{"id":260,"date":"2012-03-28T05:04:36","date_gmt":"2012-03-28T05:04:36","guid":{"rendered":"http:\/\/www.gemsys.ca\/?page_id=260"},"modified":"2023-07-08T09:43:04","modified_gmt":"2023-07-08T13:43:04","slug":"overhauser-magnetometers","status":"publish","type":"page","link":"https:\/\/www.gemsys.ca\/overhauser-magnetometers\/","title":{"rendered":"Overhauser Magnetometers"},"content":{"rendered":"<div class=\"image\"><a href=\"https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/03\/DSC_0190.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5372\" src=\"https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/03\/DSC_0190-300x200.jpg\" alt=\"DSC_0190\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/03\/DSC_0190-300x200.jpg 300w, https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/03\/DSC_0190.jpg 1000w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div>\n<p>The \u201cWalking\u201d and \u201cMobile\u201d \u00a0Overhauser magnetometers can provide additional survey capability by simply adding a sensor for gradiometer data. In addition all systems can be combined with a VLF to provide shallow resistivity for efficient 3 parameter surveys.<\/p>\n<p>All systems are backed by our industry-leading three year warranty.<\/p>\n<p>There are two primary systems for consideration.<\/p>\n<p>1. High sensitivity, nearly continuous surveys<\/p>\n<p><strong><a title=\"Overhauser \u201cWalking\u201d\" href=\"#Overhauser\" name=\"top\">Overhauser \u201cWalking\u201d <\/a><\/strong>system is your most logical choice.<\/p>\n<p>2. High sensitivity, discrete surveys<\/p>\n<p><strong><a title=\"Overhauser \u201cMobile\u201d\" href=\"#Mobile\">Overhauser \u201cMobile\u201d<\/a><\/strong> system is your most logical choice.<\/p>\n<p>For all magnetic surveys a base station magnetometer is required to correct for (subtract) the normal daily fluctuations in the magnetic field.<\/p>\n<p><strong><a title=\"Overhauser \u201cBase Station\u201d\" href=\"#Base Station\">Overhauser \u201cBase Station\u201d<\/a><\/strong><\/p>\n<h3><img decoding=\"async\" src=\"https:\/\/www.gemsys.ca\/wp-content\/themes\/gemsystems\/images\/Overhauser_arctic.jpg\" alt=\"\" \/><\/h3>\n<p><strong>a) <a name=\"Overhauser\"><\/a>Overhauser \u201cWalking\u201d Magnetometer\/Gradiometer<\/strong><\/p>\n<p>A walking magnetometer\/gradiometer is a high-sampling system capable of acquiring nearly continuous data. Key features are related to data quality, cost control and productivity as follows:<\/p>\n<ul>\n<li>0.022 nT @ 1 hz sensitivity for high sensitivity data acquisition<\/li>\n<li>5 samples per second acquisition for higher productivity (either by operator or on towed vehicles) and more data for decision-making<\/li>\n<li>Ergonomic backpack and hands-free operation for greater operator ease-of-use and productivity<\/li>\n<\/ul>\n<p><br clear=\"all\" \/><strong>b)<a name=\"Mobile\"><\/a>Overhauser \u201cMobile\u201d Magnetometer\/Gradiometer<\/strong><\/p>\n<div class=\"clear\"><\/div>\n<div class=\"image\"><a href=\"https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/05\/GEM_GSM-19G.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5366\" src=\"https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/05\/GEM_GSM-19G-216x300.jpg\" alt=\"GEM_GSM 19G\" width=\"216\" height=\"300\" srcset=\"https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/05\/GEM_GSM-19G-216x300.jpg 216w, https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/05\/GEM_GSM-19G-737x1024.jpg 737w, https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/05\/GEM_GSM-19G.jpg 1000w\" sizes=\"auto, (max-width: 216px) 100vw, 216px\" \/><\/a><\/div>\n<p>A mobile magnetometer\/gradiometer is a high sensitivity system capable of acquiring data at discrete stations. Key features are related to data quality, cost control and productivity as follows:<\/p>\n<ul>\n<li>0.022 nT @ 1hz sensitivity for high sensitivity data acquisition<\/li>\n<li>Discrete data acquisition with sensor staff for routine application in various types of environments and terrains<\/li>\n<li>All of the other features of \u201cWalking\u201d Overhauser magnetometers, including low weight for highly efficient operator functioning<\/li>\n<\/ul>\n<p><strong>c)<a name=\"Base Station\"><\/a> Overhauser \u201cBase\u201d Magnetometer<\/strong><\/p>\n<div class=\"clear\"><\/div>\n<div class=\"image\"><a href=\"https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/03\/Overhauser-Base-Station.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5373\" src=\"https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/03\/Overhauser-Base-Station-225x300.jpg\" alt=\"Overhauser Base Station\" width=\"225\" height=\"300\" srcset=\"https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/03\/Overhauser-Base-Station-225x300.jpg 225w, https:\/\/www.gemsys.ca\/wp-content\/uploads\/2012\/03\/Overhauser-Base-Station-768x1024.jpg 768w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/a><\/div>\n<p>A base magnetometer is a high sensitivity system capable of acquiring data at a regular interval throughout the day. Depending on the sampling requirements, it can be either a Fast sampling unit taking 5 samples per second (up to 5 Hz) or a Standard unit sampling at one sample every 3 seconds \u00a0(up to 0.33 Hz). Key features are related to data quality, cost control and productivity as follows:<\/p>\n<ul>\n<li>The Overhauser base magnetometer has a high absolute accuracy. GEM is the global standard in Observatory magnetometers for this reason; the base magnetometer produces highly repeatable data as required in industry.<\/li>\n<li>Three Base station programming modes are available for maximum productivity. These include daily (define working hours and minutes each day); flexible (up to 30 on\/off periods) and immediate start.<\/li>\n<\/ul>\n<p>Using either daily or flexible modes means that the operator is not required to return to the base station each day; data can be acquired with maximum efficiency and stored in high volume memory.<\/p>\n<h3>To download the brochure;<\/h3>\n<p><a href=\"https:\/\/www.gemsys.ca\/wp-content\/themes\/gemsystems\/pdf\/GEM_Overhauser_GSM_19_fin.pdf\">GEM GSM19 Overhauser Brochure<\/a><\/p>\n<h3><\/h3>\n","protected":false},"excerpt":{"rendered":"<p>The \u201cWalking\u201d and \u201cMobile\u201d \u00a0Overhauser magnetometers can provide additional survey capability by simply adding a sensor for gradiometer data. In &hellip; <a href=\"https:\/\/www.gemsys.ca\/overhauser-magnetometers\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"inner-page.php","meta":{"footnotes":""},"class_list":["post-260","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.gemsys.ca\/wp-json\/wp\/v2\/pages\/260","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gemsys.ca\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.gemsys.ca\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.gemsys.ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gemsys.ca\/wp-json\/wp\/v2\/comments?post=260"}],"version-history":[{"count":91,"href":"https:\/\/www.gemsys.ca\/wp-json\/wp\/v2\/pages\/260\/revisions"}],"predecessor-version":[{"id":7170,"href":"https:\/\/www.gemsys.ca\/wp-json\/wp\/v2\/pages\/260\/revisions\/7170"}],"wp:attachment":[{"href":"https:\/\/www.gemsys.ca\/wp-json\/wp\/v2\/media?parent=260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}