NB remote transmission electromagnetic water meter is a measuring instrument specially designed for water supply enterprises, in accordance with the GB/T778-2018 new water meter standard. NB intelligent electromagnetic water meter ensures that the water meter can be used in highly polluted and corrosive environments, with a battery powered electromagnetic water meter that has extremely high sensitivity.

characteristic

1. The electromagnetic water meter adopts electromagnetic flow sensing technology and Faraday’s law of electromagnetic induction.
2. The electromagnetic water meter converter has low power consumption, excitation, and adopts sealed technology.
3. The electromagnetic water meter has good linearity and a large range ratio.
4. The electromagnetic water meter has high accuracy (level 1).
5. Electromagnetic water meters have no flow blocking components and low pressure loss.
6. The electromagnetic water meter adopts bidirectional measurement.
7. Adopting 304 stainless steel sensors with waterproof, anti electromagnetic interference, and anti-corrosion functions.
8. It has an IP68 protection level and can work normally after prolonged immersion in water.
9. RS485 acquisition function of low-power remote measurement and control terminal: The terminal has an RS485 communication interface, which supports standard MODBUS-RTU and CJ-188 protocol for instrument data acquisition, and is compatible with mainstream international and domestic flow instrument protocol data acquisition.
10. Micro power remote measurement and control terminal pulse acquisition function: The terminal supports single, double, and triple pulse signal acquisition for pulse mechanical meters, compatible with Hall signal and reed switch signal acquisition, and has forward and reverse measurement functions.
11. Analog signal acquisition: The terminal has two analog signal acquisition interfaces, one for voltage signal acquisition, compatible with 0-5V, 0.5-4.5V, 1-5V, and one for current signal acquisition, compatible with 4-20mA and 0-20mA.
12. Data storage function: The freezing time interval of the terminal can be set, and 1000 data can be frozen and stored. The system can remotely read the historical data of the RTU.
13. Data self reporting function: The terminal can set the automatic data reporting interval and report the unreported data within 3 days on a scheduled basis.
14. Bluetooth debugging function: The terminal is equipped with an RTU communication module, which can be configured and debugged using a mobile app.
15. Remote upgrade function: The terminal has a remote upgrade function, and through wireless network, the RTU program can be upgraded over the air for easy maintenance.

technical parameter

Nominal diameter: DN25-DN800

Nominal pressure: 1.6Mpa (special pressure can be customized)

Measurement range: 0.001~12m/s

Measurement medium (conductivity): 50μs/cm

Measurement direction: capable of measuring bidirectional flow

Medium temperature: 0 ℃~+50 ℃

Environmental temperature:- 20℃~+60℃

Environmental humidity: ≤ 95% (relative humidity)

Power supply method: 3.6V/DC built-in lithium battery power supply, continuous working time exceeding 5+1 years

Electrode material: 316L stainless steel HC、HB、 Titanium, tantalum, platinum/iridium alloys are optional

Lining materials: Polychloroprene rubber, Polyurethane rubber PTFE…

Connection method: flange type

Structural form: Split type

Protection level: IP68

Diagnostic and alarm performance: Empt： Sensor air traffic control
Pls： Pulse output frequency exceeds the set upper frequency limit
AD-Hi： The sensor signal is greater than the upper limit of system AD sampling
Rng： The current instantaneous traffic exceeds the user set traffic limit
Rng-Hi: The range set by the user exceeds the upper limit of AD sampling in the system
Pls-Hi： The range set by the user exceeds the upper limit of pulse output

Display and control:
Three line display, with the first line showing a 12 digit (integer plus decimal) cumulative flow rate that meets the long-term usage needs of major water customers. The second and third rows respectively display 5-digit instantaneous flow rate and 5-digit instantaneous flow rate, with manually adjustable decimal places. On the left side, there is also a battery level display and fault diagnosis alarm to ensure that instrument faults can be detected and eliminated in a timely manner. Can display pressure values.

Signal output:
Wireless remote transmission: integrated NB-IOT or external GPRS wireless backpack remote transmission output, data packaged and sent
Digital signal: MODBUS RTU serial interface, up to 32 device stations, RS485 communication