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Model ASM-990 Survey Meter

Due to increased demand, we are experiencing longer than normal lead times for this product. A customer service representative will contact you with an estimated ship date when available.

• Survey Mode feature allows user to store up to 5 separate survey sequences
• Infrared Data (IrDA) port LCD readout
• 160 x 160 graphical LCD display shows digitized bar graph value, selected measurement units, status icons, and time clock
• Analog scale element represents 2% of fullscale. Scale markings are 0, 2, 4, 6, 8, and 10. Scale length is 2.2 inches (5.6 cm)
• Scale multiplier is 0.0001 to 1 million, depending on the probe and activated

The ASM-990 series detects alpha, beta, gamma, neutron, or x-ray radiation within an operating range of 1 µR/hr to 1 R/hr or 1 to 5,000,000 CPM, depending on the probe selection. Visual indication of measured values, as well as selectable parameters, are displayed on the analog/digital display.

The units are compatible with Geiger-Mueller (GM) detectors, neutron probes, proportional counters, and scintillation probes operating from 500 to 1300 volts. Designed to meet the high technology requirements of health physics, medical physics, and nondestructive testing applications, radiation safety officers (RSO), nuclear medicine laboratories, diagnostic x-ray and hospital emergency room technicians will appreciate the easy menu navigation. The units, with purchased probe, are shipped calibrated and ready-to-use. With the proper probe combination, this meter can be used as a general survey meter, an area monitor, a wipe test counter, and a contamination monitor. Other probe types are available, please call.

SPECIFICATIONS
Radiation detected: Alpha above 3.5 MeV, beta above 35 keV, and gamma above 6 keV
Range: Background to 80 mR/hr
Window: 15 cm2 (1.75 in Ø) mica, 1.4 to 2.0 mg/cm2
Typical background: 30 CPM
Protective screen: Stainless steel, hexagonal pattern providing 86% open area Accuracy: ± 10% of reading between 10% and 100% of full scale on any range, exclusive of energy dependence (protective cover open)

Note: The ASM-990 series, with the customer selected probe is calibrated to NIST standards. The ASM-990 series with GM probe standard calibration is in R, Sv, and rems. Scintillation detectors are calibrated in counts. Radionuclide specific efficiency calibrations are available upon request.