Tenmars TM-91 User Manual Download Page 1 | Manualshive

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Summary of Contents for TM-91

Page 1: ...TE TIMARS RADIATION METER TM g1 TM 92 C HB2TM91 00000 TENMARS ELECTRONICS CO LTD ...

Page 2: ...iger counter is also included lf the following instructions are followed your radiation monitor will give you many years of reliable service The radiation meters are very sensitive pieces of equipment Although housed in a high impact case the Geiger Mueller tube that senses radiation is fragile lf the unit is dropped the G M tube may break Exposure of the unit above 40t 100 F may also cause the G ...

Page 3: ...ean it with a towel and allow unit to air dry for several days do not place in an oven or microwave Do NOT back coverto bemoved onlY bY qualified service technician internal operating voltage is over 400VDC ln order to avoid reading incorrect data please replace the battery immediately when the symbol l l appears on the LCD ln order to avoid the damage caused by contamination or static electricity...

Page 4: ...m h 1 9 99mRem h TM 92 Alarm function alarm set default 0 50pSv h can set 0 19 99pSv h TM 91 alarm set default 0 SpSv h can set 0 199 9sSv h TM 92 Auto Power Off function set time default 30 min can set 0 60min 0 min disable auto power off Low battery indication l l Power 9V battery NEDA 1604 IEC EN 6 6F22 or JIS 006P Battery Life About 50 hours Alkaline battery Over load display OL Accuracy 20o o...

Page 5: ...alue press the A buttonor V EN 8 button change the digit value Auto power off setting the initial value is 30 minutes Press again button more than 1 second to enter setting buzzer ON or OFF the setting default is always ON the LCD display ON or OFF press the l button or v button change the ON or OFF Press again button more than 1 second to enter setting calibration facfor the LCD display CF first ...

Page 6: ... the open slots in the case should be positioned in such a way that they are exposed to the object see Figure 1 Figure 1 EN 10 lf the unit shows a significantly higher reading with increasing beep sound volume in this position you can be certain that the object is emitting Beta radiation Now position the unit as shown in Figure 2 ln this position where radiation cannot pass directly through the sl...

Page 7: ...o gamma beta and X ray radiation but not necessarily to etremely low energy forms or alpha neutron or microwave radiation Do not open Geiger counter or otherwise tamper with or attempt to service it 8 INTERACTION OF RADIATION WITH MATTER The particles and photons that result from nuclear decay carry most of the energy released from the original unstable nucleus The value of this energy is expresse...

Page 8: ... and can drift through great thickness of material without incident A free neutron drifting through space will decay in an average of 11 7 minutes yielding a proton and an electron beta ray The neutron can also combine with the nucleus of an atom if its path carries it close enough When a neutron is absorbed into a nucleus it is saved from its ultimate fate decay but may render the nucleus unstabl...

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