Sensus Iperl Water: Meter Manual

| Parameter | Value | |------------------------|--------------------------------| | Flow range (continuous)| 0.1 – 25 GPM | | Accuracy | ±1.5% from 0.1 to 25 GPM | | Body material | Engineered polymer / brass | | Pressure rating | 150 PSI max | | Temperature | 33°F – 120°F (0.5°C – 49°C) | | Battery life | 15–20 years (non-replaceable) | | Register type | LCD, 8–9 digits (gallons or m³)| | Communication | Optical port, pulse output, RF module |


Connect pulse output wires to a pulse counter on a PLC or building automation system.


| Code on LCD | Meaning | Action per Manual | | :--- | :--- | :--- | | E-01 | Reverse flow detected (install check valve) | Remove meter, inspect for cross-connection. | | E-06 | Battery low (less than 30 days life left) | Prepare for battery replacement or module swap. | | E-09 | Register error (magnetic field interference) | Check for large magnets near the meter; cycle power (remove battery). | | LEAK (text) | Continuous low flow for >96 hours | Locate and repair customer-side leak. | | NO FWD | No forward flow while radio transmitting | Reset module via FlexNet software. |


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 sensus iperl water meter manual

: 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

Mastering the Sensus iPERL: A Deep Dive into Your Smart Water Meter

Whether you're a homeowner trying to lower your utility bill or a technician ensuring a smooth setup, understanding the Sensus iPERL water meter Go to product viewer dialog for this item.

is key. This solid-state smart meter uses advanced magnetic technology—meaning no moving parts—to capture even the tiniest drips that traditional meters might miss.

Here’s a breakdown of what you need to know, straight from the manual and expert field tips. 1. Decoding the Digital Display

features a 9-digit electronic register. Reading it correctly depends on your local utility’s units, but the standard layout includes:

The Main Numbers: The first four digits on the far left are typically the "billing units" (often in hundreds of cubic feet or gallons).

The Decimal Point: Values to the right of the decimal show precise usage down to 1/1000th of a unit. Flow Indicators: Look for a small circle on the display. A plus sign (+) means water is flowing forward. A minus sign (-) indicates reverse flow. Connect pulse output wires to a pulse counter

An empty circle means the pipe might be empty or the flow is too low to register. 2. Hunting for Leaks One of the

’s best features is its extreme sensitivity to low flow—it can detect a leak as small as 0.03 gallons per minute.

Quick Check: If you turn off all water in your home and still see a plus sign (+) or a moving digit on the far right of the display, you likely have a leak.

Advanced Tip: To find your exact flow rate, some models allow you to close and reopen the lid once to display "AL," then again to reveal the current gallons-per-minute rate. 3. Installation Essentials How to Read the iPERL

The Sensus iPERL®

is a high-performance smart water meter designed for precision and long-term reliability. Unlike traditional mechanical meters, it uses magnetic technology with no moving parts to capture extremely low flow rates. How to Read Your iPERL Meter

The iPERL features a 9-digit hermetically sealed LCD display.

Total Consumption: The digits represent the total volume used. Units (usually Gallons or Cubic Feet) are displayed on the right.

AMR/AMI Bars: Small bars above certain digits indicate the resolution reported to your utility's automated system. Flow Direction Icons: (+) Plus Sign: Water is flowing forward into the property. (-) Minus Sign: Water is flowing in reverse. No Icon: No water is currently moving through the meter. Key Features & Maintenance Sensus iPERL®+ (North America) Water Meters | Xylem US | Code on LCD | Meaning | Action

| Document Type | Source | |---------------|--------| | Installation manual | Sensus website (login required) | | Technical specifications | Sensus iPERL data sheet | | Register programming guide | Contact Sensus support | | Optical protocol specs | ANSI C12.18 library |

Sensus support (Xylem brand):


Improper installation is the #1 cause of premature bearing wear and inaccurate readings. The sensus iperl water meter manual dedicates 6 pages to hydraulic and environmental requirements.

Proper installation is critical for the iPerl to function correctly, specifically regarding flow orientation and grounding.

A. Flow Orientation

B. Piping Requirements

C. Grounding (Crucial)

D. Electrical Interference

If your iPERL has a MX-Series or iPERL with RF module (e.g., for drive-by or fixed network):