Gas Sensing

Excelitas offers a number of thermopile detectors and pyrodetectors for gas sensing and monitoring.

These include thermopile detectors equipped with specialised bandpass filters for gas detection e.g. TPiD 1T 0515-Gx, where Gx is one of the Excelitas gas filters. The devices employ chips with large absorber size and have very high signal output for optical gas detection.

The PYSxxxx detector range has been designed for gas sensing applications. They are available with a range of narrow band pass filters for various gas types, in combination with a reference filter. Features include larger element sizes to offer more signal for non-focused optical systems, additional EMI protection and thermal compensation for compensation of thermal effects caused by temperature changes of the housing.

Single Channel Analogue Pyro

High sensitivity pyros for gas sensing and monitoring - TO-5 metal housing, selection of narrow band filters, thermal compensation.

Dual Channel Analogue Pyro

Dual channel high sensitivity pyros for gas sensing and monitoring - two individual elements, each with individual filter window. TO-5 metal housing, selection of narrow band filters, thermal compensation.

Single Channel DigiPyro

The PYS 3798 TC is the digital equivalent to LHi 807 TC. It includes additional the temperature reference as a separate output. The two signals are presented in one 28-bit digital bit stream communicated via a single wire “Direct Link” interface to a suitable host microprocessor.

TO-5 metal housing, selection of narrow band filters, thermal compensation.

Dual Channel DigiPyro

This series includes a triple channel version, with two optical channels and an additional temperature reference signal. All 3 channels are output in one 42-bit digital bit stream communicated via a single wire “Direct Link” interface to a suitable host microprocessor.

TO-5 metal housing, selection of narrow band filters, thermal compensation.

Single Channel Analogue Thermopile

TPD 1T 0625 – High-Sensitivity Thermopiles

This Thermopile Detector is specially designed for high Signal output level. It is equipped with an internal thermistor serving as temperature reference for thermopile temperature compensation. The detector is offered in TO-5 housing with square size window and narrow band pass filter options.
Dual Channel Analogue Thermopile

TPD 2T 0625 – Dual-Channel Thermopile

This specially designed detector offers Dual Channel performance in a TO-39 metal housing with two individual optical windows. The TPD 2T 0625 is equipped as standard with an internal thermistor as temperature reference for thermopile temperature compensation.
Pyro applications information Download our application note on using pyros for gas sensing