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-20°C~200°C high and low temperature all-in-one machine
- Product Description
-
First, let's introduce the function and application scenarios of the integrated high- and low-temperature unit
The high- and low-temperature circulation device is also known as the “integrated high- and low-temperature unit,” “integrated cold-and-hot unit,” or “heating and cooling circulator.”
When the temperature of glass reactors, reactors, rotary evaporators, extraction equipment, and other devices paired with the high- and low-temperature integrated unit needs to be rapidly increased or decreased, this device can quickly bring them to the set temperature. The device can switch between heating and cooling modes swiftly, and it uses the same medium—thermal oil—for both processes, completely overcoming the previous drawback of requiring two separate instruments for heating and cooling. The entire liquid circulation system of the high- and low-temperature circulating unit is sealed and equipped with an expansion tank. The expansion tank and the liquid circulation system are thermally insulated and do not participate in the liquid circulation; they are merely mechanically connected. Regardless of whether the liquid circulation operates at high or low temperatures, the medium in the expansion tank remains below 60 degrees.
Product model: PLYY-20-20
Temperature control range: -20–200℃
Typical applications of refrigeration and heating temperature control systems
Dynamic constant-temperature control of high-pressure reactor cooling and heating sources, dynamic constant-temperature control of double-layer glass reactor cooling and heating sources, constant-temperature control of cooling and heating sources for microchannel reactors, small-scale constant-temperature control systems, temperature control for steam saturation systems, low- and high-temperature aging tests for materials, combined chemical cooling and heating source constant-temperature control, cooling and heating for semiconductor equipment, and constant-temperature control for refrigeration and heating in vacuum chambers.
-20℃～200℃ Integrated High- and Low-Temperature Unit - Technical Parameters
Model
PLYY-20-20
PLYY-20-30
PLYY-20-50
PLYY-20-100
PLYY-20-150
PLYY-20-200
Temperature Range
-20℃～200℃
Control System
PID Adaptive Control Algorithm, PLC Programmable Controller
Temperature Control Mode
Material Temperature Control and Equipment Outlet Temperature Control Modes—Freely Selectable
Program Editing
PLC control allows programming of 5 programs, each program can be configured with up to 40 steps
Communication Protocol
MODBUS RTU Protocol, RS485 Interface
External Temperature Feedback
PT100 or 4–20mA or communication-based setpoint (PT100 by default)
Temperature Feedback
Three-point temperature measurement: inlet temperature of the device's heat transfer medium, outlet temperature, and reactor material temperature (using external temperature sensors)
Thermal fluid temperature control accuracy
±0.5℃
Material temperature control accuracy
±1℃
Heating power kW
2.5
3.5
5.5
7.5
10
15
Heating
Cooling
Capacity
kW200℃
2.5
3.5
5.5
7.5
10
15
100℃
2.5
3.5
5.5
7.5
10
15
50℃
2.5
3.5
5.5
7.5
10
15
20℃
2.5
3.5
5.5
7.5
10
15
-5℃
2
3
4.5
6.6
8
12
-20℃
1
1.8
2.8
3.8
4.6
7
circulating pump
flow pressure Max20L/min
2bar35L/min
2bar35L/min
2bar50L/min
2bar75L/min
2.5bar110L/min
2.5barCompressor
Compressors from brands such as Emerson Copeland, Tecumseh, and Dooling
Expansion valve
Danfoss/Emerson thermal expansion valves
Evaporator
Plate heat exchanger
Control panel
PLC-controlled 7-inch color touch screen, with temperature curve display and recording
Safety Protection
Features self-diagnosis capability; compressor overload protection; high-pressure pressure switch, overload relay, thermal protection device, and other multiple safety protection functions.
Enclosed system
The entire system is fully enclosed; at high temperatures, it produces no oil mist, and at low temperatures, it does not absorb moisture from the air. During operation, the system’s pressure does not rise due to high temperatures, and at low temperatures, the heat transfer medium is automatically replenished.
Refrigerant
R-404A
Power Supply
380V 50HZ / 460V 60HZ
Enclosure Material
Cold-rolled steel with plastic coating or SUS304 enclosure
Optional
Explosion-proof models ExdIIBT4/ ExdIICT4
Application Industries
1. Pharmaceutical: Processes requiring temperature control, such as synthesis, hydrolysis, esterification, and etherification.
2. Chemical Industry: Distillation and purification, rubber crushing, cryogenic grinding, and chemical synthesis.
3. Metal Processing: Cryogenic assembly, cryogenic quenching.
4. Food: Processing and storage of ultra-low-temperature foods such as tuna.
5. Semiconductor electronics: Environmental testing of components, simulated testing of electronic devices.
6. Aerospace: Thermal sink experiments, environmental simulation tests for components, evaporative cooling environment simulation tests.
The working principle of a combined high- and low-temperature unit
High- and Low-Temperature Integrated Unit – Detailed Images of Some Components
Control System Display Screen, Brand Compressor, Condensing Fan, Plate Heat Exchanger, Expansion Valve, Drying Filter, etc.
Diagram of the Integrated High- and Low-Temperature Cycling Machine
Product real-shot photos
Related Products
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