Description
The RKI Instruments NC-6264A is a replacement catalytic combustible-gas (methane, LEL) sensor. RKI also lists it for the 03 Series. It also fits the GX-2009, GX-2012, GX-6000 and Gas Tracer, all of which RKI has discontinued; RKI still lists the part for them. On the GX-6000 the LEL channel reads 0-100% LEL (1% LEL), 0-100% vol (0.5% vol), as RKI states. Part of GX-6000 parts. Ships in 1–2 business days; most orders arrive in 3–7 business days.
RKI Instruments NC-6264A specifications
| Item | RKI Instruments data |
|---|---|
| Part number | NC-6264A |
| Type | Combustible Gas (LEL) Sensor |
| RKI parts-list description | Sensor, Methane (CH4) 0-100% LEL for GX-2009/GX-2012/GX-6000/GP-03/Gas Tracer |
| Gas detected | Combustible gas (LEL) |
| Measuring range on the GX-6000 | 0-100% LEL (1% LEL), 0-100% vol (0.5% vol) |
| RKI preset alarms on the GX-6000 | A1 10% LEL, A2 50% LEL (0-100% LEL and 0-100% vol methane) |
| Fits | GX-2009, GX-2012, GX-6000, 03 Series, Gas Tracer |
Source: RKI Instruments GX-6000 product page https://www.rkiinstruments.com/product/gx-6000-gas-detector/, fetched Nov 8 2026; RKI Instruments 03 Series product page https://www.rkiinstruments.com/product/03-series-single-gas-detector/, fetched Nov 8 2026; RKI Instruments 2026 parts list (description).
Instruments the NC-6264A fits
| Instrument | What RKI states | On our site | Price |
|---|---|---|---|
| GX-2009 | Named in the RKI Instruments 2026 parts list. RKI: "The GX-2009 has been discontinued. Please see GX-3R gas monitor" | Not stocked; RKI has discontinued it | |
| GX-2012 | Named in the RKI Instruments 2026 parts list. RKI: "The GX-2012 has been discontinued. Please see GX-6100 as an alternative" | Not stocked; RKI has discontinued it | |
| GX-6000 | Listed in the GX-6000 parts table on the RKI product page; named in the RKI Instruments 2026 parts list. RKI: "The GX-6000 has been discontinued. Please see GX-6100 as an alternative" | Not stocked; RKI has discontinued it | |
| 03 Series | Listed in the 03 Series parts table on the RKI product page; named in the RKI Instruments 2026 parts list. | Not stocked | |
| Gas Tracer | Named in the RKI Instruments 2026 parts list. RKI: "The Gas Tracer has been discontinued. Please see GX-6100 as an alternative" | Not stocked; RKI has discontinued it |
Source: RKI Instruments GX-6000 product page https://www.rkiinstruments.com/product/gx-6000-gas-detector/, fetched Nov 8 2026; RKI Instruments 03 Series product page https://www.rkiinstruments.com/product/03-series-single-gas-detector/, fetched Nov 8 2026; RKI Instruments 2026 parts list; RKI Instruments GX-2009 product page https://www.rkiinstruments.com/product/gx-2009-gas-detector/, fetched Nov 8 2026 (discontinued statement); RKI Instruments GX-2012 product page https://www.rkiinstruments.com/product/gx-2012-gas-detector/, fetched Nov 8 2026 (discontinued statement); RKI Instruments Gas Tracer product page https://www.rkiinstruments.com/product/gas-tracer-ppm-ch4-detector/, fetched Nov 8 2026 (discontinued statement). A model we stock links to every configuration of it; the price shown is the lowest configuration.
RKI Instruments documents
- RKI Instruments MSHA datasheet (PDF)
- RKI Instruments quick reference card (PDF)
- RKI Instruments GX-2012 datasheet (PDF)
- RKI Instruments quick reference card (PDF)
- RKI Instruments GX-6000 datasheet (PDF)
- RKI Instruments GX-6000 operator's manual (PDF)
Source: RKI Instruments GX-2009 product page https://www.rkiinstruments.com/product/gx-2009-gas-detector/, fetched Nov 8 2026; RKI Instruments GX-2012 product page https://www.rkiinstruments.com/product/gx-2012-gas-detector/, fetched Nov 8 2026; RKI Instruments GX-6000 product page https://www.rkiinstruments.com/product/gx-6000-gas-detector/, fetched Nov 8 2026 (downloads list).
RKI Instruments NC-6264A questions
What is the RKI NC-6264A sensor? A replacement catalytic combustible-gas (methane, LEL) sensor. The specification table above gives the range and RKI's preset alarms on each instrument it fits.
What instruments does the NC-6264A fit? RKI lists it for the 03 Series; it also fits the GX-2009, GX-2012, GX-6000 and Gas Tracer, which RKI has discontinued. The fits table above says which RKI document names each one.
What range does the NC-6264A read? 0-100% LEL (1% LEL), 0-100% vol (0.5% vol) on the GX-6000, as RKI states; RKI's preset alarms on the GX-6000 are A1 10% LEL, A2 50% LEL (0-100% LEL and 0-100% vol methane).
Is the GX-6000 still supported? RKI's page says "The GX-6000 has been discontinued. Please see GX-6100 as an alternative", and the same page still carries the GX-6000 parts table that names this sensor.
Is the GX-2009 still supported? RKI's page says "The GX-2009 has been discontinued. Please see GX-3R gas monitor"; its 2026 parts list still names this part for the GX-2009.
Guides: when to replace sensors · bump test vs calibration · how to read a gas monitor alarm · what LEL is · every RKI replacement sensor by gas · the four sensor types and how to read a 4-gas meter · what 20% LEL means and LEL alarm set points.
Manufacturer item number: NC-6264A.
Replacement combustible gas (methane, 0-100% LEL) catalytic sensor for the RKI GX-2009, GX-2012, GX-6000, GP-03 and Gas Tracer.
