B METERS IWM-PL3 Pulse Module

Product Description

The IWM-PL3 module is a device designed to transmit reading data via pulse output from B METERS water meters, specifically the GMDM-I, GMB-I, GMB-RP-I, and CPR-M3-I models. Configuration is performed using an Android device with NFC and the Bmetering NFC Config application, available on the Google Play Store. This application allows for setting impulsive values, operating options, and monitoring status and alarms. For detailed configuration features, refer to the configuration software manual.

Technical Data

• Working temperature: +1°C to +55 °C
• Power supply: Lithium battery 3.6V Li-SOCI2 – 1.65 Ah* (non-replaceable)
• Maximum battery duration: 10 years** (in ideal operative conditions)
• Communication interface: Open Collector, polarized – max 30 VDC (100mA)
• Protection level: IP68*** (maximum 24 hours of continuous submersion at 1 m depth)
• Dimensions (l x p x h, without cable): 88 × 69 × 28 mm
• Cable length: 1.5 m
• Weight: 122g

* Batteries are not replaceable. Attempting to replace them will void the warranty and irreversibly damage the device.

** In ideal operative conditions.

*** Maximum 24 hours of continuous submersion at 1 m depth.

Installation

Before installation, remove the metal sticker from the inductive sensor of the module. The IWM-PL3 module is compatible with GMDM-I, GMB-I, GMB-RP-I, and CPR-M3-I meters.

Installation Steps:

1. Remove the metal sticker from the inductive sensor. [Image Description: A diagram showing a red arrow pointing to remove a sticker from the inductive sensor of the module.]
2. Align the module's hooks with the meter's hooks. Push the module horizontally until it clicks and is centered with the meter dial. [Image Description: A diagram showing a module being attached to a water meter, with a red curved arrow indicating a 'CLICK!' sound.]
3. Apply the screw and the anti-tampering sticker. [Image Description: A diagram showing a screw being inserted and an anti-tampering sticker being applied to the installed module.]
4. Configure the module using the Bmetering NFC Config application. The module will not send pulses without configuration. [Image Description: A smartphone with NFC capabilities placed over the installed module for configuration.]

Wiring Connections

• White [+]: Regular count wire, NO contact (Normally Open). Closes each time a pulse is sent, regardless of flow direction.
• Yellow [+]: Tampering wire, NC contact (Normally Closed). Opens for the duration of one pulse when an event occurs (e.g., module removal, fraud, cable cut, magnetic fraud).
• Green [+]: Programmable wire, NO contact (Normally Open). Functions include Absolute counting (with backward flow compensation), Backward counting, or Dosing (closes every 'x' litres, programmable).
• Brown [-]: Ground (common wire).

Cable Extension Guidelines

To extend the default cable, use a braided shielded cable with the following specifications:

• Maximum extension length: 8.5 meters (total length up to 10 meters including the default 1.5m cable).
• Cable section: 4 poles x 0.25 mm².
• Maximum applicable current: 100 mA (absorbable), 30 VDC.
• Copper shielding: > 70%.

Safety Precautions

• Handle the device with care during installation. Avoid crushing, bending, or exposure to electrostatic discharges.
• Do not install near heat sources.
• The module complies with European directives 2011/65/UE (RoHS). Dispose of the device responsibly at the end of its life cycle according to local regulations. Do not incinerate or expose to high temperatures.
• Unauthorized interventions or modifications may cause malfunctions or damage the product.

Warranty Information

The warranty period is 24 months from the date of shipping, covering defects in materials or workmanship under normal use and maintenance. This warranty is valid in the country of purchase and within the European Union. To claim warranty service:

• Products must be delivered for repair at the customer's expense.
• Proof of purchase (tax document) is required.
• Repairs do not extend the original warranty period.
• Technical analysis costs may apply if no defect is found.
• The warranty is void if the failure is due to impacts, falls, misuse, non-original batteries, accidents, product alteration, tampering, or unsuitable packaging during transport.
• The battery is not covered by the warranty.
• The warranty does not cover inability to use the product or consequential damages.
• Damage caused by usage not described in this manual is not covered.

Support

For technical assistance, contact your dealer or B METERS after-sales service at ticket@bmeters.com.

Declaration of Conformity

B METERS declares that the IWM-PL3 complies with the essential requirements and relevant provisions of Directive 2014/30/EU. The full declaration is available on the official website: www.bmeters.com.