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X-Ray Probe

Sx 2r 001

The SX-2R probe for measurement of leakage and surface contamination is designed to be used with any CSP™ survey meter.

Tag Features

  • X-ray and gamma measurement
  • Low energy starting from 5 keV
  • Belongs to CSP™ family
  • Calibration via PC
  • Ideal for Homeland Security applications
  • Dynamic energy discriminator button


The SX-2R probe for measurement of leakage and surface contamination is designed to be used with any CSP survey meter. Its 1.5 in. NaI(Tl) detector with 3 mm thickness and Beryllium window makes it an ideal tool for direct measurement of x-ray emitters. The SX-2R instrument is a probe of choice for Homeland Security application since it is able to detect most contaminations (including alpha and beta) based on x-ray emission. It is also very useful for precise X-ray leakage monitoring on accelerators, X-ray generators and containers.

The SX-2R unit is part of the Canberra™ SMART Probe (CSP) family. It includes all key components of hardware circuitry (high voltage power supply, amplifier, discriminator, etc.). Also, the intelligence associated with controlling those components is located in the probe – that is control and storage of key parameters, settings, calibrations, probe ID, alarm settings (10 values for each unit to display with default setting), etc. Thus the probe is a fully integrated subsystem taking and transmitting the measurement to the instrument, which is used for display.

With high voltage and digitization of the data occurring in the probe rather than the instrument, measurement quality is no longer dependent on external device quality (cable, host instrument). Moreover, a CSP probe is using a serial protocol to communicate with host, which can be an instrument or a PC.

Calibration and QA measurements can be performed directly with the probe, without using an instrument, by connecting the probe to a computer with Canberra Smart Probe Software (CSPS™), allowing your instruments to remain deployed in the field.

Once calibrated, the SX-2R probe is ready to be used as a plug and play probe to start a QA measurement in CPM, DPM, DPM/100cm2 or c/s, Bq, Bq/cm2. The SX-2R probe connects to a survey meter via a 1.5 meter or 20 meter CSP cable.

A push-button located on the probe housing triggers an energy threshold. When depressed and held, an LED is activated and the probe measures only X-rays below the preset threshold. It is a powerful feature to reduce influence coming from gamma of higher energy and to improve the x-ray MDA. Energy threshold is set with through the CSPS platform and a PC.

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