1) It is a display of the common cathode. It uses the principle of the positive electrode as the segmented input, with the ground wire as the common output, and the segmented input is valid as a high-level input. 2) It is a display with a common anode. It uses an anode as an aggregate input, and in contrast to the common cathode, the segment is effective at a low level output ...

In a variety of electronic control equipment, digital display has become an indispensable and important link. The electronic devices and corresponding driving circuits used for digital display are called digital displays. Commonly used digital displays include glow digital tube displays, fluorescent digital tube displays, projection ...

(1) Categorize by display color 1. Monochrome display There are two types of displays: multi-grayscale monochrome display and VGA multi-frequency monochrome display. These displays are small, lightweight, clear and inexpensive, making them suitable for highly mobile workplaces. 2. Color ...

1. The special integrated instrument chip has more reliable anti-interference and stability. 2. Signal input, which can be matched with commonly used thermal signals through menu settings. 3. The display range, transmission output range, alarm value and alarm mode can be modified online. 4. Soft ...

1. First of all, the digital display should be installed on the cabinet, so the overall coordination should be considered, too large may not fit, too small to see the display numbers. 2. In addition, the large size of the instrument is generally more expandable, the same function price may be expensive, the small size of the instrument may be ...

1. Sensor type (this is based on the actual sensor used) 2. Upper and lower limit range (usually marked on the sensor) 3. Output range setting (current or voltage signal output) 4. Alarm value setting 5. Communication parameter setting (if no point 3 is set, ...)

1. Prepare the thermostat, wires, and thermal resistance, and print out the wiring diagram of the thermostat 2. Use wire strippers to strip off the wire skin, use crimping pliers, and press the wire end to the cold-pressed terminal. 3. Connect the 220V power supply to the inlet terminal of the thermostat, and connect the thermal resistance to the thermostat ...

1. Lower limit deviation alarm setting: press the SET key to select and display "SLP", the green display screen displays the value of the parameter, and select the shift, increment, and decrement keys to set or modify the parameter. This parameter indicates the difference between the alarm point and the master setpoint. 2. The upper limit deviation alarm is set ...

The reasons why the temperature control table shows HHH are as follows: 1. The thermocouple signal line is reversed, or short. 2. If the temperature control meter is in normal use before, it is recommended to check whether the signal line of the thermocouple is broken. 3. The wire inside the thermocouple is broken. 4 ...

Fault 1: The device does not display after powering on Solution(s): First of all, check whether the terminals of the device have been connected to the neutral live wire, and make sure that the neutral live power supply can work normally. Then start to check whether the cable between the LCD motherboard and the device drive power supply is ...

1. Lower limit deviation alarm setting: press the SET key to select and display "SLP", the green display screen displays the value of the parameter, and select the shift, increment, and decrement keys to set or modify the parameter. This parameter indicates the difference between the alarm point and the master setpoint. 2. The upper limit deviation alarm is set ...

Floor heating thermostats can be divided into digital thermostats and analog thermostats according to different input and output forms. Digital thermostats generally have liquid crystal display or digital tube display panels, and set and control the temperature through buttons, while analog thermostats generally use knobs or slider band wave wheels to set ...

1) Separate households are independently heated, and floor heating is installed in small households, and boiler temperature control is applicable. 2) Separate households independent heating duplex building installation floor heating room temperature control. 3) Separate households for independent heating, large duplex villas are suitable for floor heating stratified temperature control. ...

1. Mechanical The sensitive gas diaphragm box or thermal bimetal sheet is used as the temperature sensing element to form the temperature control switch of the mechanical contact. This kind of thermostat is more in the European and American markets, and only a few domestic manufacturers promote such products. Mechanical floor heating thermostats usually have contact currents of no more than 8A, which are suitable for ...

1. Wall installation, the height is about 1.2 meters, generally on the same horizontal line as the electric lighting switch of the home. 2. Installed on a wall where the surrounding air flows freely, and is not affected by other heat sources (e.g. sunlight), air flow from doors and windows, or external wall temperature, etc. 3. Advance ...

Take CD901 as an example, L(1) pin to 220 volt live wire, N(2) pin 220 volt neutral wire, 3,4 pins for the first output, 5,6 pins for the second output, 7, 8, 9 pins are alarm output, Finally, the three pins are connected to thermocouples or PT100 ...

* Alarm table {ALM1} (standard built-in) A: Upper limit deviation alarm G: Standby upper and lower limit deviation alarm attached B: Lower limit deviation alarm H: Upper limit input value alarm C: Upper and lower limit deviation alarm J: Lower limit input value alarm D: Alarm in the range K: Attached standby ...

Wiring Warning: If the instrument fails or an error occurs, which can cause a system failure, an external protection circuit is installed to prevent such accidents: In order to prevent damage or failure of the instrument, choose an appropriate fuse to protect the power cord and input and output lines from strong power shocks. Power supply ...

The instrument can be cleaned only after the power is off; To remove stains from the monitor, use a soft cloth or cotton paper; The display is easy to be scratched, and it is forbidden to use hard objects to operate the panel buttons, otherwise the keys will be damaged or scratched. ...

Thermocouples, RTDs, analog and other signals are freely inputted, and the range can be set freely; The software zeros the full degree, the cold end measures the temperature separately, the amplifier is self-stabilizing, and the display accuracy is better than 0.5%FS; Fuzzy theory combined with traditional PD method, fast and stable control, advanced tuning ...

1. For thermocouple input, the corresponding compensation wire should be used. 2. For RTD input, 3 wires with low resistance and no difference should be used 3. The input signal line should be far away from the power line of the instrument. Power supply and load lines to avoid noise interference 4. The instrument power cord is usually ...