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Terra-P Radiation dosimeter MKS-05 By Radu Motisan Posted on December 8th, 2009 , 1455 Views (Rate 1.15)

I've just received a very nice and compact russian dosimeter, the Terra-P, purchased from Ebay.

It came with a nice leather case, manual and good quality batteries. It is easy to use, and quite sensitive. The background radiation in my location is 0.11uSv/h .
This dosimeter can measure gamma radiation from 0.1uSv/h up to 999.9uSv/h . Besides this dose rate, it also features a dose measurement, a clock and alarm triggered by unsafely high levels of radiation.
It can measure Beta rays if the Geiger Muller cover is removed, but also x-rays (tested with a DY86 rectifier tube, more on this later).

The main control keys are the MODE and THRESHOLD buttons.
Press shortly the MODE button to switch the dosimeter on.

The Terra-P includes four operational modes: measurement of gamma radiation equivalent dose rate, measurement of gamma radiation equivalent dose !(TERRA-P is unique among pocket dosimeters. Only TERRA-P able to measure this parameter. It very important parameter which show how many of radiation energy absorbed body and how long time man can stay in zone with high radiation), clock, and alarm clock. Press the MODE button to switch the operational modes of the dosimeter.

By default, the dosimeter is switched in the mode of measurement of gamma radiation equivalent dose rate, which is indicated by the "µSv/h" symbol.
Use the THRESHOLD button to run the programmed threshold level and change its value. At excessive threshold level the dosimeter will alarm about hazard (by default, the preset threshold value is 0.30 µSv/h, an average permissible radiation level for premises). Zero the previous measurement results by the THRESHOLD button.

To enter the mode of measurement of gamma radiation equivalent dose, press shortly the MODE button. Four digits and "mSv" symbol appear on the display.
Note. In case of natural (c 0.1 µSv/h) gamma radiation background, an ED change by one low-order digit occurs on the display in 10 hours, and the "0.001 mSv" result, equal to 1.0 µSv, is shown on the digital indicator.

The clock mode of the dosimeter operation follows and two periods start blinking with one-second interval.

The alarm clock mode of the dosimeter follows and two steady periods appear on the display. Program the alarm clock with the help of the MODE and THRESHOLD buttons. The alarm clock signal symbol is indicated on the display at that. Note. The alarm clock operates even if the dosimeter is off.

Download the English manual here.

To read more on radiation measurements, you can also see this Wikipedia article on the Sievert.

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December 8th, 2009 | Tags: dosimeter, geiger counter, High Voltage, radiation, x-rays | Category: Hardware, High Voltage, Nuclear, Reviews |  Print This Post |  Email This Post | Subscribe to comments | Leave a comment | Trackback URL

5 Responses to “Terra-P Radiation dosimeter MKS-05”

1. 
   1
   paul:
   December 19th, 2009 at 8:00 pm

   can you tell me more about how you buy from ebay?
   any posibility to buy from a dealer (with warranty)?

2. 
   2
   Radu Motisan:
   December 19th, 2009 at 10:23 pm

   salut paul. cum e cu zapezile in bacau acum?
   de pe ebay poti cumpara simplu, intra pe http://www.ebay.com, fa-ti un cont si mai departe urmareste instructiunile date de ei. cu garantia nu stiu ce sa spun, inca nu mi s-a stricat nimic, in principiu fiecare seller ofera anumite clauze de garantie. atentie la taxele vamale, care se adauga la intrarea in tara. succes!

3. 
   3
   Marcene Kopriva:
   January 8th, 2010 at 10:18 am

   hey nice blog! looking forward to read your new posts!

4. 
   4
   PocketMagic » Radex RD1706 dosimeter:
   April 27th, 2010 at 9:59 pm

   [...] to the Terra-p that I've presented here , the Radex RD1706 is better, in terms of sensitivity, see the next video for a [...]

5. 
   5
   DIY/Homemade Portable Radiation Dosimeter « PocketMagic:
   December 25th, 2012 at 11:07 pm

   [...] radiation dosimeter . I didn't have much need for yet another dosimeter (with my Radex 1706 or Terra-P), but I know there are several people not affording a commercial unit, but wanting to have their [...]

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