One,Digital display refrigeration constant temperature water tankcharacteristic

HDThe series of low-temperature coolant circulation pumps is a combination of microprocessing technologyPIDThe low-temperature constant temperature water tank is composed of a high-precision thermostat controlled by a compressor refrigeration system. Its built-in refrigeration and heating systems can meet the different needs of users. The machine adopts microcomputer temperature control, with high temperature control accuracy. Due to the addition of a built-in circulation system, the temperature of the liquid inside the box is more uniform, the performance is stable and reliable, and the operation is simple. This machine is equipped with an external loop interface, and users can also output a constant temperature source externally. This sink is widely used in petroleum, chemical, metallurgical, pharmaceutical, biochemical, higher education institutions, research departments such as physical property testing and chemical analysis, factory experiments, and metrological quality inspection departments, providing users with a controlled hot and cold, uniform temperature field source for their work.

IIDigital display refrigeration constant temperature water tank​FEATURES
1、Advanced microcomputer intelligent control system: adoptingPIDTemperature control, with temperature setting and measurement capabilitiesDual digit display andPIDSelf regulating function, precise and reliable temperature control;Sensor:PT-100Platinum thermistor sensor. This system is implemented throughTouch soft key operation, easy to set and operate, temperature can be calibratedAccurate, the alarm has a signal display.
2、 Circulating system: a powerful jet pump circulation system,The circulation pump can be used for external circulation of constant temperature liquid medium, cooling or external experimental instruments of the constant temperature machine, and establishing a second constant temperature field.

3、 control systemComplete safety protection device: temperature runaway protection and alarm, if suddenly exceeds the constant temperature point during constant temperature control 2 ℃The above will display an alarm and automatically cut off the heating tube; Overcurrent protection function, if an overcurrent occurs suddenly during use, the fuse in the power socket will melt, protecting the safety of the instrument and the user.

3、 Operating instructions

1、 Firstly, add water or other medium to the sink, and the liquid level should be raised to the circular hole above the inner baffle (not lower than the workbench)30 mm）So that the heating and cooling tubes can be fully immersed in the liquid.

Selection of liquid medium:

A： Working temperature below5℃Alcohol is generally used as the liquid medium.

B： operation temperature5--80℃When it comes to liquid media, pure water is generally used.

C： operation temperature80--100℃When it comes to liquid media, liquid media are generally selected15%Glycerol aqueous solution.

2、 performConnection of circulating pump

A： The connection of the internal circulation pump can be achieved by connecting the outlet pipe and inlet pipe with a flexible hose(Randomly equip a hose).

B： Connect the external circulation pump to the external circulation system. Connect the outlet pipe to the inlet of the container outside the tank with a flexible hose, and connect the inlet pipe to the outlet of the container outside the tank(Note: The tube on the left front of the instrument is the inlet tube, and the tube on the back is the outlet tube).

3、 Plug in the power, turn on the main power switch and the circulating water switch. The power indicator light is on, indicating that the power has been connected. At this time, the temperature controller of this machine will enter the working setting state, and the temperature can be set to the desired position as needed. The temperature setting is detailed in the "Intelligent Temperature Controller User Manual". At this time, the cooling indicatorCOOLIf the light is on, it indicates that the temperature inside the sink is higher than the set temperature; If the heating indicator light is on at this time, it indicates that the temperature in the sink is lower than the set temperature.

4、 If external circulation is required, cut open the circulating water pipe next to the control box and connect the outlet and inlet pipes separately (see details)2B）Press the loop switch in the direction“ON”At this point, the circulation pump starts working and enters the external circulation state.

5、 When the temperature reaches the set position, the water tank cover can be opened for the required operation.

6、 If you need a faster cooling speed, you can add antifreeze to the sink. The ratio of antifreeze to water is1：1It is appropriate.

4、 Precautions

1、 Liquid medium should be added before use, and the liquid added to the water tank should not be lower than the height of the tank50%It is strictly prohibited to heat without liquid to prevent the heating tube from dry burning and damage.

2、 Do not frequently turn on or off the power supply during work to ensure the longevity of the refrigeration unit.

3、 If there is dirt in the liquid inside the box, it should be replaced in a timely manner.

4、 It is strictly prohibited for various solutions to enter the control box to avoid damaging machine components.

5、 Use power supply220V 50Hz，The power supply must be greater than or equal to the total power of the instrument, andProper grounding should be ensured during use to prevent accidents.

6、 The instrument should be placed in a ventilated and dry place, with the back and sides away from obstacles30mmDistance.

7TheAfter use, all switches should be turned off and the power plug should be unplugged.

8、 When the instrument malfunctions, please have a technician who understands electrical appliances check or notify the manufacturer for repair.

Note: Special specifications and sizes can be customized according to requirements