BS-408DD 408 L Programmable High and Low Temperat | RFQ Sourcing Details

The BS-408DD is a programmable high and low temperature test chamber designed for temperature-aging tests and environmental adaptability evaluations. Its 408 L working chamber supports testing under high-temperature, low-temperature, and alternating high/low-temperature conditions.

Listed fields include electrical and electronic products, automotive components, new-energy equipment, home appliances, semiconductors, instrumentation, aerospace products, and university laboratory work. Supported performance data The specified temperature range is -40°C to 150°C.

Under no-load conditions, with no test sample and an ambient temperature of 25±2°C, the listed full-process non-linear heating rate is at least 3°C per minute from -40°C to 150°C, while the cooling rate is at least 1°C per minute from 150°C to -40°C. Temperature display accuracy is 0.01°C.

The stated temperature deviation is ±2°C, fluctuation is no more than ±0.5°C, and uniformity is no more than 2°C. Listed operating noise is 70 dB when measured one metre from the chamber door at a height of 1.5 metres.

Chamber construction and access The internal chamber measures 800 × 850 × 600 mm (W × H × D) and is made from fully welded, 1.0 mm SUS 304 stainless steel. Its reinforced bottom is specified for an average load of at least 300 kg. Two adjustable stainless-steel shelf assemblies are included.

A 50 mm test port is positioned on the chamber’s left side and is supplied with a silicone plug and sealing cover. The cabinet has a single door with a double-layer silicone-rubber sealing strip. Its viewing window uses vacuum multilayer explosion-proof glass with heated anti-frost protection.

Interior lighting is installed above the window. Drainage troughs manage condensed water, while a pressure-balance opening equalizes internal and external pressure. Swivel casters assist with moving and positioning the equipment.

Temperature control and data handling Control is The controller can display set and actual values, program and segment numbers, remaining time, cycle count, operating time, and graphical curves. It supports rated-value, program, and slope operating modes.

The listed programming capacity is up to 120 program groups and 1,200 action steps, with an individual step duration of up to 9,999 hours and 59 minutes. Built-in recording memory is specified to store three months of continuous 24-hour operating data.

USB, RS485, and LAN connections support external computer control, storage, printing, and recording. Functions include sequence control, reservation control, power-off recovery, fault display, deviation correction, and multilevel password protection.

Air circulation, cooling, and heating The forced internal circulation arrangement uses top air supply and bottom air return. An adjustable air deflector distributes conditioned air through the chamber. Cooling is compressor-based and air-cooled, using a hermetic Tecumseh compressor and R404A refrigerant.

The heating system uses an SSR-driven stainless-steel finned nickel-chromium-wire heater with PID automatic adjustment.

The chamber includes protection for refrigeration-system high and low pressure, compressor overload, overcurrent and over-temperature, compressor oil shortage, fan overcurrent and over-temperature, phase loss, incorrect phase sequence, phase imbalance, leakage, enclosure grounding, and independent working-chamber over-temperature.

A three-color light indicates normal operation, standby status, or a fault alarm. Procurement questions to confirm Before ordering, confirm whether the required chamber configuration uses the stated front-back or lateral structure and obtain the final approved 3D drawing.

Verify available installation space, ventilation clearances, floor loading, power connection details, and local electrical compliance for the 380 V, 7.5 kW supply.

Buyers should also confirm the final controller configuration, sensor inputs, data-export format, included software, calibration documentation, test method, acceptance criteria under the intended payload, and whether the quoted performance remains applicable with the actual specimen and cable routing.

The evidence lists CE and ISO certification and several GB/T and GJB test or acceptance standards, but the precise certificate numbers, scope, issuing bodies, current validity, and standards included with the delivered unit should be checked.

Also confirm the final external dimensions, shipping dimensions and weight, included accessories, refrigerant servicing requirements, installation and commissioning scope, lead time, and the applicable warranty and after-sales terms because the provided terms are not fully consistent.