{"product_id":"ludlum-177-84-alpha-beta-benchtop-counter","title":"Ludlum 177-84 Alpha Beta Benchtop Counter","description":"\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSimultaneous Alpha \u0026amp; Beta Counting\u003c\/li\u003e\n\u003cli\u003eIndependent Alpha \u0026amp; Beta Readouts, Alarm Setpoints \u0026amp; Audible Signatures\u003c\/li\u003e\n\u003cli\u003eAutomatic Background Subtraction \u0026amp; Updating\u003c\/li\u003e\n\u003cli\u003e50 Hour Battery Backup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003eThe Model 177-84 is a microprocessor based radiation survey instrument used to measure and discriminate low level alpha and beta radiation when used with an alpha-beta scintillation or proportional detector. The instrument has automatic background subtract and automatic background update. It also has an adjustable count timer which can be set from 0 to 120 seconds. An external switch must be connected to the instrument to initiate a count.\u003c\/p\u003e\n\u003cp\u003eThe radiation level is displayed on two analog meters. The Alpha meter dial indicates 0 - 1000 cpm on a three-decade log scale. The Beta meter dial indicates 100 - 100,000 cpm on a three-decade log scale. Each channel has its own distinguishable click per event audio tone. Beta events are a low pitch and alpha events are a high pitch. Beta clicks per event can be set at 1 per 1, 10, 100, or 1000. Each channel has its own alarm point which is adjustable from zero to full scale. Alarms are indicated by an audible tone and LEDs.\u003c\/p\u003e\n\u003ctable class=\"table table-bordered\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Detectors\u003c\/th\u003e\n\u003ctd\u003eGas proportional, Dual phosphor scintillation (such as\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/ludlums.com\/products\/all-products\/product\/model-43-93\"\u003eModel 43-93\u003c\/a\u003e and\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/ludlums.com\/products\/all-products\/product\/model-43-68\"\u003eModel 43-68\u003c\/a\u003e\u003ca href=\"https:\/\/ludlums.com\/component\/virtuemart\/area-monitoring-5\/detectors-57\/alpha-beta-proportional-61\/alpha-beta-gamma-detector-153-detail?Itemid=0\"\u003e)\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLinearity\u003c\/th\u003e\n\u003ctd\u003e± 10% of true value, typically ± 2% of true value when measured with an electronic pulser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMeters\u003c\/th\u003e\n\u003ctd\u003eDual meters (one each for alpha and beta), 1 mA, 2 inch DC movement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAlpha Parameters\u003c\/th\u003e\n\u003ctd\u003e\n\u003cstrong\u003eThreshold:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e-1 to -180 mV\u003cbr\u003e\u003cstrong\u003eMeter Scale:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e0 - 1000 cpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBeta Parameters\u003c\/th\u003e\n\u003ctd\u003e\n\u003cstrong\u003eThreshold:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e-1 to -4 mV\u003cbr\u003e\u003cstrong\u003eWindow:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eAdjustable 4 to 70 mV\u003cbr\u003e\u003cstrong\u003eMeter Scale:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e100 - 100,000 cpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCross Talk\u003c\/th\u003e\n\u003ctd\u003e≤ 1% alpha counts in beta channel\u003cbr\u003e≤ 10% gross counts in alpha channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControls\u003c\/th\u003e\n\u003ctd\u003e\n\u003cstrong\u003eFront Panel:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eACK\/Reset button, Meter readout mode (HV, Alarm, Ratemeter)\u003cbr\u003e\u003cstrong\u003eRear Panel:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePower On\/Off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStatus Indicators\u003c\/th\u003e\n\u003ctd\u003e\n\u003cstrong\u003eGreen LEDs:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUpdating background, Checking, Check on\u003cbr\u003e\u003cstrong\u003eRed LEDs:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncomplete, Overload, Low battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInputs\u003c\/th\u003e\n\u003ctd\u003eCount switch signal input via phone jack TINI-JAX #41\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResponse Time\u003c\/th\u003e\n\u003ctd\u003eBeta varies between 1 to 5 s\u003cbr\u003eAlpha varies between 5 to 15 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCount Time\u003c\/th\u003e\n\u003ctd\u003eAdjustable between 0 to 120 s in 8 s increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHigh Voltage\u003c\/th\u003e\n\u003ctd\u003e200 to 2500 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e117 Vac, 60 Hz, and internal rechargable 6 V (sealed-acid) battery, battery life approximately 50 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDetector Connectors\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003eSeries type “C”\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Ludlum","offers":[{"title":"Default Title","offer_id":44808709111862,"sku":null,"price":1770.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0649\/9853\/9318\/files\/IMG_0063.jpg?v=1770911555","url":"https:\/\/www.chpconsultants.com\/products\/ludlum-177-84-alpha-beta-benchtop-counter","provider":"CHPConsultants","version":"1.0","type":"link"}