{"product_id":"ludlum-model-52-portable-portal-monitor","title":"Ludlum Model 52 Portable Portal Monitor","description":"\u003ch3\u003e\n\u003ca href=\"https:\/\/chpconsultants.com\/wp-content\/uploads\/2024\/03\/52-foot-detector.jpg\"\u003e\u003cimg class=\"alignnone size-medium wp-image-3330\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0649\/9853\/9318\/files\/52-foot-detector-225x300.jpg\" alt=\"\" width=\"225\" height=\"300\"\u003e\u003c\/a\u003e \u003ca href=\"https:\/\/chpconsultants.com\/wp-content\/uploads\/2024\/03\/52-side-of-control-panel.jpg\"\u003e\u003cimg class=\"alignnone size-medium wp-image-3331\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0649\/9853\/9318\/files\/52-side-of-control-panel-225x300.jpg\" alt=\"\" width=\"225\" height=\"300\"\u003e\u003c\/a\u003e \u003ca href=\"https:\/\/chpconsultants.com\/wp-content\/uploads\/2024\/03\/52-top-detector.jpg\"\u003e\u003cimg class=\"alignnone size-medium wp-image-3332\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0649\/9853\/9318\/files\/52-top-detector-225x300.jpg\" alt=\"\" width=\"225\" height=\"300\"\u003e\u003c\/a\u003e \u003ca href=\"https:\/\/chpconsultants.com\/wp-content\/uploads\/2024\/03\/52-top-of-control-panel.jpg\"\u003e\u003cimg class=\"alignnone size-medium wp-image-3333\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0649\/9853\/9318\/files\/52-top-of-control-panel-225x300.jpg\" alt=\"\" width=\"225\" height=\"300\"\u003e\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003chr\u003e\n\u003cp\u003eThe Model 52 Portal Monitor is used for Beta-Gamma personnel contamination monitoring and meets the FEMA standard for Emergency Response Portal Monitoring (FEMA-REP-21). It is designed to be assembled in five minutes or less without tools, and can be quickly disassembled for ease of transportation and storage. All parameters are stored in non-volatile memory, which requires no battery backup. These parameters allow easy operation with minimal setup by minimally trained personnel. The parameters are preset at the factory to detect a 1 µCi \u003csup\u003e137\u003c\/sup\u003eCs beta window source in a 10 µR\/hr background field, in accordance with the FEMA standard. The Model 52 can be powered by 120 Vac, six “D” cell batteries, or 220 Vac-powered units, which are available as a special order.\u003c\/p\u003e\n\u003cp\u003eThe instrument has a “person-counter” integrated into the electronics that increments by one every time a count is completed. It is a four-digit number normally displayed on the LCD display, next to the “READY” message. It also has an RS-232 port that can be used to print out parameter setpoints, background counts, and counts above background.\u003c\/p\u003e\n\u003cp\u003eThe portal frame incorporates an array of 18 Geiger-Mueller (GM) detectors positioned around the frame and base. Fourteen GM pancake detectors are located in the frame for monitoring the head and body.  Four cylindrical GM detectors are utilized in the base for monitoring the feet.The electronics are microprocessor-based for ease of setup and reliability. Individual LEDs (Light Emitting Diodes) mounted in the frame and also on the electronics front panel indicate the specific alarm location. LEDs in the front panel indicate count cycle status. Audible signals accompany the LEDs for additional indication. Detector counts, background, and all parameters may be viewed on the LCD display. All setup is accomplished via pushbuttons on the electronics assembly.\u003c\/p\u003e\n\u003cp\u003eThe Model 52 incorporates a summing alarm in addition to the individual channel alarms. This increases the system sensitivity to widespread contamination. If two or more channels have a noticeable increase in counts but do not exceed their alarm threshold, the sum of their counts could exceed the summing alarm.\u003c\/p\u003e\n\u003cp\u003eThe Model 52 also has background update and subtract capabilities. The instrument will take a background count and subtract it from the current count. This function helps compensate for fluctuations in background. Background subtract can be turned on or off, the background count time is adjustable, and the background interval time is adjustable. The operator can force the instrument to stop and take a background count at a different interval if desired.\u003c\/p\u003e\n\u003cp\u003eThe Model 52 is supplied with a polypropylene weather sleeve to protect against wet weather conditions. Units are also supplied with a rugged, wheeled, and padded transport\/storage case for rapid deployment.\u003c\/p\u003e\n\u003ctable class=\"table table-bordered\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eIndicated Use\u003c\/th\u003e\n\u003ctd\u003ePortable personnel monitor (primarily beta sensitive) is designed for ease of transport, can be assembled or disassembled in less than five minutes, and includes a carrying case.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSensitivity\u003c\/th\u003e\n\u003ctd\u003eThis instrument will detect the beta gamma emissions from a 1 μCi \u003csup\u003e137\u003c\/sup\u003eCs source when it is located at mid-frame of the portal monitor in a 10 μR\/hr background (per the suggested standard in FEMA report \"Contamination Monitoring Standard for a Portal Monitor Used for Emergency Response\", Sept 1992).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEnergy Response\u003c\/th\u003e\n\u003ctd\u003eEnergy dependent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody and Head Detectors\u003c\/th\u003e\n\u003ctd\u003e14 ea. GM pancake detectors (2 per channel)\u003cbr\u003e\n\u003cstrong\u003eActive Area: \u003c\/strong\u003eApproximately 15.4 cm\u003csup\u003e2\u003c\/sup\u003e (2.4 in\u003csup\u003e2\u003c\/sup\u003e) per detector\u003cbr\u003e\n\u003cstrong\u003eOpen Area: \u003c\/strong\u003eApproximately 12.2 cm\u003csup\u003e2\u003c\/sup\u003e (1.9 in\u003csup\u003e2\u003c\/sup\u003e) per detector\u003cbr\u003e\n\u003cstrong\u003eWindow: \u003c\/strong\u003e1.7 ± 0.3 mg\/cm\u003csup\u003e2\u003c\/sup\u003e mica\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShoe Detectors\u003c\/th\u003e\n\u003ctd\u003e4 ea. (2 per shoe) cylindrical GM detectors\u003cbr\u003e\n\u003cstrong\u003eWall Thickness: \u003c\/strong\u003e37 ± 7 mg\/cm\u003csup\u003e2\u003c\/sup\u003e stainless steel\u003cbr\u003e\n\u003cstrong\u003eActive Length: \u003c\/strong\u003eApproximately 22.9 cm (9 in.)\u003cbr\u003e\n\u003cstrong\u003eSensitivity: \u003c\/strong\u003e8800 cpm per mR\/hr (\u003csup\u003e137\u003c\/sup\u003eCs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDisplay and Control Unit\u003c\/th\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e LCD, 1 line x 16 characters\u003cbr\u003e\n\u003cstrong\u003eMenu Controls: \u003c\/strong\u003eSelect, Save, Exit, Increment Value, Decrement Value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLED Indicators\u003c\/th\u003e\n\u003ctd\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady: \u003c\/strong\u003eGreen LED, indicates system is ready for use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounting: \u003c\/strong\u003eGreen LED, indicates count is in process\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck OK: \u003c\/strong\u003eGreen LED, indicates count is completed and no alarms sensed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncomplete\/Updating: \u003c\/strong\u003eAmber LED, indicates user stepped off portal before count was complete, or that a background update is in progress\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow BAT\/Trouble: \u003c\/strong\u003eRed LED, indicates a low battery or high\/low background\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSum Zones: \u003c\/strong\u003e8 zones with 3 on the left, 3 on the right, 1 for the head, and 1 for the feet; LEDs are situated around a graphic indicating the relative position to the person\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKey Operating Parameters\u003c\/th\u003e\n\u003ctd\u003eAdjustable by administrator with password input\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackground Count Time: \u003c\/strong\u003eCan be set at any point from 0 to 99 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCount Time: \u003c\/strong\u003eAdjustable from 1 to 60 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForced Background Update: \u003c\/strong\u003eAdjustable from 0 to 99 minutes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlarm Hold Time: \u003c\/strong\u003e1 to 99 seconds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio\u003c\/th\u003e\n\u003ctd\u003eBuilt-in unimorph speaker with adjustable volume output via menu control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eRS-232 port for connection to printer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e95 to 135 Vac (178 to 238 Vac available), or 6 each \"D\" cell batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery Life\u003c\/th\u003e\n\u003ctd\u003eTypically 80 hours in a non-alarm condition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eAluminum housing with beige powder coat paint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeather Protection\u003c\/th\u003e\n\u003ctd\u003eCrystal clear polypropylene tubing is provided to sleeve over monitor whenever protection against wet weather conditions is desired.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePortal Dimensions (H x W x L)\u003c\/th\u003e\n\u003ctd\u003e203.2 x 104 x 43.2 cm (80 x 41 x 17 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePortal Inside Dimensions (H x W)\u003c\/th\u003e\n\u003ctd\u003e194.3 x 81.3 cm (76.5 x 32 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransport Case\u003c\/th\u003e\n\u003ctd\u003eHigh-density plastic with wheels and dual padded handles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransport Case Dimensions (H x W x L)\u003c\/th\u003e\n\u003ctd\u003e97 x 61 x 30.5 cm (38 x 24 x 12 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e29.5 kg (65 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping Weight\u003c\/th\u003e\n\u003ctd\u003e42.3 kg (93 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Ludlum","offers":[{"title":"Default Title","offer_id":43427728621622,"sku":null,"price":10927.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0649\/9853\/9318\/files\/52-full-front-view.jpg?v=1737477554","url":"https:\/\/www.chpconsultants.com\/products\/ludlum-model-52-portable-portal-monitor","provider":"CHPConsultants","version":"1.0","type":"link"}