{"id":409,"date":"2011-11-03T09:31:13","date_gmt":"2011-11-03T15:31:13","guid":{"rendered":"https:\/\/scadametrics.com\/blog\/?p=409"},"modified":"2022-10-15T16:11:11","modified_gmt":"2022-10-15T22:11:11","slug":"4-20ma-analog-flow-proportional-outputs-using-the-ethermeter","status":"publish","type":"post","link":"https:\/\/scadametrics.com\/blog\/?p=409","title":{"rendered":"4-20mA Analog Flow-Proportional Outputs Using The EtherMeter"},"content":{"rendered":"

\"James

Jim ‘Slim’ Mimlitz, SCADAmetrics<\/p><\/div>[2022 Edit: The technology in this article has been deprecated, due to our introduction of the Model EMP Signalizer™<\/em> and Model APK (and APK.PLUS) Analog Pulse Kit, which supplant the need for the equipment and techniques described in this article.]<\/strong><\/p>\n

In most cases, EtherMeter users will collect flow rate data via the device’s digital Ethernet and Serial communication channels.\u00a0 Digital communication protocols include MODBUS (TCP\/RTU\/ASCII), DF1, and EtherNet\/IP™.<\/p>\n

However, in some instances, the user may wish to interface to 4-20mA analog signals that are proportional to flow.\u00a0 Replacement of Sensus ACT-PAK instrumentation is just one possible use.\u00a0 However, in this case, the EtherMeter is capable of deriving the 4-20mA signal from either an encoder-type or a pulse-output-type flow meter.\u00a0 Within the Setup Menu, the EtherMeter also permits the user to specify the 4-20mA span (the flow-rate that corresponds to 20mA).<\/p>\n

When used with an encoder-type flow meter, it is important to recognize the limitations of this type of 4-20mA signal.\u00a0 Because it is not\u00a0based upon a\u00a0hard real-time flow-rate signal, the user should therefore exercise caution when using the 4-20mA signal to drive a PID control loop.<\/p>\n

\"\"<\/a>

SCADAmetrics Analog Flow-Output Demonstrator Panel<\/p><\/div>\n

This document describes the wiring procedures and EtherMeter settings that are required for 4-20mA output signaling.\u00a0 Note that the EtherMeter requires Special Firmware plus an\u00a0ADAM-4024 module (by Advantech)\u00a0for this option, and so the purchaser must ensure that the Analog-Output Firmware+Module option is selected when buying at the eStore<\/a>.\u00a0 Also, it is important to note that when using this option, the ADAM-4024 module consumes the serial port; and therefore any digital communications to the EtherMeter must occur via the Ethernet port.<\/p>\n

Detailed procedures are available in a new Application Note posted\u00a0in the SCADAmetrics Documentation Center<\/a>:<\/p>\n

LINK TO APP NOTE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

[2022 Edit: The technology in this article has been deprecated, due to our introduction of the Model EMP Signalizer™ and Model APK (and APK.PLUS) Analog Pulse Kit, which supplant the need for the equipment and techniques described in this article.] In most cases, EtherMeter users will collect flow rate data via the device’s digital Ethernet …<\/span> Read More →<\/span><\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":413,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[11,12,51,13,59,30],"class_list":["post-409","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","tag-4-20-milliamp","tag-analog-signal","tag-flow-meter","tag-flow-rate","tag-rate-of-flow","tag-water-meter"],"_links":{"self":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/409","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=409"}],"version-history":[{"count":31,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/409\/revisions"}],"predecessor-version":[{"id":2440,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/409\/revisions\/2440"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/media\/413"}],"wp:attachment":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=409"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=409"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=409"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}