RKC Level Gauge – How to install a buoy level gauge

Principle of electronic thermostat: The electronic temperature controller (resistive type) is measured by the method of resistance temperature sensing, and generally uses platinum wire, copper wire, tungsten wire and semiconductor (thermistor, etc.) as the temperature measurement resistor, which has its own advantages and disadvantages. Household Air Conditioner Temperature Controller ...

There are many models of temperature controllers, and the output methods are slightly different, but the wiring principle is the same. The working principle of the thermostat: the main circuit of the power supply is directly connected to the heating device through the main contact of the AC contactor.

1. What is the principle of the sudden jump thermostat? The sudden jump thermostat is a kind of thermostat, which is a series of automatic control elements that are physically deformed inside the switch according to the temperature change of the working environment, resulting in some special effects and on-off action. Sudden jump ...

1. The cleanliness and finish of the contact surface have a great impact on the working state of the contact. When the appearance of the contact is rough or there is residue on the contact, it is easy to cause arcing and reduce the life of the contact. Therefore, the parts cleaning process should be improved to eliminate the residues; Add the process of residue selection, ...

First, the temperature does not appear 1. Fault with the temperature sensor If the temperature probe of the temperature sensor breaks or the wire is broken, the sensor does not have a digital display when the temperature sensor is connected, but only shows the "----" and sounds an alarm.

1. The power indication is normal, but the temperature controller has no screen display. Most of this fault is caused by the heating of the voltage regulator element (7805 or 7812) on the thermostat during long-term use, which leads to the breakpoint of the solder joint, and sometimes it is caused by the phenomenon of virtual soldering at the factory, and the main re-soldering can be done. 2. Temperature controller ...

Fault 1: The thermostat does not turn on (does not light up) Analyze the causes 1. Wrong wiring 2. The voltage of the input terminal is not enough or the input terminal is damaged by empty opening and leakage 3. Whether the cable between the panel and the power board is broken or plugged incorrectly 4. Load short circuit or open circuit, probe ...

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 ...

The working principle of dry-type transformer thermostats The dry-type transformer temperature controller is a new generation of controller designed for the safe operation of dry-type transformers. The controller adopts single-chip microcomputer technology, and uses three platinum thermal resistors embedded in the three-phase winding of the dry-type transformer to detect and display the transformer.

Mechanical thermostat mainly refers to a temperature control method that adjusts refrigeration by rotating the button, with an expanding thermostat, which will automatically expand and contract according to the change of temperature, so as to control the power supply, the most primitive type, and the structure is relatively simple. Advantages of mechanical thermostats: ...

Master the common problems of several common intelligent temperature controllers, and solve them by yourself when you encounter problems, and you don't need to spend time and effort to find someone to repair, the common problems are as follows: 1. Heating for a period of time, the temperature does not change. Ambient temperature (e.g., room temperature 25°C) is displayed at all times ...

1. Set temperature: Press the SET button to set or view the temperature set point. Press the SET button digital tube characters to start flashing, indicating that the instrument has entered the setting state, press the △ key to increase the set value, press the ▽ key to decrease the set value, long press the △ key or ▽ key The data will change rapidly, press the SET key again ...

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 ...

Faulting and troubleshooting of vapor pressure temperature controllers (1) Common faults and common faults of the vapor pressure type temperature controller include contact burning or adhesion, failure of the mechanical transmission mechanism and leakage of temperature sensor in the temperature sensing tube. Its detection method is: put the thermostat knob in a parking position, and use ...

1. Used to control fan coil unit, electric valve, damper and other equipment; 2. The switch adopts toggle type, which feels comfortable and has a long life; 3. Set the temperature by twisting (the temperature range can be limited); 4. The thermostat can be installed directly on the wall or on the standard junction box; ...

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 ...

1. The principle of central air conditioning thermostat Mechanical thermostats can be divided into vapor pressure thermostats, liquid expansion thermostats, gas adsorption thermostats and metal expansion thermostats. Among them, the vapor pressure thermostat is divided into inflatable type, liquid-gas mixed type and liquid-filled type. Domestic...

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 ...

In winter, the surface of the power plant's measuring instruments is frozen and condensed, which can lead to poisoning, fire and even explosion. Therefore, the cold and freeze protection of the appearance of the instrument is particularly important. First, the selection method (1) Choose the appearance with insulation device. According to the category of appearance ...

1. Confirm the angle sample first. See where the angle of the sample is today. 2. Pick up the thermostat, first confirm whether the switch of the thermostat is tight, stuck, whether the white dot falls off, whether there is sound when the thermostat contacts are in contact, and if there is no sound, there should be two possibilities! ...