self adjustment function intelligent constant temperature controller/ZNHW-III PID temperature controller - ZNHW-III

ZNHW-III intelligent constant temperature controller

ZNHW-III intelligent constant temperature controller Product features

ZNHW- III type intelligent constant temperature controller adopts computer wafer as main control unit to control temperature .Using multiple digital filter circuit , fuzzy PID control algorithm ,with double screen digital display , self adjustment function ,high precision ,small temperature impact ,one-button tick operating , controlled silicon manage the output ,160-240V wide voltage power supply and with thermocouple broken protection function. Shell is made by one-time injection molding process.With features of beautiful appearance,easy operating, lightweight and flexible,it is the ideal experimental equipment to control the electric furnace and electric heating mantle to do the precise temperature control heating test.

ZNHW-III intelligent constant temperature controller Usage

1. Connect to the AV 220 power source ,open the power switch.The PV display window will display the actual temperature,such as the room temperature 25°C.The SV display window will display the last time setting temperature value,such as 100°C.

2.Insert the power line of the controlled heater into the output plug of the temperature controller.

3. Put the temperature sensor into te controlled liquid or container.

4.Single key operation ,keep pressing the adding and reducing button so as to set the required temperature swiftly,such as 100°C.The green light on express heating and the green light off express stoping.The microcomputer will confirm the quantity of heat according to the temperature difference between the setting temperature and current temperature to make sure that there is no temperature error and warming can be made in one time,at the same time to maintain the radiation balance with a tolerance of ±1°C between the setting data and real-time data,making it easy to finish the heating procedure .

5.Self adjustment function:if starting the self adjustment function,the heating time will be shortest,the temperature impact will be smallest and the balance will be best when different heating zone or different heating power or the quantity of solution is not regulation.But if the heating medium or temperature condition is changed the self adjustment function should reset.

6.Start self adjustment:press the shift key for five seconds,then the number of the set window will flash,which expresses it is entering the self adjustment status.After three times of temperature impact,the number will stop flashing,which indicates the self adjustment is over and it can be used.But remember that self adjustment can only be applied at the beginning of heating,the self adjustment will be inaccurate in midway.

7.With thermocouple broken protection function,when the thermocouple is not connected well or switch off , the display window will show "hhhh” ,when green light is off , instrument will stop heating , please check it before using.

ZNHW-III intelligent constant temperature controller Attention

1.Please put the sensor with a glass tube to prevent corrosion when do the corrosive liquid measurement.

2.Non-professionals please do not open the instrument.

3.Environmental temperature:0-50 °C,without corrosive gas.

4.Relative humidity:35%-85% (no condensation )

5.Do not overload use.

6.Instrument should be earthed well .

7.Long time no use ,please keep it clean and reserve it in a dry and without any corrosion air place .