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Victoreen® ASM-990
The ASM-990 is shown with optional GM Pancake Probe(Model 489-110D)
Probe is purchased separately
- Advanced survey meter for multiple hospital and environmental applications
- Cell phone-like multi-function key for easy menu navigation
- Backlit analog/digital display
- Integrated handle
- Error-free visual indication
- Auto-ranging
- Multiple probe use
- Full-range audio output capability
- Survey Mode data logging feature
- Timed Peak Hold feature
- Built-in scaler functions
- Barcode scanner (optional)
- Auto Power-Down feature extends battery life
The ASM-990 is an easy-to-use instrument that detects alpha, beta, gamma, or x-ray radiation within an operating range of 1μR/h to R/h 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, proportional counters, and scintillation probes operating from 500 to 1300 volts. The ASM-990 is 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, and environmental health physicists will appreciate this intelligent survey meter with its cell phone-like multi-function key for 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, and area monitor, a wipe test counter, and a contamination monitor.
The unit is supplied with a MHV connector to ensure compatibility with all Victoreen probes. A Model 992 is available that includes a fully calibrated internal energy compensated
1 R/hr GM detector.The Model 993 features a fully calibrated internal pancake detector as well as an internal energy compensated 1 R/hr GM detector.
Features
Survey Mode feature allows user to store up to 5 separate sequences
Infrared Data (IrDA) port
LCD readout
160 x 160 graphical LCD display shows digital average of the bar graph value
Analog scale has fifty-one elements arranged in a linear bar graph. Each element represents 2% of full scale. Scale markings are 0,2,4,6,8, and 10. Scale length is 2.2 inches (5.6cm)
Scale multiplier is 0.0001 to 1 million, depending on the probe selected and the units activated
LCD displays operational units such as radiation unit changes, response time changes, data, labels, and real time clock.
Pushbutton controls
Product Specifications for ASM-990 and ASM-992 Operating modes
- Rate
- Integrate
- Scaler (dual option): "Based On Measurement" or "Based On Time"
- Timed Peak Hold
- Data Logging
Operating rate ranges (dependent on selected probe) μR/hr, mR/hr, R/hr, μrem/hr, mrem/hr, rem/hr, μSv/hr, mSv/hr, Sv/hr, CPM, CPS, DPM 99mTc, DPS 131I, Bq 125I, kBq 123I, MBq 201Tl, μCi 67Ga, mCi 18F, Ci 57CoμR, mR, R, μrem, mrem, rem, μSv, mSv, Sv, C (counts), kC, MC, D (distintigrations), kD 99mTc, MC 131IComplementary units in the integrade mode with the integrated time value in seconds Accuracy Within 10% of reading between 10% to 100% of full scale indication on any range, exclusive of typical energy dependence. Accuracy is probe dependent Detector Accepts GM detectors and scintillation probes operating at high voltages between 500 and 1300 volts Environmental Temperature range: 14° to 122°F (- 10° to + 50°C) Relative humidity: 0 to 95%, non-condensing
Warm up time 5 second diagnostic check Check source Natural uranium, mounted on the case * Due to recent international airline shipping policies/restrictions, radioactive "Check Source" will not be shipped with the main unit outside the US" Power requirements Two "D" cells, 150 hours operation, automatically indicates when battery is low Housing material Proprietary polycarbonate, splash-proof case Display Liquid crystal display, 2.2 x 2.2 in
(5.6 x 5.6 cm)Data logging modes The ASM-990 series’ Log Data feature can easily be accessed via the Setup Sub-menu The unit can log/save a maximum of 500 data points in any of three separate modes (Manual and Survey modes can utilize the optional barcode scanner) Manual: Individual rate data points can be saved by pressing the Start/Stop/Rst/Save button
Timed: A data point will automatically be saved at user selectable time intervals in the range of 1 to 255 seconds
Survey: Programmed sequences can be accessed via the menu system. Pressing the Start/ Stop/Rst/Save button saves the current reading and displays the next survey location Programming of survey sequences, as well as retrieval of logged data, is accomplished via the built-in IrDA port Label names up to 20 characters can be programmed into the unit to identify the individual survey locations
Weight (without probe) ASM 990, 992: 2.1 lb(0.95 kg)
ASM 993: 2.4 lb (1.09 kg)Dimensions 4.125 (w) x 10.91 (d) x 2.5 in (h) (10.47 x 27.71 x 6.35 cm) Probe connector The unit is available with a MHV connector The unit can be used with multiple probes (5 total) by selecting the appropriate probe from the main menu. All calibration data for each probe is stored in the unit’s EEPROM
Product Specifications for ASM-992 and ASM-993 internal energy compensated 1 R/hr GM detector Range 0.1 mR/hr to 1 R/hr Radiation detected Gamma above 60 keV Accuracy ± 10% of reading between 10% and 100% of full scale on any range, exclusive of energy dependence
Product Specifications for ASM-993 internal pancake detector 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) Efficiency The internal pancake detector efficiency is shown below. In a recent performance check, the numbers shown represent typical results obtained:
14C 5%
99Tc 12%
137Cs 24%
90Sr 59%
36Cl 26%
241Am 8%
129I 2%
230Th 15%
239Pu 12%NOTE: The efficiency formula used to calculate the % Efficiency is: Eff.%=(CPM x 100) /DPM
Model Description 990 Advanced survey meter 990BC Advanced survey meter with Barcode reader 992 Advanced survey meter with internal energy compensated 1 R/hr GM detector 992BC Advanced survey meter with Barcode reader and Internal energy compensated 1/Rhr GM detector 993 Advanced survey meter with Internal energy compensated 1/Rhr GM detector and internal pancake detector 993BC Advanced survey meter with Internal energy compensated 1/Rhr GM detector Internal pancake detector and barcode reader 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. For probe selection and calibration services,see next page.
Optional accessories 990-IR-USB USB Port IrDA Adapter 990CC Carrying Case 990WM Wall Mounting Bracket 990UPH Universal Probe Holder 990PH Probe Holder for Model 489-110D 990SH Soft-Sided Holster 990SA Shoulder Strap Assembly, Note: The shoulder strap assembly is only available for the ASM-993 and must be ordered with the instrument and factory installed.
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