Photoelectric direct reading wired remote water meter, photoelectric remote water meter, this series of products can be used to measure the amount of water flowing through the tap water pipeline of a household or a residential unit. Its working mode is completely reliable, with strong anti-interference ability, and the meter reading system is energy-saving and durable. The automatic meter reading system is a new remote control and billing management system designed for the water supply department. This system is divided into three layers: meters, concentrators, and terminal processors (management center). use
The communication method of MBUS bus, combined with GPRS for remote reading, realizes the automation and intelligence of water meter charging management.
System diagram of photoelectric direct reading water meter
The photoelectric direct reading water meter system consists of a meter, a concentrator (capable of managing and reading 64 water meters), a computer system, and an MBUS meter reading network that does not differentiate polarity.
Performance characteristics:
1. Completely solve the phenomenon of encoding errors during character wheel carry;
2. Daily work does not require power supply, only power supply during meter reading, avoiding measurement errors and extensive maintenance work caused by unstable, unreliable or faulty power supply;
3. Automatically memorize the position of the code wheel. Not pulse accumulation metering, no initialization required;
4. Digital transmission. The terminal processor can automatically verify the digits and perform error code judgment. If an error code occurs, the water meter can be requested to resend. If the error persists after multiple verifications, it will automatically prompt. So it can achieve stable, accurate, and reliable measurement in complex usage environments;
5. The mechanical reading and electronic reading remain completely consistent. There is no inconsistency in mechanical and electrical readings caused by cumulative errors or water meter reversals;
6. The sensor is non-magnetic and non-contact. There is no situation where external magnetic interference causes inaccurate readings, and the electronic reading device does not affect the measurement accuracy of the original instrument.
Main parameters:
Temperature rating of water meter: T30, T50, T70, T90
Pressure level: Map10
Pressure loss level: △ P63
Upstream flow field sensitivity level: U5
Maximum allowable error:
a) The maximum allowable error in the low zone (Q1 ≤ Q ＜ Q2) is ± 5%
b) When the water temperature is ≤ 30 ℃, the maximum allowable error in the high zone (Q2 ≤ Q ＜ Q4) is ± 2%
When the water temperature is ≥ 30 ℃, the maximum allowable error in the high zone (Q2 ≤ Q ＜ Q4) is ± 3%
Electronic technology indicators:
Bus power supply: external DC 6.5V~18V
Working current: ≤ 5mA
Communication interface: MBUS interface
External power supply: 5-18V
Note:
1. The technical parameters of this product comply with the national standard GB/T778.1~3-2007 (ISO4064-1~3:2005 IDT). The electronic device complies with the standard of "Electronic Remote Water Meter" (CJ/T224-2006). The transmission method is MBUS bus transmission.