Installation method and operation instructions of thermal gas mass flow meter

Abstract: The installation method and operation instructions of the thermal gas mass flow meter are provided by the excellent flow meter and flow meter manufacturers and quotation manufacturers. Thermal gas mass flow meters are instruments that measure fluid flow using the principle of heat conduction. The instrument uses the constant temperature difference method to accurately measure the gas flow. It has the advantages of small size, high degree of digitization, convenient installation and accurate measurement. Among them the sensor part. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the installation method and operation instructions of the thermal gas mass flowmeter. Thermal gas mass flow meters are instruments that measure fluid flow using the principle of heat conduction. The instrument uses the constant temperature difference method to accurately measure the gas flow. It has the advantages of small size, high degree of digitization, convenient installation and accurate measurement. The sensor part consists of two reference-grade platinum resistance temperature sensors. With a bridge loop, one sensor measures the fluid temperature and the other sensor maintains a constant temperature differential above the fluid temperature, allowing flow measurement under high temperature and high pressure conditions. Installation and Connection 1 Integral installation and connection requirements ● If the converter is installed outdoors, an instrument box should be installed to avoid rain and sunlight. ● It is forbidden to install in places with strong vibration, and it is forbidden to install in an environment with a large amount of corrosive gas . ●Do not share an AC power supply with equipment that pollutes the power supply such as inverters and electric welding machines. If necessary, install a purified power supply for the converter. ●The integrated plug-in type should be inserted into the axis of the pipeline to be measured, so the length of the measuring rod depends on the diameter of the pipeline to be measured, which should be specified when ordering. If it cannot be inserted into the axis of the pipe, the manufacturer will provide the calibration factor to complete the accurate measurement. ●Integrated pipe section type adopts flange connection, which conforms to the national standard GB/T9119－2000. 2 Wiring diagram ●I+ and Icom are 4－20mA output. Two-wire photoelectric isolation output, no external power supply DC24V, loop resistance less than 300Ω. 3 Installation ●Integrated plug-in installation The factory provides pipe connections and valves. For non-weldable pipes, pipe clamps are provided by the factory. For example, pipes can be welded. First weld the connector and the pipeline, then install the valve, drill holes with special tools, and finally install the instrument, as shown in the figure below. When maintaining the instrument, remove the instrument and close the valve, which will not affect the normal production. ●For pipe section installation, select the corresponding national standard flange to connect it, as shown in the figure below. ●When installing, pay attention to the signs marked on the instrument“Media flow direction marking”To be in the same direction as the actual flow of the gas. Operating Instructions 1 Function Keys OY series thermal gas mass flowmeter is displayed with 4 keys and 8-digit field plus 24-digit prompt. Instantaneous flow, cumulative flow, cumulative running time, current date and time can be displayed. The 4 keys are“MODE”,“CUS”,“UP”and“ENT”, its functions are as follows: ●“MODE”key. It is used to switch between parameter setting state and measurement display state. In the process of parameter setting (the cursor is at the input data position), the function of this key is to clear the current input value. ●“CUS”key. Move the cursor. ●“UP”key. Cyclic display of numbers. In the measurement state, the measurement menu can be displayed cyclically. ●“ENT”key. Enter data to confirm. In the measurement display state, press this key to multiply the displayed value by 1000 as the actual value. 2 Parameter setting method The instrument is powered on and enters the measurement state, press“MODE”key to enter the parameter setting, in the parameter setting state, the two digits on the left of the display screen display the menu number, and the right side displays 5 digits of data.“EN T”The key is used to confirm the modified parameter value, the cursor is the horizontal line below the number,“C US”keys are used to move the cursor. When a certain bit of data is entered,“UP”The keys are used to increment or decrement the number at the cursor (including the decimal point). In the parameter input state, if the cursor is at the menu number position, press“MODE”key to switch from the parameter input state to the measurement display state. In the measurement display state,“UP”The key can cycle to display instantaneous mass flow, instantaneous volume flow, cumulative mass flow, cumulative volume flow, and start-up running time. When debugging and running, the potential on the instrument will enter the measurement state. At this time, the data must be input according to the actual working conditions. Maintenance 1. When opening the case, be sure to turn off the power first. 2. When removing the sensor, pay attention to whether the pipeline pressure, temperature or gas is toxic. 3. The sensor is not sensitive to small amounts of dirt, but should also be cleaned regularly when used in a dirty environment. Otherwise, the measurement accuracy will be affected. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Installation Method and Operation Instructions of Thermal Gas Mass Flow Meter'

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