The large caliber prepaid intelligent water meter (for pipeline use) (DN32-DN300) of Toushi Huasheng Hongshun Instrument Co., Ltd. is a high-tech new product independently developed by our research institute and company, following the widespread promotion of household intelligent charging water meters, in response to the requirements of the majority of water company users. The product consists of three main parts: a signaling water meter, an automatic control valve, and an intelligent controller. In addition to measuring the water consumption of group users, it can also purchase water using IC cards, and automatically alarm and shut off valves and supply according to the purchase volume and actual usage of users. The product complies with GB/778-2007, CJ/T133-2007, and CJ266-2008 standards

Composition and characteristics:

Large caliber prepaid cold water meter (nominal diameter 32mm~300mm), hereinafter referred to as "large caliber prepaid water meter", is a device with a signaling device

The wet cold water meter for rotors with a nominal diameter of 32mm to 300mm (mainly for horizontal detachable spiral wing communication meters above 65) is used as the measuring base meter, with a radio frequency card

A water metering instrument with settlement function composed of a control box and an electric control valve installed as an information carrier.

Large caliber prepaid water meters use lithium batteries, which do not require an external power source and have low power consumption. The internal lithium battery can be used for more than three years under normal circumstances, without being limited by installation conditions. There are two types of water meters: small body and large body. The small body design can save installation space and other features. This product is compatible with our small caliber prepaid water meter system and easy to manage.

Technical parameters:

The base table complies with the relevant provisions of GB/T 778.

1. Measurement characteristics

◇ Maximum allowable error: from including the minimum flow to excluding the boundary flow in the low zone: ± 5%; From including boundary flow to high zone including overload flow ± 2%

Measurement level: Level 1 or Level 2

2. General parameters

◇ Pressure loss: When overloaded, the pressure loss of the water meter shall not exceed 0.1MPa

The measured water temperature ranges from 0 ℃ to 30 ℃

The maximum allowable working pressure (MAP) shall not exceed 1MPa

◇ Working voltage: 3.6V

Valve opening and closing times:>2000 times

◇ Backup battery for control box: lithium battery

Product caliber and main technical parameters: