Input: all kinds of thermocouple (TC), RTD standard current and voltage signals (see input type table); Basic error: 0.5% of the input full-scale ±±1 word; Resolution: 1°C, 0.1°C; Sampling period: 3 times/sec Alarm function: ...

CH102 (48×48×100mm) CH402 (48×96×100mm) CH902 (96×96×100mm) 1. RH400 size: 48*96, depth 60, about 250g 1. Thermocouples: K, J, R, S, B, E, N, T, W5RE/W6RE, PL‖, U, L ...

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.

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 The instrument returns to normal working condition ...

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 ...

1. Thermostat contact contact failure Poor contact of the thermostat contacts will cause the compressor to not operate properly. If the contacts are sticky, the compressor will fail without downtime. For this, you can use a small screwdriver to open the metal shell of the thermostat, and then use a fine abrasive cloth to polish the surface of the contacts ...

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.

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. Power conversion: convert the voltage (rated 100V) and current (rated 5A or 1A) of the transformer into voltage (several volts) to meet the requirements of weak current components. 2. Isolation: current, secondary side security, and work grounding are used to ensure the safety of people and equipment, while weak current ...

　　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 ...

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, ...

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: ...

In the design of power converter, firstly, the circuit topology is determined according to the load requirements, and the composition and backup mode of the power converter are determined, and the main parameters of the power converter are input voltage range, output voltage accuracy, load stability, voltage stability, output ripple, efficiency and dynamic.

The correct selection of the level gauge can ensure the better use of the level gauge. What kind of level gauge should be selected according to the physical and chemical properties of the fluid medium to be measured? What is the diameter of the level gauge, the flow range, the lining material, the electrode material, and the output current? can adapt to the ...

Measuring principle with hydrostatic pressure: When the level transmitter is placed at a certain depth in the liquid to be measured, the pressure on the welcome surface of the sensor is formulated as: Ρ = ρ .g.H + Po where: P: The pressure on the fluid surface of the transmitter ρ: the density of the liquid to be measured g ...

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:...

(1) For the indicator, also known as the display panel, the indicator plays the role of local display, convenient for long-distance observation of the actual situation of the liquid level, the indicator is generally bundled with the pontoon, easy to install. (2) It is a magnetic float, which is located in the pontoon and is in direct contact with the liquid to be measured, ...

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.

1. Classification of pontoon level gauges The pontoon level gauge is also divided into two types: inner pontoon and outer pontoon, the so-called internal and external division refers to the place where the pontoon is installed, in the container of the liquid to be measured is the inner pontoon, and the outer pontoon is called the outer pontoon outside the liquid container to be measured.

1. There is no liquid level display or lower liquid level display When the sewage is discharged, only a small amount of condensate flows out, and it is judged that the pontoon is blocked. Treatment: Dismantle the outer pontoon and find that the pontoon is almost filled with dirt and impurities. Clean, calibrate, and return to normal. 2. The liquid level display is ...

When transporting and unpacking, it is necessary to avoid excessive shock and vibration; The installation should be firm and reliable, and the pontoon should be installed vertically to prevent the pontoon from colliding with the interior wall of the pontoon; When the pontoon is hooked, it should not swing or pull and compress sharply, so as not to damage the sensor and reduce the accuracy of the instrument; ...