The SBIR Infinity EXLT Series Extended Area Low-Temperature Blackbody Source is designed for applications where temperatures below the 0°C limit of standard blackbodies must be generated. This blackbody system can achieve temperatures as low as -40°C in an uncontrolled lab environment. For applications such as low-background flood mode testing of detectors, the Model EXLT can eliminate the need for expensive and cumbersome temperature chambers or other special provisions to achieve these cold backgrounds. 

A recirculating refrigerated bath cools the blackbody to approximately the desired temperature using a proprietary fluid. Then a sophisticated electronic control system and an array of thermoelectric coolers control the blackbody surface precisely at the desired setpoint. The EXLT Series includes all of the components needed for operation: blackbody, refrigerated bath, temperature controller, cables, and hoses. Operation of the system is straightforward, and maintenance is minimal. 

A key feature is the new iProbe from SBIR. This intelligent temperature sensor is calibrated independently of the blackbody system. To re-calibrate the system you need only exchange the probe with a recently calibrated one. No special equipment is required thus minimizing downtime. Additionally, an optional new ultra-black surface coating –VANTABlack®-S – can be applied to the source plate providing unprecedented emissivity on a flat plate blackbody system. 

The EXLT is a low cost, easy-to-use solution for applications requiring a low temperature blackbody source. 

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Intelli-Probe (iProbe) 
The iProbe from SBIR is an intelligent temperature sensor that is calibrated independently of the blackbody system. To re-calibrate the system you need only exchange the probe with a recently calibrated one. No special equipment is required thus minimizing downtime.

Accuracy
Ultra-stable, highly responsive iProbes are used to provide very precise control and accurate system performance. The iProbes are calibrated to an accuracy of 0.010ºC. System uncertainty including calibration and stability is +/- 0.01ºC or +/- 0.1% of set delta T whichever is greater. 

Uniformity
The Infinity blackbody incorporates design and construction features that maximize spatial uniformity and minimize convection influences resulting in typical surface uniformity of > 98% of set differential temperature or 0.010ºC, whichever is greater over 90% of the emitting surface area.

Emissivity
A surface treatment is used to create a spectrally flat emissivity of > 0.970 (3µm to 5.5µm), > 0.950 (8µm to 14µm)

Milli-Kelvin Temperature Stability
SBIR has developed unique temperature measurement and analog-to-digital conversion circuitry with integrated control logic that results in extremely responsive temperature control. True set point and precise milli-kelvin control have been achieved allowing for precision testing at contrast levels of 1 milli-kelvin.

LabVIEW Driver Support
SBIR Infinity blackbodies and integrating spheres can be easily incorporated into your LabVIEW application routines. 

Multi-Function Controller
The 19″ 2U rack mountable controller features a touch screen display and supports remote computer control over Ethernet and optional IEEE-488 (GPIB) or RS-232 interfaces.

The controller will also operate all of the SBIR peripherals: target wheels, visible illuminators, pulsed laser diodes, range slides, source slides and filter wheels. 
Blackbody controller

Automatic Radiometric Compensation (Optional Upgrade)
Attenuation caused by optics, differences in emissivity, ambient temperature change, and waveband of interest may result in reduced radiometric accuracy. When operating the controller in the radiometric mode, compensation for these factors is automatically applied, adjusting the blackbody as required to produce the correct radiometric output. This option includes a probe block and temperature sensor for accurate ambient temperature measurement. 

IRWindows™ Advanced EO Test and Analysis Tool (Optional Upgrade)
The Infinity Series is optimized for seamless integration with the SBIR’s IRWindows™4 test system. IRWindows™4 is an advanced software tool that automates the setup, execution, data collection and results analysis for industry standard performance testing of infrared, visible and laser sensor systems.

Configurations
The Infinity Differential Blackbody system includes a temperature controller (19” rack mount or desktop configuration), blackbody head, interconnect cable, power cable and manual. The blackbody heads are available with emitting surface sizes including 4”, 6”, 8” and 12” square. Standard and optional temperature ranges can be viewed in the Specifications section.

VANTABlack®-S High Emissivity
An optional coating utilizing VANTABlack®-S can be applied to the source plate providing unprecedented blackbody emissivity in both the MWIR and LWIR. MWIR emissivity is greater than 99.8% +/-0.1% and LWIR emissivity is greater than 99.5% +/-0.15%. SBIR now offers the Vantablack coating on blackbody applications worldwide under an exclusive licensing agreement with the manufacturer of this exciting proprietary treatment.

Communication
All Infinity systems come with ethernet communication. In addition, IEEE-488(GPIB) and RS-232 communication channels are also included for remote computer control of all blackbody, calibration, illuminator and target wheel functions.

Radiometric Differential Temperature 
Radiometric differential temperature accuracy is enhanced with this feature by accounting for error due to optical attenuation background temperature differences and non-unity emissivity. This option includes a probe block and temperature sensor for accurate ambient temperature measurement.

Targets 
Many standard and custom infrared targets are available. These targets can be supplied with either emissive or reflective coatings. See the Target section for details.

Target Wheels & Illuminators
Multiple targets can be rapidly and precisely positioned in front of the blackbody. Target position can be set from the front panel of the controller or via the computer interface. For details on the full line of target wheels with optional illuminators see SBIR’s Target Wheelsection.

Rack Mounting 
The blackbody controller is designed for bench-top or standard 19 inch rack use. Rack mounting ears come standard with the instrument. A rack slide kit is also available.

IRWindows™ Advanced E-O Test and Analysis Tool
The Infinity Series is also optimized for seamless integration with the SBIR’s IRWindows™4 test system. IRWindows™4 is an advanced software tool that automates the setup, execution, data collection and results analysis for industry standard performance testing of infrared, visible and laser sensor systems.

Click on one of the below links to view a PDF outline drawing:

4″ Infinity EXLT Blackbody PDF
8″ Infinity EXLT Blackbody PDF
Infinity Controller PDF

Available Sizes 4”& 8”
   
Standard Temperature Range C     -40ºC to +100 Absolute
Optional Range D -40ºC to +175 Absolute
   
Emissivity > 0.970 (3µm to 5.5µm), > 0.950 (8µm to 14µm)
   
Uniformity >98% of Tset – Tambient or 0.010ºC whichever is greater, over 90% of the emitting surface area
   
Absolute Accuracy ±0.010ºC for 0ºC
   
Stability σT≤0.001ºC (0ºC to 50ºC), σT≤0.002ºC (-40ºC to 0ºC and 50ºC to 100ºC), 
σT≤0.003ºC (110ºC to 175ºC)
   
Display Resolution 0.001ºC or 0.0001ºC
Setpoint Resolution 0.001ºC
Ready Indicator Selectable ±0.001ºC to ±5.000ºC
   
SLEW RATE1  
   
Approximate Heating Rate +0.40ºC/sec. at 25ºC
Approximate Cooling Rate -0.20ºC/sec. at 25ºC
Settling Time 45-120 seconds
   
ENVIRONMENTAL  
   
Operating Temperature 0˚C to 50˚C
Storage Temperature -20˚C to 70˚C
Relative Humidity 5% to 95%, non-condensing
Power Requirements 100-120/220-240 VAC at 60/50Hz
Maximum Power Consumption 850W-1600W depending on size and temperature range
Approximate Blackbody Weight EXLT-04—25.0 lbs., EXLT-08—65 lbs.
Approximate Controller Weight 15.0 lbs.
Notes:

  1. Slew rate for 4” model shown. Slew rates vary depending on blackbody size and environmental conditions

* Specifications subject to change without prior notice

flood mode drawing

EXLT Series Blackbody 3D models for download: 

4 IN EXLT CHILLED BLACKBODY ZIP
8 IN EXLT CHILLED BLACKBODY ZIP

SBIR classifies model numbers based on six different features that a customer can choose from. They are blackbody model number, blackbody size, temperature range, input voltage, cable length, communications interface option and configuration option.

For example, a 4″ EXLT Infinity model with IEEE 488 GPIB communication interface, 115/60Hz with US power cable, temperature range of -40˚C to +100˚C, cable length of 10 feet and no configuration option has the following part number: EXLT-04-C-L-10-EGS

EXLT-04-C-L-10-EGS-R

A 4″ EXLT Infinity model with VANTABlack®-S high emissivity coating, IEEE 488 GPIB communication interface, 115/60Hz with US power cable, temperature range of -40˚C to +100˚C, cable length of 10 feet and no configuration option has the following part number: EXLT-04H-C-L-10-EGS

EXLT-04H-C-L-10-EGS-R

• Differential Blackbody: EXLT

• Differential Blackbody Size: 04″, 08″

• Temperature Range:
C = -40ºC to 100ºC Absolute
D= -40ºC to 175ºC Absolute

Power Cable:

H- Europe (Germany, Netherlands, France, Sweden), South Korea & Turkey
I- Australia & China
J- UK & Ireland
K- Italy
L- US & Japan
M- India & South Africa
N- Israel

Cable Length: 10 ft., 25 ft., 50 ft.

• Interface Options:
EGS- Ethernet, IEEE-488 GPIB and RS-232

• Configuration Options:
R- Radiometric Compensation

Please contact the SBIR sales team at (805) 965-3669 or sales@sbir.com to ensure the proper part number and to receive a quotation.

Information subject to change without notice