{"id":241,"date":"2015-01-05T15:24:15","date_gmt":"2015-01-05T15:24:15","guid":{"rendered":"https:\/\/wireless-telemetry.com\/blog\/?p=241"},"modified":"2015-01-05T15:24:15","modified_gmt":"2015-01-05T15:24:15","slug":"protect-your-telemetry-system-from-extreme-cold-temperatures","status":"publish","type":"post","link":"https:\/\/wireless-telemetry.com\/blog\/?p=241","title":{"rendered":"Protect Your Telemetry System From Extreme Cold Temperatures"},"content":{"rendered":"

Jim Mimlitz, NRI<\/p><\/div>\"free-vector-winter-cloud-snow-flake-clip-art_110633_Winter_Cloud_Snow_Flake_clip_art_hight\"<\/a><\/strong><\/p>\n

Extreme Cold and Pressure Sensors<\/strong><\/p>\n

During extremely cold temperatures, it is important to keep in mind that the pressure sensing devices in your system — and the tubing that feeds them —\u00a0should be prevented from freezing.\u00a0 These devices include pressure transducers, pressure switches, and pressure gauges.<\/p>\n

\"\"<\/p>\n

If\u00a0the\u00a0water in\u00a0the sensor or sensing line freezes, the expanding ice is capable of building up a\u00a0tremendous amount of\u00a0pressure that is capable of destroying\u00a0a transducer, gauge, or switch.<\/p>\n

\"\"<\/p>\n

For example, if a transducer is installed in a below-grade pit, please make sure that the lid is fully seated and sealing the top.\u00a0 It also may be necessary to cover the lid with additional insulation.\u00a0 If a transducer is installed above-grade and\u00a0sensing pressure from an oil-filled line, the line should be inspected to make sure that it is still filled with oil.\u00a0 If the oil has leaked out and back-filled with water, then it poses a freeze possibility.<\/p>\n

Also, keep in mind that the potential for sensing lines to freeze up is amplified by high winds, as the cold air will tend to force its way into holes and cracks that normally may stay warm.<\/p>\n

Powered Freeze Protection for Below Grade Transducer Pits<\/strong><\/p>\n

We recently introduced an active-heat feature that can be added to below-grade transducer pits. \u00a0To read about this technology, please click HERE<\/strong><\/a>.<\/p>\n

Ice Caps\u00a0Within Water Towers<\/strong><\/p>\n

During extended periods of extreme cold, it is possible that an ice cap can form on the top water surface within a water tower.\u00a0 Because ice has less density than water, its presence can cause the telemetry tank level reading to display lower than the true level; and therefore it may be wise to drop the PUMP_OFF level of the control system.<\/p>\n

Another good reason to drop the PUMP_OFF level is to keep an ice cap away from any installed cathodic protection\u00a0eqiupment that\u00a0is installed at the top-inside of the tank, thereby preventing the ice from damaging the instrumentation.<\/p>\n

Increasing the deadband — the difference between the PUMP_OFF and the PUMP_ON setpoints can increase the amount of water turnover inside the tank, and this\u00a0may also help keep the water temperature warmer and decrease the amount of ice.<\/p>\n

Emergency Services – Our Contact Info<\/strong><\/p>\n

Please make sure to include our phone numbers as part of the critical contact list in your emergency preparation plans:<\/p>\n

https:\/\/www.wireless-telemetry.com\/contact\/contact.htm<\/a><\/p>\n

Telemetry, SCADA, & Controls Newsletter<\/strong><\/p>\n

Was this article helpful?\u00a0 Would you be interested in receiving updates such as these in our occasional email-delivered newsletter?\u00a0 If so, here’s our sign-up page:<\/p>\n

Subscribe to\u00a0Navionics Research’s\u00a0“Telemetry, SCADA, & Controls Newsletter”<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Extreme Cold and Pressure Sensors During extremely cold temperatures, it is important to keep in mind that the pressure sensing devices in your system — and the tubing that feeds them —\u00a0should be prevented from freezing.\u00a0 These devices include pressure transducers, pressure switches, and pressure gauges. If\u00a0the\u00a0water in\u00a0the sensor or sensing line freezes, the expanding …<\/span> Read More →<\/span><\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":245,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,7,16],"tags":[],"class_list":["post-241","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","category-general","category-sensors"],"_links":{"self":[{"href":"https:\/\/wireless-telemetry.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/241","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wireless-telemetry.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wireless-telemetry.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wireless-telemetry.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wireless-telemetry.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=241"}],"version-history":[{"count":0,"href":"https:\/\/wireless-telemetry.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/241\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wireless-telemetry.com\/blog\/index.php?rest_route=\/"}],"wp:attachment":[{"href":"https:\/\/wireless-telemetry.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wireless-telemetry.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wireless-telemetry.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}