purpose：
programmable constant temperature & humidity test is designed for testing the capability of heat-endurance, cold-endurance, dryness-endurance, and humidity-endurance. it is suitable for the industries of electron, electrical equipment, vehicle, metal, chemistry, building materials, luggage, adhesion tape, printing, packaging, etc.
specification：
model： lk-2236a lk-2236b lk-2236c lk-2236d lk-2236e lk-2236f
interior dimension（w×h×d）cm： 40×50×40 50×60×50 60×75×60 60×85×80 100×100×80 100×100×100
exterior dimension（w×h×d）cm： 110×136×71 117×146×85 130×166×91 140×176×101 170×186×111 180×196×123
capacity（l）： 80 150 270 408 800 1000
heating up speed： -40℃～100℃ approx 45min
cooling down speed： 20℃～0℃ approx 20min, 20℃～-20℃ approx 45min, 20℃～-40℃ approx 60min, 20℃～-70℃ approx 90min
temp. range： 0℃、-20℃、-40℃、-70℃～150℃
temp. uniformity： ±1℃
humidity uniformity： ±2.5%
temp. stability： ±0.3℃
humidity stability： ±2.5%
humidity range： 20%～98%rh（available customized low humidity degree to 5%rh）
programmable mode： use high stability platinum temperature resistant materials, lcd chinese & english touch-screen, 120 sets 1200 sections program, 999 cycles circulation setting, and enclose multiple sets of pid control function and rs-232 computer connection interface control.
heating system： sus#304, stainless steel heater
humidification system： surface evaporative type, enclose protection of hydropenia, interrupt of power supply and superheat for humidifier.
dehumidification system： frozen & latent heat dehumidification method
cooling system： adopt unary type full-closed air-cool refrigeration system above -20℃, adopt binary type full-closed air-cool refrigeration system below -40℃
water supply system： circulating water supply system, together with hydropenia warning device
inner & outer material： sus#304, stainless steel of whole machine
insulation material： rockwool and rigid polyurethane foam insulation
safety device： breaker, compressor overload, ultra-temperature, power failure, temperature limit protection and fault alarm
temp. & humidity regulation： balance adjustment temperature & humidity method
standard accessories： automatic demist fogging glass window, 2 sets of adjustable upper and lower interlayer, cable prot, chamber lamp, wheels
optional accessories： grapher
power： ac220v/380v±10%，50/60hz