ePR44xx2 (TO) - (Rev. 1.1)
PRELIMINARY
ezPyro™ TO I
2
C Pyroelectric Infrared Flame Sensor
Introduction
The ezPyro range of thin film digital pyroelectric sensors for
flame detection combines high quality sensors with a high
level of configurable electronic integration in an industry
standard TO-39 package. High sensitivity combined with
fast response times ensure rapid and accurate flame
detection. The high dynamic range allows detection of
small and large flames, nearby or over larger distances.
These sensors integrate a digital, current mode read-out
offering high responsivity over the full frequency range of
flame flicker (3-30 Hz). Programmable gain and filtering
offer maximum flexibility in system design. Industry
standard I
2
C communication enables plug-and-play connectivity to microcontrollers and allows easy tuning and
calibration. Pyreos sensors are very stable over time ensuring a long and maintenance-free operational lifespan.
Various optical filter options are available. These sensors can also be daisy-chained to allow synchronized sampling
across devices and offer various low power modes.
Sensor Characteristics
Filter aperture
Electrical Characteristics
Supply voltage
Supply current (typ.)
Digital I/O
ADC
Operating Temperature
Storage Temperature
Sensor read-out
Configurable
1.75 to 3.6 V
1 to 23
μA
I
2
C (FM+ compatible)
15-23bit
ΔΣ
ADC @1ksp
-40 to +85
°C
-40 to +110
°C
Current mode
Gain / digital filtering /
sampling rate / power
modes
5.2 mm x 4.2 mm
1.0 mm x 1.0 mm
TO-39
Tbc
Tbc
~10ms (10-20 Hz peak)
>100°
Element size
Sensor Package
D* (typ.)
1
NEP (typ.)
1
Time Constant
Field of View
1)
Measured without filter @ 500K, 10 Hz, room temperature
Field of View
For V across horizontal
window aperture
For V across vertical
window aperture
For V across diagonal
window aperture
Note: Normalised polar plots show typical FoV along x,y axis and diagonal with 4.48µm/620nm filter applied,
with infrared source being a blackbody radiator at 500 K temperature.
Please note: the information contained in this document is subject to change without further notification. Pyreos reserves the right to alter the performance and any resulting
specification. Pyreos may choose not to supply any engineering sample devices as a commercial product. No responsibility is accepted for any consequential loss incurred.
Pyreos Ltd, SMC, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK. Tel: +44 131 650 7009,
www.pyreos.com
© 2018 Pyreos Ltd.
ePR44xx2 (TO) - (Rev. 1.1)
PRELIMINARY
Ordering Information
Please quote ezPyro TO Flame Sensor and your desired filter or specific part number ePR44xx2 as per filter table.
Contact:
sales@pyreos.com
Mechanical Drawing
Filter Information
Part number
(marking)
Filter name
Cut on wavelength typical (μm)
Cut off wavelength typical (μm)
ePR44212
(R44212)
3.91 µm
bandpass
3.865
3.955
ePR44252
(R44252)
4.48 µm
bandpass
4.17
4.79
ePR44282
(R44282)
4.55
µm
bandpass
4.34
4.76
ePR44112
(R44112)
5.0 μm
cut on
5.0
-
Filters block up to 8
µm.
Please note: the information contained in this document is subject to change without further notification. Pyreos reserves the right to alter the performance and any resulting
specification. Pyreos may choose not to supply any engineering sample devices as a commercial product. No responsibility is accepted for any consequential loss incurred.
Pyreos Ltd, SMC, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK. Tel: +44 131 650 7009,
www.pyreos.com
© 2018 Pyreos Ltd.
Package dimensions
Bottom View
Top View
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