Jim Mimlitz

Jim Mimlitz, SCADAmetrics

The Honeywell (Elster) evoQ4 is a very popular magnetic flow meter in use throughout North America.  It is available with an Absolute Encoder Output signal, pulse signal, or both.  At time of purchase, the AMR encoder signal may be specified as either “Elster K-Frame” protocol or “Sensus” protocol.

Honeywell (Elster) evoQ4 Magnetic Flow Meter.

If you would like to connect an evoQ4 to your SCADA, Telemetry, or Building Automation system — the SCADAmetrics EtherMeter® is the perfect tool to help!… as the EtherMeter can translate Elster (or Sensus) protocol meter readings from the evoQ4 into Modbus, Allen-Bradley EtherNet/IP, and Allen-Bradley DF1.

The following diagram illustrates connection of an evoQ4 to an automation system. Please note that the EtherMeter may be connected to the evoQ4 using the AMR encoder signal, the pulse signal, or both encoder and pulse (shown):

Connection of an evoQ4 to an Automation System via SCADAmetrics EtherMeter.


In certain instances, the evoQ4 is already connected to the Water Utility’s AMR/AMI system.  However, with the use of a SCADAmetrics Duplexer, this is not a problem.  The following diagram illustrates how an evoQ4 may be “co-metered” by both the Water Utility and an Automation System. Please note that the EtherMeter may be connected to the evoQ4 using the AMR encoder signal, the pulse signal, or both encoder and pulse (shown):

Connection of an evoQ4 to an Automation System via SCADAmetrics EtherMeter, with Utility Co-Metering.


To assist EtherMeter/evoQ4 users with integration, we have also published an Application Note HERE.

To read about the evoQ4 AMR encoder signal option modules, click HERE.

To review our table of evoQ4 meter reading resolution versus size, click HERE.

To review additional wiring information contained in our 2009 blog article about the evoQ4, click HERE.


Are you interested in how SCADAmetrics technology can help connect your evoQ4 magmeter to your SCADA, Telemetry, or Building Automation System? Give us a call! We’ll be glad to discuss the details!

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.

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