Hirayama hast chambers has a good design like ESEPC hast test chambers. From ambient temperature to +120℃, 85%RH takes 70 minutes normally. Be sure to make the water tank with fully clean water during samples testing process. Regarding the Hirayama hast chambers’ exhaust mode, The 1st way is humidity maintenance with a natural way to cool down, The 2nd way is fast cooling mode but increase the humidity. The third method is rapid exhaust mode.
Regarding the terminals difference, There will be 20 terminals for each Hirayama hast test chamber. Up to 60 terminals can be expanded for PC-304R8 and PC-304R8D model, Up to 80 terminals can be expanded: PC-422R8 and PC-422R8D model. The PC-422R9 highly accelerated stress test chamber equip with 20 terminals. The front door of Hirayama hast chambers equip with motor drive, clamp tightening method.
The hirayama hast test chamber is suitable for reliability test of IC, PCB, LCD board, battery, capacitor, resistor and other electronic parts at high temperature, high humidity and high pressure. The same like ESPEC hast chambers, The main customers include electronic parts manufacturer, semiconductor photovoltaic, circuit board and other related users.

Model Description | PC-304R8 | PC-422R8 | PC-304R8D | PC-422R8D | PC-304R9 | PC-422R9 |
Outside Dimensions | W709 x D950 x H1674 mm | W709 x D950 x H1674 mm | W900 x D1100 x H1780 mm | W900 x D1100 x H1780 mm | W710 x D950 x H1620 mm | W710 x D950 x H1620 mm |
Test Volume | φ300 x D373 mm (26L) | φ420 x D485 mm (67L) | φ300 x D373 mm x 2 | φ420 x D485 mm x 2 | φ300 x D522 mm (34.5L) | φ420 x D657 mm (84.4L) |
Gross Weight | 260 KG | 280 KG | 475 KG | 475 KG | 260 KG | 280 KG |
Power Supply | AC 220, 50/60Hz | AC230, 50/60Hz | AC 220, 50/60Hz | AC230, 50/60Hz | AC 220, 50/60Hz | AC230, 50/60Hz |
Power Electricity | 2.5kW | 3.2kW | 2.5kW x 2 | 3.2kW x 2 | 2.3kW | 3.0kW |
Steam Generator | 1.7kW | 1.7kW | 1.7kW x 2 | 1.7kWx 2 | 1.5kW | 1.5kW |
Test Chamber | 0.6kW | 1.3kW | 0.6kW x 2 | 1.3kW x 2 | 0.6kW | 1.3kW |
Temperature Control | PID Control, SSD Drive | PID Control, SSD Drive | PID Control, SSD Drive | PID Control, SSD Drive | PID Control, SSD Drive | PID Control, SSD Drive |
Testing Mode | HUM: Unsaturated test mode/ STD: saturated test mode | HUM: Unsaturated test mode/ STD: saturated test mode | HUM: Unsaturated test mode/ STD: saturated test mode | HUM: Unsaturated test mode/ STD: saturated test mode | HUM: Unsaturated test mode/ STD: saturated test mode | HUM: Unsaturated test mode/ STD: saturated test mode |
Operation Mode | Fixed Value | Programmed Mode | Fixed Value | Programmed Mode | Fixed Value | Fixed Value |
Temperature Range | 105.0 ~ 151.4℃(at 100%RH) | 105.0 ~ 133.3℃(at 100%RH) | 105.0 ~ 151.4℃(at 100%RH) | 105.0 ~ 133.3℃(at 100%RH) | 105.0 ~ 151.4℃(at 100%RH) | 105.0 ~ 133.3℃(at 100%RH) |
110.0 ~ 157.5℃(at 85%RH) | 105.0 ~ 140.0℃(at 85%RH) | 110.0 ~ 157.5℃(at 85%RH) | 105.0 ~ 140.0℃(at 85%RH) | 110.0 ~ 157.5℃(at 85%RH) | 110.0 ~ 140.0℃(at 85%RH) | |
118.0 ~ 162.5℃(at 65%RH) | 118.0 ~ 150.0℃(at 65%RH) | 118.0 ~ 162.5℃(at 65%RH) | 118.0 ~ 150.0℃(at 65%RH) | 118.0 ~ 162.5℃(at 65%RH) | 118.0 ~ 150.0℃(at 65%RH) | |
Temperature Accuracy | ±0.5℃ | ±0.5℃ | ±0.5℃ | ±0.5℃ | ±0.5℃ | ±0.5℃ |
Distribution Accuracy | ±0.5℃(at 100%RH) | ±0.5℃(at 100%RH) | ±0.5℃(at 100%RH) | ±0.5℃(at 100%RH) | ±0.5℃(at 100%RH) | ±0.5℃(at 100%RH) |
±1.0℃(at 85%RH) | ±1.0℃(at 85%RH) | ±1.0℃(at 85%RH) | ±1.0℃(at 85%RH) | ±1.0℃(at 85%RH) | ±1.0℃(at 85%RH) | |
Humidity Range | 65 ~ 100%RH | 65 ~ 100%RH | 65 ~ 100%RH | 65 ~ 100%RH | 65 ~ 100%RH | 65 ~ 100%RH |
Humidity Accuracy | ±3%RH (at 85%RH) | ±3%RH (at 85%RH) | ±3%RH (at 85%RH) | ±3%RH (at 85%RH) | ±3%RH (at 85%RH) | ±3%RH (at 85%RH) |
Pressure Range | 0.019 ~ 0.393MPa | 0.019 ~ 0.208MPa | 0.019 ~ 0.393MPa | 0.019 ~ 0.208MPa | 0.019 ~ 0.393MPa | 0.019 ~ 0.208MPa |
Pressure Vessel | Small Sized (5L) | Small Sized (10L) | Small Sized (5L) | Small Sized (10L) | Small Sized (6L) | Small Sized (10L) |
Test Time | Continuous operation up to 500 hours | Continuous operation up to 500 hours | Continuous operation up to 500 hours | Continuous operation up to 500 hours | Continuous operation up to 500 hours | Continuous operation up to 500 hours |
Time Setting | 1 min – 999 hr 59 min | 1 min – 999 hr 59 min | 1 min – 999 hr 59 min | 1 min – 999 hr 59 min | 1 min – 999 hr 59 min | 1 min – 999 hr 59 min |
The hirayama hast chambers has two modes of unsaturated control and saturated control. Controlled by a slow buck, exhaust, and drainage system, Avoid the rapid change of pressure and temperature after the test, Keep the test results correct. Hirayama’s air hast equipment has colorful touch screen control panel. PC-422R8D Hirayama controller that can record 100 programs, The operation is simple and convenient, The phenomena of condensation, moisture and so on in the test samples were completely eliminated.
Standard model Hirayama hast chamber is equipped with 20 signal test terminals for test samples. The door of test room adopts push-button type, which locks automatically in the test, safe and reliable. Hirayama highly accelerated stress test chamber with automatic and manual water supply system. If you have the interest and trying to know more about Hirayama hast chambers models and technical parameters, Please inquiry to us !