Multi channel Analyzer MCA ver.3 Scintillation Survey Meter without probe

Description

Unique Sell - Assembled unit of Gamma Viewer MCA ver.3.50 without probe
MCA & CPS Survey Meter for amateur prospecting and simple gamma spectrometry.
Lifetime support and communicable developer!
The MCA ver.3 is a basic Gamma Spectrometer and Scintillation Counter Survey Meter.
It has low power consumption, fast response alert, ergonomic enclosure and a readable in daylight LCD screen. The counter made for prospecting radioactive samples and making gamma spectrum in situ for the initial tests of the samples. MCA ver.3 it's not a RIID, but it can give you an overall impression of the gamma energy emitted from the sources.
The board has regulated high voltage circuit with adjustable output of 600V-950V postive polarity that allows to connect a NaI(Tl) probe with BNC cable. Probes with high impedance divider of ~50Meg-120Meg are supported. The pulse pre-amplifier set for an optimal gain, however you can re-adjust it if required.
To use the unit you need a NaI(Tl) probe with high impedance divider and BNC cable.
UNIT CALIBRATION of hardware gain and software settings IS REQUIRED
. Any scintillation crystal always have some light output brightness difference. Any photomultiplier tube from the same batch can come with noticeable gain tolerance even on the same high voltage bias. If you are using an old stock or surplus-sale probe, settings for every probe can vary. The performance of the gamma spectrometer is strictly depending on your NaI(Tl) scintillation probe specifications and hardware/software calibration of the unit.  Please avoid shorting high voltage on BNC socket and do not use hot plug of the probe because HV arcing across the BNC jack can ruin sensitive electronics.
You will need to open the MCA enclosure and to adjust high voltage and pulse amplifier gain for your probe. Hardware calibration instruction is included. To set the hardware gain correctly with your probe you will need an oscilloscope, isotopes set and basic ability to read signals with scope.
Software calibration with MCA Terminal Windows 7/8 application needs to be performed after hardware calibration. In software calibration you'll need to set gamma dose rate factor, polynomial coefficients for energy scale, min/max channel filter.
Please note, MCA Terminal computer software is my beta version and may not work under Windows 10.
Package Include:
1pcs MCA ver.3 assembled into enclosure
1pcs USB to GX12-5 cable
link to download PDF calibration instruction
I recommend the purchase only for buyers with previous experience in gamma spectroscopy and electronics. If you a novice, I suggest to buy the adjusted MCA with probe (https://www.ebay.com/itm/224437565469)
Technical Specifications:
MCA & CPS Survey Meter with gamma doserate
MCA 10bit 1024 Channels ADC
Default Energy Range: 26keV-3000keV
2 sigma alert in scintillation mode for fast search
CPS standard deviation calibration can be triggered from menu
In scintillation mode beeps on every 5-50 particle, can be switched to mute or alert only
Internal Flash memory for spectrum CSV storage
Engineering Menu
USB communication for spectrum data download and calibration with MCA Terminal
USB Gamma Spectrum Live Mode with MCA Terminal
Display 128 x 64 dots, readable in daylight
Battery: 1000mAh 3.7V USB rechargeable & replaceable
Recommended Maximum Count Rate for Spectra < 1000 CPS
Survey Meter CPS count rate <10000 CPS
High Voltage driver: 600V-1000V for ~100Meg probe load
Pulse amplifier with adjustable gain ration
On/Off with long press on the button
Recommended BNC cable part number for NaI(Tl) probe is
CT2942-100
. Recommended BNC jack for probe is
31-221-RFX
.
Shipping with EMS / DHL / Fedex only.
Additional taxes may be charged by the carriers.