Product Description
Product Overview
The small-diameter photoelectric direct-reading remote transmission water meter is mainly divided into the measurement device of the traditional mechanical water meter and the electronic decoding device. It is a magnetic transmission dry-type photoelectric direct-reading smart water meter. It is used for measuring cold water and hot water. It cannot be used for measuring sewage. As well as corrosive liquids, this series of water meters is equipped with a direct-reading remote transmission module, which uses photoelectric direct-reading meter reading technology to directly read the current character wheel indication.
Product features
- Using 5 pairs of infrared invisible light LEDs, using the principle of photoelectric contrast, to directly read the character wheel data without software carry;
- Range ratio R=125 (80/100 on the market);
- The water meter side adopts lightning protection to effectively prevent induction lightning from damaging the water meter through the bus;
- Adopting nano-protection technology, the circuit board is submersible-grade waterproof, moisture-proof, and anti-corrosion, which solves the waterproof problem of dry watches;
- Adopting adaptive protocol technology, the same watch is compatible with CJ188-2004, DLT/645, and Xingyuan internal protocols.
- Using ultra-low power consumption design, the measured quiescent current is
- The use of special materials completely solves the problem of fogging of the transparent cover of dry watches.
- IP68 waterproof design.
Usage environment
Temperature grade: T30
Pressure level: MAP1.0
Traffic parameters
| Caliber DNmm |
Measuring range Q3/Q1 |
Overload flow Q4m3/h |
Common traffic Q3 |
Boundary traffic Q2L/h |
Minimum flow Q1 |
Start traffic |
Minimum reading m3 |
Maximum reading |
| 15 |
100 |
3.125 |
2.5 |
40 |
25 |
10 |
0.00005 |
99999 |
| 125 |
32 |
20 |
| 20 |
100 |
5 |
4 |
64 |
40 |
12 |
| 125 |
52 |
32 |
Electronic technical parameters
| Communication |
RS - 485 |
M - BUS |
| Operating voltage |
DC7.5-18 V |
Empty number: bus voltage is greater than 12V
Passing a signal: The bus voltage is 10V higher than when the signal is empty, and less than 42V. |
| quiescent current |
<1mA |
<1.3mA |
| Communication transmission rate |
2400 B/S |
2400 B/S |
| Water meter and system bus connection method |
|
Red Blue Yellow Black |
Power supply (+) RS485 B- RS485A+ Ground wire (GND) |
Stepless, no need to adjust the color of the line |
