Change the control settings of the method, the response as soon as possible in the process of the system lags behind be the smallest system overshoot. Controlled by two PID (PID is a variable in each group) control loop structure, known as the two sets of control loops: the main circuit and from the circuit, the main control loop from the loop output as the settings. The system with feedforward with PV, the master PID loop operation results of the PV output and feedforward signals as the composite of the settings from the control loop, through such control of the temperature gradient, to ensure the accuracy of temperature control system.
Model | SUNDI-725W |
SUNDI-735 SUNDI-735W |
SUNDI-755 SUNDI-755W |
SUNDI-775 SUNDI-775W |
SUNDI-7A10W | SUNDI-7A15W | |
Temp. range | -70℃~+250℃ | ||||||
Control Mode | Feedback PID + Our special dynamic control calculation, PLC controller | ||||||
Temp. control | Process temp. control and jacket temp. control model | ||||||
temp. difference | Set or control the temperature difference between jacket oil and raw material process | ||||||
Program Editor | 10 programs, each program can edit 42 steps. | ||||||
Communication Portocol | MODBUS RTU Protocol,RS485 interface | ||||||
Material temp. feedback | PT100 OR 4~20mA or communication(normal: PT100) | ||||||
Temp. feedback | The temp. of three points: the inlet and outlet of equipment, reactor material temp.(external temp. sensor) | ||||||
Medium temp. acccuracy | ±0.5℃ | ||||||
Material temp. accuracy | ±1℃ | ||||||
Heating power kW | 2.5 | 3.5 | 5.5 | 7.5 | 10 | 15 | |
Cooling capacity kW at |
250℃ | 2.5 | 3.5 | 5.5 | 7.5 | 10 | 15 |
100℃ | 2.5 | 3.5 | 5.5 | 7.5 | 10 | 15 | |
20℃ | 2.5 | 3.5 | 5.5 | 7.5 | 10 | 15 | |
-20℃ | 2 | 3 | 4.9 | 6 | 8.5 | 14 | |
-40℃ | 1.3 | 1.8 | 2.3 | 3.1 | 4 | 8.8 | |
-55℃ | 0.4 | 0.55 | 0.75 | 0.9 | 1.2 | 2.8 | |
Circulation pump max L/min bar |
20 | 35 | 50 | 50 | 110 | 110 | |
2 | 2 | 2 | 2 | 2.5 | 2.5 | ||
Pump | LNEYA magnetic drive pump | ||||||
Compressor | Tecumseh | Dorin | |||||
Expansion valve | Emerson thermal expansion valve/Emerson electronic expansion valve/danfoss thermal expansion valve. | ||||||
Evaporator | DANFOSS/KAORI Plate heat exchanger | ||||||
Operation Panel | 7-inch touch screen,show temp curve\EXCEL data output | ||||||
Safety protection | Self-diagnosis function; freezer overload protection; high pressure switch, overload relay,thermal protection device, liquid low level protection, high temperature protection and temperature fault protection. | ||||||
Closed circulation system | The whole system is full closed circulation, there is no oil mist at high temperature and no water vapor at low temperature, pressure do not rise up when system is running. The system will supply oil automatically at low temperature. | ||||||
Refrigerant | R404A/R23 mixture,optional: R125/R23 mixture | ||||||
Connection size | G1/2 | G3/4 | G3/4 | G1 | G1 | G1 | |
Water-cooled type W(@20℃) |
900L/H 1.5bar~4bar |
1200L/H 1.5bar~4bar |
1800L/H 1.5bar~4bar |
2300L/H 1.5bar~4bar |
3200L/H 1.5bar~4bar |
4500L/H 1.5bar~4bar |
|
Dimension(water type) cm | 45*85*130 | 45*85*130 | 55*95*170 | 55*95*170 | 70*100*175 | 80*120*185 | |
Dimension(air type) cm | / | 55*95*170 | 55*95*170 | 70*100*175 | / | / | |
Weight kg | 190 | 275 | 320 | 370 | 370 | 420 | |
Power 380V 50HZ | 220V 5.2kW | 8kW | 11kW | 15kW | 20kW | 28kW |
Typical application of refrigeration heating temperature control system
Dynamic thermostatic control of cold and heat source of high pressure reaction kettle, dynamic thermostatic control of double layer glass reaction kettle, and dynamic thermostatic control of cold and hot source of double-layer reactor.we will contact you within 24 hours.