1. The indicated value is large (or out of range).
According to the investigation of our staff, this kind of problem often appears in the atmospheric pressure workshop. When we find that the counterweight of the float in the float level gauge is at a low point, the liquid level must be very high at this time, and the glass plate is inconsistent with the instrument indication, and the value is drunk. Of course, don't panic if there is a problem, and replacing the float in time can solve this kind of problem.
2. The float does not change with the liquid level and is in a high position
When we find this kind of situation, it is usually the problem of the float in the float level gauge, but it is not damaged, it may be caused by the float falling off. In this case, the staff only needs to check and reinstall the float in time.
There is also a situation, that is, because the customer's tank is made of magnetic metal, the float is too high in the case of rising liquid level, because there is a magnet in the float, and the coupling effect with the tank, the float is sucked, and in the process of the next liquid level drop, the float is always in, and the external performance is that the liquid level value does not change, and is always at a high point. In this case, the influence of the tank material on the float is not considered in the selection and production stage, and the remedy is to set up a fixed point clamp at the lower end of the float that is sucked, so as to achieve that the float cannot reach the position where it is sucked.
3. The indicated values are generally low
There are many reasons for this, and it can also be caused by the drop off of the float occasionally, as well as the breaking of the connecting rod between the floats, or damage to the hands or heads of the floats. Therefore, it is very important for us to carefully check when solving this problem.
For example, we need to check that the compression gauge is working properly; whether the float link can be twisted flexibly; Whether the pointer and meter head are damaged, if there is no problem, it should be a broken connecting rod, and the connecting rod can be replaced. However, if there is still a fault after replacement, there must be a loophole in the previous inspection, please check it again.
4. The transmitter of the float level gauge suddenly has no indication
When there is no abnormality in the measurement display, that is, the polarity is not reversed, and there is no power output on the current conversion side, it must be that the instrument head is damaged, and the staff can solve the problem by repairing or replacing the instrument head in time.
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RKC thermostat How to quickly understand the wiring diagram of the thermostat
There are many models of thermostats, and the output methods are slightly different, but the wiring principle is the same, as long as you understand the working principle, we can directly wire any thermostat.
The working principle of the thermostat: the main circuit of the power supply is directly connected to the heating installation through the main contact of the AC contactor.
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RKC thermostat – a common fault of mechanical thermostats
1. The thermostat terminal post is stuck and falls off
As a result, the compressor does not start, the dynamic and static contacts of the thermostat cannot be disconnected, so that the compressor does not run, and the thermostat contacts cannot be disconnected, so that the motor of the refrigerator compressor does not stop.
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RKC level gauge - key points of use of float level gauge
1. The level gauge is adjusted normally, and after putting it into use, it is found that the float shows a period of "sucking" phenomenon in a certain position. This is mainly caused by the level gauge passing through the steel platform device and the steel plate too close. Therefore, the device through the steel platform needs to pay special attention to the level gauge connection pipe wall and ...
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RKC level gauge - the correct maintenance method of the float level gauge
(1) After 6 months to 1 year of operation, the sensor should be inspected and routinely checked.
(2) Regularly check whether the sensor is bent and deformed by external force to avoid jamming ball failure.
(3) Regularly check whether the sensor magnetic induction switch element is aging and malfunctioning, ...
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RKC converter – a classification of power converters
Electric motors are divided into two categories: DC motors and AC motors, and AC motors are divided into asynchronous motors and synchronous motors, and their respective speed regulation principles are also different. According to the speed regulation requirements of the motor, it can be divided into two categories: DC power converter and AC power converter:
...
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RKC thermostat – a quick detection method for common air conditioning thermostats
1
Bellows or diaphragm air conditioning thermostats
Fault phenomenon:
Poor contact or burning of contacts, resulting in the circuit not being connected; The contacts frequently act to arc and stick, causing the circuit to not be broken. The thermosensitive agent in the temperature sensing cavity leaks, causing the contacts to be unable to move and lose control.
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rkc thermostat - five advantages of thermostat over PLC
Programmable logic controllers (PLCs) and temperature controllers (thermostats) have similar effectiveness in ensuring effective process control, achieving consistent quality, and minimizing user errors in manufacturing.
Process control equipment has been used in a variety of forms since the 17th century.
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Features and technical specifications of RKC temperature controller
peculiarity
1. Free input of various signals such as thermocouple, thermal resistance, analog quantity, etc., and free setting of range.
2. The software adjusts the full degree, the cold end measures the temperature separately, the amplifier is self-stabilizing to zero, and the display accuracy is better than 0.5%FS.
3. Fuzzy theory combined with traditional PID method to control fast ...
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Key features of RKC thermostats:
Thermocouples, thermal resistance, analog and other signals are freely input, and the range is freely set;
The software adjusts the full degree of zero, the cold end measures the temperature separately, the amplifier is self-stabilizing to zero, and the display accuracy is better than 0.5%FS;
Fuzzy theory combined with traditional PD method to control quickly and stable, advanced tuning method...
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RKC thermostat - how to choose a hotspot couple?
The selection of thermocouples should be based on the application temperature scale, required accuracy, application atmosphere, measurement target performance, echo time and economic benefits.
1. Selection of measurement accuracy and temperature measurement scale
1) The operating temperature is 1300-1800°C, and the accuracy is required to be higher than that of ...
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What should I pay attention to when setting up an RKC thermostat?
Wiring warning:
If the instrument fails or an error occurs, it can cause a system failure, install external protection circuits to prevent accidents:
To prevent damage or failure of the instrument, appropriate fuses are used to protect the power cord and input/output wire from strong power shock.
Power supply ...
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RKC thermostat - Introduction to the functions of mechanical temperature control
1. The temperature setting is set by knob, convenient and intuitive 2. It can be directly installed on the standard junction box on the wall.
3. Beautiful appearance and reliable performance.
4. The switch adopts toggle type, which feels comfortable and has a long life.
5. It can control the two-wire or three-wire electric (ball ...
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RKC thermostat - questions and precautions about thermostat expansion module
1. Under what circumstances should I use a thermostat to expand the module?
The gradual development of the heating field is now very recognized by everyone, and more and more users have begun to install electric heating, of course, when installing electric heating for users, they also encounter some headaches.
For example, a large area ...
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Common faults and analysis of thermostats
Common failures of thermostats
1. There is no display when the power is on. This type of problem first determines whether the power supply is available and whether the power supply matches the power required by the thermostat, and then checks whether the wiring is firm. The problem is still there, then it is the problem of the thermostat itself.
2. There is a display, and the control is wrong. This...
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RKC thermostat - What should be paid attention to when installing a jump thermostat?
1. The use environment of the jump thermostat should avoid stains and moisture, otherwise it will affect the electrical performance of the product, and the thermostat must be used in a working environment with a relative humidity ≤ 90% and no corrosive and flammable media contact. If it needs to be used in a humid environment or submerged liquid, it is necessary to have a thermostat ...
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RKC converter – the design point of the power converter
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What you need to pay attention to in the wiring of the RKC thermostat
1. For thermocouple input, the corresponding compensation wire should be used.
2. For thermal resistance input, 3 wires with low resistance and no difference should be used.
3. The input signal line should be far away from the instrument power line. Power power lines and load lines to avoid noise interference.
4. Instrument power cord ...
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RKC thermostat - Introduction to the working principle and classification of electronic thermostats
Principle of electronic thermostat:
Electronic temperature controller (resistive type) is measured by the method of resistive temperature sensing, generally using platinum wire, copper wire, tungsten wire and semiconductors (thermistors, etc.) as temperature measurement resistors, these resistors have their own advantages and disadvantages. Household Air Conditioning Temperature Controller ...
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Some notes in the RKC thermostat settings
RKC thermostat operation note:
1. The instrument can be cleaned only after the power is cut off;
2. Use a soft cloth or cotton paper to remove stains on the monitor;
3. The monitor is easy to scratch, it is forbidden to use hard objects to operate the panel buttons, otherwise it will damage or scratch the buttons.
The protection of RKC thermostat ...
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RKC thermostat – the working principle and main features of the burst thermostat
How it works:
The jump thermostat is a kind of bimetallic disc after constant temperature as a heat-sensitive reaction component, when the temperature of the main part of the product increases or decreases, the heat generated is transferred to the bimetallic disc, and the action temperature is set quickly when the action temperature is set, and the contact is broken through the mechanism.
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