Heimann Pirani Vacuum and Pyroelectric IR Sensor Families

Heimann HVS Pirani vacuum sensor family; pyroelectric detectors vary — Heimann official pictured model: HVS Pirani vacuum sensor family; pyroelectric detectors vary. Not all listed families share this appearance.

MEMS Pirani vacuum-pressure elements and pyroelectric infrared sensing components.

Original manufacturer: Heimann Sensor.

Technology distinction: An IR emitter, filter or thermopile sensing element alone is not a calibrated complete CO₂ or gas detector. No Ex-proof finished-equipment certification is implied.

Original Manufacturer Portfolio

Heimann official product family details →

Exact chip package, optical filter, field of view and temperature range require the manufacturer’s current part-number datasheet.

Pirani vacuum versus pyroelectric infrared

Heimann Pirani vacuum sensors and pyroelectric IR detectors measure different physical quantities and should not be listed as interchangeable sensors. A Pirani gauge requires gas-specific pressure calibration and suitable electronics; a pyroelectric detector responds to modulated radiation through a chosen optical filter. The current picture represents an HVS Pirani model only. Separate model sheets are needed for each family’s performance, packaging and application.

Heimann HVS Pirani vacuum sensors: two pressure ranges

Option / criterion	Original maker technical detail	Design implication
HVS 04 Pirani	1000 mbar atmospheric down to 10⁻³ mbar; 1.0×1.0 mm sensor chip; TO-39	Useful from rough vacuum towards medium vacuum; response depends on gas-specific thermal conduction.
HVS 03k Pirani	10 mbar down to 10⁻⁵ mbar; 4.0×4.0 mm chip, TO-39	Use for a deeper vacuum range where HVS 04 loses sensitivity.
HVS 03k + 04 dual	TO-8 double chip spans 1000 mbar down to 10⁻⁵ mbar	Two independent elements/response regimes; not a single flat percentage accuracy over five decades.
Electrical / environment	2 V stated supply for HVS chips; operating −20…+120°C, storage −40…+120°C	Requires heated-element/reference calibration and host front-end for vacuum response.
Pyroelectric detectors	Separate radiation-sensing technology, not Pirani pressure sensing	A pyroelectric device responds to varying infrared flux; exact pyroelectric model ratings are not assigned here without an OEM specific sheet.

Selection, integration and qualification

A Pirani vacuum gauge measures thermally conductive gas pressure and is gas-composition dependent: air calibration is not universally valid for He/H₂/CO₂. The photograph depicts an HVS Pirani model only; the page also mentions pyroelectric IR families, which need separate detector-specific documentation. This is not a gauge for HVAC filter differential pressure.

Original manufacturer references: Heimann HVS Pirani model comparison · Heimann products portfolio.