Import 300~1200 C Test Furnace For Thermocouple — Buy in wholesale FOB from Supplier in China

The DTL series thermocouple verification furnace from Tai'an Detu Automation Instrument Co., Ltd. is a horizontal tube furnace designed to generate a stable, uniform temperature field for calibrating standard, working precious metal, and base metal thermocouples. Operating range spans 300°C to 1200°C, with furnace inner dimensions of 40 mm diameter by 600 mm heated length in the standard DTL-600 configuration. The temperature field meets JJF1184-2007 thermocouple verification furnace temperature field test technical specification, a Chinese national metrological verification regulation.

Thermal insulation and anti-leakage are highlighted as design strengths, with the furnace using refractory lining and heating elements arranged to minimise radial and axial temperature gradients. For the DTL-600 low-cost metal variant, the effective working area maintains a maximum temperature difference of 0.5°C between any two points within 30 mm of the centreline, and 0.25°C radial variation within 14 mm radius at the same cross-section. The DTL-600B precious metal variant targets S-type thermocouple calibration with a maximum temperature point deviation from geometric centre within 20 mm and a temperature gradient specification per 10 mm axial distance.

This equipment suits metrology laboratories, calibration centres, and industrial quality departments that maintain traceable temperature measurement chains. The DTL-300 shorter variant (40 mm by 300 mm) is intended for S, R, and short metal optic thermocouples where a reduced uniform zone is acceptable. Buyers should confirm with Tai'an Detu whether the furnace controller is included, its PID algorithm and sensor type, communication interfaces, and whether software for automatic calibration cycles is available or optional.

Tai'an Detu Automation Instrument Co., Ltd. is based in Tai'an High-Tech Development Zone, Tai'an, Shandong, 271000, China. The supplier holds a harbor trust tier classification. No response rate or average response time data is available in the listing, so buyers should initiate contact early and allow time for follow-up, particularly for technical enquiries about furnace configuration and customisation options.

The company profile does not state year of establishment, factory floor area, employee count, annual revenue, or named clients. The listing emphasises non-standard customisation services and mentions that furnace opening sizes can be tailored. Buyers should request a business licence, any metrology equipment manufacturing permits, and evidence of compliance with Chinese national metrology regulations before committing to purchase. The ability to customise implies engineering capability, but buyers should verify this through reference visits or third-party audit if the order value justifies it.