How to adjust the upper and lower limit temperature of the thermostat?

After the instrument is properly connected, the switch is turned to the "lower limit setting", and the corresponding lower limit setting knob is rotated at the same time, at this time the number shows the required lower limit temperature value, the switch is dialed to the "upper limit setting", and the corresponding upper limit setting knob is rotated at the same time, and the number shows the required upper limit temperature value at this time; Then turn the switch to "Measure", and the number shows the actual temperature value of the measured object. When the actual temperature value is lower than the lower limit set value, the green light is on, and the upper limit relay is the total low pass and the total high break; When the actual value reaches or exceeds the lower limit set value and is still lower than the upper limit set value, the green light and red light are off, the lower limit relay total low break, total high pass, upper limit relay is total low pass, total high break, when the actual value reaches or exceeds the upper limit set value, the red light is on, here the upper limit relay is total low break, total high pass. Generally, when the temperature is controlled, the lower limit relay output can be used for auxiliary heating control, the upper limit relay output can be used for heating control, and the lower limit relay output can be used for temperature control, and the upper limit relay output can be used for over-temperature alarm.

For meters with the suffix "f", the temperature required for the upper limit must be adjusted to a higher temperature value than the lower limit. When the actual value is lower than the lower limit value, the green light is on, and the relay is always low-pass, and the temperature rises; When the actual value is higher than the lower limit value and lower than the upper limit value, it is still the total low pass, and the temperature rises; When the actual value is higher than the upper limit value, the red light is on, the relay total high pass, total low disconnection, stop heating, only when the actual temperature value is lower than the lower limit value, the green light is on, the total low pass, and the cycle repeats. There is only one relay output in the whole process for easy mating with the load.

What kind of thermostat? **Air conditioned? General** air conditioner thermostats cannot limit the upper and lower temperature limits on the wiring.

Thermostats with alarm function can be purchased. The general symbol of the alarm function is al1In this way, it is enough to set an al temperature and a heating temperature.

Intermediate relays should be added to achieve the logic function. The logic function thinks for itself. I don't have time to think about it now, it's more troublesome.

I just used my mobile phone to take a wiring diagram of a thermostat under my machine, and you can see the terminals of AL1 (com, NO, NC in total). Heating control mine is now using a solid state relay, so there are only two wiring, if it is a switch type, the heating should also have a total of three terminals: com, no, and nc. It is impossible to control the upper and lower limits of the temperature, and it is impossible to avoid logic circuits with relays, whether you use two thermostats or one thermostat.

For example, control the heating when it is lower than 200 degrees, stop heating when the temperature rises to 300 degrees, and start heating again when the temperature drops to 200 degrees. Isn't that so?

Upper limit setting of thermostat: press the SET button to select and display "SHP", the green display will display the value of this parameter, and select the shift, increment, and decrement keys to set or modify this parameter. This parameter indicates that the alarm point is higher than the master setpoint.

Thermostat lower limit setting: press the SET button to select and display "SLP", the green display will display the value of this parameter, and select the shift, increment, and decrement keys to set or modify this parameter. This parameter indicates the difference between the alarm point and the master setpoint.

When the temperature of the controlled object changes, the material (usually liquid) in the temperature sensing part of the thermostat will produce corresponding thermal expansion and cold contraction (volume change), and the diaphragm box connected with the temperature sensing part will expand or contract.

The temperature sensor automatically samples and monitors the ambient temperature, and when the ambient temperature is higher than the control set value, the control circuit is activated, and the control differential can be set. If the temperature is still rising, when it rises to the set overrun alarm temperature point, the overrun alarm function will be activated. When the controlled temperature can not be effectively controlled, in order to prevent the destruction of the equipment, the equipment can also be stopped by the function of tripping to continue operation.

It is mainly used in various high and low voltage switchgears, dry-type transformers, box-type substations and other related temperature use fields used in the power sector.

1. Upper limit setting of thermostat: press the SET button to select the display display "SHP", the green display DU display shows the parameter value, select the shift, increase or decrease key to set or modify the parameter. This parameter represents the difference between the alarm point and the master control set point.

2. Lower limit setting of thermostat: press the SET button to select and display "SLP", the green display screen displays the parameter value, select shift, increase or decrease key to set or modify the parameter. This parameter indicates the difference between the alarm point and the main control set point.

3. When the temperature of the controlled object changes, the material (usually liquid) in the temperature-sensing part of the thermostat will have the corresponding physical phenomena of thermal expansion and cold contraction (volume change), and the diaphragm box connected to the temperature-sensing part will expand or contract.

The refrigerator temperature control knob is generally geared, and the higher the number, the lower the temperature in the freezer. Generally, we put it on 3 gears in spring and autumn, depending on your requirements, whether the freezer can reach below minus 18 degrees. In order to achieve the purpose of food preservation and power saving, we can play 2nd or 3rd gear in summer and 4th or 5th gear in winter.

Some people may want to ask, in winter, the temperature is low, but the temperature is set low (the thermostat value is large), and in the summer, the temperature is high, but the temperature is set high (the thermostat value is small), is it the opposite? In fact, many people have this misconception, thinking that the temperature of the refrigerator can be set high when the temperature is low in winter, and the temperature should be set low when the temperature is high in summer. Why is the refrigerator thermostat set up like this?

Because, the temperature of the freezer compartment of the refrigerator is controlled by the temperature in the storage room, and look at your temperature control knob is in the storage room. The temperature in the storage room is generally 4 8 degrees, in winter, the indoor temperature is close to this temperature, if the thermostat knob is still on 3 or less than 3, the refrigerator compressor is rarely started, although the temperature in the storage room can meet the requirements, but the temperature of the freezer can not reach below minus 18 degrees, the food is easy to deteriorate, and the food thaws and melts in serious cases. In summer, the temperature is relatively high, if the thermostat knob is still on 3 or greater than 3, the refrigerator storage room in order to meet the temperature requirements, the compressor starts frequently, although the temperature of the freezer is lower than minus 18 degrees, but the waste of electrical energy, shortens the service life of the refrigerator, which is also what we do not want.

So properly adjusting the refrigerator temperature controller knob can keep us fresh and save electricity.

It's very simple, there is a starting temperature, a stop temperature, such as the temperature to be controlled at 45 degrees, the starting temperature is set to 43, and the stop temperature is set to 47, so it's OK. Coarsely controlled, there is a fluctuation in temperature.

It's okay to adjust the start temperature and stop temperature, for example, the start temperature is 25 degrees, press the corresponding button until 25 is displayed. For example, stop the temperature at 30 degrees, press the corresponding button until 30 is displayed, so that the setting is complete, and the temperature will always be between 25-30.

Press the set button in the middle, when the light in the upper left is on, adjust the up and down keys under the stop temperature to set the temperature you want it to stop working, and continue to press the set button when the light in the upper right is on, press the up and down keys under the start temperature to set the minimum temperature you need it to work, and then press the set number without jumping.

For example, if you want to set higher than 26 to turn on the first group of fans, and lower than 23 to turn off the first group of fans, you can set the temperature to +26, the return difference value is 3, the judgment value is high, and the output group 01 can be realized.

Turn the switch to the "upper limit setting" and rotate the corresponding upper limit setting knob at the same time, and the number will show the desired upper limit temperature value; Then turn the switch to "Measure", and the number shows the actual temperature value of the measured object.

For example, if you want to set higher than 26 to turn on the first group of fans, and lower than 23 to turn off the first group of fans, you can set the temperature to +26, the return difference value is 3, the judgment value is high, and the output group 01 can be.

Incubation is generally around 30 degrees, and you can set the stop to 28Start tune to 18

Read the manual, operate according to the manual, you can set how many degrees to start and how many degrees to stop.

The income obtained from providing incubation services to the incubation targets is exempt from VAT, and everyone can see clearly.

The button in the middle, if not, look at the manual.

Just find the corresponding switch to adjust it.

Set it up according to your environment and your own needs.

Press the function button first, and then press the up and down buttons to adjust the temperature.

The up and down under the 2 words of temperature is to adjust the temperature, like an air conditioner remote control.

With this kind of thermostat, you can set the temperature by pressing the up and down buttons directly.

Isn't it broken, this thermostat, how did it start to stop the light didn't have it.

Thermostat Upper Limit Setting:Press the setting key to select the display "shp", the green display is to display the parameter value, and select the shift, increase or decrease key to set or modify the parameter. This parameter represents the difference between the alarm point and the master setpoint.

Set the lower limit of the thermostat:Press the setting key to select "SLP", the green display shows the parameter value, and select the shift, increase or decrease key to set or modify the parameter. This parameter represents the difference between the alarm point and the master setpoint.

ThermocouplesThermocouples are the most commonly used temperature sensors for temperature measurement. Its main advantages are a wide range of temperatures, adaptation to various atmospheric environments, high intensity, low strength, no power supply, and the cheapest.

A thermocouple consists of two different metal wires (metal A and metal B) connected at one end. When one end of the thermocouple is heated, there is a potential difference in the thermocouple circuit. The measured potential difference can be used to calculate the temperature.

Thermostat setting temperature method Steps: The first line of numbers represents the real-time temperature of the controlled equipment, and the second line represents the required temperature, which can also be adjusted. The lower left corner is the thermostat switch, and the red light indicates that the equipment controlled by the thermostat has started to work.

Click the bottom middle button to be the cycle button, and click the upper and lower buttons on the right to adjust the temperature to your needs. Xiamen Yudian Automation Technology Co., Ltd. thermostat equipment is suitable for temperature heating control in plastic machinery, food machinery, packaging machinery and heating furnace and other industries, supporting a variety of thermocouple or thermal resistance input, controlling the temperature range of -50 2300, level measurement accuracy.

The thermostat can be set with upper and lower values. For example, the upper limit is set to 100 and the lower limit is set to 70. The temperature is 70 100, which is the normal working range.

When the temperature is below 70 or above 100, the thermostat outputs a signal. This signal can be set to output alarm, heater, cooler on and other related signals according to the actual circuit situation. For example, if the heater is controlled with a thermostat, if the temperature is between 70 and 100, the heater will start heating when the temperature is lower than 70; When the temperature is higher than 100, the heater stops heating.