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| Categories | Lora Smart Meter | 
|---|---|
| Brand Name: | Radarking | 
| Model Number: | SKZS | 
| Certification: | CE, CCC, ISO9001, ISO14001, ISO4064 | 
| Place of Origin: | China | 
| MOQ: | 100 pcs | 
| Price: | Negotiate | 
| Payment Terms: | L/C, T/T, Western Union | 
| Supply Ability: | 6000000 pcs/year | 
| Delivery Time: | 15-20 working days | 
| Packaging Details: | Standard Packing in Carton | 
| Communication: | Lora-RF | 
| Power Source: | Build In Battery | 
| Protection: | IP67 | 
| Display: | LCD | 
| Weight: | 1300G | 
| Dimension: | 165X85X111mm | 
| Working Pressure:: | ≤1MPa | 
| Bandwidth: | 64kHz | 
Wireless Lora Smart Meter DN15/20/25 Smart Water Meter Remote Meter Reading
Meter Summary:
This wireless remote water meter use LoRa modulation technology and
through wireless to transmit and receive data, is a kind of
wireless module with ultra-small, ultra-low power consumption,
superior performance and ultra-long distance transmission.Module RF
chip based on Speed Spectrum and Hopping Frequency technology, with
features of high anti-interference and high reliability. So on the
aspect of stability, anti-interference ability and also receiving
sensitivity are all far beyond the existing GFSK modulation module.
Which can solve the problems of balance the distance, interference
with power consumption from traditional design project, to meet the
requirments on long-distance transmission and high reliability.
Structure and Working Theory:
Inside the counter of water meter (mechanical part), there is one
magnet embedded under the wheel pointer for 0.01 m3 of water and
two reed switches beside each side of the wheel. Each time the
pointer goes a circle, one group of two pulses is generated to
represent 0.01 m3 of water being calculated. The pulses are
converted to digital signals and recorded as metering data based on
pre-set program. Then the metering data can be transmitted to a
concentrator or hand-held unit.
Product Features:
Mainly applicable to new construction projects, or reconstruction
projects for old residential area which are inconvenient for wiring
deployment.
Wireless transmission technology is applied to realize out-door
meter reading, which simplified system installation by avoiding
wiring deployment.
The wireless transmission distance for hand-held unit is over 200
meters in open field.
Friendly user interface for management software of background
platform. Variety of formats for data output and customized link
with billing system according to customers'needs.
Total volume calculation of water flowing across the pipe and
wireless meter reading.
Remote valve-control to solve arrearage problem.
Three-level automatic routing to increase transmission distance.
Real-time meter reading to realize ladder-type pricing.
Fully anti-water design, functional under the water.
ERFCU design, ultra-low power consumption.
WOR remote awaking technology to reduce power consumption.
Wamr Net routing protocol to ensure data security.
High speed transmission, data reading for single meter within 1.5
seconds.
Simple and practical structure with removable battery.
Maximum Permissible Error:
From minimum flux inclusive up to transitional flux: ±5%
From transitional flux up to maximum flux both inclusive: ±2% (cold
water meter)
From transitional flux up to maximum flux both inclusive: ±3% (hot
water meter)
| Model | Nominal Diameter | Metering Grade | Common Flux | Transitional Flux | Minimum Flux | Minimum Reading | Maximum Reading | 
| mm | m 3 /h | m 3 | |||||
| 15(cold) | 15 | B | 1.5 | 0.12 | 0.03 | 0.0001 | 99999.999 | 
| 20(cold) | 20 | B | 2.5 | 0.2 | 0.05 | 0.0001 | 99999.999 | 
| 25(cold) | 25 | B | 3.5 | 0.28 | 0.07 | 0.0001 | 99999.999 | 
| 15(hot) | 15 | A | 1.5 | 0.15 | 0.06 | 0.0001 | 99999.999 | 
| 20(hot) | 20 | A | 2.5 | 0.25 | 0.10 | 0.0001 | 99999.999 | 
| 25(hot) | 25 | A | 3.5 | 0.35 | 0.14 | 0.0001 | 99999.999 | 
Specifications:
| Nominal Size | DN | mm | In-Line | ||
| 15 | 20 | 25 | |||
| Maximum flow rate | Q4 | m3/h | 3.125 | 5.0 | 7.875 | 
| Ratio “R” | Q3/Q1 | 80 | 80 | 80 | |
| Permanent l flow rate | Q33 | m3/h | 2.5 | 4.0 | 6.3 | 
| Transitional flow rate | Q22 | 0.05 | 0.08 | 0.126 | |
| Minimum flow rate | Q11 | 0.031 | 0.05 | 0.0787 | |
| Minimum reading | m3 | 0.0005 | |||
| Maximum reading | 99999 | ||||
Maximum Permission Error (MPE)
Q1≦Q≦,Q2 MPE =+ 5% Q2≦Q≦Q4, MPE= + 2% (For hot water metering,
MPE=+ 3%)
Dimensions and diagram
| Nominal size | Length | Width | Height | Thread | 
| mm | D | |||
| 15 | 165 | 101 | 124 | G3/4B | 
| 20 | 195 | 101 | 124 | G1B | 
| 25 | 225 | 101 | 124 | G5/4B | 

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