Contatore Geiger Guardian Ray Plus con Pancake

Professional Geiger counter with Dosimeter function.

Precise and reliable multifunctional instrument, the result of Italian ingenuity and creativity, which also works as an effective dosimeter and is useful for monitoring all kinds of radioactivity .

It has installed a very sensitive Geiger Muller probe internally “Pancake”, which in addition to being very sensitive and precise, It has the interesting characteristic of being able to detect all types of ionized radiation, that is to say: the Alphas, And Beta, Gamma and X Rays. Furthermore, it clearly differs from normal Geiger tubes due to its large active surface made up of a special 45 mm diameter membrane made of very thin mica.. Therefore it is also permeable to Alpha radiation, which due to their corpuscular nature cannot be detected with common metal and borosilicate probes.

Professional Geiger counter with a significantly lower price than similar competitive products.

Its excellent characteristics have been certified several times in various measurement tests at an important certified national calibration center “ACCREDIA”. The results of these checks (paper in hand), attest without any uncertainty to its excellent performance, so we have no hesitations in calling it one of the best Geiger Counters for professional use.

Main features:

Product, sold and serviced in Italy by the same national manufacturer, it also boasts the best price/performance ratio.

Guardian Ray Plus has implemented in its microprocessor a multitude of software functions for the processing of radioactivity data, among which we mention the so-called measurement mode “SCALER” from 600 Seconds, which significantly increases the sensitivity and precision of acquisition.

Regarding the hardware it has: an internal clock unit, a practical membrane keyboard, a rechargeable lithium battery, a 2 x 16 character backlit alphanumeric LCD display, and a small buzzer with dual function, that is, it emits a “beep” for each detected particle and can also sound constantly if a certain presettable radiation threshold is exceeded.

There is also a native USB interface for downloading data to the PC and charging the battery, and a large integrated Datalogger, that thanks to its 1 Megabit non-volatile memory, allows the memorization of radioactivity measurements even for several months.

Who might need our Geiger Counter ?

Our ionizing radiation meter is useful to the qualified radiation protection expert, in the protection of citizens' health by public administrations such as municipalities, the local health authorities and by the police to conduct health investigations directly in the area.

We think it could also be useful for research and analysis laboratories, companies that import and process products from countries that have been seriously involved in nuclear accidents in the past.

We recommend purchasing it to those who need to have a precise and reliable instrument.

Therefore it is useful for those who need to ascertain the levels of ionizing radiation present in the environment, in the ground, in building materials, on some foodstuffs and in general on any product or personal object.

Specifications of the professional Geiger Guardian Ray Plus:

Model:
– Guardian Ray 7317 PLUS Geiger counter with probe housed inside the same body of the Geiger Muller Pancake type instrument suitable for professional use

Display:
– Type alphanumeric backlit liquid crystal 2×16 characters display the date and time, battery voltage and alarms

Unit of measure:
– µSievert /ora, MilliRoentgen/ora, Becquerel(CPS), Counts per minute (CPM

Type of probe used for detecting radioactivity:
– Tubo geiger made in USA Pancake ultra sensibile, model: LND-7317, with rear cladding made of thick metal and large front window made of very thin mica. E’ filled with a mixture of noble gases + halogens. It is mounted internally to the same instrument with a sensitive part “vista”. therefore it can easily detect alpha+beta+gamma nuclear radiation and X-rays.

Technical data of the probe
– typical sensitivity (Co60): 3600CPM / (mR / h)
– typical sensitivity (CS137): 3450CPM / (mR / h)
– Operating temperature – 20° + 60° C
– Geiger tube supply voltage: 500V
– Circular mica window with 45mm diameter

Dose rate sensitivity (uSV):
– approximately 400 pulses/min for 1 µSv/h ref.CS-137

Types of rays detected
– 2.5 MeV alpha rays
– 150 keV Beta rays
– Gamma rays: da 10 keV

Efficiency With 4 pi. angle (in contact)

– Alpha radiation
– Am-241 5.5 MeV circa 18%

– Beta radiation
– C-14 49 keV avg. 156 keV max. 5.0%
– Bi-210 390 keV avg. 1.2 MeV max. 30-32%
– Sr-90 546 keV and 2.3 MeV 35-38%
– P-32 693 keV avg. 1.7 MeV max. 35

Unit of measure:
– µSv/h, MilliRoentgen/h , Becquerel (Counts per second), CPM (counts per minute)
– Measurement scale calibrated from 0.01 µSv/h a 999.00 µSv/h

Equivalent dose measurement:
– For its measurement, the exclusive detection of Beta and Gamma rays is assumed, therefore the ratio 1 is assumed:1, tra Gray / Sievert, that is to say: 1 gray = 1 sievert
– Dose measurement scale: and 0.01 µSv a circa 530.00 µSv

Radioactivity measurement method:
– standard with automatic sampling time autorange of 5/10/20/30 seconds
based on the intensity of the radiation detected
– Single and average of the values ​​acquired in subsequent measurements of the same session.
– Scaler, high precision measurement mode, with a fixed sampling time of 600 seconds, to be used to discriminate very low levels of radioactivity with high precision
– Maximums and minimums, this function, if selected, allows the storage and cyclic display of the highest and lowest values ​​detected in the context of the same measurement session

Calibration:
– Guardian Ray 305FO is subjected to various measurement tests under our supervision with calibrated radionuclides of the type CO60 – CS137 – SR90. Furthermore, on request it can be supplied with a calibration certificate issued by an authorized SIT center such as Enea of ​​Frascati or the Polytechnic of Milan.

Internal memory:
– Integrated datalogger with 1 Megabit memory (over 120.000 record), allows you to internally store several weeks of measurement, the data is saved in the internal memory in real records, complete with date and time of acquisition, furthermore, the data storage interval can be preset from 1 to 242 minutes

ONLINE real-time and deferred data download:
– via the USB interface, using the x Windows software(c) Easy Ray supplied with the instrument.

Beeper & alarm buzzer
– a is generated “beep” for each particle detected by the Geiger tube, or an intense and continuous tone if an alarm threshold that can be set directly in microSievert is exceeded.

Processor Used (CPU):
– PIC18F27J53 PDIP28 da 128K FLASH RAM USB 2.0 native (from the October 2013 version)

the CPU is equipped with a native USB 2 interface.0 High-Speed integrata, furthermore it is mounted on a pressure base to allow any reprogramming or replacement with a similar one but reprogrammed with the updated firmware.

Data transfer to PC and supplied software:
– With EasyRay software via standard USB port connected to a Microsoft Windows® PC. the program is free, therefore freely downloadable from this site

Diet, Autonomy and Consumption:
– Powered by 3.8V lithium ion battery – 1500 / 1800mA/h
– Continuous operating autonomy with a full charge from the USB socket of approximately 24 hours (up to version 2012) and approximately 35 hours (from the latest version October 2013)
– consumption of approximately 35-50mA (under conditions of normal use)

Dimensions:
– Length 155 mm, Width 90 mm, max depth 30mm

Casing:
– Made of eco-friendly PLA by 3D printing

Product colours: (For availability, ask us for confirmation)
– Bianco – Giallo

Certifications:
– supplied with the EMC certificate of conformity to the CE regulations on electromagnetic interference

Recycling:
– The manufacturer can possibly collect the discarded product for disposal free of charge