Detectors
Nuclide Identification
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P-type high-purity germanium (HPGe) with Coaxial construction. Crystal nominal dimensions 65 mm diameter x 50 mm length. |
Cryostat and Cooler
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“Hardened” cryostat, with high-reliability, low-power Stirling cooler. The cryostat design is such that the unit may be switched off at any time and power subsequently re-applied without having to wait for a full thermal cycle (full warm up before cool down). This feature greatly increases system availability during measurement campaigns.
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Cool Down Time
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The high-reliability cooler is designed for continuous operation. Between making measurements the unit is powered from a DC supply, car battery or other device. Initial cool down time depends on ambient temperature, but is typically 6 hours at 25°C.
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| Gamma Dose Rate |
Three detectors determine the gamma dose rate over a wide range from 0.1 mR/h to 2000 mR/h. The instrument switches between the HPGe detector, the low range GM tube and the high range GM tube automatically. The dose rate is guaranteed accurate to ±10%. The total measurement uncertainty with all systematic sources of error included is less than ±20%. For customers with access to a certified dose rate calibration facility, a Dose Rate Wizard allows the system to perform a dose rate calibration. For customers who require a dose rate calibration warranted by the manufacturer, ORTEC offers a dose rate calibration service. NOTE: Not Applicable to TRANS-SPEC Application. |
| Gamma Energy Range |
Detective DX1 and Detective DX1-N = 40 keV to 3 MeV.
Detective DX1-8 and Detective DX1-8-N = 40 keV to 8 MeV.
TRANS-SPEC Application = variable based on amplifier gain setting. |
| Neutron Detector Module |
The optional neutron detector is a large volume segmented Lithium-6 fluoride/zinc sulfate (Li6F/ZnS) detector that is ANSI N42.34 2015 compliant.
NOTE: Not Applicable to TRANS-SPEC Application |
Hardware
| Digital MCA and Data Processor |
Display: 5.0” IPS TFT-LCD (800 x 480 pixels) sunlight readable, PCAP, multi-touch sensitive, operable with finger or stylus.
Data Processor: NXP i.MX 8M Plus |
| Data Storage |
Media: To internal RAM and removable low profile USB drive. The unit is shipped with a USB flash drive that holds >100,000 spectra. File Format: ANSI N42.42 |
| Computer Interfacing |
USB, Ethernet TCP/IP v4 connections via standard RJ45 Ethernet connection (10/100 Mbps, auto-sensing), Wi-Fi (IEEE 802.11a/b/g/e/i/h/j standards and IEEE 802.11n with protected access protocols including WPA and WPA2). Mobile MCB Server enables remote control through ORTEC CONNECTIONS-based applications, such as MAESTRO, GammaVision, etc. |
| Wireless Connectivity |
IEEE 802.11a/b/g/e/i/h/j standards and IEEE 802.11n wireless and Bluetooth 5.2. Supports all current protected access protocols including WPA and WPA2. |
GPS
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The instrument is equipped with an internal GPS. The location information associated with a measurement is optionally stored in the N42 file. |
RF Secure
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If the Detective DX1 is used in an area where no RF signals are allowed by the instrument due to security requirements, the RF Secure option disables the WiFi, Bluetooth, and GPS signal capability. If this feature is desired, “DX1-OPT-RFSECURE” should be ordered from the Accessories list.
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Digital MCA with Internal Storage of Multiple Spectral Data
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Digital Noise Suppression: LFR Filter
Conversion Gain: 16k Channels
Maximum Number of Stored Spectra: Unlimited on removable media.
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Physical
Maximum Overall Dimensions
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Maximum overall dimensions (including handle and Ge detector endcap) apply to the specific models and configurations:
DETECTIVE DX1 and DETECTIVE DX1-8 configured without strap: 15.5 in L x 5.6 in W x 9.2 in H (39.4 cm L x 14.3 cm W x 23.2 cm H)
DETECTIVE DX1 and DETECTIVE DX1-8 configured with strap: 15.5 in L x 6.9 in W x 9.2 in H (39.4 cm L x 17.5 cm W x 23.2 cm H)
DETECTIVE DX1 and DETECTIVE DX1-8 configured with neutron detector (with or without strap): 15.5 in L x 6.4 in W x 9.2 in H (39.4 cm L x 16.3 cm W x 23.2 cm H) |
Weight
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15.95 lb. (7.23 kg) gamma only; 17.35 lb. (7.87 kg) gamma+neutron |
Internal Battery
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Two rechargeable Lithium-ion. 98 Wh each, nominal. Approximately 8 hours of battery life at 25˚C when HPGe detector is cold. <4 hour time to charge. Internal batteries are hot-swappable.
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External Battery
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Battery lifetime may be extended indefinitely using the optional external battery packs. An external military battery (Model 2590) weighs less than 3.25 lb. and extends lifetime to >16 hours. |
Input Power
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12 to 17 V DC from battery or DC power supply
(universal mains supply included).
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Power Usage
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Highest during cool down and charging battery:
<100 Watt. Cold with fully charged battery <35 W.
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Operation Range
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Temperature: –20°C to 50°C. Relative Humidity: 95% non-condensing.
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Instrument Enclosure
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IP65 Sealed against ingress of dust and water. All perforations are sealed by rubber plugs (connectors, memory cards, etc.).
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Communications Software
The Detective DX1 is a member of the ORTEC CONNECTIONS family. Remote MCA control, even over a network, is achieved simply by using the included MAESTRO-Pro Advanced Spectroscopy software.
Multiple spectra may be bulk transferred from the instrument controller to an external PC via the USB connection. The Detective DX1 appears as a flash drive when connected to a laptop or desktop PC. Exported files are in ANSI N42.42 format and may be read by many programs used by Reachback teams such as CAMBIO, PeakEasy, InterSPEC, and by ORTEC software products such as GammaVision.
Detective DX1 is equipped with IEEE 802.11 a/b/g/e/i/h/j standards and IEEE 802.11n wireless and Bluetooth 5.2 allowing the Detective DX1 to be used with cell phones, laptops, and remote computer systems. The Detective DX1 is ready to use with MFK software, ORTEC GammaVision software, iOS devices (iPhone®, iPad®) and Android® devices.
Mobile MCB Server
The Mobile MCB Server software application enables the Detective DX1 to communicate wired or wirelessly with ORTEC software applications such as MAESTRO-PRO and GammaVision.
Users can develop their own applications through the use of the optional A11 Programmer’s Toolkit.