Specifications

TEMPERATURE & HUMIDITY CHAMBER
PR
−20 to ＋100℃（+150℃／＋180℃）・20 to 98％rh
Model PR−1J PR−2J PR−3J PR−4J
System Balanced Temperature and Humidity Control system (BTHC system)
Performance*
1
Temp. & humidity range
−20 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
Temp. gradient 3.0°C
Temperature variation in space 1.5°C
Temperature rate of change
Heat up rate: 3.0°C/min.
Pull down rate: 2.0°C/min.
Heat up rate: 3.0°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 −20°C 40 min.
Allowable heat load*
2
800 W 1100 W 1250 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
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 type single-stage compression cooling
Compressor Rotary compressor (R404A)
Refrigerator capacity 0.65 kW 1.2 kW
Expansion mechanism Electronic expansion valve
Capacity 120 L 225 L 408 L 800 L
Chamber total load resistance 100 kg
Dimensions*
3
Inside dimensions
(W x H x D mm)
500 x 600 x 400 500 x 750 x 600 600 x 850 x 800 1000 x 1000 x 800
Outside dimensions
(W x H x D mm)
910 x 1440 x 873 910 x 1590 x 1073 1010 x 1690 x 1273
1410 x 1840 (1970)
x 1273
Weight 260 kg 305 kg 365 kg 480 kg
Utility requirements
Allowable ambient conditions 0 to +40°C/up to 75% rh
Power
supply
200V AC 3ø 50/60 Hz 18.5 A 20.0 A 22.0 A 34.0 A
220V AC 3ø 60 Hz*
4
17.5 A 20.0 A 20.5 A 31.5 A
380V AC 3ø 50 Hz*
4
8.5 A 10.0 A 10.0 A 19.5 A
400V AC 3ø 50 Hz*
4
8.0 A 9.5 A 9.5 A 19.0 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
18