（China）YYS-250 Constant Temperature&Humidity Chamber(-40℃)
I.Summary:
| Instruments Name | Programmable constant temperature & humidity test chamber | |||
| Model No: | YYS-250 | |||
| Internal studio dimensions(W*H*D) | 460*720*720mm | |||
| Overall dimension(W*H*D) | 1100*1900*1300mm | |||
| Instruments structure | Single-chamber vertical | |||
| Technical parameter | Temperature range | -40℃～+150℃ | ||
| Single stage refrigeration | ||||
| Temperature fluctuation | ≤±0.5℃ | |||
| Temperature uniformity | ≤2℃ | |||
| Cooling rate | 0.7～1℃/min（average） | |||
| Heating rate | 3～5℃/min（average） | |||
| Humidity range | 20%-98%RH（Meet the double 85 test） | |||
| Humidity uniformity | ≤±2.0%R.H | |||
| Humidity fluctuation | +2-3%RH | |||
| Temperature and humidity correspondenceCurve diagram |  |
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| Material quality | Outer chamber material | Electrostatic spray for cold rolled steel | ||
| Interior material | SUS304 Stainless steel | |||
| Thermal insulation material | Ultra fine glass insulation cotton 100mm | |||
| Heating system | heater | Stainless steel 316L finned heat dissipating heat pipe electric heater | ||
| Control mode: PID control mode, using non-contact and other periodic pulse broadening SSR (solid state relay) | ||||
| Controller | Basic information | TEMI-580 True Color Touch programmable Temperature and Humidity controller | ||
| Program control 30 groups of 100 segments (the number of segments can be arbitrarily adjusted and allocated to each group) | ||||
| Mode of operation | Set value/program | |||
| Setting mode | Manual input/remote input | |||
| Set range | Temperature: -199℃ ~ +200℃ | |||
| Time: 0 ~ 9999 hours/minute/second | ||||
| Resolution ratio | Temperature: 0.01℃ | |||
| Humidity: 0.01% | ||||
| Time: 0.1S | ||||
| Input | PT100 platinum resistor | |||
| Accessory function | Alarm display function (prompt fault cause) | |||
| Upper and lower limit temperature alarm function | ||||
| Timing function, self-diagnosis function. | ||||
| Measurement data acquisition | PT100 platinum resistor | |||
| Component configuration | Refrigeration system | compressor | French original “Taikang” fully enclosed compressor unit | |
| Refrigeration mode | Single stage refrigeration | |||
| Refrigerant | Environmental protection R-404A | |||
| Filter | AIGLE (USA) | |||
| condenser | “POSEL” brand | |||
| Evaporator | ||||
| Expansion valve | Original Danfoss (Denmark) | |||
| Air supply circulation system | Stainless steel fan to achieve forced circulation of air | |||
| Sino-foreign joint venture “Heng Yi” differential motor | ||||
| Multi-wing wind wheel | ||||
| The air supply system is single circulation | ||||
| Window light | Philips | |||
| Other configuration | Stainless Steel Removable Sample Holder 1 layer | |||
| Test cable outlet Φ50mm hole 1 pcs | ||||
| Hollow conducting electric heating defrosting function glass observation window and lamp | ||||
| Bottom corner universal wheel | ||||
| Security protection | Leakage protection | |||
| “Rainbow”(Korea) overtemperature alarm protector | ||||
| Fast fuse | ||||
| Compressor high and low pressure protection, overheating, overcurrent protection | ||||
| Line fuses and fully sheathed terminals | ||||
| Production standard | GB/2423.1 ；GB/2423.2； GB/2423.3；GB/2423.4;IEC 60068-2-1; BS EN 60068-3-6 | |||
| Delivery Time | 30 days after the payment arrived | |||
| Use environment | Temperature: 5℃ ~ 35℃, relative humidity: ≤85%RH | |||
| Site | 1.Ground level, good ventilation, free of flammable, explosive, corrosive gas and dust2.There’s no source of strong electromagnetic radiation nearbyLeave proper maintenance space around the device | |||
| After-sales service | 1.Equipment warranty period of one year, lifetime maintenance.One year warranty from the date of delivery (except for the damage caused by natural disasters, power anomalies, human improper use and improper maintenance, the company is completely free of charge).For services beyond the warranty period, a corresponding cost fee will be charged.2.In the use of equipment in the process of the problem to respond within 24 hours, and timely assign maintenance engineers, technical personnel to deal with the problem. | |||
| When the supplier’s equipment breaks down after the warranty period, the supplier shall provide paid service.(Fee applicable) | ||||
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