Pyroelectric infrared sensor VKM0470417

non-dispersivethermopile

Short description
The MH Multipass 3,9 - 4 channel pyro is a quad-channel high-precision gas cell that significantly increases sensitivity in non-dispersive infrared gas analysis (NDIR). Based on a Herriott configuration, the optical path in a compact 120 mm housing has been extended to approximately 3.9 meters, allowing simultaneous measurement across four channels for precise detection of trace gas concentrations.

Design and materials
The housing is made of 6061-T6 aluminum with a PTFE protective coating for corrosion resistance and reduced contamination risk. The cell uses gold-coated K9 mirrors and CaF2 windows to ensure excellent reflectivity and infrared transparency over a wide wavelength range. Stable, vibration-resistant mirror mounts secure optical alignment and long-term signal integrity.

Performance and compatibility
The HC 3900 quad is optimized for JSIR 350-4 infrared emitters and multi-channel pyro or thermopile detectors from Micro-Hybrid, providing a matched optical interface for Micro-Hybrid’s all-in-one NDIR platform. The flexible measurement cell can be configured for various gases and environmental parameters, making it suitable for emission monitoring systems, analytical instruments, and OEM NDIR modules.

Key facts

• Compact Herriott-type multi-pass cell (approximately 3.9 m optical path / 120 mm total length)
• Optimized for Micro-Hybrid JSIR 350-4 emitters and multi-channel pyro detectors
• Rigid, vibration-resistant mirror mounts for stable alignment
• 6061-T6 aluminum with PTFE coating, gold-coated K9 mirrors, CaF2 windows
• Gas-tight O-ring seal
• Detects CO, CO2, CH4, SO2, NO, N2O, SF6 and other gases
• Operational temperature: -20 °C to +60 °C

Bulk prices
starting from 1 — 1.736,59 €
starting from 5 — 1.335,84 €
starting from 10 — 1.200,45 €

Applications
Compact design combined with high sensitivity makes the cell ideal for compact analytical instruments, emission monitoring, OEM NDIR modules and other industrial applications requiring robust, sensitive, multi-channel gas analysis.

Caractéristiques / spécifications techniques

• Model (internal designation): HC 3900 quad
• Optical path length: approx. 3.9 m (Herriott configuration)
• Total housing length: approx. 120 mm
• Housing material: 6061-T6 aluminium with PTFE coating
• Mirrors: gold-coated K9 mirrors
• Windows: CaF2 (calcium fluoride)
• Seal: gas-tight O-ring
• Operational pressure range: 500 to 1300 mbar
• Operational temperature range: -20 °C to +60 °C
• Optimized for: JSIR 350-4 emitters and quad-channel thermopile/pyroelectric detectors
• Detected gases (examples): CO, CO2, CH4, SO2, NO, N2O, SF6
• Features: compact Herriott-type multipass design, vibration-resistant mirror mounts, rigid mirror mounts for stable alignment