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, multiply the output control voltage and current to get the output control power. The operating power of the controlled equipment must be less than the output control power of the thermostat. Otherwise, the thermostat will be damaged, and in serious cases, it will cause a fire!
2. Selection of input and output voltage of thermostat: some brands of thermostats support multi-voltage input central air conditioning thermostats, first of all, to ensure that the input voltage and allowable input voltage are consistent. Another point to be put forward is that some thermostats do not support DC on/off, or the DC voltage that can be turned on and off is small, so you should consult with the merchant clearly when buying a thermostat to avoid unnecessary trouble.
3. Requirements for the accuracy of the thermostat: When selecting the thermostat, the requirements for the accuracy of the thermostat should also be considered. At the same time, in the same space that is configured with central air conditioning, locate the thermostat position according to the requirements of air control, in order to achieve a thermostat to control a plurality of air conditioning fan coil units, a control box needs to be configured, the control box can be placed on the ceiling near the thermostat, and the maintenance port can be arranged at the position where the control box is placed for the convenience of maintenance.
By increasing the relay conversion in the control box to control the motor and pipeline solenoid valve of a plurality of fan coil units, when the thermostat starts the low gear, the fan coil unit and the solenoid valve pass the control box RH and RV conversion run at the same time, the same is true for the middle and high range, so as to achieve the purpose of controlling a plurality of fan coil units with a thermostat, in order to accurately sense the temperature in the space, the temperature sensing element is placed in the return air outlet in the center of the room, and is transmitted to the thermostat through the cable, and the current value of the relay in the controller is set according to the number of control fan coil units.
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How to set the parameters of the RCRS400 thermostat
1. Set temperature: Press the SET button to set or view the temperature set point. Press the SET key 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, press and hold the △ key or ▽ key The data will change rapidly, press the SET key again ...
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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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RKC Level Gauge - the principle of the selection of float level gauges
The float level gauge is widely used, mainly used in petroleum processing, food processing, chemical industry, water treatment, manufacturing, electric power, papermaking, metallurgy, ships and boilers and other industrial automation processes to measure and control the level.
1. Pay attention to the specific working conditions. As introduced ...
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RRKC thermostat - common faults and solutions of stand-alone thermostats
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 ...
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What are the precautions for the installation of the RKG thermostat?
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) Instrument complement ...
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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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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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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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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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RKC Level Gauge – Four mounting methods for buoy level gauges
1. The buoy level gauge is welded and installed under the guide wire
At the bottom of the container, determine the position according to the requirements of the movement direction of the level gauge buoy, and weld or rivet the support under the fixed guide wire.
2. Buoy level gauge ruler installation
1. The connecting part of the ruler should be flat.
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RKC converter - an introduction to the classification of converters
Analog-to-digital converters
The analog-to-digital converter comprises a first transmission circuit, which receives an input voltage and an output clock signal, which is phase-shifted, depending on the input voltage, and a second transmission circuit receives a reference voltage and an input clock signal, and outputs a reference clock signal, which ...
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RRC Thermostat – Instructions for use of smart thermostats
1. Turn on the power of the smart thermostat, and the current temperature is displayed on the display. Because the sensor is not in contact with other devices, but is exposed directly to the air, this is the current temperature: 31 degrees Celsius, which is not too hot.
2. At the bottom right of the display is the "Startup Temperature" setting.
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Introduction to the types of alarms for RKC thermostats
* 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 ...
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RKC Level Gauge – The correct way to use the float level gauge
(1) Before use, first check whether the level gauge is within the verification cycle, otherwise, it should be calibrated, and replaced in time if it is unqualified.
(2) The sensor should be installed horizontally, and the length of the lower entry should meet the technical requirements.
(3) The connection between the sensor and the explosion-proof junction box should be tightened and tightened.
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RKC Thermostat – What are the common faults of thermostats?
1. There is no manifestation when the power is on. For this kind of problem, first confirm whether the power supply is there and whether the power supply matches the power supply required by the thermostat, and then check whether the wiring is strong. The problem is still there, then it is the problem of the thermostat itself.
2. There is a manifestation, and the manipulation makes mistakes. The first thing to look at this kind of problem is to look at the control ...
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RKC Thermostat – How can a thermostat be broken?
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.
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Common faults in the use of RKC thermostat Pt100 RTD
PT100 RTD is a platinum RTD, which can be regarded as a more commonly used thermometer in the range of medium and low temperatures, and it has a wide range of uses, including medical, electric, industrial production, thermometers and other high-precision thermometers. But due to the range of use ...
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RK thermostat - common problems and solutions of electric floor heating stand-alone thermostat
Fault 1: The thermostat does not turn on (the screen does not display)
Analyze the causes
1. Wrong wiring;
2. The voltage of the input terminal is not enough or the input terminal is damaged by the empty leakage guarantee;
3. Whether the cable between the panel and the power board is broken or plugged incorrectly;
4. Load short circuit or broken ...
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Precautions for the selection of RRKC thermostats
The following points should be paid attention to in the selection of intelligent thermostats:
(1) Dimensions (panel size, length)
(2) Enter the sensor graduation number (according to the matching sensor), display accuracy, and display resolution
(3) What is the main output (selected according to the controller)
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RRKC thermostat wiring installation and some precautions
The rkc controller was developed by Japan and is mainly used in plastics and stoves. Of course, it is also widely used in China's industry, there are many people who do not know much about the rkc controller, and some even feel unfamiliar.
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