Alpha/Beta/Gamma Probe
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Alpha/Beta/Gamma Probe
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The SABG-15+ probe is designed for the measurement of surface contamination. Its good sensitivity makes it ideal to detect alpha, beta and gamma emitters for initial survey applications.

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  • Alpha, beta and gamma surface contamination measurement
  • Geiger Mueller detector with a 15 cm² and 2.0 mg/cm² end window
  • Units available: cps, CPM, Bq, Bq/cm², DPM, DPM/100 cm²
  • Compliant with IEC 60325 and ANSI N42.17A
  • Belongs to CSP™ Family
  • Efficiency over 2Π
    • 14C: 17%
    • 90Sr + 90Y: 51%
    • 60Co: 31%
    • 241Am: 35%


The SABG-15+ probe is designed for the measurement of surface contamination. Its good sensitivity makes it ideal to detect alpha, beta and gamma emitters for initial survey applications.

The SABG-15+ unit is part of the CANBERRA™ SMART Probe (CSP) family. As part of the CSP Family it is compatible with all CSP survey meters.

The SABG-15+ device 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 communicating the measurement to the instrument.

With high voltage and acquisition 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 unit is using a serial protocol to communicate with the host that can be an instrument or a PC.

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

Once calibrated, a SABG-15+ device is ready to be used as a 'plug and play' probe to start a QA measurement in c/s, Bq, Bq/cm², CPM, DPM, DPM/100 cm² depending on the connected survey meter. SABG-15+ probes connect to the CSP survey meter via a 1.5 meter or 20 meter CSP cable.

The SABG-15+ probe is able to store up to 1000 data points from a data logging procedure handled via the host instrument. These data are: index, date/time, measurement value, selected unit and counting time.

SABG-15+ firmware can be upgraded via the CSPS platform, a CSP/USB cable and a PC.


Software Downloads



Follow CSPS user manual upgrade procedure to load new firmware into CSP probe of interest.

This document describes the changes between previous firmware version and any known issues.

RELEASED VERSION: 91629_A_V-2011-01-24.HEX

· SA20 probe P/N: EM75270
· SA20-2 probe P/N: EM90062
· SA32 probe P/N: EM90666
· SB20 probe P/N: EM74672
· SAB100 probe P/N: EM75864
· SABG100 probe P/N: EM81833
· SA100 probe P/N: EM75863
· SB100/A probe P/N: EM75862
· SB100/B probe P/N: EM82069
· SG1-R probe P/N: EM75860
· SG2-R-A probe P/N: EM75861
· SX2-R-A probe P/N: EM78677
· SPAB15 probe P/N:EM78766

New Features:


Known Isuues:

HV failure not active for SPAB15 probe

The status bit 5, power supply failure, is not functional.


SG1-R and SG2-R probes can show a sporadic saturation due to a timing conflict between the analog to digital conversions made in the probe

The initialization time is now set to 30s instead of 20s. 20s was too short to cover the necessary stabilization time of some SG2-R probe

The period of FRAM integrity check is now set to 30s instead of 20s. Because it is
synchronized with the initialization bit


Need a CSPS version higher than V2.00B to uses the 'firmware update' and 'writing
defaults parameters' functions

Need a Radiagem firmware version higher than V2.19


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