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 residue selection processes to improve the quality and reliability of thermostats.
2. Improve the cleanliness and finish of the appearance of the contact, and strengthen the cleaning of the appearance of the contact in the daily operation, so as to remove the oxide, so that the quality and life of the sudden jump thermostat can be improved.
3. In the selection of contact data, the data suitable for the contact working environment is selected, the AgNi15 contact data is recommended for the working environment with a large load, and the Ag contact data can be selected for the environment with a small load.
4. According to the analysis of the operating mechanism of the reed, it is particularly important to reasonably plan the structure of the reed, select the reed with appropriate stiffness, and correctly set the position of the action point of the push rod to improve the function of the thermostat.
5. In order to prevent the phenomenon of cracking, the rounded corners of the reed can be smoothly planned to prevent the convergence of stress.
6. Fractures in the bend of the reed are caused by insufficient fatigue strength, so improving the fatigue strength of the reed is the solution to prevent this situation.
7. The influence of the hot bimetal sheet on the temperature control of the sudden jump thermostat is obvious, so the hot bimetal sheet should be heat treated many times to enhance its fatigue resistance.
8. The two parameters need to be strictly controlled in the planning of the hot metal sheet, namely the radius of the external circle and the arch height, and the reasonable control of the two parameters is conducive to reducing the probability of drift in the hot bimetal sheet.
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More on that
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RHK product model introduction
RHK Recommended Product Models:
Single-phase power conditioner
THV-10（20A, 30A, 45A, 60A, 80A, 100A）
Ethernet communication converter
COM-ME series
USB communication converter
COM-KG
Digital Display Controller (Process/Temperature)
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RK Level Gauge - Introduction to the characteristics of float level gauge
It is suitable for measuring the level and interface of the liquid medium in the container. In addition to on-site instructions, it can also be equipped with remote transmitters, alarm switches, and detection functions.
The indication is novel, the reading is intuitive, eye-catching, and the direction of the observation indicator can be changed according to the user's needs.
Large measuring range ...
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RKC level gauge - buoy level gauge structure composition
The level gauge is composed of five parts: float, traction cable, guide pulley, hammer pointer, display ruler or magnetic flap.
1. Float: The float is welded with two stainless steel (or carbon steel) fasting cones and one stainless steel (or carbon steel) fasting cylinder.
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RLC Thermostat – The reason why the temperature control meter shows HHH
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 ...
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RLC Thermostat – Instructions for installation and use of pop-up thermostats
1. Grounding method: It is connected to the grounding metal parts of the equipment through the metal cover of the thermostat.
2. The thermostat should work in the general indoor environment where the relative humidity of the air is not more than 90%, and there are no corrosive gases, flammable gases and conductive dust.
3. The thermostat adopts contact ...
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RHK thermostat – a rapid detection method for common air conditioner thermostats
1. Bellows or diaphragm air conditioner thermostat
Fault Symptom:
Poor contact or burning, resulting in the circuit cannot be connected; The frequent action of the contact arc and sticking causes the circuit to be unbreakable; The leakage of the thermostat in the temperature sensing chamber causes the contact to fail to operate and lose control ...
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RHK thermostats – an introduction to the classification of displays
(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 ...
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RRKC thermostat – the main function of the thermostat
In most cases, in Europe, the thermostat is a necessary accessory for the wall-hung boiler, and the two are delivered to the user at the same time, and most of the thermostats equipped are intelligent thermostats. In China, nearly 95% of the wall-hung boilers that have been installed in operation and are being installed and debugged and ready to be put into use are not equipped in advance.
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RK thermostat - the performance characteristics of digital display thermostat are introduced
1. The special integrated instrument chip has more reliable anti-interference and stability.
2. Signal input, ordinary heat signal can be connected through menu settings.
3. You can modify the display range, transmission output range, alarm value and online report J mode.
4. Soft ...
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For some considerations in the RKG thermostat setup
RKC Thermostat Operation Note:
1. Clean the instrument only after the power is off;
2. To remove the stains on the monitor, please use a soft cloth or cotton paper;
3. The display is easy to be scratched, and it is forbidden to use hard objects to operate the panel buttons, otherwise the buttons will be damaged or scratched.
RLC thermostat ...
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RKC Level Gauge – Buoy Level Gauge Use and Precautions
1. Support welding under the guidewire:
According to the direction of the movement of the buoy of the level gauge, determine the position at the bottom of the container, and fix the guide bracket (piece 1) under the welded or riveted steel wire
2. Install the guide rail joint.
(1) Straighten the wire forcefully and fix it at the lower support, taking care not to ...
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RKC thermostat - introduction of the three output modes of the thermostat
The first output method is relay output, which is output for temperature control through the switching signal of the relay on/off, which is used to directly control the load less than 5A, or directly control the contactor and the intermediate relay, and control the high-power load externally through the contactor.
The second ...
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RK Thermostat - 5 Common Faults of Thermostat and Solutions
1. After heating for a period of time, it is found that the temperature has not changed, and the temperature has been displayed at the time of the ambient temperature.
In this case, you need to check that the SV value setting value is set, whether the OUT value indicator of the meter is not lit, and whether the No. 3 and 4 segments of the universal meter are 12VD ...
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Wiring method of the RKG thermostat
Take CD901 as an example,
L(1) pin to 220 volt live wire,
N(2) pin 220 volt neutral wire,
3,4 pins for *** output,
5,6 pins for the second output,
7, 8, 9 pins are alarm output,
The rear three pins are connected to thermocouples or PT100 and so on.
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RKC Level Gauges - Advantages and Disadvantages of Several Common Level Gauges Introduction
1. Float level gauge is an instrument that relies on the principle of buoyancy to measure the liquid level. Usually by means of a float in conjunction with a scale, the observer can visually read the height of the liquid level.
Advantages: fast and intuitive reading; Low price; Easy to install.
Shortcoming:...
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Wiring method of the RKG thermostat
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 ...
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RK thermostat - the selection and installation method and precautions of the central air conditioning thermostat
1. Thermostat output control power: The thermostat output control power is the first issue to consider when choosing a thermostat, which is related to the safety and stability of use, and may cause serious consequences if not selected properly, such as: fire. Thermostat products are marked with output control voltage and current, and the ...
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RRKC thermostats – the commissioning steps of mechanical thermostats
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!
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RLC thermostats – a common failure of mechanical thermostats
1. The terminal post of the thermostat is stuck and falls off
Cause the compressor not to start, the thermostat dynamic and static contacts can not be disconnected, so that the compressor does not run, the thermostat contacts can not be disconnected, so that the motor of the refrigerator compressor does not stop, in addition to the balance elastic force is too weak, it can also be ...
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RKG thermostat - an introduction to the characteristics of digital displays
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 ...
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