{"id":1719,"date":"2019-09-14T21:10:39","date_gmt":"2019-09-15T03:10:39","guid":{"rendered":"https:\/\/scadametrics.com\/blog\/?p=1719"},"modified":"2022-10-15T15:41:24","modified_gmt":"2022-10-15T21:41:24","slug":"universal-duplexer-battery-stress-test-results","status":"publish","type":"post","link":"https:\/\/scadametrics.com\/blog\/?p=1719","title":{"rendered":"Universal Duplexer – Battery Stress Test Results"},"content":{"rendered":"
\"James

Jim ‘Slim’ Mimlitz, SCADAmetrics<\/p><\/div>\n

The Universal Duplexer<\/strong><\/a> is powered by a single, user-replaceable, made-in-the-USA, CR123A lithium cell. We presently power with either an Energizer(NYSE:ENR, St. Louis MO)<\/a><\/strong>-brand cell (EL123AP) or a Panasonic<\/a><\/strong>-brand cell.<\/p>\n

\"\"<\/a><\/p>\n

The design of the Universal Duplexer is optimized for battery efficiency.\u00a0 First, CMOS switching technology was leveraged to ensure that the idle-mode current draw is less than 1\/100th of a microamp!<\/p>\n

Also, during read-mode operation, the Duplexer utilizes voltage boost technology to boost the supply voltage \u2014 ensuring that the device will continue to function even when the battery has a voltage sag due to age.<\/p>\n

As a convenience, the Universal Duplexer features an integrated battery test button<\/strong><\/span> that illuminates an Indication LED when the battery is good.<\/p>\n

In applications, it is anticipated that battery life will be affected by several factors, including secondary AMI\/AMR device meter-reading frequency and by exposure to temperature extremes.\u00a0 It is noteworthy that the battery life will not<\/strong><\/span> be affected by the meter-reading frequency of the primary AMI\/AMR device.<\/p>\n

\n

Battery Stress Test<\/strong><\/h3>\n

In order to gauge battery life expectancy<\/strong><\/span>, SCADAmetrics recently performed a battery stress test in which a secondary AMI\/AMR device was programmed to interrogate an encoder-type water meter, via the Universal Duplexer, at a high sampling rate of 15 reads per minute.<\/p>\n

After 21 days of operation \u2014 approximately 453,600 meter reads \u2014 the Universal Duplexer’s battery finally reached depletion.<\/p>\n

We were extremely pleased<\/strong><\/span> with this result!<\/p>\n

Considering that the typical AMI\/AMR endpoint meter-reading frequency is 4 meter-reads per hour maximum, that would equate to 12.9 years of meter readings<\/strong><\/span>.<\/p>\n

Because our test took place within such a short period of time, we were unable to measure the effects of battery self-discharge<\/a><\/strong>.\u00a0<\/p>\n

However, according to its specifications, the Energizer 123 Lithium cell features an extremely low<\/em> self-discharge rate of 1% per year, when installed at a location whose temperature is 21C (70\u00b0F).\u00a0 For every 10C (18\u00b0F) above that, the self-discharge increases by 1%.<\/p>\n

Temperatures colder than 21C (70\u00b0F), on the other hand, will lessen the self-discharge rate; but they will increase the internal resistance of the battery, causing the voltage to sag when the secondary AMI\/AMR device performs its read.\u00a0 However, the Duplexer is designed to overcome such internal resistance effects with its integral charge pump mechanism.<\/p>\n

When considering all factors, we are confident that under non-extreme temperatures and normal meter-reading sample rates, the Universal Duplexer will operate reliably for approximately 8 years<\/strong><\/span> before battery replacement is necessary.\u00a0<\/p>\n

\n

Important Note:<\/strong><\/span>\u00a0 The primary AMI\/AMR meter-reading device<\/strong><\/span> will always<\/strong><\/span> be able to read the water meter \u2014 even if the lithium battery is depleted or removed. This is an important performance feature that cannot be stressed enough!<\/p>\n

\n

Are you interested in how SCADAmetrics technology can help split a water meter AMI signal to two or more meter-reading systems?… Or do you have questions about its user-replaceable battery technology?\u00a0 Give us a call! We\u2019ll be glad to discuss the details!<\/p>\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

The Universal Duplexer is powered by a single, user-replaceable, made-in-the-USA, CR123A lithium cell. We presently power with either an Energizer(NYSE:ENR, St. Louis MO)-brand cell (EL123AP) or a Panasonic-brand cell. The design of the Universal Duplexer is optimized for battery efficiency.\u00a0 First, CMOS switching technology was leveraged to ensure that the idle-mode current draw is less …<\/span> Read More →<\/span><\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":1532,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,8,205,4,7],"tags":[208,225,226],"class_list":["post-1719","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","category-general","category-meter-duplexers","category-meteringtechnology","category-troubleshooting","tag-battery","tag-lithium-battery","tag-lithium-cell"],"_links":{"self":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1719","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=1719"}],"version-history":[{"count":2,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1719\/revisions"}],"predecessor-version":[{"id":2391,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1719\/revisions\/2391"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=\/wp\/v2\/media\/1532"}],"wp:attachment":[{"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scadametrics.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}