Specifications

ULTRA LOW TEMPERATURE & HUMIDITY CHAMBER
PSL
−70 to ＋100℃（+150℃／＋180℃）・20 to 98％rh
Model PSL-2J PSL-4J
System Balanced Temperature and Humidity Control system (BTHC system)
Performance*
1
Temp. & humidity range
−70 to +100°C/20 to 98% rh
(lowest attainable temperature in an ambient temperature of 0 to +30°C)
Refer to diagram of temperature & humidity controllable range on page 26.
Temp. & humidity fluctuation ±0.3°C/±2.5% rh
Temperature gradient 3.0°C
Temperature variation in space 1.5°C
Temperature rate of change
Heat up rate: 5.0°C/min.
Pull down rate: 2.0°C/min.
Heat up rate: 5.0°C/min.
Pull down rate: 1.0°C/min.
Temperature extremes
achievement time
Heat up time: from +20 to +100°C 30 min.
Pull down time: from +20 to −70°C 65 min.
Allowable heat load*
2
700 W 2200 W
Construction
Exterior material Stainless steel plate: 18 Cr stainless steel plate, hairline finish
Test area material Stainless steel plate: 18−8 Cr−Ni stainless steel plate, 2B polish
Heater Nichrome strip wire heater
Humidifier 18−12−2.5 Cr−Ni−Mo stainless steel sheathed heater (surface evaporating system)
Cooler (dehumidifier) Plate fin cooler (Doubles as dehumidifier), stainless steel tube cooler
Air circulator Cross flow fan Sirocco fan
Water
supply
Supply system Pump out system
Water tank 16 L 32 L
Refrig-
eration
unit
System Mechanical cascade refrigerator system
Compressor
Rotary compressor (R404A, R508A)
Reciprocating compressor (R404A)
Scroll compressor (R404A, R508A)
Reciprocating compressor (R404A)
Refrigerator capacity 1.5 kW x 1.5 kw + 0.4 kW 3.0 kW x 3.0 kW + 0.4 kW
Expansion mechanism Electronic expansion valve, capillary tube
Capacity 306 L 800 L
Chamber total load resistance 100 kg
Dimensions*
3
Inside dimensions
(W x H x D mm)
600 x 850 x 600 1000 x 1000 x 800
Outside dimensions
(W x H x D mm)
1010 x 1690 x 1273 1410 x 1853 (1983) x 1593
Weight 470 kg 705 kg
Utility requirements
Allowable ambient conditions 0 to +40°C/up to 75% rh
Power
supply
200V AC 3ø 50/60 Hz 32.0 A 48.5 A
220V AC 3ø 60 Hz*
4
30.5 A 45.5 A
380V AC 3ø 50 Hz*
4
18.0 A 30.0 A
400V AC 3ø 50 Hz*
4
17.1 A 29.4 A
*1 The performance values are based on IEC60068-3-5:2001 and IEC60068-3-6:2001;
Performance figures are given for a +23°C ambient temperature, relative humidity of 65±20%rh, rated voltage, and no specimen inside the test area.
*2 When temperature in chamber is +20°C
*3 Excluding protrusions. Dimension indicated in ( ) includes protrusion.
*4 Compliance with CE Marking
20