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M-GDA-4350 V12 Rev 1.1

2. Sensor Placement

The sensor is rated IP50 and therefore suitable for indoor use only. If it is going to be used in 
external environments seek specialist advice from GDA. The sensor should not be exposed to 
steam or saturated water vapour. 

Carbon Dioxide is heavier than air and therefore will (if there is no air movement) fall to lower 
levels. The recommended minimum installation height above the floor is 300mm. 

Mount the sensor as close as possible to where the leak of the gas being detecting may occur 
as the distance from a potential leek effects the time taken to detect it. The further from the 
potential leeks the more the gas will be diluted. Take into account drafts and air movements 
when mounting the sensor. 

Fit using the four fixing holes in the corners of the box. When drilling avoid any vibration of the 
sensor unit. The laser diode sensing unit is very sensitive. 

Do not expose the sensor to any 

mechanical shock.

  

IT IS VERY IMPORTANT THAT THE GDA 4350 IS INSTALLED IN THE MOST UPRIGHT 
POSITION AGAINST A VERTICAL STRUCTURE. 

YES (Recommended) 

NO 

NO 

 

For other mounting positions other than recommended please contact Gas Detection 
(Australia). The sensor will need to be recalibrated if an alternate mounting position is 
required. Do not mount the sensor with the opening facing up, as CO

2

 gas can accumulate in 

the sensor and cause false readings. 

Figure 2: Sensor Mounting orientations 

Содержание GDA 4350

Страница 1: ...GDA 4350 Carbon Dioxide Sensor Operating Manual Manual Revision 1 1 Hardware Version 11 12 Software Version 2 1 3 Copyright Gas Detection Australia Pty Ltd 2018...

Страница 2: ...or will depend on a number of factors such as the environment in which it is used operating temperature humidity atmospheric pressure and environmental pollutants In all cases we recommend sensors are...

Страница 3: ...of the information contained herein The information in this document has been carefully checked and is believed to be entirely reliable with all of the necessary information included GDA reserves the...

Страница 4: ...Table of Contents 1 Overview 5 1 1 Introduction 5 1 2 Specifications 6 2 Sensor Placement 7 3 Wiring Instructions 8 4 Operation 9 5 Output Configuration 10 6 Calibration 11 6 1 Fresh air Zero point C...

Страница 5: ...n safe area applications It uses the latest laser semiconductor technology for detection of carbon dioxide The sensor and electronics are one homogenous unit and must never be separated It has an anal...

Страница 6: ...Standard 0 20mA 0 10V or 0 5V User Specified Power Consumption 150mA peak 24VDC Connection 4 pin plug connector Wiring 3 core wire with overall screen with current carrying capability to suit cable l...

Страница 7: ...it The further from the potential leeks the more the gas will be diluted Take into account drafts and air movements when mounting the sensor Fit using the four fixing holes in the corners of the box W...

Страница 8: ...rying capability to suit cable length of cable run Screen must be connected to the Earth connection on the connector P1 The enclosure is platted with a layer of conductive chrome which is connected to...

Страница 9: ...of the set output Ensure that this does not affect external equipment LED LED STATE FUNTION ON Power is present OFF Power is not present GREEN ON BLUE FLASHING YELLOW ON The sensor is in its warm up p...

Страница 10: ...d input impedance at 24V Be cautious when handling the GDA 4350 as there are delicate components that can easily be damaged by static discharge Always observe anti static precautions To change the out...

Страница 11: ...n fresh air The sensor must be in the fresh air conditions for a minimum of five minutes or until the output has reached a stable point To perform a manual fresh air zero span point calibration 1 Remo...

Страница 12: ...d Manual Calibration Mode Add a jumper to pins 1 and 3 of P3 1 3 Use supplied jumper on pins 18 and 17 of P3 for Manual Calibration Mode return to this location only Figure 5 Manual Calibration Mode j...

Страница 13: ...chemical formula 2 Part Number Product part number of detector sensor head controller 3 Serial Number Serial number of detector sensor head controller 4 Range Range of sensor and units ppm vol LEL 5 D...

Страница 14: ...Page 14 of 16 M GDA 4350 V12 Rev 1 1 Notes...

Страница 15: ...Page 15 of 16 M GDA 4350 V12 Rev 1 1 Notes...

Страница 16: ...ents Date 1 Initial revision of the Manual HW V11 12 27 Apr 2018 1 1 Manual CAL table 4 updated 1 May 2018 Table 5 Revision History This product and operating manual are subject to change without prio...

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