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North Penn Business Park,
4500 North Cannon Ave. Lansdale, PA
19446, USA
Tel No.: (267) 436-3991
Fax: (215) 362-5343
CRAIG MILLS:
Email id: cmills@apantec.com
Tel No.:267-436-4034
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Monday, March 15, 2010 |
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| SD-Series Scintillation Detectors
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| Apantec has developed the SD series
of scintillation detectors for use in process
monitoring systems. The SD series
detectors include a scintillator, photomultiplier
tube, mu-metal shield, dynode chain, and Lucite
light pipe in a cylindrical enclosure. A light
emitting diode (LED) is located in the Lucite
light pipe for automatic gain control. A temperature
sensor located within the Lucite light pipe provides
a temperature signal for temperature compensation.
The detector housing is 2.5” in diameter
x 7 inches long. The scintillation material is
selected based on the type(s) of radiation to
be measured. |
A separate preamplifier/analyzer enclosure
located in proximity to the detector is used to
perform several functions. The preamplifier provides
operating voltage to the associated scintillation
detector for detector operation. A closed loop
feedback control circuit in the preamplifier/analyzer
provides automatic gain stabilization of the scintillation
detector, correcting for variations in gain due
to temperature, aging and power supply drift.
Finally, the preamplifier/analyzer enclosure includes
a SCA circuit which can be set to integrate up
to three specific regions of interest when used
for gamma applications, or set to operate in gross
counting mode. |
| An optional MCA with full 1024 channel gamma spectrum can also be
provided for more detailed analysis. The preamplifier/analyzer
enclosure is provided with a NEMA4 rating and is
designed for mounting to a flat surface. The detector
is interconnected to the preamplifier/analyzer enclosure
using a four foot long (nominal) cable. Ethernet
communication is used for interconnection to the
local display and control unit. The interconnection
cables are provided fully assembled and tested.
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| Extended range scintillation detectors are also
available using the Apantec process, which measures
the current output from the detector in high fields.
The detector circuitry automatically switches from
pulse counting mode to current mode. |
All SD series
detectors are provided fully calibrated to NIST
standards.
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| SD Series Detectors: |
| Model |
Crystal |
Size |
Radiation Measured |
Temperature |
| SD115N |
NaI |
1” x 1.5” |
Gamma |
–10 °C to +50 °C |
| SD220N |
NaI |
2” x 2” |
Gamma |
–10 °C to +50 °C |
| SD115NH |
NaI |
1” x 1.5” |
Gamma |
–10 °C to +90 °C |
| SD220BH |
BGO |
2” x 2” |
Gamma |
–10 °C to +150 °C |
| SD201PB |
NE102 |
2” x 0.01” |
Beta |
–10 °C to +50 °C |
| |
BGO |
¼” cube |
Gamma |
–10 °C to +50 °C |
| Note: Other crystal
sizes, crystal combinations, temperature ratings
and extended range detectors are available.
Please consult the factory |
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| SPECIFICATIONS |
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DYNAMIC RANGE: |
1E+0 to 1E+7 CPM (wide range optional) |
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DETECTOR OUTPUT: |
Negative Pulse. |
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DETECTOR ACCURACY: |
±15% of true field intensity. |
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DETECTOR LINEARITY: |
±5%. |
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OPERATING VOLTAGE: |
500 to 1500 V |
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NOMINAL LED BACKGROUND: |
10–15 CPM. |
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OPERATING HUMIDITY: |
0–95% non-condensing. |
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HOUSING: |
Moisture Proof Stainless Steel. |
| WEIGHT: |
2.7 kg (5 lb). |
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| Quality: |
| The SD Series detectors are designed
and manufactured under a quality system in compliance
with the following standards and requirements: |
- 10CFR21
- 10CFR50, Appendix “B”
- IEEE-730
- ANSI/ASME NQA-1, ANSI/ASME NQA-2, Part 2.7
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| © 2009; Apantec,LLC. All Rights Reserved. |
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