Description

Gastec GOM-3A Multi Gas Detector

Gastec GOM-3A Multi Gas Detector for Oxygen, Flammable Gas One unit performs two roles, realizing highly efficient and safe control at the same time. Can simultaneously measure oxygen and a flammable gas.

GASTEC Detector indicate concentrations directly by way of a calibrated scale printed on the tubes. At GASTEC, we endeavour to achieve highest quality detector tubes for analysing airborne gases/vapours, as well as pollutants in soil and water through our advanced state-of-the-art research and development. Through our efforts we have acquired a solid reputation among our customers in virtually all sectors of industry, commerce and society. Tubes are now available for more than 500 different applications.

Function

Dual-Gas Atmospheric Monitoring: Continuously tracks oxygen concentration ( $\%\text{ }\text{O}_2$ ) and flammable gas levels (LEL) on a split display for hazard evaluation.
Dual-Sensor Detection Assembly: Combines a self-powered galvanic cell ( $\text{O}_2$ ) and a pellistor catalytic combustion sensor ( $\text{LEL}$ ) to detect hypoxic or explosive conditions in real time.
Pre-Entry & Diffusion Screening: Functions as a wearable personal diffusion monitor or connects to a motorized pump and sampling hose for remote testing before entering confined spaces.

Specifications

Parameter	Specification
Manufacturer	Gastec Corporation
Model Designation	GOM-3A
Target Gases	Oxygen ( $text{O}_2$ ) and Combustible Gases (e.g., Methane, Propane, Isobutane)
Detection Principles	Galvanic Cell ( $text{O}_2$ ) / Catalytic Combustion ( $text{LEL}$ )
Measuring Ranges	$text{O}_2$ : $0.0%text{ to }25.0%text{ }text{O}_2$ volume Combustible Gas: $0text{ to }100%text{ LEL}$
Alarm Settings	$text{O}_2$ Low: $le 19.5%$ / High: $ge 23.5%$ Combustible Gas: $10%text{ LEL}$
Response Time ( $T_{90}$ )	$text{O}_2 < 20text{ seconds}$ / $text{LEL} < 30text{ seconds}$
Power Supply	AA or AAA Alkaline Batteries (approx. 8–20 continuous operating hours depending on catalytic sensor load)
Operating Conditions	-10°C to +40°C (14°F to 104°F); 10–90% RH non-condensing

Features

Dual-Gas Simultaneous Monitoring: Tracks volume concentration of oxygen ( $%text{ }text{O}_2$ ) alongside flammable gas levels ( $%text{ LEL}$ ) on a split-screen display.
Galvanic Cell & Catalytic Combustion Sensors: Utilizes a self-powered galvanic electrochemical cell for oxygen sensing and a pellistor catalytic combustion sensor for combustible gas detection.
Diffusion or Pumped Sampling: Works as a personal diffusion monitor or pairs with an external motorized sampling pump and extension hose for pre-entry testing of deep vaults and tanks.

Applications

Confined Space Pre-Entry Testing: Checking utility manholes, storage tanks, and sewer vaults for oxygen deficiency and explosive vapor accumulation.
Hot Work Permit Safety Screening: Screening surrounding atmospheres for flammable gas leaks prior to welding, cutting, or spark-producing operations.
Industrial Plant Safety Audits: General environmental monitoring around gas pipelines, boiler rooms, and solvent handling facilities.

Gastec GOM-3A Multi Gas Detector

Function

Dual-Gas Atmospheric Monitoring: Continuously tracks oxygen concentration ( $\%\text{ }\text{O}_2$ ) and flammable gas levels (LEL) on a split display for hazard evaluation.

Dual-Sensor Detection Assembly: Combines a self-powered galvanic cell ( $\text{O}_2$ ) and a pellistor catalytic combustion sensor ( $\text{LEL}$ ) to detect hypoxic or explosive conditions in real time.

Pre-Entry & Diffusion Screening: Functions as a wearable personal diffusion monitor or connects to a motorized pump and sampling hose for remote testing before entering confined spaces.

Specifications

Parameter

Specification

Manufacturer

Gastec Corporation

Model Designation

GOM-3A

Target Gases

Oxygen (

text{O}_2

) and Combustible Gases (e.g., Methane, Propane, Isobutane)

Detection Principles

Galvanic Cell (

text{O}_2

) / Catalytic Combustion (

text{LEL}

)

Measuring Ranges

$text{O}_2$ : $0.0%text{ to }25.0%text{ }text{O}_2$ volume

Combustible Gas: $0text{ to }100%text{ LEL}$

Alarm Settings

$text{O}_2$ Low: $le 19.5%$ / High: $ge 23.5%$

Combustible Gas: $10%text{ LEL}$

Response Time ( $T_{90}$ )

text{O}_2 < 20text{ seconds}

text{LEL} < 30text{ seconds}

Power Supply

AA or AAA Alkaline Batteries (approx. 8–20 continuous operating hours depending on catalytic sensor load)

Operating Conditions

-10°C to +40°C (14°F to 104°F); 10–90% RH non-condensing

Features

Dual-Gas Simultaneous Monitoring: Tracks volume concentration of oxygen ( $%text{ }text{O}_2$ ) alongside flammable gas levels ( $%text{ LEL}$ ) on a split-screen display.

Galvanic Cell & Catalytic Combustion Sensors: Utilizes a self-powered galvanic electrochemical cell for oxygen sensing and a pellistor catalytic combustion sensor for combustible gas detection.

Diffusion or Pumped Sampling: Works as a personal diffusion monitor or pairs with an external motorized sampling pump and extension hose for pre-entry testing of deep vaults and tanks.

Applications

Confined Space Pre-Entry Testing: Checking utility manholes, storage tanks, and sewer vaults for oxygen deficiency and explosive vapor accumulation.

Hot Work Permit Safety Screening: Screening surrounding atmospheres for flammable gas leaks prior to welding, cutting, or spark-producing operations.

Industrial Plant Safety Audits: General environmental monitoring around gas pipelines, boiler rooms, and solvent handling facilities.

Best Gastec GOM-3A Multi Gas Detector

Product Note:

Description

Gastec GOM-3A Multi Gas Detector

Function

Specifications

Features

Applications

Related Products

Best Gastec GOM-3A Multi Gas Detector

Product Note:

Description

Gastec GOM-3A Multi Gas Detector

Function

Specifications

Features

Applications

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