DY-HT1-G Innovative Anti-Frost Low-Temperature Blackbody Furnace (-30°C to 80°C)

Our company’s DY-HT1-G low-temperature blackbody radiation source represents a technological breakthrough over traditional refrigeration-based blackbodies, particularly distinguishing itself in terms of stability and reliability within low-temperature environments. Through innovative design, this flagship product—the DY-HT1-G—effectively resolves the long-standing challenge in the field of low-temperature calibration: the issue of "frost accumulation causing emissivity drift." The product is characterized by four key features: nitrogen-free operation, intelligent control, portability, and high emissivity.

The device employs an innovative anti-frosting solution that combines a sealed structural design with optimized temperature control logic; this ensures the cavity remains dry even during operation at -30°C, thereby preventing moisture condensation from compromising the performance of the radiating surface. By eliminating the traditional reliance of low-temperature blackbody sources on nitrogen gas and cooling baths, the device is able to maintain a high emissivity of 0.995 ± 0.005—even during prolonged periods of continuous operation—thereby guaranteeing the repeatability and traceability of calibration results.

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Product Introductiondry of Blackbody Furnace

Black body in the industry is mainly used in the field of temperature measurement, the main product is black body furnace.

In the calibration and verification of radiation thermometers, the comparative method is usually adopted, that is, through the radiation source of high stability (usually black body radiation source) and other supporting equipment, the temperature reproduced by the standard apparatus and the temperature reproduced by the radiation thermometer are compared, in order to judge whether it is qualified or to give the calibration results.

As a standard radiation source, the standard black body is mainly used to calibrate radiation thermometers, infrared thermometers and radiation temperature sensing detectors.

At present, our company has advanced black body technology, full product range and wide temperature range of black body series products.

Product Feature of Blackbody Radiation Source

Compared to traditional blackbody sources, the advantages of the Demei blackbody radiation source include:

Breaking the -30°C Frosting Barrier:** Traditional refrigerated blackbodies are prone to frosting at temperatures below -30°C, leading to a decline in emissivity and measurement drift. In contrast, the DY-HT1-G low-temperature blackbody radiation source operates stably and without frosting at temperatures down to -30°C.
Addressing the Surging Demand for On-site Calibration:** The innovative, frost-resistant DY-HT1-G low-temperature blackbody furnace successfully eliminates the traditional reliance on compressed nitrogen for condensation prevention. By installing an infrared lens in front of the refrigerated blackbody target and creating a sealed nitrogen chamber, it physically isolates the target surface from ambient moisture. This effectively prevents condensation or icing on the target surface in sub-dew-point, low-temperature environments—all without requiring any external gas supply support.
Low Cost:** By eliminating the need for nitrogen consumption and associated auxiliary equipment, the device significantly reduces overall calibration costs.
High Reliability:** Through traceable calibration, any transmission loss caused by the infrared lens can be corrected, ensuring a high degree of consistency between the blackbody's radiation temperature and the measurements obtained by a standard infrared thermometer.
Resolving a Major Industry Pain Point:** This device effectively resolves the long-standing challenge of applying refrigerated blackbodies in field settings—a challenge historically plagued by condensation issues. It fills a critical technical gap in low-temperature infrared field calibration, providing a robust solution to meet the growing demand for rapid, convenient, and on-site calibration of online infrared thermometers.
High Portability:** The device is highly portable, making it ideally suited for field operations.
High Application Value:** This device offers a "plug-and-play, zero-prep, and no-consumables" calibration solution for high-frequency, outdoor, and mobile infrared temperature measurement scenarios—such as power grid inspections, petrochemical pipeline monitoring, cold chain warehousing, and new energy battery production lines. A single unit can save over 10,000 RMB annually in nitrogen costs alone, while significantly boosting both calibration efficiency and equipment availability.

Technical Indicators of Blackbody Radiation Calibration

Model	DY-HT1-G
Temperature Range	-30°C to 80°C
Control Mode	Touch Screen
Temperature Resolution	0.01°C
Temperature Control	PID Automatic Control
Cavity Diameter	Φ50mm
Emissivity	≥0.995
Temperature Stability	No greater than the larger of 0.1°C or 0.1%t (where t is the radiation source temperature); measured within a 10-minute interval.
Temperature Uniformity	No greater than the larger of 0.15°C or 0.15%t (where t is the radiation source temperature).
Power Supply	220V AC 50/60HZ
Power	500W
Programmable Function	Features programmable control capabilities with 10 reserved interface slots for different program settings. Offers one-touch operation for speed and convenience, meeting diverse user requirements for multiple test points and significantly improving testing efficiency.
Multi-Point Deviation	Intelligent touchscreen interface supports multi-point calibration, ensuring that actual operating temperatures align more closely with nominal values.
RS232 Communication (Included as a Free Upgrade)	Supports RS232 communication; other special communication requirements can be configured according to user specifications.
Field of View (FOV) Calculation Software	FOV Calculation Software: Developed by the company, this software calculates the object's physical size based on the specific infrared product's field of view and its distance from the object; conversely, it can also calculate the distance based on the object's size and the field of view.
Automatic Intelligent	Intelligent Regulation: Incorporates advanced control algorithms, including MH logic intelligent regulation and parameter self-tuning functions.
Temperature Fluctuation Curve Display	The system features a built-in temperature control curve display, allowing for real-time monitoring of temperature fluctuations.
Language Support	Defaults to Chinese; language interfaces for any region worldwide can be configured upon customer request.
Intellectual Property	The touchscreen control system for this blackbody radiation source has been granted a Computer Software Copyright Registration Certificate (Registration No.: 2020SR0565743).
Certification & Qualification	ISO 9001 Quality Management System Certification
Traceability Standard	For factory testing, a HEITRONICS transfer radiation thermometer is utilized to ensure the traceability of radiation temperature measurements. Following calibration against established fixed-point blackbody radiators, this instrument facilitates accurate temperature transfer and verification between blackbody radiation sources.
Dimension(L×W×H)	(455 × 200 × 335) mm
Weight	18Kg

Note: other special requirements can be customized according to the needs of users