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Waspmote Radiation Sensor Board w/ J305βγ Geiger Tube US$190.00

Waspmote Radiation Sensor Board w/ J305βγ Geiger Tube

Waspmote Radiation Sensor Board+Geiger Tube

The Waspmote Radiation Sensor Board plugs into a Waspmote main board. One Geiger tube from North Optic capable of detecting Beta and Gamma radiation is included, but any Geiger tube that works in the 400V to 1000V range can be integrated, including LND models that can detect Alpha radiation.

The wireless capabilities of the Waspmote will allow you to read measurements remotely via WiFi, ZigBee, 3G cellular network, etc. This sensor board draws its power from your Waspmote host's 5V power pin on the I/O sensor connector. When this board's On/Off switch is in the On position, it can be turned off via software by your Waspmote, so you can turn it on remotely only when you're ready to make a measurement, e.g. if you have it on a robot going into a contaminated area.

Indication Methods

The board has a few ways to indicate the radiation level. A piezo speaker on board produces the typical click for each pulse; at the same time, an LED also flashes once for each pulse. There's an LCD interface connector (LCD is not included) that allows you to display readings. There's an LED bar (three green; two red) whose threshold values can be adjusted. The Geiger tube output also is connected to the RXD1 pin to cause an interrupt for every generated pulse, and to the Digital 7 pin so you can monitor when an interrupt takes place.

The Waspmote Radiation Board's library, available in the Waspmote IDE and API, has a pre-defined conversion factor for translating Counts Per Minute units into Sv/h (micro-Sieverts per hour). You can adjust this factor in the header source file.

J305βγ Geiger Tube Specifications

  • Manufacturer: North Optic
  • Radiation Detection: β, γ (Beta, Gamma)
  • Length: 111 mm
  • Diameter: 11 mm
  • Recommended Voltage: 350V
  • Plateau Voltage: 360-440V
  • Sensitivity γ (60Co): 65cps/(R/s)
  • Sensitivity γ (equivalent Sievert): 108 cpm / (Sv/h)
  • Max cpm: 30000
  • cps/mR/h: 18
  • cpm/m/h: 1080
  • cpm/Sv/h: 123.147092360319
  • Factor: 0.00812037037037
WARNING: Never touch the tube ends directly with hands or using any metallic object, under any circumstance. The tube ends work with high voltages (up to 500V) which can produce spikes if they are touched. Such spikes can cause serious injury or death (and damage the board itself too).

Note: The Geiger tube should not be exposed to sunlight because the CPM may be less accurate. It is recommended to put the sensor in an opaque enclosure when working outdoors.

The board measures 92 60 1.3 mm and fits nicely on your Waspmote. The operating temperature range is -20 to +65 C.

Application Ideas

  • Monitor radiation levels wirelessly without compromising the life of your personnel
  • Create prevention and radiation control networks around a nuclear power plant
  • Measure the amount of Beta and Gamma radiation (or Alpha with a compatible Geiger tube) in specific areas autonomously

Waspmote Radiation Sensor Board Resources

This product was added to our catalog on Monday 29 September, 2014.


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