IR detectors, IR imagers, IR cameras, spectrometers, cryogenic systems, cryostats & dewars

Cryogenic Solutions and IR Instruments for Research
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HDL Series Dewars

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HDL Series
The helium dewars in the HDL line contain two cryogenic vessels. The LN₂ vessel directly cools a radiation shield that surrounds the LHe vessel and the cold work surface. All interior dewar surfaces are lined with metal foil in order to provide additional shielding.

Standard work surface diameters are 5, 8, 10, 12, and 14 inches. Larger sizes, including rectangular extensions, are available upon special request.

Applications
HDL Systems are frequently used for mid- and far-infrared detector and camera systems, including bolometers, photo detectors, and InSb. Applications also include materials testing, electronic component testing, and the cooling of entire stand alone instruments.

Features

Operating temperature range: 2K to 4.2K (with low temperature modification)
Liquid cooled radiation shield
Multiple layers of shielding foil
Completely customizable configuration

Specifications for HDL Series Dewars

Inches	HDL-5	HDL-8	HDL-10	HDL-12	HDL-14
Dewar Outside Diameter (in)	6.95	9.95	11.95	13.70	15.95
Dewar Height	12.50	12.31	13.50	13.75	13.75
Cold Plate Diameter	5.12	8.12	10.18	12.00	14.18
Work Area Height ("B" Dimension	1.50	1.50	2.00	2.00	2.00
Weight Without Cryogens (lbs)	15.75	26.00	42.00	54.00	68.00
LN₂ Capacity (L)	0.8	2.3	4.2	6.1	8.4
LN₂ Hold Time (Standard Supports) (hrs)	30	30	35	--	--
LN₂ Hold Time (Rigid Supports) (hrs)	20	27	32	48	60
LHe Capacity	1.2	2.6	4.4	6.6	8.7
LHe Hold TIme (Standard Supports) (hrs)	90	100	135	--	--
LHe Hold Time (Rigid Supports) (hrs)	25	30	47	55	78

Centimeters	HDL-5	HDL-8	HDL-10	HDL-12	HDL-14
Dewar Outside Diameter (cm)	17.65	25.27	30.35	34.80	40.51
Dewar Height	31.75	31.27	34.29	34.92	34.93
Cold Plate Diameter	13.00	20.62	25.86	30.48	36.02
Work Area Height ("B" Dimension)	3.81	3.81	5.08	5.08	5.08
Weight Without Cryogens (kg)	7.16	11.82	19.02	24.55	30.91
LN₂ Capacity (L)	0.8	2.3	4.2	6.1	8.4
LN₂ Hold Time (Standard Supports) (hrs)	30	30	35	--	--
LN₂ Hold Time (Rigid Supports) (hrs)	20	27	32	48	60
LHe Capacity	1.2	2.6	4.4	6.6	8.7
LHe Hold TIme (Standard Supports) (hrs)	90	100	135	--	--
LHe Hold Time (Rigid Supports) (hrs)	25	30	47	55	78

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