12
PYROELECTRIC
DUAL ELEMENT
DETECTORS FOR
INTRUSION
ALARM
LHi 968, PYD 1398 – High-End Pyro
www.excelitas.com
PYROELECTRIC DETECTORS FOR INTRUSION ALARM
LHi 968, PYD 1398 – High-End Pyro
Responsivity, min.
Responsivity, typ.
Match, max.
Noise, max.
Noise, typ.
Spec. detectivity
Field of view, horizontal
Field of view, vertical
Source voltage
Operating voltage
EMI performance
WLI
Height
Optical element location
Filter size
Parameter Symbol
Rmin
Rtyp
Mmax
Nmax
Ntyp
D*
FoV
FoV
h
he / ho
X / Y
LHI 968
3.3
4.0
10
50
20
19
100°
100°
0.2 - 1.5
2.0 ... 12
***
***
4.2
2.6 / 0.95
5.2 / 4.2
PYD 1398
3.3
4.0
10
50
20
19
100°
100°
0.2 - 1.5
2.0 ... 12
****
****
4.2
2.6 / 0.95
5.2 / 4.2
Unit
kV/W
kV/W
%
µVpp
µVpp
107 cm*√Hz/W
V
V
mm
mm
mm
Remark
f = 1 Hz
f = 1 Hz
0.4…10 Hz / 20° C
0.4…10 Hz / 20° C
1 Hz / 1 Hz BW / 20° C
Unobstructed
Unobstructed
47 kΩ / 20° C / 5 V
47 kΩ / 20° C
*** Improved, **** Excellent
All dimensions in mm
Applications
• Intrusion alarm
• High-end motion sensors
Features and Benefits
• TO-5 metal housing
• Improved EMI protection
• Improved WLI
Product Description
e LHi 968 series with standard Dual Element conguration is performance-proven in high-end
applications. e LHi 968 design provides for a reduced sensitivity to EMI and excellent White Light
Immunity (WLI). e PYD 1398 has higher RF immunity and is optionally available with grading
for lower white light sensitivity.
0211-741.jb18 XLTS_CAT Infrared Sensing.indd 12 3/22/11 10:47 AM
