Summary of Contents for Doza BDMN-200
- Page 1 Scientific Production Company “Doza” DETECTORS BDMN-200 User Manual AJAH.418266.007RE...
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Page 2: Table Of Contents
Cont ent 1 Description and operation of the product ………………………………….. 1.1 Product functionality …………………………………….………… 1.2 Technical characteristics …………………………………………... 1.3 Configuration ………………………………………….…………… 5 1.4 Design and operation …………..…………………………..……... 5 1.5 Marking and sealing …………………...…………………………... 1.6 Packing ……………………………………………………...……... 2 Intended use ………………………………………………………..…….… 2.1 Operational limitations ……………………………………..………... -
Page 3: Description And Operation Of The Product
1 DESCRIPTION AND OPERATION OF THE PRODUCT 1.1 Product functionality Detectors BDMN-200 AJAH.418266.007 (hereinafter detector) are intended for measurement of the ambient equivalent dose rate of neutron radiation (AEDR). - Page 4 For the description of data exchange registers in the DiBUS protocol see Appendix А. 1.2.11 Operating conditions: operating temperature …………………………………..……………… minus 40 to +50 °C; relative humidity …………..………………..……………..…………..…… 98 % at +35 C; atmospheric pressure ………………………………….……………….… 84.0 to 106.7 kPa; content of the corrosive agents in the ambient air corresponds to the values in table 1.1.
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Page 5: Configuration
2) trisodium phosphate or sodium hexametaphosphate (any detergent) – 10 - 20 g/l water solution; 3) 5 % citric acid solution in rectified alcohol – for connectors and contacts. 1.2.23 Overall dimensions of the detector, not more than: with handle …………………………………………………..………..316×240×290 mm; with light-weight attachment fitting ………………………..………….. - Page 6 Not e – Typical value of sensitivity coefficient is K = 2.0·10 Sv·h ·s and that of “dead time” is M = 23.0 s. Sensitivity coefficient and “dead time” are written in the nonvolatile memory of the detector at the time of adjustment. Reading and changing of these parameters, as well as other adjustment and calibration operations are performed using the “TETRA_Checker”...
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Page 7: Marking And Sealing
For the description of data exchange registers in the DiBUS protocol see Appendix A. Detailed description of the DiBUS protocol is available on the website of the manufacturer www.doza.ru. 1.4.7 Detectors require external stabilized power supply. Wiring diagram is presented in the Appendix B. -
Page 8: Use Of A Product
Converter PI-02 RS-485/RS-422 BDMN-200DD/ BDMN-200PD ~220 V, 50 Hz Figure 2.1 – Connection of detectors 2.2.2 Apply power supply voltage. 2.2.3 Start the “TETRA_Checker” software on the PC as described in the User Manual (Appendix D) and make sure that detector parameters have being correctly read. The detector operability can be checked by presence of indication of measurement result in corresponding window of the “TETRA_Checker”... -
Page 9: Maintenance Routine
3.3 Maintenance routine 3.3.1 Maintenance is divided into routine and periodic. 3.3.1 Routine maintenance 3.3.1.1 Routine maintenance is carried out during regular operation; it includes inspections of detectors for timely detection and elimination of factors which can compromise their operability and safety. -
Page 10: Safety Precautions
4.3 Safety precautions It is necessary to follow safety requirements described in section 3.2 and in documentation accompanying calibration tools and equipment. 4.4 Conditions 4.4.1 The following normal operating conditions shall be met during calibration: air temperature ……………………………………….…….…………………. +(20 ±5) °C; relative air humidity ……….……………………….…..……..……...…... -
Page 11: Routine Repairs
If the relative error exceeds limit, perform correction of sensitivity coefficient and “dead time” in accordance with the section 2.4. It is recommended to perform correction of sensitivity coefficient using the range 10 to 100 Sv·h , the “dead time” is fixed at 23 s and is not changed during calibration. - Page 12 8.2 Decontamination shall be attempted in cases when the detector surfaces contamination (including surfaces accessible during repair) can be reduced below allowable limits. In case the radioactive contamination exceeds allowable limits, requirements set forth for the radioactive wastes become applicable to the detectors. 8.3 Detectors accepted for operation after decontamination are subjects for repair or replacement in case of failure.
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Page 13: Appendix A Description Of Data Exchange Registers Using The Dibus Protocol
Appendix A (Reference) DESCRIPTION OF DATA EXCHANGE REGISTERS IN THE DiBUS PROTOCOL А.1 Data for reading from and writing to the detectors Data for reading from and writing to the detectors are interrogated in accordance with indices indicated in the table A.1. Table A.1 –... - Page 14 Type Index Description Name (number) Dynamic parameters 0×71 Alarm threshold Single (25) 0×73 Preliminary threshold Single (25) 0×75 Bottom threshold Single (25) 0×77 Algorithm (0 – “Following”; 1 – “Sliding”) Single (25) 0×79 Interval quantity (Sliding) 1 - 60 Single (25) 0×7b Interval time (Sliding) 1 –...
- Page 15 Table А.3 - Description of flags of the status register 0×18 Flag Purpose 1 – Short circuit 1 – Detector is out of order Reserved Reserved 1 – Malfunction of the nonvolatile memory 1 – “Alarm threshold” exceeded 1 – “Preliminary threshold” exceeded 1 –...
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Page 16: Appendix B Wiring Diagram
Appendix B (Reference) WIRING DIAGRAM Item Description Q-ty Note designation Divider AJAH.418289.007 Photomultiplier tube FEU-35-1 Amplifier AJAH.418288.007-04 Voltage multiplier AJAH.418289.005 Regulator AJAH.418283.012 Detector ZnS 30x4 mm LED L-34HD “Kingbright” Plug RS10TV Socket EHR-3 “JST” Socket EHR-2 “JST” AJAH.418266.007RE... -
Page 17: Appendix C Outline Drawing
Appendix C (оbligatory) OUTLINE DRAWING Detector module FVKM.305615.001 Figure С.1 – Portable version of the detector (with handle) 4 holes Ø6,5 Figure С.2 – Detector with light-weight attachment fitting AJAH.418266.007RE... - Page 18 Neutron Moderator Wall mounting 4 holes Detector module Figure С.3 – Detector with wall mounting AJAH.418266.007RE...
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Page 19: Appendix D Software "Tetra_Checker" User Manual
Appendix D (Obligatory) SOFTWARE “TETRA_Checker” USER MANUAL Cont ent D.1 Purpose of the software …………………………….…….……... 19 D.2 Description of the interface …………………...………….……... 19 D.2.1 Overview of the main window ………………...…………. D.2.1.1 “Parameters” button …………………………….……… D.2.1.2 Information panel……………………………….…….… D.2.1.3 “Measuring data” panel ………………………..………. D.2.1.4 “Device status”... - Page 20 Figure D.2.1 - Overview of the main window D.2.1.1 “Parameters” button The “Parameters” button is located in the upper right corner of the main program window. Pressing the button “Parameters” displays a window shown in figure D.2.2. Figure D.2.2 – Overview of the window “Parameters” AJAH.418266.007RE...
- Page 21 The following can be done using the window “Parameters”: selection of the serial port to which the device is connected; setting extra waiting time of device’s reply which may be necessary when additional devices (radio modems, protocol convertors etc.) are present in the information channel (between the device and personal computer);...
- Page 22 D.2.1.5 “Device parameters” panel D.2.1.5.1 The “Device parameters” panel contains information about static parameters, which are not used in the measurements process, and dynamic parameters, which define measurement characteristics of the device, and also general information about the device operation. D.2.1.5.2 Static parameters: Device address;...
- Page 23 “GET PARAMETERS…F3” – when the button F3 is pressed values of parameters on the “Device parameters” panel are refreshed; “SET PARAMETERS…F2” – when the button F2 is pressed new values of the dynamic parameters are written into device. At the same time parameter “date of correction of parameters” is automatically set to current date.
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