Prepaid function:
This series of products are in the form of prepaid gas volume. Users must buy gas first and then use gas. When the user card with gas volume is inserted into the table, the words of this purchase volume and valve opening will be displayed. The electric control valve will be opened to start gas supply, and the available margin will be displayed all the time.
◎ alarm function:
The user can preset the alarm gas volume (0-99 cubic meters) when opening an account. When using gas, the intelligent module will decrease the count. When the remaining gas volume in the meter is equal to the alarm gas volume, the buzzer will sound once to remind the user to purchase gas. At the same time, there are Chinese characters on the screen to show that the margin is insufficient. In the future, the alarm will be given once every 1 cubic meter is reduced.
◎ air shutoff function:
When the remaining gas volume in the gas meter is 0, the gas meter will automatically close the valve and cut off the gas supply until the gas volume valid user card is inserted.
◎ cumulative metering function:
When the user inserts the user card into the table, the cumulative gas consumption can be displayed for user query.
◎ confidentiality function
When a user card other than this table is inserted into this table, a misoperation is displayed, and this operation is invalid.
◎ anti interference function
Strong anti-interference function, which can effectively prevent external interference.
◎ Chinese character LCD display is adopted, and the display content is intuitive.
◎ with pulse output interface, centralized meter reading can be realized.
◎ accuracy grade: 1.5
◎ power supply voltage 3.6V ± 15%; Static working current ＜ 15ua; Battery life; 6 years
◎ Chinese character display: Canary trademark, purchase quantity, available margin, accumulated consumption, quick change battery, insufficient margin, misoperation, valve opening and valve closing
◎ LCD display range: 00000.00-99999.99
◎ IC card service life ≥ 100000 times; The service life of the electric control valve shall be ≥ 5000 times, and the leakage shall meet the requirements
◎ working temperature -10 ℃ - +50 ℃, storage temperature -20 ℃ - +60 ℃; Humidity ≤ 85%
◎ explosion proof performance
This product has passed the strict test of the "national explosion proof electrical product quality supervision and inspection center" and obtained the "explosion proof certificate".
◎ this product should be installed indoors. Rain proof, sun protection and other measures should be taken when using outdoors to avoid installation in an environment with corrosive and turbid gas. It is required to be installed vertically, and the air flow direction should be consistent with the arrow direction.
◎ after the installation, the gas meter is in the valve closed state, and the new meter can only be purchased and opened at the designated place through the gas company: open the valve for gas supply after the gas meter enters the effective gas volume through the user card.
◎ insert the purchased gas user card into the gas meter in the direction of the arrow, and hear a beep. At this time, the LCD on the meter displays the current user card purchase amount, and displays the cumulative consumption after about 1 second. Finally, the available margin is always displayed. At this time, the data in the card has been read out by the gas meter. Open the valve to supply gas. The user card should be properly stored after use. It should not be inserted into the card holder for storage. The card should be used for the next gas purchase.
◎ when the user uses gas for a period of time, and the available margin of the LCD on the meter is reduced to a certain amount (e.g. 8 cubic meters, which can be set between 0-99 cubic meters when the user opens an account), the LCD margin is insufficient, and a "beep" sound is sent to remind the user to purchase gas as soon as possible. In the future, the sound will sound once every 1 cubic meter of gas volume is reduced. When it is reduced to the minimum limit of 2 liters, it can be set when leaving the factory according to the customer's requirements), close the valve and cut off the gas, Remind the user to buy gas quickly again. At this time, insert the user card, the valve will open, and the user can continue to use gas to zero. It is recommended that the user do not use zero.