NB-IOT large-diameter IoT photoelectric water meter

NB-IOT large-diameter IoT photoelectric water meter

By adopting a vertical spiral wing measuring structure and photoelectric direct reading technology to read the data of the character wheel, the reading error can be reduced to zero; The NB-IOT wireless module group built into the water meter is combined with optoelectronic direct reading acquisition technology, and data is transmitted and received through COAP or UDP methods. The information is uploaded to the water management platform through the narrowband IoT NB-IOT base station of the cellular network, and the management and analysis of water use information for unit users' sub meters or total meters are carried out.

NB-IOT large-diameter IoT photoelectric water meterpurpose
It is used to measure the total amount of water flowing through domestic tap water, hot water, and direct drinking water, and has intelligent charging and management functions. The product is suitable for water metering in situations with large flow changes.
Product Features
A reading *: The photoelectric direct reading technology is used to read the character wheel data, and the data read at any time is consistent with the mechanical character wheel reading of the water meter, with no cumulative error.
B has strong anti-interference ability: it has no magnetic components and is not affected by magnetic substances. When encountering strong light interference during copying operations, it has a built-in shielding function to ensure accurate readings.
C has a long service life: it adopts photoelectric direct reading technology for sampling, without mechanical contact or action, and is not affected by external factors that may cause malfunctions.
Safe use: The data stream directly reaches the platform service terminal through the operator's base station without any other intermediate networks.
E-network coverage is wide: In the same frequency band, NB-IOT has a gain of 20dB compared to existing networks, and the coverage area is expanded by 100 times.
Strong connectivity capability: NB-IOT can support 100000 connections per sector, with low latency sensitivity, ultra-low device cost, low device power consumption, and optimized network architecture; Watches have stronger network attachment capabilities.
Lower power consumption: The standby time of NB-IOT terminal modules can last up to 10 years; NB-IOT wireless photoelectric direct reading intelligent remote water meter has lower power consumption and longer battery life compared to similar IoT water meters
Low battery warning: The usage information of the independently packaged power supply battery is displayed on the service platform. The messaging module and the base meter are installed separately.
design standards
GB/T778-2007 "Measurement of Water Flow in Closed Pipes with Full Pipes - Drinking Cold Water Meter and Hot Water Meter"
CJ/T224-2012 "Electronic Remote Water Meter"
CJ/T383-2011 "Electronic Direct Reading Water Meter"
JJG162-2009 "Verification Regulations for Cold Water Meters"
Rated working conditions
Flow range: Q1-Q3
Environmental temperature: 5 ° C-55 ° C
Environmental humidity: (0~100)% RH
Water temperature: cold water T30 ° C, hot water T90 ° C
Water pressure: ≤ 1.0MPa
Water quality: tap water, direct drinking water, domestic hot water
Working power supply: 2.4V-4.2V (Tye: 3.6V)
Working frequency: B1, B3, B5B8, B20, B28
(See Appendix 1 for detailed explanation of Band)

Product Technical Parameters

flow parameters

Note: Range ratio R=80/100/125/160. For detailed technical parameters, please call for consultation.

Maximum allowable error
A. The maximum allowable error in the low zone, including the minimum flow rate (Q1) and excluding the boundary flow rate, is ± 5%
B. The maximum allowable difference in the high zone, including the boundary flow (Q2) and overload flow (Q4), is ± 2% (± 2% for water temperature ≤ 30 ° C and ± 3% for water temperature>30 ° C)

Appearance and installation dimensions

Flow error and loss curve