◆ Product Overview

　　The timed cooling gauge isAn intelligent charging system for the cooling industry, consisting of an IC card system and an air conditioning valve. The user pays the air conditioning fee to the management department, which writes the purchased cooling capacity value (i.e. cooling time) into the IC card. The user inputs the information in the IC card into the cooling capacity meter, which automatically opens the valve for cooling. During the process of users enjoying air conditioning, the microcomputer in the cooling capacity meter automatically reduces the remaining time in the meter according to the cooling time. When the purchased air conditioning time is exhausted, the cooling capacity meter automatically closes the valve to stop cooling. Users need to purchase air conditioning again before opening the valve again for cooling.
This system allows users to pay air conditioning fees according to their own wishes to the maximum extent possible, specifically reflected in how long they use the air conditioning and pay the corresponding air conditioning fees. Developers can fundamentally solve the common social problem of overdue air conditioning fees.
◆ Functional Features
1.Overdue cooling function
2. LCD display function
3. Users can pay and recharge at any time
4. The start and end times of the cooling season and the current time can be manually set, which is convenient, flexible, and suitable for various regions
During the cooling period, users can stop cooling at any time (the system will not charge at this time), or resume cooling at any time
6. The balance can be accumulated to the next cooling season
7. One card technology, which can share one card with Xintian brand water meters, electricity meters, and gas meters
8. When there is less remaining time (72 hours), close the valve and trigger an alarm to remind the user to recharge
9. Low voltage closing valve alarm
10. Timed on-off valve (512 hours) to prevent valve scaling
11. Ultra low power consumption, static working current<10 μ A, long-lasting battery life, can be used for more than eight years

◆ Billing Instructions
　　The timed cooling meter system can automatically identify whether the purchased time has been used up based on the corresponding air conditioning fee paid by the user using the air conditioning. It also has an advance notification function. When the user's pre stored air conditioning fee is exhausted, the valve will automatically close and they need to recharge before they can supply cooling again.
The system only charges when the user opens the valve for cooling during the cooling period. During the cooling period, the user closes the valve to suspend cooling or during non cooling periods, the system will not charge.
Accurate measurement, system billing accurate to the minute. For every minute of cooling provided by the user, the system deducts one minute of purchasing cooling time accordingly.

◆ Technical parameters

Flow range	Nominal diameter	Common traffic	maximum flow
	15	1500L/h	3000L/h
	20	2500L/h	5000L/h
	25	3500L/h	7000L/h
LCD display number of digits	8 digits
Quiescent current	<10μA
Battery life	>8 years
Remaining time alarm value	72 hours
pressure resistance	2.5Mpa