
Honeywell Analytics 129570-L3 Sensor
The Honeywell Analytics 129570-L3 Sensor is a mission-critical combustible gas sensor engineered for high-precision methane detection in hazardous locations. Designed as a direct drop-in replacement for the S301D2COMB-ME, this explosion-proof catalytic bead sensor provides continuous monitoring to mitigate the risk of accumulated combustible gases. Calibrated with a specific GAIN of 1.0-1.3, it ensures linear signal output proportional to methane concentrations, typically ranging from 0 to 100% LEL (Lower Explosive Limit).
This sensor is built to integrate seamlessly with the Honeywell 301EM-20 controller and other compatible gas detection transmitters. Its catalytic bead technology utilizes a heated catalyst to oxidize gas, generating a millivolt signal that industrial controllers interpret for early-stage leak identification. The rugged explosion-proof housing is rated for volatile environments where natural gas boilers, furnaces, and chemical distribution systems require uncompromising safety standards. For technicians managing large-scale HVACR monitoring, the 129570-L3 provides the sensitivity needed to satisfy strict compliance and environmental regulations.
Key Benefits:
- Direct OEM Compatibility: Engineered as the official successor to the S301D2COMB-ME, ensuring zero-adjustment installation in existing Honeywell Analytics systems.
- Methane-Specific Calibration: Factory-set with GAIN 1.0-1.3 to provide the most accurate response curve for methane (CH4) monitoring.
- Explosion-Proof Reliability: Designed to contain internal explosions, preventing the ignition of surrounding flammable atmospheres in industrial processing areas.
- Enhanced Signal Stability: The catalytic bead design offers consistent performance even in applications with varying humidity and temperature fluctuations.
- Seamless Integration: Pairs with Honeywell 301EM series controllers for centralized gas monitoring and automated exhaust fan activation.
Common Questions:
Is the 129570-L3 compatible with other combustible gases?
While this sensor can detect other hydrocarbons, it is specifically calibrated with a GAIN of 1.0-1.3 for methane. For propane, ethanol, or hydrogen, different gain-specific models (e.g., 129426-L3) are required for precise LEL readings.
Can I use this to replace a standard 301D2COMB?
Yes, the 129570-L3 is the current technical designation for the S301D2COMB methane-specific variant. Check your transmitter settings to ensure the gain values align with this 1.0-1.3 specification.
Where should this methane sensor be installed for maximum safety?
Since methane is lighter than air, this combustible gas sensor should be installed near the ceiling (approximately 1 foot down) or directly above the potential leak source, such as a boiler or gas manifold.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $1,006.52
-65%$1,006.52
$352.28Honeywell Analytics 129570-L3 Sensor
The Honeywell Analytics 129570-L3 Sensor is a mission-critical combustible gas sensor engineered for high-precision methane detection in hazardous locations. Designed as a direct drop-in replacement for the S301D2COMB-ME, this explosion-proof catalytic bead sensor provides continuous monitoring to mitigate the risk of accumulated combustible gases. Calibrated with a specific GAIN of 1.0-1.3, it ensures linear signal output proportional to methane concentrations, typically ranging from 0 to 100% LEL (Lower Explosive Limit).
This sensor is built to integrate seamlessly with the Honeywell 301EM-20 controller and other compatible gas detection transmitters. Its catalytic bead technology utilizes a heated catalyst to oxidize gas, generating a millivolt signal that industrial controllers interpret for early-stage leak identification. The rugged explosion-proof housing is rated for volatile environments where natural gas boilers, furnaces, and chemical distribution systems require uncompromising safety standards. For technicians managing large-scale HVACR monitoring, the 129570-L3 provides the sensitivity needed to satisfy strict compliance and environmental regulations.
Key Benefits:
- Direct OEM Compatibility: Engineered as the official successor to the S301D2COMB-ME, ensuring zero-adjustment installation in existing Honeywell Analytics systems.
- Methane-Specific Calibration: Factory-set with GAIN 1.0-1.3 to provide the most accurate response curve for methane (CH4) monitoring.
- Explosion-Proof Reliability: Designed to contain internal explosions, preventing the ignition of surrounding flammable atmospheres in industrial processing areas.
- Enhanced Signal Stability: The catalytic bead design offers consistent performance even in applications with varying humidity and temperature fluctuations.
- Seamless Integration: Pairs with Honeywell 301EM series controllers for centralized gas monitoring and automated exhaust fan activation.
Common Questions:
Is the 129570-L3 compatible with other combustible gases?
While this sensor can detect other hydrocarbons, it is specifically calibrated with a GAIN of 1.0-1.3 for methane. For propane, ethanol, or hydrogen, different gain-specific models (e.g., 129426-L3) are required for precise LEL readings.
Can I use this to replace a standard 301D2COMB?
Yes, the 129570-L3 is the current technical designation for the S301D2COMB methane-specific variant. Check your transmitter settings to ensure the gain values align with this 1.0-1.3 specification.
Where should this methane sensor be installed for maximum safety?
Since methane is lighter than air, this combustible gas sensor should be installed near the ceiling (approximately 1 foot down) or directly above the potential leak source, such as a boiler or gas manifold.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Honeywell Analytics 129570-L3 Sensor is a mission-critical combustible gas sensor engineered for high-precision methane detection in hazardous locations. Designed as a direct drop-in replacement for the S301D2COMB-ME, this explosion-proof catalytic bead sensor provides continuous monitoring to mitigate the risk of accumulated combustible gases. Calibrated with a specific GAIN of 1.0-1.3, it ensures linear signal output proportional to methane concentrations, typically ranging from 0 to 100% LEL (Lower Explosive Limit).
This sensor is built to integrate seamlessly with the Honeywell 301EM-20 controller and other compatible gas detection transmitters. Its catalytic bead technology utilizes a heated catalyst to oxidize gas, generating a millivolt signal that industrial controllers interpret for early-stage leak identification. The rugged explosion-proof housing is rated for volatile environments where natural gas boilers, furnaces, and chemical distribution systems require uncompromising safety standards. For technicians managing large-scale HVACR monitoring, the 129570-L3 provides the sensitivity needed to satisfy strict compliance and environmental regulations.
Key Benefits:
- Direct OEM Compatibility: Engineered as the official successor to the S301D2COMB-ME, ensuring zero-adjustment installation in existing Honeywell Analytics systems.
- Methane-Specific Calibration: Factory-set with GAIN 1.0-1.3 to provide the most accurate response curve for methane (CH4) monitoring.
- Explosion-Proof Reliability: Designed to contain internal explosions, preventing the ignition of surrounding flammable atmospheres in industrial processing areas.
- Enhanced Signal Stability: The catalytic bead design offers consistent performance even in applications with varying humidity and temperature fluctuations.
- Seamless Integration: Pairs with Honeywell 301EM series controllers for centralized gas monitoring and automated exhaust fan activation.
Common Questions:
Is the 129570-L3 compatible with other combustible gases?
While this sensor can detect other hydrocarbons, it is specifically calibrated with a GAIN of 1.0-1.3 for methane. For propane, ethanol, or hydrogen, different gain-specific models (e.g., 129426-L3) are required for precise LEL readings.
Can I use this to replace a standard 301D2COMB?
Yes, the 129570-L3 is the current technical designation for the S301D2COMB methane-specific variant. Check your transmitter settings to ensure the gain values align with this 1.0-1.3 specification.
Where should this methane sensor be installed for maximum safety?
Since methane is lighter than air, this combustible gas sensor should be installed near the ceiling (approximately 1 foot down) or directly above the potential leak source, such as a boiler or gas manifold.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












