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Model 3-98 Survey Meter |
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PART NUMBER:48-1135 |
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| INDICATED USE: Alpha, beta, low energy gamma survey DETECTORS: Controlled by selector switch INTERNAL: Pancake style G-M detector with 1.7 plus or minus 0.3 mg/cm² window AREA: Active - 15 cm² Open - 12 cm² EFFICIENCY(4pi geometry): 5% - C-14; 23% - Sr-90/Y-90; 19% - Tc-99; 33% - P-32; 15% - Pu-239 SENSITIVITY: Typically 3300 cpm/mR/hr (Cs-137 gamma ) ALPHA BETA SHIELD: Retractable 211 mg/cm² phenolic slide EXTERNAL: Model 44-3 low energy gamma scintillator EFFICIENCY(4pi geometry): Typically 19% or 675 cpm/microR/hr (I-125) ENERGY RANGE: Recommended 5 keV - 60 keV CONNECTOR: Series "C" (others available) METER DIAL: 0 - 5k cpm, BAT TEST (others available ) MULTIPLIERS: X0.1, X1, X10, X100 LINEARITY: Reading within plus or minus 10% of true value with detector connected AUDIO: Built in unimorph speaker with ON/OFF switch (greater than 60 dB at 2 feet ) CALIBRATION CONTROLS: Accessible from front of instrument (protective cover provided ) HIGH VOLTAGE: Adjustable from 200 - 1500 volts THRESHOLD: 30 mV plus or minus 10 mV RESPONSE: Toggle switch for FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading RESET: Push-button to zero meter POWER: 2 each "D" cell batteries (housed in sealed compartment that is externally accessible ) BATTERY LIFE: Typically 600 hours with alkaline batteries (battery condition can be checked on meter ) METER: 2.5" (6.4 cm) arc, 1 mA analog type CONSTRUCTION: Cast and drawn aluminum with beige polyurethane enamel paint 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: 9"(22.9cm)H X 3.5"(8.9cm)W X 8.5"(21.6cm)L WEIGHT: 5.6 lbs (2.5 kg) including batteries and detector |
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Common Meter Dials |
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