Specifications

Smart Refrigerator and
Dehumidifier System with PID
control
(Patent pending)
The J Series switches between large and
small refrigerators, depending on the
chamber capacity and the temperature and
humidity range; it also handles precisely
various heat loads by using a multi-
compressor system that manage a main
and a sub-circuit.
From the first Platinous Series sold in 1961,
we have been strongly committed to response
and accuracy in the control of temperature
and humidity (air-conditioning system), by
adopting our own unique systems.
In this series, we made further improvements
of our control system by focusing on energy
savings more than ever.
One of these enhanced features is the PID
control of refrigeration capacity. The Smart
Refrigerator & Dehumidifier System can
control minutely both heating and cooling
at minimal levels, thanks to the new
N-instrumentation embedded in the
chamber. PID control applies to both main
and sub refrigeration circuits.
Increased reliability of the
refrigeration circuit
We have installed an injection circuit for
compressor cooling. A heater exchanger
is also installed in the refrigeration system
and the compressor is protected from
refrigerant accidentally flooding back.
Energy savings and high performance achieved thanks to
the refrigeration system
Characteristics
Energy savings
Energy savings principle diagram
Heater output
Refrigeration
output
Heating/
humidifying
Heating PID control
N-Instrumentation
Refrigeration
PID control
N-Instrumentation
Test area
stabilization
point
Cooling/
dehumidify-
ing
K Series J Series
K Series (PL - AC inverter spec.)
Power consumption comparison
(example)
Power consumption comparison when equipped
with the DC inverter energy saving system
Operating conditions
• Temperature control
• Temperature & humidity control
+60°C
PL-3
PR-3
PU-3
PL-3
PR-3
PU-3
+20°C
Operating conditions
Power consumption (kWh)
Power consumption (kWh)
1.000.50
1.50
2.00 2.50
Operating conditions
0°C
–10°C
–20°C
Power consumption (kWh)
1.000.50
1.50
2.00 2.50
1.000.50
1.50
2.00 2.50
PL-3
PR-3
PL-3
PU-3
+85°C/
85%rh
PL-3
PR-3
+20°C/
40%rh
J Series
K Series
J Series
K Series
Energy
savings rate
66% max.
Energy
savings rate
70% max.
Energy
savings rate
48% max
Chamber equipped with shelves (option)
8