Geiger Counter Kit DIY Dosimeter with STS-5 tube, compatible with Arduino IDE

Description

NEW Assembled and Upgraded model of RH Electronics Geiger Counter DIY Kit
ver.2.00 RH-K-GK-2-A with STS-5 / SBM-20 tube
compatible with Arduino IDE
LCD Color:
BLUE
or
GREEN
depend on stock availability
Package comes with SBM-20 Geiger tube, clips and tube connection wires
Have any question or need help to download PDF manual after purchase? You are welcome to contact me!
This is
upgraded
version 2.00
of our robust Geiger Counter project based on Arduino IDE Atmega-328A. Comes soldered and with GM tube. With your package you'll receive detailed printed electrical circuit of the kit. Microcontroller is pre-programmed with installed Arduino UNO bootloader and uploaded sketch, but if you want to get program code please contact us after your purchase to get the link for downloading source files.
The new kit edition ha optimized code with true voltage feedback on high voltage make this project much more stable for serious experiments where you need regulated high voltage and high speed counting ability. With a good quality Geiger Tube (like a new LND-712) you can test very active samples and get maximum count rate as your tube is possible to go up.
The kit supports UART logging of CPM value and can be integrated into environment monitoring project.
youtu.be/tEhwbNvi-Sk
youtu.be/EHGymVbiv5E
Technical specifications:
High Voltage PWM Converter with true voltage feedback
HV Converter has ability to drive 20M load, 25uA into 500V max.
400V and 500V Geiger Tubes are supported
Dose-Rate Calculation and CPM counter
New Bargraph with CPS counter
Two tact buttons for controlling the software
Moving Average CPM calculating algorithm
UART logging with "Radiation Logger", require USB-TTL dongle
Clicker Geiger Event Sound with Mute and Two LED's
Supply Voltage: 5V DC
Supply Current: 15mA at background level
Dimensions: 89(L) x 39(W) x 22(H) mm
Shipping Weight: 250gr
UPC Number: 634654895707
SKU: RH-K-GK-2-A
What is new in this version?
Well-designed electrical scheme and improved PCB layout
True voltage feedback in PWM high voltage converter that allows now to drive 20Mega ohm load on 500V
Optimized software for fast count-rate condition
Second screen mode with CPS counter
Fast CPS bargraph with logarithmic scale (great for pancake tube or scint.probe)
Native support of 500V and 400V tubes, voltage is set with jumper switch
Two LED's with buzzer clicker and mute button
Switch between CPM or CPS screen with button
The kit is robust hardware that designed to drive a Geiger Tube while high voltage and pulse counting are controlled by one microcontroller. This is simple and educational project, however load capability and performance of the circuit allows to use this board also in more serious applications, like scientific research or extreme enthusiast tests. Second CPS screen mode with bargraph can be used with sensitive pancake GM tube or with externally connected scintillation probe.
As before you have:
Dose-Rate calculation and ability to calibrate through Arduino sketch
Moving average CPM counter
UART Logs of CPM value every 10 seconds
16x2 LCD Screen
Friendly Arduino IDE source files, open source with buyer
Measuring and adjusting high voltage:
Default PWM settings in software should work fine for both modes: 400V or 500V. If required, you can adjust PWM percentage ratio through sketch update. The kit has installed 10Mega ohm load resistor with output on terminal block. When you apply 10Mega ohm voltmeter on terminal block then load resistor creates voltage divider with internal impedance of voltmeter. That's why 400V will read as 200V and 500V will read as 250V. Maximum allowed load on 500V is 25uA - 20 Mega ohm total load. You can measure high voltage without any special dividers with your 10M multimeter, just remember to multiply reading by 2.
Compatible Geiger Tubes:
Many popular 400V and 500V tubes are supported. Default software settings of gamma dose-rate are for SBM-20.If you struggle to deal with Arduino IDE sketches please let us know when you purchase in PayPal comments of your order and we'll set the gamma coefficient for different tube you have. Usually the coefficient can be extracted from tube datasheet, in the PDF manual you can find the most common values. Some old stock tubes hasn't any useful dose-rate conversion information in their datasheet, in that case we'll use default SBM-20 settings.
The kit supports following GM tubes: SBM-20, STS-5, SBM-19, LND-712, LND-7312, SBT-9, SBT-11A, SI-180G, Philips 18504, Beta-1, Beta-2, Gamma-7C, Vacutec-70019A and more.
We tested the kit with
LND-712
new tube and
DP-2 Sr-90 source
back to back where maximum CPS reading was recorded is 5000 CPS (300K CPM on LND-712). The DP-2 Sr-90 test source is known as one of the hottest test sources that usually cause old stock tubes like SBM-20 to ignite and enter current mode. That's why if you planning to run the counter in extreme condition please be sure you have a new quality GM tube that able to work on it's maximum count-rate.
If you need this project as DIY kit for soldering please check my other items.
T
est video demonstration of the assembled kit with one of the highly activity DP-2 Beta test source and LND-712 tube. The counter stay very stable and do not drop readings like competitors devices! (LND-712 tube and test source are not included in the purchase
)
CPS - Counts per Second Test RH Electronics Arduino IDE Geiger Counter Kit RH-K-GK-2-A Sr-90 - YouTube
Video will open in a new window
Package include:
1pcs Soldered DIY Kit with LCD
1pcs SBM-20 Geiger Tube
2pcs tube clips and tube wire
please consider to obtain compatible 5V battery, USB-TTL dongle for logs and any additional cables/wires because these items are not included in the kit purchase.
SBM-20 Geiger Tube specifications:
These tubes are old stock, it originally comes from long term storage USSR military stock. Every tube tested in my lab to sort out defective tubes. SBM-20 you receive from me is guaranteed to work up to 150K CPM (~2500 CPS) due to aging and date of manufacturing. If you need a Geiger tube that works up to 5000 CPS please consider to purchase a new one like LND-712 manufactured nowadays.
The kit made of high quality components and will be sent in carefully packed box package with economy registered air mail.
We'll use the best shipping method availiable to your destination, however some areas and some countries now will take much longer to receive international mail. Please allow longer delivery time than usually and conact me prior buying if you want to change delivery method to DHL Express (recommended).