Direct Read Dosimeter

What is a Pocket Dosimeter? How does it Work? Specs Range & Model Info Photon Energy Response Request Info Pricing Info Protective Hard Window Reading a Dosimeter Wearing a Dosimeter Charging a Dosimeter
"Licensed from the U.S. Government under Patent No. 5,426,305 " PDF file on Models & Use
What is a Pocket Dosimeter?	Direct Read Pocket Dosimeter
Arrow-Tech dosimeters are rugged, precision instruments about the size of a pocket fountain pen, which are used to measure accumulative doses or quantities of gamma & X-ray radiation. A metal clip is used to attach the dosimeter to an individual's pocket or to any available object in an area to be monitored for total radiation exposure.
It is pocket-size, conductive-fiber electroscope with an ion chamber for detecting and indication integrated exposure to gamma and x-radiation. It has a thin wall which permits the penetration and detection of radiation.

Range and Model Information

Range	Arrow-Tech Model	All model cane be ordered with the added protective Sapphire Window to protect the lens from being scratched. BUY NOW.. E-mail: arrowt@utma.com There are price breaks for volume orders. Contact us and request either a printed catalog or a CD-ROM.version to be sent to you. BUY NOW..

0 - 200mR	138

0 - 2 mSv	138-S
0 - 500mR	500
0 - 5 mSv	500-S

0 - 2R	720
0 -5R	725
0 - 50 mSv	725 S
0 - 20R	730
0 - 100R	740
0 - 200R	742
0 -600R	746

If your Dosimeter is going to be used in harsh conditions where scratching of the lens is a concern we recommend a synthetic sapphire window to protect the lens even in the toughest of conditions.

Arrow-Tech, Inc. recommends a yearly calibration of the Direct Reading Dosimeter which is generally consistent with good health physics practices. More frequent calibration may be necessary should the user’s license require a shorter calibration interval.

How does the Dosimeter work?
Reading a Dosimeter The way we "read" a dosimeter is to just point it at a light source so that we can look through it and see the scale. The conductive fiber moves across a very clear well marked scale that produces the reading.
Arrow-Tech dosimeters use an extremely sensitive fiber electrometer type voltmeter and a small volume of air to measure the total amount of radiation to which the instrument has been exposed. A reading may be made at any time by merely looking at a source of light through the eyepiece end of the instrument. The reading here is at zero. This particular dosimeter is the 200 mR model.
		The graduated scale shown is what is viewed when looking through the Dosimeter
Wearing a Dosimeter You can wear the dosimeter like a pen in your pocket, or clip it to your belt. You can also set it outside for an hour, this will tell you the radiation rate. You don't have to have a radiation meter if you have a dosimeter and are not in a hurry to measure the rate.
Also, if ten or a hundred people are together or going somewhere, only one or two of them need to wear a dosimeter. So long as they all stay together, the radiation dosage that one gets will be what they all get. It is nice to have two or three, so that you can use one to check the other and make sure that they are working.
The dosimeter is charged (reset to zero) so the dosimeter can be used over and over again. This is usually done before each use. Click here for instructions on charging the dosimeter.

Specifications

Radiation Detected:	Gamma and X-ray from 16 KeV to 6 MeV
Ranges:	0 - 200 mR to 0 - 600 R
Energy Response:	See Response curve below
Detector:	Fiber electrometer mounted in an electrically conducting plastic ion chamber
Detector Housing:	Very low permeability plastics - hermetically sealed
Accuracy:	Within + or - 10% of true exposure
Rate Response:	Dose rate independent for gamma and x-radiation
Electrical Leakage:	Less than 0.5% of full scale for 24 hours at 50 degrees C

Superior Energy Response: 16 KeV to 6 MeV
Rugged: Meets ANSI Specifications N13.5 and N322-1997
Low Electrical Leakage

.Direct Reading (Pocket) Dosimeter

Range and Model Information

Specifications

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