Specifications

LOW TEMPERATURE CHAMBER
PU
−40 to ＋100℃（+150℃／＋180℃）
Model PU−1J PU−2J PU−3J PU−4J
System Balanced Temperature Control system (BTC system)
Performance*
1
Temperature range −40 to +100°C (lowest attainable temperature in an ambient temperature of 0 to +30°C)
Temperature fluctuation ±0.3°C
Temperature 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.
Temperature extremes
achievement time
Heat up time: from +20 to +100°C 30 min.
Pull down time: from +20 to −40°C 45 min.
Allowable heat load*
2
850 W 1400 W 1500 W 2850 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
Cooler (dehumidifier) Plate fin cooler Plate fin cooler, stainless steel tube cooler
Air circulator Cross flow fan Sirocco fan
Refrig-
eration
unit
System Mechanical type single-stage compression cooling
Compressor
Rotary compressor
(R404A)
Rotary compressor (R404A)
Reciprocating compressor (R404A)
Scroll compressor
(R404A)
Reciprocating compressor
(R404A)
Refrigerator capacity 1.2 kW 1.5 kW + 0.4 kW 3.0 kW + 0.4 kW
Expansion mechanism
Electronic expansion
valve
Electronic expansion valve, capillary tube
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 330 kg 410 kg 600 kg
Utility requirements
Allowable ambient conditions 0 to +40°C/up to 75% rh
Power
supply
200V AC 3ø 50/60 Hz 14.5 A 15.0 A 28.0 A
220V AC 3ø 60 Hz*
4
14.0 A 14.0 A 26.5 A
380V AC 3ø 50 Hz*
4
9.0 A 10.5 A 13.5 A
400V AC 3ø 50 Hz*
4
8.5 A 10.0 A 12.8 A
*1 The performance values are based on IEC60068-3-5:2001 under the conditions of 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
24