Dry wet bulb constant temperature and humidity controller color touch screen 4.3-inch

colorful touch screen4.3Inch constant temperature and humidity controller

Equipped with a dry wet bulb temperature and humidity sensor

Solve the problem of service life in corrosive gas environments such as high temperature, high humidity, acid mist, etc

WM- RH/℃-2PT100 type

Specially suitable for use in environments with acid mist, high temperature, and high humidity, such as lead-acid battery plate curing chambers,

Measure and display, set multi-stage parameters according to process parameters, and control temperature and humidity

Dry wet bulb temperature and humidity sensor (consisting of two PT100 temperature sensors)

Widely used in constant temperature and humidity places, constant temperature and humidity laboratories, stability testing laboratories, food freeze-drying boxes, archives, cultural relics museums, plant factories, computer rooms, agricultural greenhouses, poultry hatching, wine cellar refrigeration, cold storage, comfortable environment air-conditioned rooms, and sunny glass rooms.

main features

·

Adopting a 4.3-inch touch screen as the human-machine dialogue interface, the appearance is exquisite.

·

Data and parameters are input through touch, with a user-friendly human-machine interface that allows for what you see to be what you get. Customers can operate without the need for user manuals

·The parameter settings are simple, and can be completed in one go according to the interface prompts.

·The sensor adopts a dry wet bulb (dual PT100) temperature and humidity sensor, which is maintenance free and highly reliable·

Software zero and full adjustment, temperature and humidity compensation, amplifier self stabilizing zero, display accuracy better than

0.5%FS

·

Fuzzy theory combined with traditional methodsPID

1.Method: Control quickly and smoothly.· Equipped with power outage memory function, it can continue to run from the breakpoint after power is restored, ensuring the smooth completion of the entire experiment. It can also be shut down, and customers can choose according to their own needs.

2.·Multiple output channels: commonly used ones include fans, heaters, compressors (for refrigeration and dehumidification), humidifiers, automatic ventilation, etc

3.Defrosting, lighting, auxiliary switches, and special signals can be customized.mainTECHNICAL INDEXinput0.5：Dry wet bulb temperature and humidity sensor or digital integrated temperature and humidity sensor (used in conjunction).recording function: None.

4.temperature range: Temperature 0.1-25 - 99℃. Accuracy ±℃, humidity0 - 100%Accuracy ±12%

5.Resolution and error：1℃0.1%

6.Error input within ± of full range0.5%30±

One word9999sampling period9999：

7.order/sec

8.Operation mode: Program running, shared Duan program, each program can set temperature, humidity, number of supplementary lighting groups, time

9.Time * largeMinutes, adjustable loop, * large

10.A cycle.Setting method

11.Chinese menu, touch screen inputViewing method

12.You can view the current status of each output port, measured temperature and humidity values, and the number of cycles completedNumber of running segments, running time, set total time, and remaining time.

13.memory functionDue to accidental power outages, the experiment continued to run from the breakpoint after the power was restored, ensuring the smooth completion of the entire experiment.Jump segment timing functionDue to power outage, the program is not synchronized with normal operation, and can be run in segments and synchronized through time adjustment.Alarm output:The buzzer beeps to provide a prompt.

control output

Fans, heaters, compressors, humidifiers, automatic ventilation, defrosting, lighting, auxiliary switches, and special signals can be customized.

control mode30: Fuzzy

14.PIDcontrol+Differential controlThe compressor and dehumidifier have start-up interval settings to ensure the safety of the compressor.

15.The fan has a shutdown delay function.After shutdown, other outputs are turned off and the fan continues to operateClose in seconds to prevent residual heat and cold from staying inside the machinesupply voltage:

16.Using modular power supply, directly connected externallyAC85-264V(50/60Hz)The mains power is sufficientwork environment: Temperature

0-50

℃, humidity

<85%RH1

Panel size：

164mm

2.×
3.102mm
4.Operating instructions
5.Connect the power to the logo screen, as shown below.Enter the main control screen, as shown belowIntegrated input/output board as shown in the figure:Touch the lighting button on the main screen to activate the lighting inside the box, then press it again to turn off the lighting.Touch the setting button on the main screen to set the temperature and humidity data, time, switch, and cycle times for each segment.By touching the view button on the main screen, you can view various data during the operation of the program, including temperature setting values, temperature measured values, temperature output values, humidity setting values, humidity measured values, humidity output values, as well as various indicator lights, set cycle times, actual run cycle times, program segment numbers, set total time, run time, remaining time, etc.

Touch the run button on the main screen to bring up a prompt screen. Once confirmed, the device will start running, and at the same time, this button will be converted into a stop button. This button is an alternate button. Press the stop button again to bring up a prompt screen. Once confirmed, the device will stop running

Touch the bottom left corner of the main screen to enter the touch screen parameter setting screen, where you can set the parameters of the touch screen1,2

And changing the system time, etc,Set the conditions for starting and stopping the fan, compressor, heater, dehumidifier, and humidifier. Can set heaters and humidifiersP\\I\\DParameters and adjustments for temperature and humidity, as well as corresponding output ports for each component..Below are explanations for each screen3

In (picture)30）Press the setting button on the main control screen to enter the following screen, as shown in the figure0Entering this screen, you can edit the data of each section by touching the place where you need to input the data9999,1Pop up data input keyboard,

You can input data now1picture5

The program has a total of

Segment, when the time is set to6

At this time, it means the program has ended. *On the next page, you can set the number of loops for the program, where * is large

, * Xiao Wei

. Picture

4:1In (picture).）Touch the view button on the main control screen to enter the following screen, as shown in the figure9

In this screen, you can see the temperature set value, temperature measured value, temperature output value, humidity set value, humidity measured value, humidity output value, and output indicator light. In order to have a clear understanding of the operation of peripheral appliances.Press the page key to enter the next page. picture

You can view the set number of cycles, the actual number of cycles that have been run, the number of segments set in the program10

Various data during the operation of the equipment, such as the number of running segments, the set total time, the time already run, and the remaining time.4321

If there is an unexpected power outage during operation, causing time synchronization, you can also operate "jump segment" and "segment remaining time adjustment" as needed on this page. And synchronize the time11

In (picture)12

）Touch the bottom left corner of the main control screen to enter the touch screen parameter setting screen13

picture
Can enter the user settings screen and manufacturer settings drawing1On the above screen, follow the manufacturer's settings,2Prompt for password input. picture3Enter password, factory password is4Press the OK button to enter the manufacturer parameter setting screen. picture5**Reset the manufacturer password, which is the password just entered to enter the manufacturer settings. If you make any changes, remember to do so, otherwise you won't be able to enter the factory settings parameters next time. picture6The third item is to set the communication address as shown in the following figure14

**Setting process parameters is also an important step in controlling the start and stop conditions of all peripheral actuators.1Touch 'Process parameter settings' on this screen to enter the screen in sequence2、3、4、5、6、

. PictureTouch 'Set Process Parameters' on this screen to enter the screen in sequence、、、、、.When usedPIDWhen calculating the heating output mode,KPRepresents a proportionality constant,2TiRepresents the integration time,TdRepresenting differential time. When the heating is working in this mode, the controller will automatically calculate the heating output value based on the temperature difference, temperature rise rate, and accumulated difference.PID2When in control mode, output cycle1.26T0.74assume

In seconds. The size of the output value is controlled by the heating on time, for example, during operation, the output value of the heating is calculated as63%So, then0.63X2=1.26So here.
In seconds, beforeThe second time is connected, and thenThe second time is closed.PID is proportional,points,Abbreviation for differentiationProportional adjustment function: It reflects the deviation of the system proportionally,Once there is a deviation in the system,Proportional adjustment immediately produces a regulating effect to reduce deviation. The proportional effect is significant,Can accelerate adjustment
,Reduce errors,But an excessive proportion,Decrease the stability of the system,Even causing system instability.Integral adjustment function: It is to eliminate steady-state errors in the system,Improve tolerance. Because there is an error,Integral adjustment will be carried out,Until there is no difference,Integral adjustment stopped,Integral adjustment outputs a constant value. The strength of the integration effect depends on the integration time constantTi,TiSmaller,The stronger the integral effect. converselyTiThe integral effect is weak if it is large,Adding integral adjustment can reduce system stability
,The dynamic response slows down. The integral effect is often combined with two other regulatory laws,consist ofPIRegulator orPIDRegulator.Differential regulation effect: Differential effect reflects the rate of change of system deviation signal,Having foresight,Anticipate the trend of deviation changes,Therefore, it can generate advanced control effect,Before the deviation is formed,It has been eliminated by differential regulation. therefore,It can improve the dynamic performance of the system. When selecting the appropriate differential time,Can reduce overshoot,Reduce adjustment time. Differential effects have an amplifying effect on noise interference,Therefore, excessive differential adjustment,Not conducive to system anti-interference. in addition,Differential reactions involve the rate of change,And when there is no change in the input,The output of differential action is zero. Differential action cannot be used alone

,

It needs to be combined with two other regulatory laws,consist of0PDperhapsPIDcontroller.Special note:

equal
P9.9
Set the value asWhen not executedPID
Calculation, currently working

ON-OFF15

pattern.The lower and upper temperature limits here can limit the temperature setting range in the setting screen, and data outside of this range cannot be set.The larger the filtering constant, the smoother the temperature and humidity display. *Da Wei21When using the balanced mode, the compressor does not stop during operation, and heating and humidification are carried out through-40PID100Calculate the output and achieve balance by offsetting the cold and heat. Characteristics: Small fluctuations in temperature and humidity, but relatively energy consuming.19.5When using the start stop mode, the start stop of the compressor is controlled by the deviation of temperature and humidity, which is characterized by energy saving, but the fluctuation of temperature and humidity is relatively balanced, with large fluctuations.19.7Next page image

This screen sets the conditions for starting the heater, including setting the upper and lower return differentials, as well as the delay time for compressor restart. For example, in the above picture

Y1The output corresponds to the heater, if the set temperature isDegree, first meet the actual temperature requirementtoWithin the temperature range, it is also necessary to ensure that the actual measured temperature is less than

The temperature heater starts, and the temperature rises. When the temperature drops above the lower limit temperature5When the temperature is high, the heater is turned off.

The above settings are based on the specific situation on site. Only controllers with configured parameters can control the optimal state.16

Among them“

>