Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 0

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 1

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 2

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 3

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 4

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 5

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 6

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 7

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 8

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 9

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 10

Bicron Surveyor 2000 Geiger counter, 2 probes, certified and calibrated 10/2014, US $550.00 – Picture 11

Bicron Surveyor 2000 Geiger Counter, 2 Probes, Certified And Calibrated 10/2014

US $550.00

Poway, California, United States
Feb 14th

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Here is a Bicron Surveyor 2000 paired with the SWGM Probe (sells for nearly $400 by itself) alpha/beta/gamma end window probe GM probe. It also has an internal energy compensated probe for highly accurate, real-time dosimetry application up to 2 Roentgens/hour; which is a very high range by any standard. Gold-plated angular adaptor (makes it really easy to plug in/unplug probe cables and doesn't tarnish) is included. A 3-5 foot BNC cable will be provided as well. The EWGM probe was factory paired with the meter because it reads 1,200 CPM/mR/hour, meaning all scales can be used to accurately obtain accurate real time gamma dosimetry data in mR/hour! There really isn't an equivalent instrument, particularly when equipped with this probe. I have kept an eye out for a decade. Some instruments have the same range scale, a few have internal probes, but there is nothing like the Surveyor 2000. This counter is "the ultimate combination"; the one counter I have chosen among any and all others. They are in all my field kits, were implemented in to all the labs for which I consulted, and that's because they are great. I trust them, and can attest to the proprietary circuitry being more effective than anything else on the market regarding automatic dead time compensation and adjustment. The 5 scale ranges are just great; you can truly utilize this counter from 0-2,400,000 counts per minute. Nothing else under $1500 even comes close. Please note, an identical probe will be given; although it will have a black face protector and a different serial. This counter comes with a user manual and a technical manual. Modification manual is also available on the net, you can turn this in to an awesome single channel analyzer with about five bucks worth of parts, it's crazy! Exciting too, so be careful. The probe is from the factory; you can determine this with Bicron probes by looking for the brand and model under the connector. I prefer these over pancake probes because of their size; and they don't over respond to low-energy beta nearly so much as a pancake probe. Still, it is a thin window probe, so it needs to be treated like a pancake probe when handling it. Don't poke the window, basically. Since it can both detect alpha radiation and provide real time mR/hour dosimetry, it is a thin window end window probe; which is basically a hybrid pancake-pickle probe. If it is capped, it gives gamma dose in real time. The thin window is more about determination of presence rather than dose. In the little car kit I have (yeah, don't make fun of me) this is precisely what I carry. Even if you don't carry a probe, the internal probe allows it to be used as a high-range gamma dosimeter. Gamma radiation and x-rays are detected through the front and sides of either tube (internal or in the EWGM). The external probe is used to detect alpha, low and high energy beta, and gamma radiation. The gamma dosimeter function reads from 0-2,000mR/hour (which is absurdly high for what hobbyists will encounter) OR 0-2.4 million counts per minute! It has an internal energy compensated probe used on the 1000x scale for real time dosimetry. The external probe is scaled the same, so there is accurate dosing on even the lowest of scales as well. This counter is certified to be used in nuclear medicine labs and nuclear pharmacies, and was part of a compact kit for emergency response. The only time I recall using this one is when a technician spilled some Iodine 125 seeds, and it certainly worked! Aside from that incident, which proved its worth and accuracy, it has been sitting in a box, with internal and external desiccant, being taken out every six months for simple function check and battery swaps by me, then again every year for the full evaluation and calibration. I want to give you folks an idea of just how extensive the functional checks and calibration process is. I don't put my sticker on it unless I would trust it for use in the field. This is not simply sticking it on a pulser and checking it against one source of approximately known activity, and this is not a "long shot ebay mystery purchase" counter. It's pro-grade, and priced at about 1/3 of what a pro would pay for it. The Nuclear Regulatory Commission permits a 20% variance of readings; this counter has less than a 5% variance on both pulser and Cs137 linearity tests with both internal and external probes; that is four times better than what the NRC requires for accuracy of instrumentation at power plants. They aren't always this accurate and precise, it's the luck of the draw. The factory defined test point voltages are all spot on as well, and there were no aberrant signals or oscillations where they should not have been. This model is by far my favorite counter both in the lab and in the field. When I am working with a particularly good device, I actually enjoy the calibration and even the yearly certification process. I'm going to explain exactly what goes in to this process and the type of equipment I use to do it. The variety of sources is not entirely necessary, but I do additional tests for energy compensation that aren't in the manual and make a side note if there's a particular variance in a certain part of the gamma spectrum. Instrumentation: HP oscilloscope BK logic analyzer (not entirely necessary, but allows measurement of multiple circuits simultaneously) HP pulse generator BK function generator for lower scales HP frequency counter BK multimeter with probes of various impedance HP 3 channel DC power supply Eberline SAM-2 (which has both a built in scaler and generates trigger pulses for the pulse generator, a fantastic extra measure of accuracy!) Sources: Cesium 137 sources; 0.615uCi, 8.91 uCi, and (licensed) 38.45mCi (which is about 124 R/hour at 1cm, in case you're curious, although it drops down to about 50mR/hour at half a meter, that's all without shielding though!) Cobalt 60 sources; 0.24uCi, 0.91uCi Iridium 192 source (licensed) 12Ci Iodine 125, approximately 100uCi Americium 241, 0.81uCi Polonium 210, .08uCi Uranium, natural, in various amounts. Probes: The internal energy compensated probe contained within the meter, of course Eberline HP-270 Bicron PGM X2 Bicron EWGM X2 Bicron G1 scintillation probe (with anti-sat bypassed) Bicron G1LE scintillation probe (also with anti-sat bypassed) Other: A little screwdriver to adjust the HV A plastic paintbrush handle to manipulate the internal toggle switch A mini-mag lite, of course. With the exception of the high activity sources and hot lab stuff (which are done in batches, 4 or 5 instruments at a time), the individual meter takes about two hours to calibrate and check thoroughly. Using that many probes is not necessary, but every once in a while some rate meters react a little differently than expected with certain probes. The myriad of sources used ensures true linearity of response and ensures the meter can be used for all purposes; including hobbies, and not just routine surveys. Enjoy. This is the last one I have sitting around and calibrated from a few months back. It is mechanically and electronically flawless, and looks pretty good on the outside and inside especially. Enjoy! Please note... the probe will look slightly different. I couldn't find any pictures of. 2000 mod with a SWGM PROBE Thanks, enjoy!

Condition

Used :

An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections.

Seller Notes

“Restored to new working condition without much effort on my part. Bicron/Thermo has a very stringent set of guidelines in regard to what may and may not be used in professional applications. The university regulations are much more stringent than the plus or minus 20% allowable deviation on any range... I have gone so far beyond what is required; I could swap this with any other instrument in the University of California system and know, with absolute certainty, that the instrument will work when and if it is needed. I have listed some of the extensive process in the auction text.”