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Model 239-1F Floor Monitor |
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PART NUMBERS Model 239-1F w/Model 12 - 48-1702 SURVEY METERS Model 12
- Ratemeter |
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| INDICATED USE: Floor monitoring for alpha, and
beta-gamma DETECTOR: Gas proportional RECOMMENDED COUNTING GAS: P-10 (10% methane; 90% argon) BOTTLE SIZE: Typically used with Matheson size 2 or Linde Q bottles (provided by customer) DETECTOR WINDOW: 0.8 mg/square cm aluminized mylar (window thickness of 0.4, 1.2, 3.9, or 7.9 mg/square cm available) WINDOW AREA: ACTIVE - Approximately 582 square cm OPEN - Approximately 425 square cm EFFICIENCY(4pi geometry): Approximately 25% - Sr-90/Y-90; 17% - Pu-239; gamma - less than 1% GAS RECHARGE: Will operate on static charge for over 2 hours COMPATIBLE INSTRUMENTS: Typically used with Model 12, 2221, 2224, or 2350-1 DETECTOR HEIGHT: Adjustable from 0.125"(0.32cm) - 3"(7.6cm) from surface DETECTOR OPERATING VOLTAGE: ALPHA - Typically 1000 - 1200 volts BETA-GAMMA: Typically 1600 - 1800 volts THRESHOLD: Typically 2 - 4 mV FLOW METER: IN - Adjustable from 0 - 100 cc/min OUT - Flow indicator from 0 - 100 cc/min GAS CONNECTORS: Double end quick disconnect for 0.25"(0.6cm) OD tubing GAS CONSUMPTION: Typically 50 cc/min CONSTRUCTION: DETECTOR - Anodized aluminum housing with stainless steel hex protective screen (79% open) CART - 1" square tubular steel and aluminum with beige polyurethane enamel paint, 7.5"(19.1cm) diameter rear wheels, and 4"(10.2cm) diameter swivel casters TEMPERATURE RANGE: -4° F(-20° C) to 122° F(50° C) May be certified for operation from -40° F(-40° C) to 150° F(65° C) SIZE: DETECTOR - 0.8"(2cm)H X 6.3"(16cm)W X 18.3"(46.5cm)L CART - 42"(106.7cm)H X 16"(40.6cm)W X 27.5"(69.9cm)L (excluding detector) WEIGHT: 25 lbs (11.4kg) (excluding gas bottle and counting instrument) |
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