Planar and PYROMID® Multi Channel Detectors

PYROMID® Multi Channel Detectors
Dual channel, quad channel and eight channel detectors for gas analysis
- Integrated beam splitter in the detector or micromechanical frame for compact design
- One common aperture opening for all channels
- Inside filter, common entry window
- Low channel crosstalk (< 0.1 %)
- Signal processing with JFET or operational amplifier
PYROMID® Multi Channel Detectors
Parameters
Type LIE, LIM: Detectors with standard design
LME, LMM: Detectors with reduced microphonic effect
LRE, LRM: Detectors with micromechanical frame
LFP: Detectors with tunable Fabry‐Pérot filter
LME, LMM: Detectors with reduced microphonic effect
LRE, LRM: Detectors with micromechanical frame
LFP: Detectors with tunable Fabry‐Pérot filter
Housing TO18, TO46: 5.4 mm in diameter
TO5, TO39: 9.2 mm in diameter
TO8: 15.2 mm in diameter
The number following the hyphen indicates the number of pins.
TO5, TO39: 9.2 mm in diameter
TO8: 15.2 mm in diameter
The number following the hyphen indicates the number of pins.
Channel Number of measuring channels
Aperture (mm) Size of the circular or rectangular aperture through which radiation hits the sensitive elements.
Operating modes Size of the circular or rectangular aperture through which radiation hits the sensitive elements.
JFET/OpAmp Integrated signal condition like integrated junction field effect transistors (JFET) for detectors in voltage mode or integrated operational amplifiers (OpAmp) for detectors in current mode.
Thermal Compensation A pyroelectric detector is sensitive to changes in temperature. Changes in ambient temperature have an influence on the measurement signal and shifts the operating point. This effect reduces a thermal compensation. Therefore, each pyroelectric element gets an additional optically inactive element, which compensates for unwanted currents.
Low Micro Patented micromechanical chip attachment (LowMicro) by InfraTec to reduce the effects of interfering impact sounds.
Detectivity* As a key parameter, the specific detectivity D* characterizes the signal-to-noise ratio of infrared detectors.

Type | Housing | Channel | Aperture (mm) | Operating modes | JFET/OpAmp | Thermal Compensation | Low Micro | Detectivity* | Download further information |
LRM-102 | TO46 | 2 | 3.05 x 2.05 | Voltage Mode | JFET | No | No | 4.0 | LRM-102 |
LRM-202 | TO46 | 2 | 3.05 x 2.05 | Voltage Mode | JFET | Yes | No | 4.0 | LRM-202 |
LIM-011 | TO8 | 4 | ø 2.5 | Voltage Mode | JFET | No | No | 0.8 | LIM-011 Beamsplitter |
LIM-054 | TO8 | 4 | 2.8 x 2.8 | Current Mode | OpAmp | No | No | 0.42 | LIM-054 Beamsplitter |
LRM-244 | TO8 | 4 | 8.5 x 8.5 | Current Mode | OpAmp | Yes | No | 6.0 | LRM-244 Single supply operation |
LRM-274 | TO8 | 4 | 8.5 × 8.5 | Current Mode | OpAmp | Yes | No | 6.0 | LRM-274 |
LRM-278 | TO8 | 8 | 8.5 x 8.5 | Current Mode | OpAmp | Yes | No | 4.5 | LRM-278
|
LIM-032 | TO39 | 2 | 2.8 x 2.8 | Voltage Mode | JFET | No | No | 2.9 | LIM-032 Beamsplitter |
LRM-254 | TO39 | 4 | 5.0 x 5.0 | Voltage Mode | JFET | Yes | No | 4.7 | LRM-254 |
LRM-284 | TO39 | 4 | 5.0 x 5.0 | Current Mode | OpAmp | Yes | No | 4.5 | LRM-284 Single supply operation |
*(500 K, 10 Hz, 1 Hz, 25 ºC, without window) [10E+8cmHz1/2/W]
LRM Detectors – Miniaturization in Series

Planar Multi Channel Detectors
Detectors for gas analysis and flame detection
- Two, three or four spectral channels in one housing
- Thermally compensated (optional)
- With special chip holder for reducing the microphonic sensitivity (optional)
- Low channel crosstalk (< 0.1 %)
- Signal processing with JFET or operational amplifier
Planar Multi Channel Detectors
Parameters
Type LIE, LIM: Detectors with standard design
LME, LMM: Detectors with reduced microphonic effect
LRE, LRM: Detectors with micromechanical frame
LFP: Detectors with tunable Fabry‐Pérot filter
LME, LMM: Detectors with reduced microphonic effect
LRE, LRM: Detectors with micromechanical frame
LFP: Detectors with tunable Fabry‐Pérot filter
Housing TO18, TO46: 5.4 mm in diameter
TO5, TO39: 9.2 mm in diameter
TO8: 15.2 mm in diameter
The number following the hyphen indicates the number of pins.
TO5, TO39: 9.2 mm in diameter
TO8: 15.2 mm in diameter
The number following the hyphen indicates the number of pins.
Channel Number of measuring channels
Aperture (mm) Size of the circular or rectangular aperture through which radiation hits the sensitive elements.
Operating modes Size of the circular or rectangular aperture through which radiation hits the sensitive elements.
JFET/OpAmp Integrated signal condition like integrated junction field effect transistors (JFET) for detectors in voltage mode or integrated operational amplifiers (OpAmp) for detectors in current mode.
Thermal Compensation A pyroelectric detector is sensitive to changes in temperature. Changes in ambient temperature have an influence on the measurement signal and shifts the operating point. This effect reduces a thermal compensation. Therefore, each pyroelectric element gets an additional optically inactive element, which compensates for unwanted currents.
Low Micro Patented micromechanical chip attachment (LowMicro) by InfraTec to reduce the effects of interfering impact sounds.
Detectivity* As a key parameter, the specific detectivity D* characterizes the signal-to-noise ratio of infrared detectors.

Type | Housing | Channel | Aperture (mm) | Operating modes | JFET/OpAmp | Thermal Compensation | Low Micro | Detectivity* | Download further information |
LIM-214 | TO8 | 4 | ø 9.5 | Voltage Mode | JFET | Yes | No | 4.5 | LIM-214 |
LIM-314 | TO8 | 4 | ø 9.5 | Voltage Mode | JFET | Yes | No | 3.5 | LIM-314 |
LMM-244 | TO8 | 4 | ø 9.5 | Current Mode | OpAmp | Yes | Yes | 6.0 | LMM-244 |
LMM-274 | TO8 | 4 | ø 9.5 | Current Mode | OpAmp | Yes | Yes | 6.0 | LMM-274 Single supply operation |
LIM-222 | TO39 | 2 | ø 6.0 | Voltage Mode | JFET | Yes | No | 4.5 | LIM-222 |
LIM-262 | TO39 | 2 | ø 6.0 | Current Mode | OpAmp | Yes | No | 4.5 | LIM-262 |
LIM-272 | TO39 | 2 | ø 6.0 | Current Mode | OpAmp | Yes | No | 3.0 | LIM-272 Single supply operation |
PYROMID® Brochure
Get further information about miniaturised detectors for gas analysis and flame detection.

Detector Search
InfraTec offers five different product groups including approximately 50 standard pyroelectric detectors. Choose your suitable infrared detectors with the help of our detailed detector search.
