Jim Mimlitz

Jim Mimlitz, SCADAmetrics

The Boone IA Firmware is a customized EtherMeter firmware that was created to provide a simple solution to a customer who desired zoned leak detection.  This EtherMeter version, which is now offered as an option at our eStore, signals an alarm annunciator when higher-than-normal flows are detected from a connected flow meter.  In this project, the custody-transfer meter was an Octave Ultrasonic Meter by Master Meter, which features a high-resolution, absolute encoder signal output.

By handling the rate-of-flow calculation, and high-flow alarm detection logic within the EtherMeter, there is no need for an external setpoint controller or PLC, thereby reducing costs and wiring complexity.  It is noteworthy that the EtherMeter can discern flow rate from most meter makes/models, including those with encoder-type and/or pulse-type signals.

Essentially, in this application, the EtherMeter functions as a programmable flow switch, in which the user sets the flow-threshold.

 

Meter 1 High-Flow Alarm Operation:

When FLOW1 is below the ALARM1 threshold (GPM), then the AUX1 output is low (0V).  When FLOW1 exceeds the ALARM1 threshold (GPM), then the AUX1 goes high (+5V).

 

Meter 2 High-Flow Alarm Operation (if present):

When FLOW2 is below the ALARM2 threshold (GPM), then the AUX2 output is low (0V).  When FLOW2 exceeds the ALARM2 threshold (GPM), then the AUX2 goes high (+5V).

 

In the above schematic, the EtherMeter is used to signal a high-flow alarm lamp. The flow meter is an Octave ultrasonic by Master Meter. The meter is co-connected to a radio-based AMR system via an RRF-50 Radio-Read Filter.

Setup Menu Settings:

  • SET AUX1 FALARM
    (activates AUX1 as a high-flow alarm output for meter 1)
  • SET AUX2 FALARM
    (activates AUX2 as a high-flow alarm output for meter 2)
  • SET ALARM1 NNNNNNN
    (sets high-flow 1 threshold as nnnn.nnn (rate-of-flow units, eg GPM))
  • SET ALARM2 NNNNNNN
    (sets high-flow 2 threshold as nnnn.nnn (rate-of-flow units, eg GPM)

Here are some application photos from the City of Boone, Iowa:

Enclosure with EtherMeter, Radio-Read Filter, and Alarm Lamp

Enclosure with EtherMeter, Radio-Read Filter, and Alarm Lamp.
If  the Rate-of-Flow Exceeds the Programmable Setpoint, the Alarm Lamp Lights Up.

Note the AMR Radio Endpoint, Which Provides a Concurrent Read to the City's Drive-By Radio-Read System.

Note the Master Meter “Dialog 3G” AMR Radio Endpoint, Which Provides
a Concurrent Read to the City’s Drive-By Radio-Read System.

Octave - Ultrasonic Custody Transfer Meter (by Master Meter), Installed in Concrete Vault.

Octave – Ultrasonic Custody Transfer Meter (by Master Meter), Installed in Concrete Vault.

Are you interested or do you have a similar application?  Don’t hesitate to call.  We’ll be glad to discuss the solution in more detail.

Jim Mimlitz

About Jim Mimlitz

Licensed Professional Electrical Engineer @ SCADAmetrics. Specialties: Connecting Flow Meters with SCADA, Telemetry, and Building Automation Systems. Electronic Circuit Design, Software Development.

Leave a Reply

Your email address will not be published. Required fields are marked *

Post Navigation