Sensus iPERL is a high-performance, solid-state smart water meter that uses magnetic-inductive technology to measure water usage without moving parts . Designed for a maintenance-free lifespan of up to , it captures extremely low flow rates—as low as 1 liter per hour —to help identify leaks and reduce non-revenue water. Xylem Water Solutions Understanding the Digital Register The iPERL register is "always on" and displays the current reading at the top of the screen. North Penn Water Authority Reading Digits : Depending on the configuration, it typically displays . The first 4–6 digits (left of the decimal) represent large units like cubic feet , while the digits to the right measure down to .001 units Flow Finder : A small circle on the display indicates flow. A plus sign (+) means forward flow, a minus sign (-) indicates reverse flow, and an empty circle means no water is passing through. Unit of Measure : The display will explicitly show its unit, such as (gallons), (cubic feet), or (cubic meters). AMR Digit Bar : Dashes above specific numbers show which digits are being reported remotely via radio or touch-read systems. www.mtshastaca.gov Critical Icons and Alarms The iPERL system provides smart diagnostic alerts directly on its screen: Xylem Water Solutions Battery Icon : Appears only when the battery is low or the meter is near its end of life. Leak Alarm : Triggered if a constant flow rate (e.g., 6.25 l/h for DN15 meters) is detected over a 24-hour period. Broken Pipe Alarm : Triggered by extremely high flow rates (e.g., 3.75 m³/h for DN15) sustained for 15 minutes. Empty Pipe Indicator : A hollow circle indicates the pipe is not full, which can help identify main breaks or service removal. www.mtshastaca.gov How to Read Your Water Meter | Poway, CA - Official Website
The iPERL features a large, easy-to-read electronic display. It rotates through several screens or activates upon sensing water flow or magnetic triggers. Total Volume: Displays the total amount of water used in either Gallons, Cubic Feet, or Cubic Meters. Flow Rate: Shows the current rate of water passing through the meter (e.g., GPM). Direction of Flow: An arrow indicates if water is flowing forward (standard) or backward (potential plumbing issue). Unit of Measure: Small icons on the right or bottom specify the units (GAL, FT³, M³). ⚠️ Common Alert Codes The iPERL system monitors itself and your plumbing for issues. If you see an icon or code flashing, here is what it typically means: Leaking (Faucet Icon): Indicates a continuous flow of water for at least 24 hours. This usually suggests a leaking toilet or faucet. Broken Pipe (Flashing Faucet): Indicates an exceptionally high flow rate that could signify a major pipe burst. Empty Pipe: The meter detects air in the line or that the pipe is not completely full of water. Reverse Flow: Water is flowing in the opposite direction of the arrow on the meter body. Low Battery: The internal battery is reaching the end of its 20-year life expectancy. ⚙️ Installation Guidelines For professional installers, the iPERL offers flexibility but requires specific orientation for maximum longevity: Orientation: Can be installed horizontally, vertically, or diagonally. Flow Direction: Ensure the arrow on the meter body points in the direction of the water flow into the building. Gaskets: Always use new, high-quality rubber gaskets to ensure a watertight seal. Grounding: Do not use the meter as a grounding point for electrical systems. Ensure a grounding wire bridges the meter if necessary. 📋 Technical Specifications Technology: Electromagnetic (no moving parts to wear out). Accuracy: Maintains 95% accuracy even at extremely low flow rates (0.11 GPM). Connectivity: Integrated SmartPoint radio for AMI/AMR remote reading. Material: Lead-free composite or bronze options available. Battery Life: Designed for a 20-year operational life. 💡 Troubleshooting Tips No Display: If the screen is blank, the meter may be in "sleep mode." Try shining a bright light on the sensor or wait for water to flow. High Bill: Check for the "Leak" icon. If present, turn off the main valve to see if the flow rate drops to zero. Air Bubbles: If you recently had plumbing work, run a high-flow faucet (like a bathtub) for several minutes to clear air from the iPERL sensors.
Here’s a helpful, user-focused write-up for the Sensus iPERL Water Meter . Since the iPERL is a smart, solid-state magnetic flow meter with no moving parts, the manual can be dense. This guide distills the most common needs: installation basics, reading the display, troubleshooting, and maintenance.
Sensus iPERL Water Meter: A Practical Guide The Sensus iPERL is a static (no moving parts) magnetic flow meter designed for residential and light commercial cold water metering. It uses Faraday’s Law to measure flow, which means it never wears out mechanically, handles low flow accurately, and maintains precision over its lifetime. sensus iperl water meter manual
⚠️ Note: This is a general guide. Always refer to the official Sensus iPERL Installation & Maintenance Manual (Form #’s: 066, 117, or specific model number) for full safety and local code compliance.
1. Understanding Your iPERL Model The iPERL comes in common sizes: ⅝" x ¾", ¾", 1", 1½", and 2". Look at the meter body label for:
Model number (e.g., M13, M25, M50) Nominal diameter (DN15, DN20, DN25) Serial number Accuracy class (typically Class C or MID) Sensus iPERL is a high-performance, solid-state smart water
2. How to Read the Display (LCD) The iPERL has an 8-digit LCD screen that scrolls automatically or can be triggered by a magnet. Standard scrolling sequence (every 4-6 seconds):
Total volume (main reading) – usually in gallons (US) or cubic meters (m³). This is your billable consumption. Flow rate – shows current flow (e.g., 12.5 GPM or 2.8 m³/h). Reverse flow volume – if backflow occurs, this registers separately. Leak indicator – a small faucet or drop icon flashes when low flow is detected (<0.2 GPM for more than 10 minutes). Battery status – icon shows remaining life (replace every 15-20 years, non-user serviceable). Error code – “Err” or numeric code (see troubleshooting below).
💡 To manually cycle the display (if not scrolling): Place a strong magnet near the “mag switch” area (marked on the top or side of the meter head). Do not use a screwdriver or metal tool – it can damage the electronics. North Penn Water Authority Reading Digits : Depending
3. Installation Guidelines (for plumbers & utility personnel) Before you start:
Confirm line size matches meter size. Flush the pipeline upstream of the meter to remove debris. Do not install near magnetic fields (large motors, transformers, pumps with permanent magnets).