Laboratory Chiller SUNDI -70℃ ～ 250℃

-70℃～250℃
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.

Microchannel reactor thermostatic control, small temperature control system, steam - feeding system temperature control, material low temperature aging test.
The thermostatic control of the combined chemical cold source heat source, the cooling heating of the semiconductor equipment and the heating temperature of the vacuum chamber are controlled.

Advantages and functions of temperature control system of refrigeration

Temperature range from 120 to 350, performance superior, unique, high - precision, intelligent temperature control.
High cooling power from 0.5 to 1200kW, highest production stability and repeatable results.
Multi-function alarm system and safety function, use plate heat exchanger, tube type heater to increase heating and cooling rate.
7-inch and 10-inch color TFT touch screen graphics display, use magnetic drive pump, no re-seal leakage problem.
Full airtight system, extended thermal conductivity liquid life, very wide temperature range, no need to change liquid media.
Ultra-high temperature cooling technology can be cooled directly from 300 degrees of high temperature.
The principle and the function has many advantages to using staff: because only expansion of cavity in the body heat conduction medium contact with oxygen in the air (and expansion tank temperature at room temperature to 60 degrees), can achieve lower heat conduction medium absorbed by oxidation and the risk of air moisture.
No heat conduction medium evaporates at high temperature, and it can be achieved -80 ~ 190 degrees, -70 ~ 220 degrees, -88 ~ 170 degrees, -55 ~ 250 degrees, -30 ~ 300 degree continuous temperature control without pressurization.

Adopt full closed pipe design, adopt high efficiency plate heat exchanger, reduce the demand of heat conduction liquid, improve the heat utilization rate of the system, reach the rapid lifting temperature.Thermal conductive medium in a closed system, with a container, expand the heat-conducting medium not participate in circulation in the container, whether high or low temperatures, expansion tank temperature to room temperature to 60 degrees, can reduce the heat conduction medium in running the risk of absorb the moisture and volatile.

Application Area of Laboratory Chiller in the Vacuum Glove Box

The glove box (vacuum glove box) is a laboratory equipment that fills the box with high pure inert gas and circulates the active substance. It is a lso known as vacuum glove box, inert gas protection box, etc. The main function is the removal of O2, H2O and organic gas.

Vacuum glove box are widely applied to no water and no oxygen, dust-free ultrapure environment, such as lithium ion battery materials, semiconductor, super capacitor, special lights, laser welding, brazing, material synthesis, OLED, MOCVD, etc. It also includes biological applications such as anaerobic culture and cell hypoxia culture.

Our laboratory chiller SUNDI -70 ℃ ~ 250 ℃ is a universal precision cold water machine, with stainless steel piping system, high performance controller, multistage centrifugal pumps, and the built-in filter unit. It can meet various needs. Built-in multiple detection and alarm function can provide water flow alarm protection, water level alarm protection, overtemperature alarm protection. The RS485 serial interface and supporting equipment communication can be provided according to the user's needs, and can fully manage all the equipment of the chiller. The parallel interface can be provided, and the switching value of the alarm signal can be controlled by the switch signal.