Product Description:
JSIR 350-4 MEMS Infrared Light Source Infrared Emitter For NDIR Gas
Measurement
Features:
The infrared emitter, with 4 chips on the TO8 connector, is used to
measure gases with low concentration or low absorption
characteristics. The version with a windowless reflector in the
standard TO8 housing is also suitable for long measuring distances
from 30 cm. This MEMS-based filament emitter counterpart has a
significantly longer lifetime and less drift.
Unlike filament infrared sources, the JSIR 350 Quad emitter is
modulated/pulseable and does not require an additional chopper.
High-performance nanoamorphous carbon diaphragms can achieve
diaphragm temperatures of up to 850 °C for long-term stable
radiation output. The JSIR 350 Quad IR transmitter is ideal for a
variety of gas analysis applications in industrial aerospace and
other demanding applications.
IR illuminators can be used with MTS thermopile detectors or MPS
pyro detectors. The combination with a Micro-Hybrid IR detector
ensures better performance when analyzing gas concentrations and
ensures accurate measurement results.
Performance characteristics
Wide emissivity 2-15 µm
Membrane temperature up to 850 °C
High radiation output
High modulation frequency
Long life (reliability due to high membrane stability)
HermeSEAL technology is available
Technical parameter Open / window N2 Unit
Spectral output range 2 ... 15 μm
Active area 2.2 x 2.2 mm2
Hot resistant 1 40 ± 20 Ω
Temperature coefficient 2 typ. 500 ppm/K
Time constant 0-63 % typ. 12.5 ms
Nominal power consumption 3 650 mW
Operation voltage 4 typ. 4.9 V
Operation current 4 typ. 132 mA
Recommended driving mode Power mode
Active area temperature 1,5,6 610 ± 30 °C
Window
Available: Sapphire, BaF2, CaF2, Si ARC, other on
request
Housing TO39
Estimated lifetime 7,8 > 5 000 h at 740 °C
> 100 000 h at 610 °C
Absolute max. ratings
Input power 3,5 1 200 mW
Housing temperature 8 185 without window,
85 with window °C
Active area temperature 850 °C
Specifications:
| Effective area [mm2] | 2.2 x 2.2 |
| Energy consumption | Normal |
| Wide emissivity | 2-15 µm |
| Membrane temperature up to | 850 °C |
