low 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 relay action 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.
Note: this function is available in relay output model only.
Press NEXT key to enter next function.
In the display, press ADJ key, to reset the relay release 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.
Note: this function is available in relay output model only.
Press NEXT key to enter next function.
In the display, if press UPDN and ADJ key at the same time, the detector will execute
calibration function. The calibration will take 10 minutes in the period time; here the
detectors will access the lowest detecting value to make a basis of 350 ppm of carbon
dioxide.
In order to get good basis and to avoid the breath affect consequence, the operators
have to leave and come back again after 10 minutes. It is necessary to provide a fresh air
condition while the period time; if not, user have to prepare the standard air (CO2=350ppm,
O2=21 vol.% and N2=79 vol.%).
concentration of carbon dioxide.
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, press UPDN and ADJ keys at same time, to enter calibration function.
Before the calibration, user needs prepare an ampere meter and makes series into analog
current loop.
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 24 hr. An error operating should loss accuracy.
Note: this function is available in analog output model only.
In the display, user has to finish calibration.
The last words of last row might show UP, press ADJ key will increase the
current output. Press UPDN key, the word will change to DN; press ADJ key
will decrease the current output.
Press NEXT key to finish calibration of 4 mA and enter next function.
After completing calibration, the display will back to the
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