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Fixed Oxygen (O2) Gas Detector, 0 to 25% / 30% Vol

5 out of 5 based on 3 reviews | Write a review

$434.77

Fixed gas detector for detecting oxygen concentration. Measuring range 0~25% or 0~30% for selection, output signal 4-20mA and RS485, high accuracy 3% F.S. O2 gas detector has sound and light alarm, real-time display, remote control, small size, lightweight, low price.

Measuring Range *
Signal Output *
Relay Output *
Power Adapter *
Calibration Kit *

SKU: GD300-O2

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Delivery date: 6-12 days

Overview
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Fixed oxygen gas detector for sale. Optional measuring range 0~25% or 0~30%, output signal 4-20mA & RS485. The O₂ gas detector can 24 hours online for oxygen concentration detecting, supports remote control, sound and light alarm, affordable price, reliable manufacturer.

Features

Oxygen gas detector adopts high precision sensor for accurate gas leak detection.
Oxygen gas detector is equipped with 3-wire system 4-20mA analog output, relay output, RS485 output (optional).
The O₂ gas detector is compatible with various controlled alarms, PLC, DCS and other control system, and can be remote monitored.
Explosion-proof design, fast, relaible and stable.
Infrared ray controller can remote control the alarm point settings, zero calibration, and address modification.
Two-stage alarm with sound and light, and the alarm point is settable.
The oxygen gas detector has self-calibration function, and three standard keys will be used to realize on-site maintenance.
The O₂ gas detector can output one or two on-off signals, can drive ventilator, solenoid valve or other external devices.

Specification

Model	GD300-O2
Detection Principle	Electrochemistry
Gas	Oxygen (O₂)
Range (Optional)	0~30% Vol, 0~25% Vol
Resolution	0.01%Vol
Accuracy	≤±3% F.S.
Responce Time	≤10s
Repeatability	≤±1%
Recovery Time	≤10s
Linearity Error	≤±1%
Zero Shift	≤±1% (F.S./year)
Signal Output (Optional) ^Note	4-20mA and RS485 Relay output: one group of relay output (1NO+1NC, 24V 100mA) for one alarm (default), or two groups of relay output (2NO+2NC, 24V 100mA) for high/low alarm (optional).
Alarms	Sound, light
Display	High light nixie tube display
Installation	Wall-mounted, piping type, flow-type (according to the detected environment)
Connection	G1/2 is the inlet and outlet for power and signal lines Pipe-mounted type: The installation thread size of the instrument is M45*P2.0
Operating Time	24h
Explosion-proof Grade	Ex d llC T6
Protection Grade	IP65
Certification	CE, ATEX
Working Voltage	12~36V DC
Case Material	Die-casting aluminum housing
Operating Temperature	-20℃~50℃
Operating Humidity	0~95%RH (non-condensing)
Dimension	20617990mm
Weight	≤1.6kg
Accessories	Power adapter: Input 100-240VAC 50/60Hz, Output 24VDC 2A (Optional USA plug & Europe plug)

Note: To measure confined spaces such as pipelines, please contact us and inform the detailed conditions of use.

Fixed Oxygen (O₂) Gas Detector Dimension (Unit: mm)

Fixed gas detector with alarm dimension

***Other Common Gases and Ranges Available for Fixed Gas Detectors

Gas	Range (Default)	Range (Optional)	Resolution
Combustible Gas (EX)	0-100% LEL	0-100% LEL	1%LEL
Ammonia (NH3)	0-100 ppm	0-50/100/200/500/1000 ppm	0.01ppm/0.1ppm/1ppm
Carbon Monoxide (CO)	0-1000 ppm	0-100/500/1000/2000 ppm	0.01ppm/0.1ppm/1ppm
Hydrogen Sulfide (H2S)	0-100 ppm	0-50/100/500/1000 ppm	0.01ppm/0.1ppm/1ppm
Methane (CH4)	0-100% LEL	0-100% LEL	1%LEL
Chlorine (Cl2)	0-10 ppm	0-10/20/50/100 ppm	0.01ppm/0.1ppm
Ethylene (C2H4)	0-50 ppm	0-100/500/1000/2000 ppm	0.01ppm/0.1ppm/1ppm
Hydrogen Chloride (HCL)	0-20 ppm	0-10/20/50/100 ppm	0.01ppm
Hydrogen (H2)	0-1000 ppm	0-1000/2000/5000/10000 ppm	0.1ppm/1ppm
Nitric Oxide (NO)	0-100 ppm	0-100/250/500/1000 ppm	0.01ppm/0.1ppm/1ppm
Nitrogen Dioxide (NO2)	0-20 ppm	0-20/50/100 ppm	0.01ppm/0.1ppm/1ppm
Formaldehyde (CH2O)	0-10 ppm	0-10/20/50/100 ppm	0.01ppm/0.1ppm/1ppm
Ozone (O3)	0-10 ppm	0-1/5/10/20/50/100 ppm	0.001ppm/0.01ppm/0.1ppm
Carbon Dioxide (CO2)	0-2000 ppm	0-1000/2000/5000/10000/50000 ppm	0.1ppm/1ppm
Sulfur Dioxide (SO2)	0-20 ppm	0-10/20/100 ppm	0.01ppm/0.1ppm
Hydrogen Cyanide (HCN)	0-10 ppm	0-10/20/50/100 ppm	0.01ppm/0.1ppm
Phosphine (PH3)	0-10 ppm	0-10/20/50/100/200/500/1000 ppm	0.01ppm/0.1ppm/1ppm
Nitrogen (N2)	0-100% Vol	0-100% Vol	0.01%Vol
Volatile Organic Compounds (VOC)	0-10 ppm	0-1/5/10/20/50/100/200/500/1000/2000/5000 ppm	0.001ppm/0.01ppm/0.1ppm/1ppm
Benzene (C6H6)	0-100 ppm	0-1/5/10/20/50/100/200/500/1000/2000/5000 ppm	0.001ppm/0.01ppm/0.1ppm/1ppm
Chlorine Dioxide (ClO2)	0-10 ppm	0-10/20/50/100 ppm	0.01ppm/0.1ppm

Note: Some common gases and the measuring ranges are listed in the above table. For more information, please feel free to contact us.

Details

Tips: Why you need an oxygen gas detector?

Oxygen detection is very important for entering confined spaces and entering certain open spaces below the ground. Other gases with higher density than air (such as gasoline, hydrogen sulfide, etc.) will accumulate in the downward direction, thereby displacing O₂ in the space. There are two concentration points to consider in the detection of oxygen concentration: one is that too low O₂ concentration will cause suffocation, and the other is that excessive oxygen exceeding the constant may cause unimaginable acceleration and enhancement of combustion or other chemical reactions. The concentration of oxygen in normal air is about 20.9%, and the balance (over 78%) is mainly nitrogen, and the rest includes a small amount of water vapor, carbon monoxide and other gases.

Most confined space standards and law enforcement agencies, such as OSHA, use the volumetric concentration of O₂ to determine whether it is insufficient, and the usual lower limit is 19.5%. This is also the lowest alarm point set by most manufacturers on the oxygen gas detector. Some law enforcement agencies also use partial pressure of gas instead of concentration to indicate insufficient oxygen. In this case, if the O₂ partial pressure is lower than 16.3 kPa or 122 mHg, it is deemed insufficient (16 kPa oxygen partial pressure is approximately equivalent to 16.3% oxygen concentration at sea level). The reason for using partial pressure is that the human body relies more on oxygen partial pressure rather than concentration for breathing.

Gas Detector Catalogue

ATO Gas Detector Catalog.pdf

Fixed Gas Detector User Manual

GD300 Series Fixed Gas Detector User Manual.pdf

Protocol of RS485 for Fixed Gas Detector.pdf

Calibration Procedures of Fixed Type Gas Detector.pdf

Basic Settings of Portable Gas Detector

This video will show you the basic settings of ATO portable gas detectors including high/low alarm setting, language setting and time setting.

Calibration of Portable Gas Detector

This video will show how to calibrate the ATO portable gas detectors.

Calibration of Fixed Type Gas Detector

This video will show the calibration procedures of the ATO fixed type gas detectors.

Existing reviews of Fixed Oxygen (O2) Gas Detector, 0 to 25% / 30% Vol

Good performance

I recently acquired the Fixed Oxygen (O2) Gas Detector for our industrial facility, and I couldn't be more pleased with its performance. Its precision in monitoring oxygen levels within a broad measurement range, coupled with straightforward installation, has streamlined our safety protocols.

From: Zephyr | Date: 16/10/2023

Was this review helpful? Yes No (0/0)

I have a question about your gas detector

I am Watanabe from Japan and I'm a postgraduate student. I'm writing to you for the first time.
I'm contacting you to enquire about <Gas-H2>.
I'm interested in your product and I want to use it to measure H2 in the air. So I have questions about your product.
Is this machine high precision? It's said that there is about 0.5‰H2 in the air, so I wonder whether this machine can measure by after the decimal point.

From: Wong | Date: 28/09/2021

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ATO Responded

Yes, our gas detector can measure H2 in the air, and you can choose the measurement range 0-10 ppm (accuracy 0.001 ppm), or 0-500 ppm (accuracy 0.1 ppm).

Can you help me find a suitable instrument for measuring formaldehyde gas?

I want 7 of these units to be able to monitor from 0 to 100ppm of formaldehyde. We will use these inside a hatcher to monitor the levels as the chickens hatch out. I need to monitor for 3 days and I need the data to be able to be graphed out. Can you help me? Do you have a picture of the graph or does it just get exported to excel and then I have to do it myself?

From: Bpayne | Date: 13/09/2021

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ATO Responded

1. The most common working time of our Portable Formaldehyde (CH2O) Gas Detector is 24 hours (after full charge). Therefore, if you want to exceed 72 hours working hours, then we recommend using fixed (CH2O) gas detectors, it can run continuously for a long time.
2. Whether you will use our portable or fixed gas detector, you can only export the measurement data to the excel file without providing the historical graph.

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