{"product_id":"ludlum-model-177-61-alarming-ratemeter","title":"Ludlum Model 177-61 Benchtop Counter","description":"\u003cp\u003eThe Model 177-61 is a rugged benchtop ratemeter with an alarm. This instrument is very popular for frisking operations at stations where line power is available. It can also be used in portable applications for up to 50 hours using the internal rechargeable battery.\u003c\/p\u003e\n\u003cp\u003eThe Model 177-61 supports GM, proportional, and scintillation detectors, and displays the results on a linear readout analog meter. The audio alarm is adjustable from 0 through 150% of full scale and is factory set to latching. Reconfiguration to non-latching can be accommodated via a minor internal change.\u003c\/p\u003e\n\u003cp\u003eFront-panel controls include a four-position rotary switch for selecting each detector decade, alarm set control, audio volume adjust, fast\/slow response switch, power on\/off switch, and pushbuttons for count reset, battery test, high-voltage test, and alarm test. The back panel contains the power cord connection and a 9-pin type \"D\" plug that supports rapid battery charging, 6 to 9.6 V power output, alarm output, pulse output, and a recorder output.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0649\/9853\/9318\/files\/landing_mockup_large.png\" alt=\"\" width=\"86\" height=\"107\"\u003eAdd a Counts.Pro for $499 to digitize your surveys and turn your meter into a digital scaler\/ratemeter\/cloud connected GPS datalogger!  \u003ca title=\"See Here!\" href=\"https:\/\/store.chpconsultants.com\/search?q=COUnts.pro\u0026amp;submit=\"\u003eTake your meter to the next level with Counts.Pro\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eLudlum Model 177 Alarming ratemeter.  Available in the 177, 177-45 and 177-61 models\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4-Range Meter\u003c\/li\u003e\n\u003cli\u003eLinear Analog Scale Readout\u003c\/li\u003e\n\u003cli\u003eAdjustable Alarms\u003c\/li\u003e\n\u003cli\u003e50 Hour Rechargeable Battery\u003c\/li\u003e\n\u003cli\u003eOperates with GM, Proportional \u0026amp; Scintillation Detectors\n\u003cul\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eModel 177 Series\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003ca href=\"http:\/\/www.ludlums.com\/component\/virtuemart\/benchtop-counter-15-detail?activetab=introduction\"\u003e\u003cspan style=\"color: #000000;\"\u003eModel 177\u003c\/span\u003e\u003c\/a\u003e\u003c\/strong\u003e: supports GM and scintillation detectors, linear analog meter, 4-decade range, 0 to 500,000 cpm (other dials available), adjustable audible \u0026amp; visual alarm (Part Number 48-1632) \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003ca href=\"http:\/\/www.ludlums.com\/component\/virtuemart\/benchtop-counter-64-detail?activetab=introduction\"\u003e\u003cspan style=\"color: #000000;\"\u003eModel 177-50\u003c\/span\u003e\u003c\/a\u003e\u003c\/strong\u003e: supports GM, scintillation, and proportional detectors, logarithmic meter, 5-decade range, 10 to 1,000,000 cpm (other dials available), adjustable audible \u0026amp; visual alarm (Part Number 48-1202) \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003ca href=\"http:\/\/www.ludlums.com\/component\/virtuemart\/benchtop-counter-65-detail?activetab=introduction\"\u003e\u003cspan style=\"color: #000000;\"\u003eModel 177-61\u003c\/span\u003e\u003c\/a\u003e\u003c\/strong\u003e: supports GM, scintillation, and proportional detectors, linear analog, 4-decade range, 0 to 500,000 cpm (other dials available), adjustable audible \u0026amp; visual alarm (Part Number 48-1382) \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e\u003ca href=\"http:\/\/www.ludlums.com\/component\/virtuemart\/alpha-beta-monitor-483-detail?activetab=introduction\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eModel 177-84\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e: s\u003c\/span\u003eupports scintillation and proportional detectors, dual analog 3-decade meters (alpha range 0 to 1000 cpm, beta range 0 to 100,000 cpm), independent adjustable audible \u0026amp; visual alarms (Part Number 48-2727)\u003c\/p\u003e\n\u003cdiv class=\"tab-content\"\u003e\n\u003cdiv id=\"specifications\" class=\"tab-pane rl_tabs-pane nn_tabs-pane active fade in\" role=\"tabpanel\" aria-labelledby=\"tab-specifications\" aria-hidden=\"false\"\u003e\n\u003ctable class=\"table table-bordered\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eMulti-purpose radiation monitoring, frisking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Detectors\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eGM, proportional, scintillation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLinearity\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eWithin 10% of true value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMeter Dial\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003e0 - 500 cpm, 0 - 2.5 kV, BAT TEST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMeter\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003e6.4 cm (2.5 in.) arc 1 mA analog type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMultipliers\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003ex1, x10, x100, x1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResponse Time\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eToggle switch control FAST (2.2 s) SLOW (22 s) from 10% to 90% of final reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAlarm Set\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eFront-panel locking control allowing alarm to be set at any point on the meter (can be read on meter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReset\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003ePushbutton to zero meter and\/or reset alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCalibration Controls\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eAccessible from back of instrument (protective cover provided)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAlarm\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eIndicated by red lamp and full volume audible tone (greater than 60 dB at 61 cm \u0026lt;2 ft\u0026gt;)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHigh Voltage\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eAdjustable from 400 to 2500 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThreshold\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eAdjustable from -2 to -100 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eBuilt-in unimorph speaker with volume control to provide click-per-event audio or audible alarm indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eData Out\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003e9-pin series \"D\" connector allowing for external connections of the following items:\n\u003cul\u003e\n\u003cli\u003eBattery\u003c\/li\u003e\n\u003cli\u003eUnregulated supply\u003c\/li\u003e\n\u003cli\u003eInstrument common ground\u003c\/li\u003e\n\u003cli\u003eAlarm signal (current sink)\u003c\/li\u003e\n\u003cli\u003ePulse out\u003c\/li\u003e\n\u003cli\u003eExternal background subtract\u003c\/li\u003e\n\u003cli\u003eRecorder output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecorder Output\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eCorrelated to meter reading (adjustable to 1 V at 1 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003e95 to135 Vac (178 to 240 Vac available), 50 to 60 Hz, 6 V sealed lead-acid rechargeable battery (built in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery Life\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eTypically 50 hours in non-alarm condition (battery condition can be checked on meter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery Charger\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eBattery is continuously trickle-charged when instrument is connected to line power and turned on (optional external fast charger available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ludlum","offers":[{"title":"Default Title","offer_id":43427543089206,"sku":"214777261-1","price":1367.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0649\/9853\/9318\/files\/20230201_091637-scaled.jpg?v=1737475791","url":"https:\/\/www.chpconsultants.com\/products\/ludlum-model-177-61-alarming-ratemeter","provider":"CHPConsultants","version":"1.0","type":"link"}