Certified 1.0% volume methane-in-air calibration gas (approx. 20% LEL) for low-span verification and bump testing of combustible-gas detectors.
The CAC 103DS1VCH4A supplies a methane-in-air mixture at the lower end of the combustible range, giving technicians a dependable low-span point when calibrating flammable-gas detectors. At roughly one-fifth of the lower explosive limit, it is ideal for confirming that a monitor responds early – well before an atmosphere becomes dangerous.
Combustible-gas sensors gradually lose sensitivity as catalytic beads age or optics foul. Calibrating with the 103DS1VCH4A methane test gas restores confidence that the %LEL reading on the display reflects the real hazard rather than a drifting sensor.
Methane in air is the accepted benchmark for LEL calibration, and a stable certified blend removes the guesswork from routine gas-detector servicing and pre-entry checks.
For controlled delivery, use a CAC FF-100 regulator. Talk to Hinco Instruments in Perth for pricing, availability and matching span gases.
| Target Gas | Methane (CH₄) |
|---|---|
| Concentration | 1.0% by volume (≈ 20% LEL) |
| Balance Gas | Synthetic Air |
| Cylinder Type | Disposable, non-refillable aluminium |
| Valve Connection | C10 (5/8"-18 UNF) |
| Shelf Life | 36 months from date of manufacture |
| Certification | Traceable to ISO 17034 / ISO 17025 |
| Physical State | Compressed gas – colourless, odourless |
| UN Number | 1956 (Compressed gas, N.O.S.) |
The CAC 103DS1VCH4A supplies a 1.0% v/v methane-in-air mixture (approximately 20% LEL) for low-span calibration of combustible-gas detectors:
Hinco Instruments is your authorised CAC specialty gas distributor in Perth, WA. Contact us for pricing, availability, cylinder options, and technical support.
Certified 2.5% volume methane-in-air calibration gas (approx. 50% LEL) – the standard span point for combustible-gas detector calibration.
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Stainless-steel fixed-flow regulator (0.5 or 1 LPM) for delivering calibration gas from disposable CAC cylinders to gas detectors.
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Certified 100 ppm carbon monoxide calibration gas, balanced in nitrogen, for accurate bump testing and span calibration of CO gas detectors.
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