RKI Instruments CH4 100% vol 58L Steel Cylinder 81-0016RK-05
Description
The RKI Calibration CH4 Gas (81-0016RK-05) is 100% pure methane (CH4) in a durable 58-liter steel cylinder, engineered for LEL sensor calibration and testing applications that require a pure methane reference — rather than a multi-gas blend. This cylinder is used when a sensor must be zeroed or spanned to methane specifically, independent of other gas components.
Applications include LEL sensor factory calibration, single-gas calibrator verification, and research or instrument testing applications requiring a traceable pure methane supply.
Note: This item ships via UPS Ground due to HazMat restrictions and is not available for expedited shipping. Calibration gas is not returnable. Please check your selection carefully before ordering.
Part Number:
81-0016RK-05
PK Safety services RKI Instruments gas monitors in-house with factory-trained technicians — calibration, sensor replacement, bump testing, and full repair. Call 800.829.9580 to speak with a technician.
Related Searches
Calibration Gas, Gas Detection
Frequently Asked Questions
Why would I use pure methane (100% CH4) instead of a multi-gas blend for calibration?
Pure methane is used when only the LEL sensor needs to be calibrated or tested — for example, when verifying a single LEL transmitter in a fixed gas system, or when a four-gas calibration blend is not needed because the other sensors (O2, H2S, CO) were calibrated separately. For most field instrument calibration, a four-gas blend like the 81-0154RK-04 is more efficient. Call 800.829.9580 to confirm the correct calibration gas for a specific application.
What RKI monitors can be calibrated with this cylinder?
Any RKI monitor or fixed sensor transmitter that uses methane as the LEL reference gas can be calibrated using pure CH4. This includes single LEL monitors and fixed LEL sensor transmitters. Multi-gas monitors typically require all target gas concentrations present simultaneously — if multi-gas calibration is needed, use a four-gas blend instead of pure methane.
What LEL concentration does 100% CH4 represent for calibration?
100% methane (CH4) by volume corresponds to a concentration well above the LEL (Lower Explosive Limit), which for methane is 5% by volume in air — or 50,000 ppm. This cylinder delivers gas for test and calibration purposes, not for direct field alarm threshold verification. Span calibration for LEL sensors is typically done using a 50% LEL (2.5% CH4 by volume) or similar reference — a pure CH4 cylinder requires a dilution regulator or controlled flow setup. Confirm the calibration procedure in the monitor or sensor transmitter's operator manual.
Does this cylinder require any special regulator?
Yes. Because this is 100% methane (above LEL), appropriate pressure regulation is required. Use only a regulator rated for methane service. For calibration applications requiring a specific flow rate and concentration, a dilution fixture may also be needed. Call 800.829.9580 for guidance on the correct regulator and setup for a specific calibration application.
Why is this calibration gas non-returnable?
Calibration gas is a hazardous material. Once shipped, cylinders cannot be restocked or re-inspected for concentration integrity. Confirm the application and cylinder size before ordering. Call 800.829.9580 for pre-purchase verification at no charge.
Can PK Safety assist with LEL sensor calibration or replacement?
Yes. PK Safety services RKI Instruments monitors and fixed sensor transmitters in-house with factory-trained technicians, including LEL sensor replacement, calibration verification, and full functional testing. Call 800.829.9580 to arrange service or discuss calibration support for a specific system.
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Description
The RKI Calibration CH4 Gas (81-0016RK-05) is 100% pure methane (CH4) in a durable 58-liter steel cylinder, engineered for LEL sensor calibration and testing applications that require a pure methane reference — rather than a multi-gas blend. This cylinder is used when a sensor must be zeroed or spanned to methane specifically, independent of other gas components.
Applications include LEL sensor factory calibration, single-gas calibrator verification, and research or instrument testing applications requiring a traceable pure methane supply.
Note: This item ships via UPS Ground due to HazMat restrictions and is not available for expedited shipping. Calibration gas is not returnable. Please check your selection carefully before ordering.
Part Number:
81-0016RK-05
PK Safety services RKI Instruments gas monitors in-house with factory-trained technicians — calibration, sensor replacement, bump testing, and full repair. Call 800.829.9580 to speak with a technician.
Related Searches
Calibration Gas, Gas Detection
Frequently Asked Questions
Why would I use pure methane (100% CH4) instead of a multi-gas blend for calibration?
Pure methane is used when only the LEL sensor needs to be calibrated or tested — for example, when verifying a single LEL transmitter in a fixed gas system, or when a four-gas calibration blend is not needed because the other sensors (O2, H2S, CO) were calibrated separately. For most field instrument calibration, a four-gas blend like the 81-0154RK-04 is more efficient. Call 800.829.9580 to confirm the correct calibration gas for a specific application.
What RKI monitors can be calibrated with this cylinder?
Any RKI monitor or fixed sensor transmitter that uses methane as the LEL reference gas can be calibrated using pure CH4. This includes single LEL monitors and fixed LEL sensor transmitters. Multi-gas monitors typically require all target gas concentrations present simultaneously — if multi-gas calibration is needed, use a four-gas blend instead of pure methane.
What LEL concentration does 100% CH4 represent for calibration?
100% methane (CH4) by volume corresponds to a concentration well above the LEL (Lower Explosive Limit), which for methane is 5% by volume in air — or 50,000 ppm. This cylinder delivers gas for test and calibration purposes, not for direct field alarm threshold verification. Span calibration for LEL sensors is typically done using a 50% LEL (2.5% CH4 by volume) or similar reference — a pure CH4 cylinder requires a dilution regulator or controlled flow setup. Confirm the calibration procedure in the monitor or sensor transmitter's operator manual.
Does this cylinder require any special regulator?
Yes. Because this is 100% methane (above LEL), appropriate pressure regulation is required. Use only a regulator rated for methane service. For calibration applications requiring a specific flow rate and concentration, a dilution fixture may also be needed. Call 800.829.9580 for guidance on the correct regulator and setup for a specific calibration application.
Why is this calibration gas non-returnable?
Calibration gas is a hazardous material. Once shipped, cylinders cannot be restocked or re-inspected for concentration integrity. Confirm the application and cylinder size before ordering. Call 800.829.9580 for pre-purchase verification at no charge.
Can PK Safety assist with LEL sensor calibration or replacement?
Yes. PK Safety services RKI Instruments monitors and fixed sensor transmitters in-house with factory-trained technicians, including LEL sensor replacement, calibration verification, and full functional testing. Call 800.829.9580 to arrange service or discuss calibration support for a specific system.
The RKI Calibration CH4 Gas (81-0016RK-05) is 100% pure methane (CH4) in a durable 58-liter steel cylinder, engineered for LEL sensor calibration and testing applications that require a pure methane reference — rather than a multi-gas blend. This cylinder is used when a sensor must be zeroed or spanned to methane specifically, independent of other gas components.
Applications include LEL sensor factory calibration, single-gas calibrator verification, and research or instrument testing applications requiring a traceable pure methane supply.
Note: This item ships via UPS Ground due to HazMat restrictions and is not available for expedited shipping. Calibration gas is not returnable. Please check your selection carefully before ordering.
Part Number:
81-0016RK-05
PK Safety services RKI Instruments gas monitors in-house with factory-trained technicians — calibration, sensor replacement, bump testing, and full repair. Call 800.829.9580 to speak with a technician.
Related Searches
Calibration Gas, Gas Detection
Frequently Asked Questions
Why would I use pure methane (100% CH4) instead of a multi-gas blend for calibration?
Pure methane is used when only the LEL sensor needs to be calibrated or tested — for example, when verifying a single LEL transmitter in a fixed gas system, or when a four-gas calibration blend is not needed because the other sensors (O2, H2S, CO) were calibrated separately. For most field instrument calibration, a four-gas blend like the 81-0154RK-04 is more efficient. Call 800.829.9580 to confirm the correct calibration gas for a specific application.
What RKI monitors can be calibrated with this cylinder?
Any RKI monitor or fixed sensor transmitter that uses methane as the LEL reference gas can be calibrated using pure CH4. This includes single LEL monitors and fixed LEL sensor transmitters. Multi-gas monitors typically require all target gas concentrations present simultaneously — if multi-gas calibration is needed, use a four-gas blend instead of pure methane.
What LEL concentration does 100% CH4 represent for calibration?
100% methane (CH4) by volume corresponds to a concentration well above the LEL (Lower Explosive Limit), which for methane is 5% by volume in air — or 50,000 ppm. This cylinder delivers gas for test and calibration purposes, not for direct field alarm threshold verification. Span calibration for LEL sensors is typically done using a 50% LEL (2.5% CH4 by volume) or similar reference — a pure CH4 cylinder requires a dilution regulator or controlled flow setup. Confirm the calibration procedure in the monitor or sensor transmitter's operator manual.
Does this cylinder require any special regulator?
Yes. Because this is 100% methane (above LEL), appropriate pressure regulation is required. Use only a regulator rated for methane service. For calibration applications requiring a specific flow rate and concentration, a dilution fixture may also be needed. Call 800.829.9580 for guidance on the correct regulator and setup for a specific calibration application.
Why is this calibration gas non-returnable?
Calibration gas is a hazardous material. Once shipped, cylinders cannot be restocked or re-inspected for concentration integrity. Confirm the application and cylinder size before ordering. Call 800.829.9580 for pre-purchase verification at no charge.
Can PK Safety assist with LEL sensor calibration or replacement?
Yes. PK Safety services RKI Instruments monitors and fixed sensor transmitters in-house with factory-trained technicians, including LEL sensor replacement, calibration verification, and full functional testing. Call 800.829.9580 to arrange service or discuss calibration support for a specific system.
Specifications
Specifications
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