사양 / 제품번호
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RAD7
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Multi-Modes
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Continuous Radon Gas Monitor Long-term / short-term screener Sniffer, with small tube "snout", to search for radon and thoron entry points
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Multi-Measurements
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Measures radon in air, soil and water (with RAD H2O accessory)
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Sensitivity
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Monitor : 0.4 counts / min / pCi / L Sniffer: 0.2 counts / min / pCi / L
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Range
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0.1 to 20,000 pCi / L
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Memory
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1,000 previous radon concentrations and associated data. Can be read out on LCD, printed out or downloaded to PC. Also shows high, low, average and standard deviation of readings
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Principle of Operation
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Electrostatic collection of alpha - emitters with spectral analysis
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Built-in Air Pump
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Nominal 1ℓ/min flow rate. Inlet air filter. Inlet and outlet air connectors
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Spectrum Readout
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Pulse height spectrum of alpha distribution verifies radon / thoron, and also shows the RAD7 is operating properly. Accurate determination of the alpha particle energies produces a radon signature that allows discrimination of radon and thron's alpha particles from those of other isotopes
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Fast Low-Level Readings
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In continuous monitor mode, RAD7 measures the EPA action level of 4 pCi/L in just 1 hour(60 minutes), with standard deviation of 10%. Since the RAD7 has virtually no background, it is much more sensitive than other electronic detectors, easily measuring down to 0.1pCi/L
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Recovery in Minutes
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Recovers from high radon exposure with a 3.05 minute half-life : to less than 10% of peak value in 12 minutes; to less than 1% of peak value in 30 minutes. Drops from 20,000 to 1 pCi/L in less than an hour
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Tamper Proof
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A "Test Lock" command is programmed into the machine to secure your RAD7 against all kinds of intentional or unintentional tampering
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Auto Mode
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This setting starts a test run in SNIFF mode, then switches to NORMAL mode after the first 3 hours. No more waiting for equilibrium. Gives quick response, followed by statistical precision
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Continuous Updating
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Gives continuous update of radon levels so you can see the trend at all times,not just at pre-set intervals
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Computer LCD Display
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2 line × 16 character, alpha - numeric. easy to read
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Audible Radon Count
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Indicates presence and intensity of radon and thoron. May be turned on or off
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Power
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AC / battery powered - 5AH 6V batteries. Automatic charge when plugged in. Continuous battery operation : 24 hours sniffing : 72 hours continuous monitoring
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Printer
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Hewlett-Packard Model HP 82240A
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RS-232 Port
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Computer or modem hookup
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Operating Range
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Temperature : 5。~ 40℃ Humidity : 0 ~ 100%, non-condensing
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Weight / Size
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4.9kg - 24×19×27cm
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Case Material
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High density polyethylene
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