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	V_s	μV	DC, H=330μW/cm² (3)
Signal-to-Noise Ratio	6,429	10,088	16,049	SNR	√Hz	DC, SNR=V_s/V_n
Responsivity	21.6	27.6	31.2	ℜ	V/W	DC, ℜ=V_s/HA (2)
Resistance	4.0	8.0	12	R	kΩ	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	V_n	nV/√Hz	V_n ²=4kTR
Noise Equivalent Power	.26	.42	.65	NEP	nW/√Hz	DC, NEP= V_n HA/V_s (2)
Detectivity	1.7	2.7	4.3	D*	10⁸cm√Hz/W	DC, D*=V_s/ V_n H√A (2)
Time Constant		38		ℑ	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 =\|V_A-V_B\|/V_B (2)
Element Separation		1.8			mm	Center to Center
Operating Temperature	-50		100	T_a	°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.

标签：Thermocouples

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