800L Programmable Constant Temperature and Humidity Tester
1.Introduction:
Test material heat, cold, dry resistance, humidity resistance.Suitable for electronics, electrical appliances,Communications, instrumentation, vehicles, plastic products, metal, food, chemical,building materials, medical, aerospaceand other products.
2.Specification:
3.Advantage
Ø 24 hours online
Ø 35 years experiences
Ø Sample chamber of each model
Ø Best price, fast delivery
Ø OEM,ODM
Ø Oversea offices
Ø Own import and export business license
Ø ISO,CE,UL,ASTM,DIN,EN,GB,BS,JIS,ANSI,TAPPI,AATCC,IEC,VDE
4.Customer Support Services
Ø Installation
Ø Training (Training customer employees)
Ø Calibration
Ø Preventative maintenance
Ø Replacement parts
Ø Assistance via phone or internet
Ø On-site diagnosis and repair/online diagnosis and repair
5.Use
Ø Test material heat,cold,dry and humidity resistance.
Ø Suitable for electronics,electrical appliances,communications,instrumentation,vehicles,plastic products and metal parts.
Ø Suitable for food,chemical,pharmacy,medical,building materials,aerospace and other products.
6.FAQ
How do test chambers get so cold?
What are the limitations of temperature humidity chambers in achieving low temperature?
When we hear from folks searching for a test chamber for the first time, they are sometimes surprised that we can get temperatures down to -94° Fahrenheit (-70° Celsius). To help you understand the different methods of cooling a chamber and how cold they can go, take a look below:
20°C above ambient
This lower limit is common for temperature humidity chambers that don't have any refrigeration. Because there is heat generated by the fan recirculating the air, we cannot guarantee temperatures close to the room ambient. So even if you just want a stable "ambient" temperature, you will need refrigeration. This low temperature is usually specified for ovens.
5 to -20°C
This is about as low as we can go with a standard refrigeration using R-134A refrigerant. This is the same refrigerant that is currently used in new air conditioning systems and refrigerators. This refrigerant is not widely used in the test chamber industry due to its limited range. To learn more about refrigeration, see this webpage.
-35 to -40°C
This is the lowest range that chambers can achieve with R-404A or R-507 refrigerants. The type of refrigeration system they use is called "single stage", which basically means that there is one compressor. Chambers with this range are often only used to -20 or -25°C when cycling temperatures between hot and cold. Going to lower temperatures becomes a slow process. Higher performance systems may even limit the lower temperature more strictly in order to maximize the system to meet a desired test range in a specified time.
-65 to -73°C
Temperature humidity chambers that can get this low use "cascade" refrigeration. By using a "high stage" refrigeration circuit to cool the "low stage" circuit, these cold temperatures can be achieved. The low stage refrigerants (R-23 or R-508) would create too much pressure (which would blow-out the piping) if they were used alone, which is why the high stage is added. The high stage ensures the low stage doesnt' reach too high a pressure by cooling it.
How humidity control works
"Is it possible to produce temperature humidity chambers with humidity control but no temp. control?" Can you control only humidity? Not with any accuracy or repeatability. If you just want to get as dry or humid as possible, then skipping temperature control is acceptable. But you still need to measure temperature to calculate relative humidity. Relative humidity is actually relative to the temperature. The higher the temperature, the more moisture the air can hold at a given temperature. Relative humidity is the ratio of the amount of moisture in the air vs. how much it can hold. And herein lies the best reason to have temperature control: If the temperature changes, the relative humidity changes. So a stable temperature helps ensure a stable humidity level.
7.Contact informations
Contact person:Suki Qiu
Please send me your request and details,our team will give you the best suggestion and price,waiting for your inquiry!
1.Introduction:
Test material heat, cold, dry resistance, humidity resistance.Suitable for electronics, electrical appliances,Communications, instrumentation, vehicles, plastic products, metal, food, chemical,building materials, medical, aerospaceand other products.
2.Specification:
| XB-OTS-80 | XB-OTS-150 | XB-OTS-225 | XB-OTS-408 | XB-OTS-800 | XB-OTS-1000 | |
| Inner size W*H*DCM | 40*50*40 | 50*60*50 | 50*75*60 | 60*85*80 | 100*100*800 | 100*100*100 |
| External size W*H*DCM | 90*143*100 | 100*153*110 | 110*168*110 | 130*178*120 | 150*193*140 | 150*193*160 |
| Temperature range | -70°C~+150°C(180°C) (A:-20°C B:-40°C C:-60°C D:-70°C ) | |||||
| Humidity range | 20%~98%R.H.(10%-98%R.H/5%~98%R.H) | |||||
| Temp humidity analytic accuracy / uniformity | ±0.1°C;±0.1%R.H./ ±1.0°C;±3.0%R.H.is special optional condition. | |||||
| Temperature humidity control accuracy/fluctuation | ±1.0°C;±2.0%R.H./ ±0.5°C;±2.0%R.H. | |||||
| Heat/cooling time | About 5.0°C/min;about 1.2°C/min (5~10°C/min is a special optional condition | |||||
| Inner and outer materials | SUS#304 Stainless steel for inner chamber and Carton Advanced cold plate nano paint for outer. | |||||
| Insulation materials | Resistant to high temp ,high density,formate chlorine,ethyl acetum foam insulation materials | |||||
| Cooling system | Air cooling/single segment compressor(-20°C) ,air and water double segment compressor (-40°C~-70°C) | |||||
| Protection devices | Fuse switch, compressor overload switch, refrigerant high and low pressure protection switch, super humidity over-temperature protection switch, fuse, failure warning system | |||||
| Parts | Watching window,50mm testing hole,PL internal bulbs,partition plate,dry and wet ball gauze | |||||
| Controller | TEMI" South Korea"TEMI" "OYO" Japan's "OYO" Brand optional | |||||
| Compressor | Original France"Tecumseh"brand | |||||
| Power | 1Φ 220VAC±10% 50/60Hz & 3Φ 380VAC±10% 50/60Hz | |||||
3.Advantage
Ø 24 hours online
Ø 35 years experiences
Ø Sample chamber of each model
Ø Best price, fast delivery
Ø OEM,ODM
Ø Oversea offices
Ø Own import and export business license
Ø ISO,CE,UL,ASTM,DIN,EN,GB,BS,JIS,ANSI,TAPPI,AATCC,IEC,VDE
4.Customer Support Services
Ø Installation
Ø Training (Training customer employees)
Ø Calibration
Ø Preventative maintenance
Ø Replacement parts
Ø Assistance via phone or internet
Ø On-site diagnosis and repair/online diagnosis and repair
5.Use
Ø Test material heat,cold,dry and humidity resistance.
Ø Suitable for electronics,electrical appliances,communications,instrumentation,vehicles,plastic products and metal parts.
Ø Suitable for food,chemical,pharmacy,medical,building materials,aerospace and other products.
6.FAQ
How do test chambers get so cold?
What are the limitations of temperature humidity chambers in achieving low temperature?
When we hear from folks searching for a test chamber for the first time, they are sometimes surprised that we can get temperatures down to -94° Fahrenheit (-70° Celsius). To help you understand the different methods of cooling a chamber and how cold they can go, take a look below:
20°C above ambient
This lower limit is common for temperature humidity chambers that don't have any refrigeration. Because there is heat generated by the fan recirculating the air, we cannot guarantee temperatures close to the room ambient. So even if you just want a stable "ambient" temperature, you will need refrigeration. This low temperature is usually specified for ovens.
5 to -20°C
This is about as low as we can go with a standard refrigeration using R-134A refrigerant. This is the same refrigerant that is currently used in new air conditioning systems and refrigerators. This refrigerant is not widely used in the test chamber industry due to its limited range. To learn more about refrigeration, see this webpage.
-35 to -40°C
This is the lowest range that chambers can achieve with R-404A or R-507 refrigerants. The type of refrigeration system they use is called "single stage", which basically means that there is one compressor. Chambers with this range are often only used to -20 or -25°C when cycling temperatures between hot and cold. Going to lower temperatures becomes a slow process. Higher performance systems may even limit the lower temperature more strictly in order to maximize the system to meet a desired test range in a specified time.
-65 to -73°C
Temperature humidity chambers that can get this low use "cascade" refrigeration. By using a "high stage" refrigeration circuit to cool the "low stage" circuit, these cold temperatures can be achieved. The low stage refrigerants (R-23 or R-508) would create too much pressure (which would blow-out the piping) if they were used alone, which is why the high stage is added. The high stage ensures the low stage doesnt' reach too high a pressure by cooling it.
How humidity control works
"Is it possible to produce temperature humidity chambers with humidity control but no temp. control?" Can you control only humidity? Not with any accuracy or repeatability. If you just want to get as dry or humid as possible, then skipping temperature control is acceptable. But you still need to measure temperature to calculate relative humidity. Relative humidity is actually relative to the temperature. The higher the temperature, the more moisture the air can hold at a given temperature. Relative humidity is the ratio of the amount of moisture in the air vs. how much it can hold. And herein lies the best reason to have temperature control: If the temperature changes, the relative humidity changes. So a stable temperature helps ensure a stable humidity level.
7.Contact informations
Contact person:Suki Qiu
Please send me your request and details,our team will give you the best suggestion and price,waiting for your inquiry!