Fixed Methane (CH4) Gas Detector, 0 to 100% LEL

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$2,093.23

Buy fixed methane gas detector online at good price. Measuring range 0-100% LEL, resolution 1% LEL, optional output signal 4-20mA and RS485, high accuracy 3% F.S. CH4 gas detector 24-hour works to detect and monitor methane concentration, sound and light alarm, real-time display, remote control is available.

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

SKU: GD300-CH4

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Low price methane gas detector for sale. Measurement range 0-100% LEL, supports remote control with output signal 4-20mA and RS485. The CH₄ gas detector has fixed design, which is used in methane concentration detecting and monitoring, sound and light alarm, real-time display, small size, lightweight, convenient mounting.

Features

Methane gas detector adopts high precision sensor for accurate gas leak detection.
Methane gas detector is equipped with 3-wire system 4-20mA analog output, relay output, RS485 output (optional).
The CH₄ 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 methane gas detector has self-calibration function, and three standard keys will be used to realize on-site maintenance.
The CH₄ gas detector can output one or two on-off signals, can drive ventilator, solenoid valve or other external devices.

Specification

Model	GD300-CH4
Detection Principle	Electrochemistry
Gas	Methane (CH₄)
Range	0-50%VOL, 0-100%VOL, 0-100% LEL
Resolution	0.01%VOL (0-50%VOL), 0.1%VOL (0-100%VOL), 1% LEL (0-100% LEL)
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 Methane (CH₄) Gas Detector Dimension (Unit: mm)

Fixed gas detector with alarm dimension

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

Gas Type	Measure Range	Resolution
Ammonia (NH3)	0-50/100/200/500/1000ppm	0.01ppm/0.1ppm/1ppm
Benzene (C6H6)	0-1/10/50/100/200/1000/2000/5000/10000ppm	0.001ppm/0.01ppm/0.1ppm/1ppm
Carbon Dioxide (CO2)	0-1000/2000/5000/9999ppm, 0-1/5/100%VOL	0.1ppm/1ppm/0.001%VOL
Carbon Monoxide (CO)	0-10/20/50/100/500/1000/2000ppm	0.01ppm/0.1ppm/1ppm
Chlorine (Cl2)	0-10/20/50/100ppm	0.01ppm/0.1ppm
Chlorine Dioxide (ClO2)	0-1/5/10/20/50/100ppm	0.001ppm/0.01ppm/0.1ppm
Ethylene (C2H4)	0-50/100/500/1000/2000ppm	0.01ppm/0.1ppm/1ppm
Formaldehyde (CH2O)	0-10/20/50/100ppm	0.01ppm/0.1ppm/1ppm
Hydrocarbons (HC)	0-100%LEL	1%LEL
Hydrogen (H2)	0-1000/2000/5000/9999ppm, 0-1/4%VOL	1ppm/0.001%VOL
Hydrogen Chloride (HCL)	0-10/20/50/100/200ppm	0.01ppm/0.1ppm
Hydrogen Cyanide (HCN)	0-10/20/50/100ppm	0.01ppm/0.1ppm
Hydrogen Sulfide (H2S)	0-20/50/100/200ppm	0.01ppm/0.1ppm
Methane (CH4)	0-50/100%VOL, 0-100%LEL	0.01/0.1%VOL/1%LEL
Nitric Oxide (NO)	0-20/50/100/250/500/1000ppm	0.01ppm/0.1ppm/1ppm
Nitrogen (N2)	0-100%VOL	0.01%VOL
Nitrogen Dioxide (NO2)	0-20/50/100/500/1000ppm	0.01ppm/0.1ppm/1ppm
Nitrogen Oxides (NOX)	0-1/5/10/20/50/100/250/500/1000ppm	0.001ppm/0.01ppm/0.1ppm/1ppm
Oxygen (O2)	0-25/30%VOL	0.01%VOL
Ozone (O3)	0-1/5/10/20/50/100ppm	0.001ppm/0.01ppm/0.1ppm
Phosphine (PH3)	0-10/20/50/100/500/1000/2000/3000ppm	0.01ppm/0.1ppm/1ppm
Sulfur Dioxide (SO2)	0-20/50/100/500/1000ppm	0.01ppm/0.1ppm/1ppm
Volatile Organic Compounds (VOC)	0-1/5/10/20/50/100/200/500/1000/2000/5000/10000ppm	0.001ppm/0.01ppm/0.1ppm/1ppm
Combustible Gas (EX)	0-100%LEL	1%LEL

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: How to improve the service life of methane gas detector?

The methane gas detector should be calibrated and tested regularly.
When replacing the probe of CH₄ gas detector, in addition to a certain sensor activation time, the instrument must be recalibrated. In addition, before using the methane gas detector, use the standard gas for response detection to ensure protection of the instrument.
Pay attention to the interference between other sensors and the methane gas detector.
Although a composite gas detector can detect multiple gases at the same time, the fixed gas detector is not suitable for any combination of toxic and harmful gases. Generally speaking, each gas detector corresponds to a specific detection gas, but any gas detector cannot be absolutely effective.
Pay attention to the life of methane gas detector.
CH₄ gas detector has a certain service life. Generally, in portable gas detectors, LEL sensors have a longer life span and can generally be used for about three years. The life of the photoionization detector is four years or longer. The lifetime of electrochemical specific gas detectors is relatively short, generally one to two years. The life span of the oxygen sensor is short, about a year or so.

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

Gas Detector 3-Wire System

In the realm of gas detection systems, the 3-wire configuration offers a robust wiring solution, especially for applications requiring analog output. This video will show you the 3-wire gas detector wiring.

Gas Detector 4-Wire System

The wiring of the 4-wire gas detector supports the RS485 interface Modbus RTU communication mode. This video will show you the 4-wire gas detector wiring.

Using Cloud Data and 4G for Fixed Gas Detectors

This video will show you about the applications of cloud data and 4G transmission for fixed gas detectors.

Monitoring Combustible Gas in Pipelines

This video will show you how to monitoring combustible gas in pipelines.

Existing reviews of Fixed Methane (CH4) Gas Detector, 0 to 100% LEL

Looking for CH4 detector

We are interested in the stand-alone version with the ability to interrogate, ideally a digital signal. We are looking for the ability to measure very low methane concentrations in air. Something in the range of 0-25% would be a good start.

From: Amelia | Date: 08/01/2024

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

ATO Responded

If you need "real time measurement software", we recommend the new version of the portable gas detector GD3000-CH4.
It has three measuring ranges: 0-10000ppm, 20-100%LEL, 5-100%VOL---the lowest can be measured is 1ppm. This version comes with Bluetooth wireless or LORA wireless.

Landfill dectection

I'm planning to detect landfill methane emission. I'll install instrument outside and dectect continously. Also I want to save data (connect PC)

Is this product suitable for my plan? If there any other suitable product, please tell me

Thank you

From: Kye | Date: 28/11/2023

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

ATO Responded

Our fixed methane (CH4) gas detector is not supported to be directly exposed outdoors, because the protection level is not enough and the rain will damage the equipment. Of course, you can make a rain shield by yourself (without affecting the air circulation, as well as the rain can not erode the product).

Gas detector order

We are looking for a way to sniff out N2 leaks on a transformer by moving the detector along welds, the N2 system regulator and plumbing is this a good tool for that application?

From: Hcobb | Date: 12/09/2021

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

ATO Responded

Yes, if the N2 system regulator is in a normal air environment, which means that the welds point of pipeline is in the normal air but no other mixed gas, then the unit N2 portable detector 0-100%VOL can work for that, with no problem at all.
SKU: ATO-GAS-N2
See specs, price, and you can order by credit card on: https://www.ato.com/portable-n2-gas-detector
Free shipping.

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