PHDS Co.
HPGe Instrument

LoPro: full HPGe identification in a low-profile package

Built for U.S. military operators, the LoPro pairs uncompromised HPGe spectroscopy with GADRAS isotope ID and Android TAK integration in a rugged, low-profile package discreet enough for missions where it counts.

LoPro Detector System
Key Features
  • Discreet, low-profile form factor (8 × 8 × 2 in)
  • Android TAK integration for reachback and situational awareness
  • Hot-swappable batteries for continuous field operation
Application Areas
Safeguards
Identify and quantify special nuclear materials at declared and undeclared facilities using HPGe isotope ID and quantitative assay without destructive sampling.
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Emergency Response
Definitive isotope ID at standoff, in seconds
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Accessories

Options and field kit for the LoPro

Capability upgrades

1

Options that add a measurement mode to the instrument.

High Dose-Rate Mode

Extends usable operation at elevated gamma dose rates, so surveys keep producing spectra where a standard configuration would saturate.

Field kit

3

Power, shielding, mounting, and transport that keep the instrument measuring through a full shift.

Internal Battery Kit

Hot-swappable internal Li-ion batteries, 2 batteries and 1 charger per package. Each battery provides about 4 hours of field operation on the Fulcrum and 2.5 hours on the GeGI 5.

External BB-2590 Battery Kit

External BB-2590 Li-ion battery package: 2 batteries, 1 charger, and cables, for powering the instrument for extended periods on battery. Each battery provides about 4 to 5 hours of field operation.

Pelican Shipping Case

Pelican shipping case for the instrument and its accessories.

Spares & consumables

3

Replacement parts and per-measurement supplies.

Spare Internal Batteries

Single BB-2557 Li-ion internal batteries for the Fulcrum and LoPro.

Straps & Comms

Shoulder straps for the GeGI and Fulcrum, and a Bluetooth headset for the GeGI, Fulcrum, and LoPro.

Android Interface Device

Android phone user interface device for the LoPro, with OMNI software installed.

All LoPro accessories in the catalog

Full Specifications
Detector
Detector typeHPGe (High-Purity Germanium)
Relative efficiency12%@ 1333 keV (Co-60)
Crystal Dimensions60mm x 25mm
Energy ResolutionFWHM < 2.5 keV at 1332 keV
Physical
Weight8 lbs (3.6 kg)
Form factorLow-profile
Cooling
Cooler typeLong-life Stirling Cycle
Cool-down time~3 hrroom temperature to operating temperature
Power
Power Supply100-240 VAC, 50-60 Hz
Battery PowerDual battery, hot-swap cable5 hrs per battery
Electronics & Software
SoftwareOnboard OMNIAndroid
TAK compatibilityYes
Isotope identificationGADRAS
Data output formatANSI N42.42, SPE, CHN, CSV, TXT
WirelessYes
Technical Notes
Methodology
How reliable are PHDS mechanical coolers? Field data from 1,300 cooler-years
Counting every repair return as a failure, field data from 264 PHDS coolers supports a cooler MTTF of 1.8 million operating hours: about a 0.4% chance of a repair in any year of service.
October 2026
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Next steps

Questions about the LoPro?

Our application engineers can help scope your measurement requirements, confirm detector performance for your specific isotopes, and recommend the right configuration.

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