Thank you for your attention to our constant temperature and humidity box! 
 Bell Equipment Co., Ltd. is committed to constant temperature and humidity box, temperature and humidity room, walk-in constant temperature and humidity room, high and low temperature test chamber, the aging housing development and production, is the chief research and development, production and sales of specialized test Equipment Co., Ltd., we are willing to work with you to create high-quality products! 
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 First, use: constant temperature and humidity, also known as environmental testing machine, test a variety of materials, heat, cold, resistance to dry and wet performance. Suitable for electronic, electrical, food, vehicles, metals, chemicals, building materials factory use. 
 Second, the standard: constant temperature and humidity can meet the following criteria: GB2423.1-89 Test Method for low temperature, GB2423.2-89 high-temperature test method, GB2423-93 test D6 Damp heat test method, IEC68-2-30 test method. 
 Third, the control and features: balanced thermostat humidity control system (BTHC), the PID control the SSR, so that heated humidification system is equal to the amount of heat and moisture loss, so the use of long-term stability. 
 Main technical parameters: 
 01. Model: BE-TH-80L.100L.120L.150L.225L.408L.800L.1000L (MH) 
 02. Internal Dimensions 80L (40X50X40) .100 L (40X50X50) .120 L (40X50X60). 
 150L (50X60X50) 225L (50X75X60) .408 L (60X85X80). 
 800L (100X100X80) .1000 L (100X100X100) cm 
 03. Within the box material: mirror or matte stainless steel plate (SUS # 304 1.0mm thick) 
 04. Outside the box Material: stainless steel plate (SUS # 304 1.0mm thick) or cold-rolled steel, paint handling 
 05. Insulation material: Polyurethane foam and glass wool rigid 
 06. Temperature range: 
 H said -20 ℃ ~ +150 ℃ 
 M said -40 ℃ ~ +150 ℃ 
 L said -70 ℃ ~ +150 ℃ 
 07. Temperature Fluctuation: ± 0.5 ℃ 
 08. Temperature deviation: ≤ ± 2 ℃ 
 09. Temperature lower limit: 
 H said -20 ℃ 
 M said -40 ℃ 
 L said -70 ℃ 
 10. Heating time: an average of 3 ℃ / min (linear no-load) 
 11. Cooling time: an average of 1 ℃ / min (linear no-load) 
 12. Humidity: 20% ~ 98% RH are available upon request made to the 10-98% RH 
 13. Humidity volatility: ± 2.0% RH 
 14. Humidity deviation: ≤ ± 3% 
 15. Compressors: French Taikang imported whole compressor close 
 16. Refrigerant: environmentally friendly refrigerant R404A