DR34 - Compensated Thin-Film Thermopile Detector

上海仪舶实验室自动化 25-02-05 10:38:32

DR34 - Compensated Thin-Film Thermopile Detector

Dexter's DR34 is a thin-film thermopile detector that comes in a TO-5 package. It is a dual channel device having a two-channel or one-channel design that delivers low noise output.

The dimensions of each active area are 3.16mm x 0.4mm. The channel-to-channel crosstalk is minimized using an internal aperture, thereby improving the device’s sensitivity.

Benefits

The main benefits of the Dexter's DR34 thermopile detector include:

Dual channel design

Low noise

High sensitivity

Reduced channel-to-channel crosstalk

Applications

The major applications of the Dexter's DR34 thermopile detector include:

Analysis of environmental air quality including greenhouse gases

Industrial and medical monitoring including infant incubators

Automotive gas analysis

Technical Specifications

The technical specifications of the DR34 thermopile detector are summarized in the following table:

Parameter Min Typical Max Symbol Units Comments
Active Area size 3.16 x .4 AA mm Hot junction size, per element.
Element Area 1.264 A mm2
Number of Junctions 40 Per element.
Number of Channels 2 Per detector package.
Output Voltage 90 115 130 Vs μV DC, H=330μW/cm2 (3)
Signal-to-Noise Ratio 6,429 10,088 16,049 SNR √Hz DC, SNR=Vs/Vn
Responsivity 21.6 27.6 31.2 V/W DC, ℜ=Vs/HA (2)
Resistance 4.0 8.0 12 R Detector element
Temperature Coefficient of ℜ -.36 %/°C Best linear fit, 0° to 85°C (1)
Temperature Coefficient of R .2 %/°C Best fit, 0° to 85°C (1)
Noise Voltage 8.1 11.4 14.3 Vn nV/√Hz Vn 2=4kTR
Noise Equivalent Power .26 .42 .65 NEP nW/√Hz DC, NEP= Vn HA/Vs (2)
Detectivity 1.7 2.7 4.3 D* 108cm√Hz/W DC, D*=Vs/ Vn H√A (2)
Time Constant 38 ms Chopped, -3dB point (1)
Field of View NA FOV Degrees Not Applicable
Package Type TO-5 with 5 Pins Standard package hole size: Φ.180”
Element Matching 5 10 M % M =|VA-VB|/VB (2)
Element Separation 1.8 mm Center to Center
Operating Temperature -50 100 Ta °C

General Specifications: Flat spectral response from 100nm to > 100µm. Linear signal output from 10-6 to 0.1W/cm2. Maximum incident radiance 0.1W/cm2, damage threshold ≥ .5W/cm2

Notes: (1) Parameter is not 100% tested. 90% of all units meet these specifications. (2) A is detector area in cm2. (3) Test Conditions: 500K Blackbody source; Detector active surface 10cm from 0.6513cm Diameter Blackbody Aperture.

General Specifications

The general specifications of the DR34 thermopile detector include:

Flat spectral response from 100nm to > 100µm

Linear signal output from 10-6 to 0.1W/cm2

Maximum incident radiance is 0.1W/cm2

Damage threshold is ≥ 0.5W/cm2

Notes

Specifications apply at 23°C with KBr window and nitrogen encapsulating gas

Parameter is not 100% tested. 90% of all units meet these specifications.

A is detector area in cm2.

Test conditions: 500K blackbody source; detector active surface 10cm from 0.6513cm diameter blackbody aperture.

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