Arduino Ide Compatible Geiger Counter Dosimeter /w Lcd Shield Sbt11 Remote Usb

US $99.75

Vilnius, Lithuania
Mar 10th

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NOW WITH ONE THE BEST ?-DETECTING, 4-SEGMENT ?,?,? RUSSIAN-MADE PANCAKE TUBE SBT11 ! You are bidding for the new, fully assembled, tested and seller pre-calibrated microprocessor-based ionizing radiation counter with LCD-threshold LED-button-and-Buzzer snap-on shield (battery, which is shown in the above picture - not included). USB<->TTL serial converter based on SILABS CP2102 chip is included for connecting the board to PC. This device is preloaded with adapted GeigerKit_Default sketch (v.11.0.1) (please read more about v.11.0.1 below) This device has an integrated IR receiver and a menu system controllable with any NEC, or Sony type IR TV remote. This listing includes NECsystem remote control for controlling settings of the geiger counter. Besides control of other parameters this feature allows changing CPM>uSv or uR ratio for tubes through the menu without a need to reprogram the firmware. note: You can choose either Black-on-Green (default) or White-on-Blue LCD display Six pictures above show the device with the LCD shield on and removed (last three pictures) --- Assembly is based on Geiger counter schematics publicly available on the Internet. DIY Geiger counter project page This device is preloaded with adapted GeigerKit_Default sketch (v.11.0.1) (instructions/pictures how to connect the battery, tube and LCD are included) In videos below you can see how the devce functions (note: videos depict the same counter but with different tube and are for reference only) DESCRITPION Counter: detects ?, ? and ? ionizing radiation with one of most sensitive, russian military Geiger–Muller tube СБТ10А(SBT10A) simultaneously displays the Count Per Minute (CPM) and equivalent dose rate of radiation in ?Sv/h on the LCD display. indicates detection of ionizing particles with clicking sound and flashes of the yellow LED. (has a jumper for disconnecting-muting the buzzer); has a TTL-serial connector for connection to a computer (more information on connection to computer - below); when connected to computer counter outputs CPM, ?Sv/h and power voltage data in one minute intervals; a threshold LED lights up when preprogrammed threshold in Counts Per Minute (CPM) are exceeded. Push-button is provided for initial threshold value setup and change of the display modes (screens) - please reed more about that below in the Software functionality description section. Geiger–Muller tube The included military standard СБТ11(SBT11) Geiger–Muller tube, which is usually used in the professional radiometric and dosimetry equipment. This tube has very thin mica (~10?m) window which allows for best alpha particle. With its compact size these tubes are 2,5 to 3 times more sensitive to a natural ambient mix of radioactive particles than LND712 tubes. parameter СБТ11(SBT11) Recommended Operating Voltage (volts) 390 Count Start Voltage Range (volts) 260-320 Plateau length (volts) 80 Maximum Plateau Slope (%/1 volt) 0.5 Range of current value for all four sections ?A min. 0.3 - max. 1.5 Inherent background pulse/s at (T=25°C ± 3°C) / at (T=50°C ± 3°C) 0.25 / 2.5 Sensitivity (pulse/?R) to Cs137 at (P=10?R/s) 41,5 - 54,5.3 Amplitude of pulses V ?10 Isolation of the enclosure ? 10^9 Effectiveness of the registration of ? particles 30% Box dimensions 54mm(2.126in) x 28mm(1.102in) x 22mm(0.866in) All tubes are new in terms that they were never used and come from the long term reserve storage (New Old Stock). All tubes are throughly tested towards performance and mechanical properties. The counter is pre-calibrated both for the optimal operating voltage for the particular СБТ11(SBT11) tube as well the CPM to ?Sv/h ratio is adjusted by comparing measurements to the measurements of the industrial counter used in nuclear industry. Use of other tubes This counter circuit is well suited for use with any other Geiger–Muller tubes wether produced for just ? just ? or combined ?+? or universal ?+?+? detection. When using other tubes it is important that: - tube is specified to reliably operate in the voltage interval up to 525V. - specified tube anode resistor value is around 10 M? (3 pcs. of 10M? resistors for every anode) (note: other tubes might require a different anode resistor value but changing this resistor is rather simple task) note: a) voltage can be adjusted by the trimmer potentiometer present on the PCB. b) the CPM to ?Sv/h ration for that particular tube can be changed by connecting the board to the computer and changing it in the code (please ask if you need a code - it is freely available and I can send it to you by email either before or after your purchase) LCD display LCD display is a 2 Line x 16 character black on yellowish-green backlit display (can be used without backlight), Though it is advisable to use backlight only when necessary to conserve battery power, backlight of this display consumes only ~ 19-21 mA. note: You can choose either Black-on-Green (default) or White-on-Blue LCD display. Please contact me by message is you prefer White-on-Blue LCD. Powering the Geiger Counter is designed to be powered from 9V battery when not connected to the computer. It is recommended to buy a quality 6LR61 type battery. If one desires, the whole circuit can be powered also from a 3 AA or 3 AAA batteries connected in series or 4 rechargeable batteries (rechargeable batteries are 1.2V) as circuit is actually operating at ~ 5V and there is a voltage regulator which steps down the voltage from 9 V to 5. If you want to power the kit with lower voltage batteries 1,2 to 4,8 V please inquire. I have some step-up converters in stock. When connected to computer, counter can be powered throughout the TTL-Serial header and draw power from the computer. Power consumption Geiger detector part draws up to 5.5mA and the microprocessor part up to around 16 mA totaling ~22mA. If LCD backlight is connected, total current drawn is around 41mA. Nevertheless it is advisable to install a separate non-fixating push-button switch for need-based backlight. Connecting to a computer Circuit has a TTL-serial connector (the 90 degree bent header) this is a serial connector, however it operates at Transistor to Transistor Voltage levels and can be connected to the computer through appropriate ttl-com port or ttl-usb adapter (TTL-USB adapter is included). When connected to computer Counter can be a) powered from the computer b) simultaneously outputs to the standard serial terminal CPM, ?Sv/h and power voltage data in one minute intervals. Software The Software for the Counter is open-source (please ask if you need/want it in the file), developed in Arduino.cc Integrated Development Environment (IDE), which is very easy to grasp even for non-pros compared to programming in C. Therefore this counter is also good opportunity to learn about micro-controllers and change the software to your taste. Version 11.0.1 features: Alarm threshold settable at power-on (retained in eeprom). Alternate display (by press of the button) A "quick response" bar graph (search aid) Alarm (optional): When the CPM exceeds a preset value, the red threshold LED shall be lit.When the CPM drops back under the initially preset alarm threshold the LED whale go off. The alarm threshold is configured during power up. After the first few screens you will see a "Set Alarm" prompt. To preset the alarm you have to use a push button or simply let the preset function time out (in 3 sec. of inactivity) to keep the then current setting. Pushing the button point shall start a list of alarm settings. Push the button (or hold it down) until you find the desired setting, then release the button to set that last value. After the 600 CPM setting, the choices repeat. The possible settings increment by 10 until 100 CPM and then by 50 until the 600 CPM setting. There is also a "No Alarm" setting. The chosen setting is retained in eeprom so it does not need to be set each time. Second Screen: The same push button used to set the alarm is used to turn on or off the second screen. The chosen screen stays on until the button is pushed again. The first time the screen is entered, the totals will begin to accumulate from zero. After accumulation has started, reentering the mode will display the totals that have accumulated. The second screen shows values for 1 minute and 10 minute periods. While the period is in progress (time not reached) the accumulated counts for the period are displayed. (On the 10 minute line, the elapsed time is also shown on the right side.) When a given period is complete, the format of the display changes . It then becomes the running average of CPM and uSv/h for the last 1 minute and 10 minute periods. The second screen is updated every 5 seconds. Bar Graph: The bar graph on the first screen shows quick changes in counts to make it easier to spot trends when surveying. It has a sample rate of 1/20 of a second. by default Output is configured for Radiation logger software (please see adaptation notes) Other: Adapted firmware version contains all multiple other features present in original v10.3c Please refer to the DIYGeigerCounter project site for details. --- Dimensions PCB 40.6mm(1.6in) x 91.4mm(3.6in) x 27.9mm(1.1in) LCD 35.6mm(1.4in) x 78.7mm(3.1in) x 10.2mm(0.4in) Tube length including terminals 60mm(2.36in), diameter 10mm(0.39in) --- note: if you have a 3D printer, you might be interested printing this nice enclosure from Thingiverse.com --- I shall accept paypal only and shall attempt sending the board within one working day after the receipt of the payment. You shall have to bear any customs or other duties and taxes of your country whatsoever. I shall ship the item from Europe Worldwide as a Standard Int`l package. Please allow enough time for a shipment to arrive especially if item is sent between continents. I usually receive packages from Europe within 1-1,5 weeks and from USA or Asia 2 to 3 weeks. Shipping to Japan is free of charge. Happy bidding! Please check other items I am selling on eBay Thank you for reading!

Condition:	New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...	Brand	IMEX
Type	Dosimeters
Model	:DiY-GDC1.2.1
Country of Manufacture	Lithuania
MPN	:DiY-GDC1.2.1