Gas sample cell VKM0470416

measurement

Short description
The MH Multipass 2.5 - 4-channel pyro is a Herriott-type multipass gas cell providing an approx. 2.5 m optical path in a compact 120 mm housing, designed for simultaneous 4-channel pyro/thermopile detector configurations.

Key facts

• Compact Herriott-type multipass cell (approx. 2.5 m optical path / 120 mm total length)
• Optimized for Micro-Hybrid JSIR 350-4 emitters and multi-channel IR detectors
• Rigid, vibration-resistant mirror mounts for stable alignment
• 6061-T6 aluminum housing with PTFE coating, gold-coated K9 mirrors, CaF₂ windows
• Gas-tight O-ring sealing
• Detects CO, CO₂, CH₄, SO₂, NO, N₂O, SF₆ and other IR-active gases
• Operating temperature range: -20 °C to +60 °C

Description
The MH Multipass 2.5 - 4-channel pyro is a quad-channel high-precision gas cell engineered to increase sensitivity in non-dispersive infrared (NDIR) gas analysis. Using a Herriott configuration, the optical path is extended to approximately 2.5 m within a compact 120 mm housing, allowing simultaneous measurement on four independent channels for multi-component analysis or reference signals.

The housing is machined from 6061-T6 aluminum with a PTFE protective coating to provide corrosion resistance and minimize contamination risks in humid or chemically aggressive environments. Optical components include gold-coated K9 mirrors and CaF₂ windows to ensure high reflectivity and infrared transmission across a broad wavelength range. Robust, vibration-resistant mirror mounts secure optical alignment for stable long-term signal integrity under dynamic industrial conditions.

A gas-tight O-ring sealing system supports safe operation from 500 to 1300 mbar and temperatures between -20 °C and +60 °C, ensuring consistent measurement performance throughout the product lifecycle. The cell is optimized for JSIR 350-4 infrared emitters and quad-channel thermopile or pyroelectric detectors from Micro-Hybrid, providing a matched optical interface within Micro-Hybrid NDIR platforms.

The flexible measurement cell can be configured for a range of gases and monitoring tasks, including CO, CO₂, CH₄, SO₂, NO, N₂O and SF₆. Its compact mechanical and optical design enables reliable integration into emissions monitoring systems, analytical instruments and OEM NDIR modules where sensitivity, stability and footprint are critical.

Bulk prices (table)
starting from 1 -> 1,736.59 €
starting from 5 -> 1,335.84 €
starting from 10 -> 1,200.45 €

Characteristics / technical specifications

• Model / series: HC 2500 quad (optimized quad-channel cell)
• Optical path: approx. 2.5 m (Herriott configuration)
• Total housing length: approx. 120 mm
• Channels: 4 (quad-channel simultaneous measurement)
• Compatible emitters/detectors: optimized for JSIR 350-4 emitters; quad-channel thermopile or pyroelectric detectors
• Housing material: 6061-T6 aluminum with PTFE protective coating
• Mirrors: gold-coated K9 mirrors
• Windows: CaF₂ (calcium fluoride)
• Sealing: gas-tight O-ring seal
• Operational pressure range: 500 to 1300 mbar
• Operating temperature range: -20 °C to +60 °C
• Design features: rigid, vibration-resistant mirror mounts for stable alignment; compact, corrosion-resistant construction
• Detectable gases: CO, CO₂, CH₄, SO₂, NO, N₂O, SF₆, etc.