{"id":527,"date":"2014-10-01T17:40:53","date_gmt":"2014-10-01T23:40:53","guid":{"rendered":"https:\/\/scadametrics.com\/blog\/?p=527"},"modified":"2022-10-15T16:07:01","modified_gmt":"2022-10-15T22:07:01","slug":"interested-in-accumulating-flow-totals-from-a-4-20ma-flow-meter-the-ethermeter-can-help","status":"publish","type":"post","link":"https:\/\/scadametrics.com\/blog\/?p=527","title":{"rendered":"Accumulating Totalization from a Flow Meter’s 4-20mA Signal Output."},"content":{"rendered":"

\"James

Jim ‘Slim’ Mimlitz, SCADAmetrics<\/p><\/div>When totalizing the total accumulated flow through a non-absolute-encoder flow meter, it is generally preferable to interface with a pulse-per-volume signal (eg. 1 pulse per gallon). However, certain flow meters only offer a 4-20mA signal that is proportional to rate-of-flow. Examples include certain\u00a0Parshall Flume-Type Wastewater Flow Meters, Differential-Pressure Flow Meters, WH Power Meters, and many others.<\/p>\n

While it is certainly possible to program a computer or PLC to perform a running time integral of the rate-of-flow signal, this technique is difficult, time-consuming, and fraught with pitfalls. A straightforward and elegant hardware-based solution is to convert the 4-20mA signal to a pulse, and utilize the EtherMeter\u2019s sophisticated pulse-processing capabilities to provide both totalization and rate-of-flow.<\/p>\n

Interested in learning more about this technique? Check out our new Application Note in the Documentation Library: App Note #20<\/a><\/p>\n

For reference, here is a link to the Brochure for the EtherMeter<\/a>, which can process pulse signals into\u00a0total consumption and rate\u00a0data available in Modbus and\/or Allen Bradley automation protocols.<\/p>\n

The recommended Milliamp-to-Pulse Converter is Model No. APD-7500-SS-D<\/strong>.\u00a0 Alternatively, the Octal-Plug Version may be used, Model No. API-7500-SS-D<\/strong>.\u00a0 For reference, here is a link to the Brochure for the Milliamp-to-Pulse converter: the Model APD 7500 SS D<\/a><\/p>\n

\"Accumulating<\/a>

Accumulating Flow Totals From a 4-20mA Flow-Rate Signal.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

When totalizing the total accumulated flow through a non-absolute-encoder flow meter, it is generally preferable to interface with a pulse-per-volume signal (eg. 1 pulse per gallon). However, certain flow meters only offer a 4-20mA signal that is proportional to rate-of-flow. Examples include certain\u00a0Parshall Flume-Type Wastewater Flow Meters, Differential-Pressure Flow Meters, WH Power Meters, and many …<\/span> Read More →<\/span><\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":528,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,8,4],"tags":[13,97,96,9,98,28],"class_list":["post-527","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","category-general","category-meteringtechnology","tag-flow-rate","tag-flow-rate-integral","tag-milliamp-integration","tag-milliamp-to-pulse-conversion","tag-rate-of-flow-integration","tag-totalization"],"_links":{"self":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/527","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=527"}],"version-history":[{"count":16,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/527\/revisions"}],"predecessor-version":[{"id":2434,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/527\/revisions\/2434"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/media\/528"}],"wp:attachment":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=527"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=527"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}