Atlas Ultrasonic Flow Meter 1.5 in ports
Atlas Ultrasonic Flow Meter 1.5 in ports
SKU:LFM-1.5-1.5in
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Product Description
Product Description
Atlas Ultrasonic Flow Meter – 1.5" Ports (Model LFM-1.5)
Accurate, Contact-Free Flow Measurement for Atlas UV Systems
The Atlas Ultrasonic Flow Meter (LFM-1.5) uses advanced ultrasonic sensor technology to provide precise, maintenance-free flow measurement for Atlas UV disinfection systems and other compatible setups.
Unlike mechanical meters, the LFM-1.5 has no moving parts, eliminating wear and ensuring long-term reliability, accuracy, and silent operation.
This model features 1.5-inch NPT ports and is suitable for high-flow installations up to 80 GPM (≈ 18 m³/h) — ideal for larger domestic, commercial, or light-industrial water treatment systems.
Key Benefits
✅ Ultrasonic Precision – Accurately measures flow using sound-wave technology with ±5% relative error.
✅ No Moving Parts – Zero mechanical wear, ensuring consistent accuracy and low maintenance.
✅ Energy-Saver Integration – Works with Atlas UV controllers to automatically dim the UV lamp during no-flow conditions, reducing energy use and preventing overheating.
✅ Fail-Safe Design – Built-in protection ensures UV treatment remains active if a sensor fault occurs.
✅ Instant Feedback – Integrated LED indicator shows flow and system status in real time.
Technical Specifications
| Specification | LFM-1.5 |
|---|---|
| Pipe Diameter | 1.5 inch |
| Flow Range | 0.4 – 80 GPM (≈ 1.5 – 300 L/min) |
| Connection Type | 1.5" NPT Female |
| Input Voltage | +5 V DC (100 mA max) |
| Accuracy | ± 5% relative error within range |
| Operating Pressure | Up to 6 bar (90 psi) |
| Orientation | Horizontal preferred; vertical acceptable if full of water |
| Inlet Piping Requirement | Minimum 15 inches straight pipe (10× pipe diameter) before inlet |
Installation Overview
-
Install on the inlet side of the UV chamber only.
-
Align flow direction arrows with the UV chamber inlet.
-
Keep at least 10× pipe diameter of straight pipe upstream for stable readings.
-
Connect via the supplied NPT adapters with union nuts and rubber washers (hand-tighten only).
-
Power via 5 V DC adapter and connect to the UV system’s IEP (Infinite Expandability Port).
Maintenance & Cleaning
-
Clean annually using a scale remover such as CLR® or LIME-A-WAY® if mineral build-up occurs.
-
Re-calibration is not required, as each unit is factory-calibrated for lifetime accuracy.
-
Inspect during UV lamp replacement for scale or debris.
Product Documents
Product Documents

Atlas Ultrasonic Flow Meter 1.5 in ports
Atlas Ultrasonic Flow Meter 1.5 in ports
Atlas Ultrasonic Flow Meter – 1.5" Ports (Model LFM-1.5)
Accurate, Contact-Free Flow Measurement for Atlas UV Systems
The Atlas Ultrasonic Flow Meter (LFM-1.5) uses advanced ultrasonic sensor technology to provide precise, maintenance-free flow measurement for Atlas UV disinfection systems and other compatible setups.
Unlike mechanical meters, the LFM-1.5 has no moving parts, eliminating wear and ensuring long-term reliability, accuracy, and silent operation.
This model features 1.5-inch NPT ports and is suitable for high-flow installations up to 80 GPM (≈ 18 m³/h) — ideal for larger domestic, commercial, or light-industrial water treatment systems.
Key Benefits
✅ Ultrasonic Precision – Accurately measures flow using sound-wave technology with ±5% relative error.
✅ No Moving Parts – Zero mechanical wear, ensuring consistent accuracy and low maintenance.
✅ Energy-Saver Integration – Works with Atlas UV controllers to automatically dim the UV lamp during no-flow conditions, reducing energy use and preventing overheating.
✅ Fail-Safe Design – Built-in protection ensures UV treatment remains active if a sensor fault occurs.
✅ Instant Feedback – Integrated LED indicator shows flow and system status in real time.
Technical Specifications
| Specification | LFM-1.5 |
|---|---|
| Pipe Diameter | 1.5 inch |
| Flow Range | 0.4 – 80 GPM (≈ 1.5 – 300 L/min) |
| Connection Type | 1.5" NPT Female |
| Input Voltage | +5 V DC (100 mA max) |
| Accuracy | ± 5% relative error within range |
| Operating Pressure | Up to 6 bar (90 psi) |
| Orientation | Horizontal preferred; vertical acceptable if full of water |
| Inlet Piping Requirement | Minimum 15 inches straight pipe (10× pipe diameter) before inlet |
Installation Overview
-
Install on the inlet side of the UV chamber only.
-
Align flow direction arrows with the UV chamber inlet.
-
Keep at least 10× pipe diameter of straight pipe upstream for stable readings.
-
Connect via the supplied NPT adapters with union nuts and rubber washers (hand-tighten only).
-
Power via 5 V DC adapter and connect to the UV system’s IEP (Infinite Expandability Port).
Maintenance & Cleaning
-
Clean annually using a scale remover such as CLR® or LIME-A-WAY® if mineral build-up occurs.
-
Re-calibration is not required, as each unit is factory-calibrated for lifetime accuracy.
-
Inspect during UV lamp replacement for scale or debris.
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