Purpose
Serve for environmental protection, hygiene and anti-epidemic, pharmaceutical test, workstock and aquatic products etc. Which applied in scientific research institute, college and manufacture department. It is a dedicated constant-temperature equipment for analysis of water body,  cultivation and storage of bacteria, moulds and microorganisms, plant cultivation and seed-breeding test.
Feature
1.Working chamber is made of high quality corrosion-resistant stainless steel. The shell is made of high quality steel plate, surface processing with static spraying plastic.Dual-layer toughened glass observation window. The shelf is made of stainless steel, and can be adjustable. It is easy and convenient to use. With a beautiful and novel appearance.
2.The compressors with over-pressure and under-pressure proteced device. Intelligent refrigeration without frost. Have self-checking on-and-off control programme, low noise, long life, low temperature fluctuation.
3.Omnidirectional tridimensional heating technolgy, assure temperature within the working chamber even. With independently-controlled light inside to observe the objects.
4.Reasonable designed air channel structure, breeze airflow circulating designed, to assure the temperature within the working chamber even.
5.Imported humidity sensor and advanced humidification technology. Humidity control accuracy, quick speed humidification, humidity even.
6.Second grade saved automatic input water, alarm function when lack of water.
7.Temperature controllor adopt high speed, high performance CPU handling chip. High sensitive, high precision platinum resistance sensor. Have fixed programme control function of “Resume By Alarm”, “ Close By Alarm”, “Working By Alarm”. Timing time is 0-99Hours.
8.Temperature controllor is with sensor malfunction alarm, low/high temperature deviation alarm. Over-temperature alarm. Parameters memory. Temperature display emendation. Self-diagnosing dynamic control technology.
9.Temperature controllor and humidity controllor connected for operation, advanced dynamic control technology make the temperture and humidity best status.
10.Independent alarm system for temperature-limiting ensures experiments run safety and no accident would happen. (Option)
Specification 

Model		HWS-150	HWS-250
Chamber volume(L)		150	250
Environmental condition		Temperature 5～30℃
		Maximum relative humidity 80%
		Altitude up to 2000m
Power		AC220V,50Hz
Range		5℃～50℃
Temperature	Accuracy	±0.1℃ at 37℃
	Fluctuation	±0.5℃
	Uniformity	±0.3℃ at 37℃	±0.5℃ at37 ℃
	Controller	The PID microprocessor controls, touch type, numeral manifestation
	Sensor	Platinum gold resistor PT100
Timer		Wait on time,wait off time(Max.99hr,Min.1min)
Humidity range		50%-90%
Humidity	Accuracy	±0.1%RH
	Fluctuation	±3%RH
	Controller	PID microprocessor controls, touch type, numeral manifestation
	Sensor	Capacitor type
Material	Internal	304 Mirror finished stainless steels
	External	Iron 08F
Dimension     (mm)	Internal	500×400×750	550×500×900
	External	600×610×1500	650×710×1650
Net weight		94KG	119KG
Consumption power		500W	750W
Shelf dimension		446×380	496×480
Shelve(Supply/most)		2/10	2/13

From the very beginning, Shanghai Sumsung established on the basis of the product concept as “professional, advanced, practical and reliable". On the strength of accumulated technology, devotional research and perfection pursuit of many years, we developed a programmable, stable and reliable temperature (humidity) controller of international advanced level, then applying on which, produced electrothermal thermostat blast drying oven, electrothermal vacuum drying chamber, electrothermal thermostat incubator, watertight thermostat incubator, biochemical incubator, temperature humidity chamber, mould incubator, electrothermal thermostatic water-bath etc.