Replacement Probes

EXP Replacement Probes
EXP Replacement Probes
EXP Replacement Probes

We offer a variety replacement probes for our Radiation Alert® instruments.

SE International can help you find just the right probe for your application. Below are the specifications for the most common detectors that we offer.

Custom Probe Options Available. Tell us about your application and we can recommend the best probe options for your needs.

Contact For Pricing and Availability


Specifications

Ranger EXP Probe

Detector

External Halogen-quenched, uncompensated Geiger  Muller tube with a thin mica window, 1.4-2.0 mg/cm2 areal density. Effective diameter of window is 45 mm (1.75 in.). Radiation symbol on probe head label marks the center of the detector

Which Detector Works With My Model of EXP?

All Ranger EXP Models are RAP-RS2 Probes with BNC.

For Previous Model SEI’s Radiation Alert Inspector EXPs:

The RAP-RS1 fits the EXP Models (SN#s 27299 and lower)
The RAP-RS2 fits the EXP Models (SN#s 27300 and higher)

EXP Replacement probe

 

Probe Construction

Anodized aluminum housing

Size

RAP-RS1 Approx. 8.75 X 1 in. (222 X 25 mm) Dia.: 2.75 in. (70 mm)
RAP-RS2 Approx. 10.7 X 1 in. (272 X 25 mm) Dia : 2.75 in. (70 mm)

Connector

RAP-RS1: Amphenol-Tucal
RAP-RS2: BNC

Handle

Black foam grip

Weight

RAP-RS1: Approx. 11.5 oz. (328 g) w/o cable
RAP-RS2: Approx. 9.6 oz. (272 g) w/o cable

Gamma Scintillation Probes for Area Monitor and GammaView

1x1 Nal Scintillation (Typically 1.0″ dia x 1.0″ thick (25.4 x 25.4mm)

Indicated Use Low-level, wide-energy gamma detection
Detector Type NaI(Tl) scintillator, 2.5 cm (1 in) dia. x 2.5 cm (1 in) thick 
Efficiency (4π) 125I 7%
57Co 10%
137Cs 3%
60Co 3%
Energy Range 20 keV to 1.5 MeV

Sensitivity

>18,000 CPM/mR/hr (137 Cs)

Photomultiplier Tube 2.86 cm (1.123 in) diameter, magnetically shielded
Operating Voltage 500 to 1200 V
Temperature Range -15 to 50 °C (5 to 122 °F)
May be certified for -40 to 65 °C (-40 to 150 °F)
Connector Series "C"
Construction Aluminum with beige powder coat
Size (D x L) 5.1 x 18.5 cm (2 x 7.3 in)
Weight 0.5 kg (1 lb)

2x2 Nal Scintillation (Typically 2.0″ dia x 2.0″ thick (50.8 x 50.8mm)

Indicated Use Low-level, wide-energy gamma detection
Detector Type NaI(Tl) scintillator, 2.5 cm (1 in) dia. x 2.5 cm (1 in) thick 
Efficiency (4π)
125I 4%
57Co 20%
137Cs 9%
60Co 15%
 
Energy Range 30 keV to 3.0 MeV

Sensitivity

>90,000 CPM/mR/hr (137 Cs)

Photomultiplier Tube 2.86 cm (1.123 in) diameter, magnetically shielded
Operating Voltage 500 to 1200 V
Temperature Range -15 to 50 °C (5 to 122 °F)
May be certified for -40 to 65 °C (-40 to 150 °F)
Connector Series "C"
Construction Aluminum with beige powder coat
Size (D x L) 6.6 x 27.9 cm (2.6 x 11 in.)
Weight 1.04 kg (2.3 lb)

Gamma Scintillation Probes for Ranger Spectra and URSA II