Pyro Detector

Single-Element Pyroelectric Detectors are often applied for temperature and gas measuring applications in one-channel or dual-channel variants, which is then one output per element. Single-Element variants are offered as thermally compensated devices. The principle of Gas monitor application is called NDIR. NDIR requires Detectors with narrow-band optical filters. Excelitas provides a range of suited filter windows for those gases which show an absoption band in the IR spectral range.

PYQ 1398, PYQ 1348 Single-Output Quad Pyros Excelitas' PYQ 1348 and PYQ 1398 Pyrodetectors provide four sensing elements in a geometric square placement. Electrically all elements are connected in series, forming one analog output signal. The two versions vary from each other by different window size and element spacings. This "Quad" Pyrodetector Series provides all four elements connected to one common output. All elements are electrically connected to one FET in source follower connection forming one analog output signal. Two different window options are provided: Rectangular window or square window size. Different geometrical placements are available on request. When being applied with suitable lens or mirror optics these detectors are used in ceiling mount devices. The PYQ 1348 is also available with smaller elements of 0.8x0.8 mm². Small elements are suitable for compact lenses and short detection distances.

Features

- TO-5 metal housing for EMI shielding - High-responsivity ceramic pyroelectric elements - Quad detector with 1 × 1 mm² (0.8 x 0.8 mm²) elements - 124° (140°) Field-of-view (PYQ 1348) - 103° Field-of-view (PYQ 1398) - Integrated FET in source follower configuration - Integrated EMI filtering stage Applications Mid (short)-distance motion detection (with lens) Energy saving applications Intrusion alarms Ceiling mounted applications

Specifications

- Responsivity: 6.5 (10.2) kV/W (typical) - Noise: 40 (60) µVpp (typical) / 100 (200) µVpp (max) - Operation requirements 2.0 -10 V - Housing with optical window: TO-5 - PYQ 1398 Field-of-view (horiz/vert): 103°/100° - PYQ 1348 Field-of-view (horiz/vert): 124°/124° (140°/140°)