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Digital Water Flow Meter 2 Inch: Commercial Inline Smart Telemetry Sensors
Quick Answer
A 2-inch digital water flow meter with inline smart telemetry gives you live flow data straight to your phone or PLC. Silver Automation Instruments supplies DN50 electromagnetic and ultrasonic flow meters with built-in 4G, NB-IoT, or LoRaWAN telemetry for commercial water, irrigation, and cooling tower lines. Send us your max flow rate (m³/h), pipe material, and pressure (bar). We will return a quote with sensor type, telemetry protocol, and total price within 24 hours.
Why Choose a 2 Inch Flow Meter With Built-In Telemetry
Many commercial buildings and small water treatment plants still send someone to check a mechanical meter once a day. That data gap causes delayed leak detection and hours of unbilled water. A DN50 smart flow meter with telemetry removes the manual walk. It pushes flow total, instantaneous rate, and alarms to a cloud dashboard or SCADA every few minutes. You spot a pipe burst at 3 a.m. while you are at home. No patrol, no guesswork.
Silver Instruments builds this sensor for field people, not just IT teams. You do not need a separate RTU box, extra wiring, or a solar panel setup. The telemetry module sits inside the transmitter housing, IP67 rated. One cable for power. That is it. We have shipped hundreds of these to property developers in Malaysia, cooling tower operators in Saudi Arabia, and district metering projects in Brazil.
What Sensor Technology Works Best at 2 Inch
For a 50 mm pipe, two flow technologies cover 90% of clean water applications. Electromagnetic flow meters work on conductive liquids and have no moving parts. They handle 0.2 m/s to 15 m/s velocities with ±0.5% of rate accuracy. The lining can be hard rubber for water or PTFE for chemicals. Ultrasonic transit-time clamp-on meters are the second option, preferred when you cannot cut the pipe. A DN50 clamp-on sensor straps outside in 15 minutes and provides ±1.0% accuracy on clean water with low solids.
Here is the thing. Inline magmeters are still more accurate and cost less over the long run in new installations. We often recommend the Silver AMF900 series electromagnetic flow meter for 2-inch lines. It comes with G2 threaded, flanged, or tri-clamp process connections. The transmitter supports Modbus RTU, 4-20 mA, and pulse output as standard. Add the telemetry module and you get all three outputs plus LTE-M data push.
Smart Telemetry Sensors: How the Data Moves
Most engineers skip the communication layer when they spec a meter. Then the project stalls because the site has no WiFi and the 4G signal is weak inside a concrete meter pit. We learned this from a resort in Phuket. They ordered ten flow meters with WiFi telemetry. The metal lids killed the signal. We replaced the modules with LoRaWAN ones that used a gateway on the roof. Data came alive.
Silver Instruments offers three telemetry types on 2-inch digital water meters. NB-IoT works on LTE cellular bands and suits urban utility billing in Bangkok, Nairobi, and Lima. LoRaWAN suits large campuses, agricultural zones, and remote tank farms where you run your own gateway. 4G Cat-1 modules provide higher data rates for sampling every 10 seconds, ideal for leak detection algorithms. All modules push data to MQTT brokers, your own server, or platforms like ThingsBoard and AWS IoT.
Installation on a DN50 Line: What Matters in the Field
A 2-inch pipe sounds small, but installation mistakes are common. The magmeter needs a straight run of 5x DN upstream and 3x DN downstream from any elbow, pump, or valve. That means 250 mm upstream and 150 mm downstream. We see installers put the meter right after a partially closed butterfly valve. The flow profile gets distorted. The meter reads 15% low. You can avoid this by ordering the meter with a built-in flow straightener or simply moving the position.
For clamp-on ultrasonic sensors on 2-inch steel or PVC pipes, surface preparation decides repeatability. Remove paint, rust, and scale down to bare metal. Use the coupling gel we include in the box. Apply it thick, no air bubbles. Strap tension must be even. If the pipe is old galvanized steel with internal scaling, ultrasonic signals scatter. In that case, choose the inline magmeter.
Power options matter because a 2-inch meter often sits far from a panel. Our telemetry-enabled meters accept 10-30 VDC or battery packs that last 3 years with 15-minute reporting intervals. A water district in Ghana ordered 25 battery-powered DN50 magmeters with NB-IoT for their non-revenue water project. They installed them in roadside pits, no solar panels, no trenching for power. The SIM cards roam on local MNO networks. Da
Typical Applications and Country-Specific Use Cases
Commercial buildings use 2-inch flow meters on the main incoming line from the municipal supply. A property manager in Sydney monitors total consumption across three towers with one DN50 meter per tower. They set a daily threshold alarm. If flow exceeds 120% of the 30-day average, the system sends a WhatsApp alert through our cloud bridge. The maintenance team finds a stuck float valve in a toilet before the water bill spikes.
Cooling tower make-up lines run on 2-inch pipes in medium-sized HVAC systems. A facilities engineer in Doha tracks make-up water versus blowdown with two DN50 magmeters. The telemetry module sends Modbus registers over 4G to the BMS. When the cycles of concentration drift, the chemical dosing adjusts automatically. Water savings of 18% reported after six months.
Irrigation blocks for landscape and small farms use 2-inch lines. A citrus grower in Chile installed Silver ultrasonic flow meters with LoRaWAN on their drip irrigation header. The agronomist checks soil moisture and flow rate on the same dashboard. When flow drops, a clogged filter is the cause 80% of the time. They clean it before crop stress shows.
Silver Instruments AMF900 Series Specifications for DN50
Let me give you the hard numbers. Pipe size DN50 (2 inch). Flow range 0.5 to 80 m³/h depending on velocity. Accuracy ±0.5% of rate for velocity above 0.5 m/s. Liner materials: hard rubber (NR), PTFE, PFA. Electrodes: 316L, Hastelloy C, or titanium for seawater. Process connections: DIN PN16 flange, ANSI 150 lb flange, or BSP/NPT threaded. Ingress protection: IP67 standard, IP68 option for submerged pits. Output: 4-20 mA HART, pulse, RS485 Modbus. Power: 10-30 VDC or lithium battery pack. Telemetry: NB-IoT, Cat-M1, LoRaWAN, or 4G. Media temperature: -20 °C to 80 °C for rubber liner, up to 150 °C for PTFE. Ambient temperature: -25 °C to 60 °C.
We pre-configure every meter to your parameters before shipping. You tell us pipe schedule, flow direction, units (m³, liters, gallons), and alarm setpoints. We set the K-factor, totalizer unit, damping, and telemetry reporting rate. You unbox, bolt, power on, and data appears.
Price, Lead Time, and How to Order
A 2-inch digital water flow meter with smart telemetry usually costs between USD 750 and USD 1,600 ex-works, depending on liner, telemetry type, and certification needs. Electromagnetic models sit at the lower end of that range. Ultrasonic clamp-on sets are slightly higher due to transducer cost. Lead time is 5 to 12 working days for standard configurations. Express shipping to Mexico, Vietnam, UAE, and Nigeria takes 3 to 5 days by air.
Do this to get a firm quote today. Send an email to [email protected] with the subject line: DN50 smart flow meter quote. Include your pipe material (steel, PVC, HDPE), fluid type, conductivity if known, max flow rate, pressure (bar), temperature (°C), and preferred telemetry (NB-IoT, LoRaWAN, 4G). Add your WhatsApp number if you want faster replies. You can also call us at +86-135-1213-1526 or message on WeChat: +86 13512131526. Our engineers answer within a few hours during Beijing time.
FAQ
Can I use the AMF900 on a 2-inch pipe with low conductivity water like RO permeate?
Yes, but you must specify the PTFE liner and tantalum or platinum electrodes. Standard electrodes fail below 20 µS/cm. With the right electrodes, the meter reads accurately down to 1 µS/cm.
Does the telemetry module work with my existing SCADA or only your cloud?
It works with any system that speaks Modbus TCP or MQTT. We provide the JSON payload structure. You can pull data into Ignition, WinCC, or a custom Node-RED flow. No vendor lock-in.
What happens when cellular signal drops in a basement?
The meter stores up to 10,000 data points locally. When the connection restores, it backfills the time-stamped records. You lose no billing data.
Do I need a certified flow meter for trade billing?
Silver Instruments can supply the AMF900 with MID MI-001 or OIML R49 certification for selected regions. Ask us about the approval status for your country.
How do I power the meter if I have no mains electricity?
Choose the battery-powered version. The lithium D-cell pack lasts 2 to 4 years with 15-minute reporting. We ship spare battery packs. Changing them takes 5 minutes with a screwdriver.
Silver Automation Instruments — flow meters and telemetry sensors for water, wastewater, and industrial liquids. Tel: +86-135-1213-1526 | WhatsApp: 86-135-12131526 | WeChat: +86 13512131526. Visit flow-meter.com.au for full datasheets.
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