Model 239-1F Floor Monitor

PART NUMBERS

Model 239-1F w/Model 12 - 48-1702
Model 239-1F w/ Model 2221 - 48-2085
Model 239-1F w/Model 2350-1 - 48-2594
Model 239-1F w/Model 2224 - 48-2650
Model 239-1F w/Model 2360 - 48-2922

SURVEY METERS

Model 12 - Ratemeter
Model 2221 - Portable Scaler Ratemeter
Model 2350-1 - Data Logger
Model 2224 - Alpha/Beta Scaler/Ratemeter
Model 2360 - Alpha/Beta Data Logger

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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