1) For RTD input, 3 wires with low resistance and no difference should be used.
2) The input signal line should be far away from the power line of the instrument. Power supply and load lines to prevent noise disturbances.
3) The power cord of the instrument is generally disturbed by the power supply.
4) When the instrument makes up for external noise disturbance, it is necessary to use noise filter.
5) Install a noise filter on the outer surface board and connect it to ground, and reduce the wiring distance between the output of the noise filter and the power terminal of the instrument.
6) Do not install a safe and open switch at the output end of the filter, which will reduce the effect of the filter.
7) After the power is turned on, it takes 5-6 seconds to prepare for the appearance of the relay output, such as when using the external connection loop and other signals, please use the delay relay at the same time.
8) This instrument does not have a power switch and a secure wire, if required, it can be installed to advocate the standard of the safe wire: additional voltage 250V additional current 1A Stable wire type: delay and stability.
9) Do not overtighten the terminal screws. In addition, suitable terminal screw lugs are used.
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RLC thermostat - common faults and treatment methods of dry-type transformer thermostats
1. There is no display of dry-type transformer thermostat
Cause of failure: (1) The power supply of the thermostat is not connected; (2) The fuse is blown out.
Solution: (1) Turn on the power supply; (2) Replace the fuse.
2. The dry-type transformer thermostat shows that one or three phases are flashing and displays "-OP-"
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RK thermostat - the problem that should be paid attention to in the installation of floor heating thermostat
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 ...
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RKC Level Gauge - Preservation and storage of float level gauges in daily use
1. To avoid damage to the instrument, pay attention to the correct protection method: in order to ensure the accuracy of the instrument and avoid damage to the instrument, try not to use the protection instrument of isolator or other isolation devices. If you have to do it, you should also pay attention to the careful selection, determine the isolation solution, and wash the isolation film correctly, ...
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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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RRC thermostat - introduction to the working principle and classification of electronic thermostats
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 ...
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RLC thermostat - a classification introduction of floor heating thermostats
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 ...
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Overview of the RLC thermostat
CH and CD series intelligent temperature controller is a multi-functional adjustment instrument with special microprocessing, which adopts switching power supply and surface mount technology (SMT), so the instrument is delicate and compact, and the performance is reliable. The unique self-diagnosis function, self-tuning function and intelligent control function make it possible for the operator to pass the ...
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RRKC thermostats – how are temperature controllers wired and commissioned?
1. Take out the room temperature controller, and then connect the power supply terminal of the temperature controller to the power supply according to the terminal diagram of the temperature control chart
2. Then take out the temperature sensor that comes with the temperature controller and detect it
3. According to the temperature controller terminal, the temperature sensor is connected to the controller's transmission.
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The debugging method of the temperature controller
Generally, there are three buttons to provide the need for setting, one is the Set button, press it once to enter the setting state. The other two offer upward and downward temperature adjustments, which can be adjusted to any temperature point. After adjusting to the desired temperature point, press the Set button again to confirm.
1. Turn on the smart thermostat ...
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RKC Level Gauge – How to properly use a plug-in float level gauge for level measurement
1. Select the appropriate level gauge
First of all, it is necessary to choose the appropriate level gauge. The following factors should be taken into account in the selection of a level gauge:
Measure the properties of the medium: e.g., temperature, pressure, viscosity, corrosiveness, etc.
Measuring range: i.e. the height range of the liquid ...
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RKC thermostat operation attention and its main features
RKC thermostat operation attention
· Clean the instrument only after the power is off;
· Please use a soft cloth or cotton paper to remove stains on the monitor;
· The display is easy to be scratched, it is forbidden to use hard object to operate the panel buttons, otherwise the keys will be damaged or scratched.
Key features:
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RLC thermostat - temperature controller control method classification and working principle
1. The temperature controller control method is generally divided into two types:
One is controlled by the temperature change of the cooled object, and the vapor pressure temperature controller is mostly used, and the other is controlled by the temperature difference change of the cooled object, and the electronic temperature controller is mostly used.
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RKC Temperature Control Meter - How to set the temperature control meter
1. Turn on the power supply of the smart thermostat, and the temperature displayed on the screen is the temperature at that time. Because the sensor is not in contact with other devices, but is directly exposed to the air clock, this is the current temperature: 31 degrees Celsius, which is not too hot.
2. At the bottom right of the display screen is the "starting temperature" setting ...
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RLC thermostats – the classification of thermostats and their detailed introduction
1. Sudden jump thermostat
The type of various sudden thermostats is collectively called KSD, such as KSD301, KSD302, etc., the thermostat is a new type of bimetal thermostat, mainly as a variety of electric heating products with overheat protection, generally connected with the thermal fuse in series, sudden temperature ...
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What should be paid attention to when installing RRKC thermostats - pop-up thermostats
1. The use environment of the sudden 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 of ≤ 90% and no contact with corrosive and flammable mediums. For use in wet environments or submerged liquids, the thermostat ...
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RKC converter – the control strategy of the converter
Direct transformation method
The direct conversion method is to synthesize the "output voltage" through the continuous chopping of the input voltage, which can be divided into coordinate transformation method, harmonic injection method, equivalent conductivity method and scalar method, although all these methods have certain advantages, but also have certain problems, ...
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How to set the parameters of the RKC fb900 thermostat
Model definition
FB90②③*④4⑤⑥⑦⑧⑨-0(
CODE 8N-4*4NN5/A1-F801/Y
control
"(1)(2)" indicates Output 1 and Output 2 classes
M: Relay output V: Voltage pulse output 5: 0-10V
8: 4-20mAN: No output
“ ...
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RK Thermostat - The working principle and device precautions of liquid expansion thermostat
How liquid expansion thermostats work
Liquid expansion thermostat is a physical phenomenon (volume change) that causes the material (generally liquid) in the temperature sensing part of the thermostat to undergo corresponding thermal expansion and cold contraction when the temperature of the controlled object changes, and the diaphragm box connected with the temperature sensing part expands or ...
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Analysis of common fault causes of RKC temperature controller
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 causes the solder joint to show a breakpoint, and sometimes it is caused by the phenomenon of virtual soldering at the factory.
2. Temperature controller ...
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RKC thermostat - how to set the parameters of 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 ...
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