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Polimaster PM1704 Operation Manual

Spectroscopic personal radiation detector
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SPECTROSCOPIC PERSONAL RADIATION DETECTOR
РМ1704
OPERATION MANUAL

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Summary of Contents for Polimaster PM1704

  • Page 1 SPECTROSCOPIC PERSONAL RADIATION DETECTOR РМ1704 OPERATION MANUAL...

  • Page 2: Table Of Contents

    CONTENTS 1 GENERAL INFORMATION ......................4 2 INSTRUMENT DELIVERY SET ....................5 3 TECHNICAL SPECIFICATIONS ....................6 4 EXTERNAL INSTRUMENT VIEW. CONTROL KEYS ............12 5 LCD INFORMATION ......................... 14 6 INSTRUMENT DESIGN AND OPERATIONAL PRINCIPLE ..........15 7 SAFETY MEASURES ......................... 17 8 CLIP MOUNTING AND DEMOUNTING .................
  • Page 3 Documented instruments and their electric circuit, internal and external design, as well as software are subject to change in the manufacturing process with no substantial effect on their functionality, technical and metrological performance. Hence, Polimaster reserves the right not to mention it in the current Operation Manual.

  • Page 4: General Information

    Spectroscopic Personal Radiation Detector РМ1704; - Spectroscopic Personal Radiation Detector РМ1704М. DER measurement range of this instrument is more expanded as one of PM1704. Instrument belongs to the family of portable measuring instruments of ionizing radiation that can be operated in laboratories and field conditions.

  • Page 5: Instrument Delivery Set

    2 INSTRUMENT DELIVERY SET Instrument delivery set corresponds to Table 2.1. Table 2.1 Quantity, pcs. Description PМ1704 РМ1704GN РМ1704М Spectroscopic Personal Radiation Detector PМ1704 Spectroscopic Personal Radiation Detector РМ1704GN Spectroscopic Personal Radiation Detector РМ1704М Battery Certificate Quick start Data storage (Operation Manual , User Guide) Package...

  • Page 6: Technical Specifications

    3 TECHNICAL SPECIFICATIONS Technical specifications are given in the Table 3.1. Table 3.1 3.1 Operation modes: - test mode; - background calibration mode; - DER of gamma radiation measurement mode; - search mode (average count rate indication, cps); - menu indication mode; - settings mode;...
  • Page 7 3.10 Anisotropy ( ) of the instrument PM1704М at the gamma DER measurement for  each energy does not exceed the values shown in Table 3.2 when the instrument is irradiated in the horizontal plane at indicated angles relative to the initial position (during the calibration) and does not exceed the values shown in Table 3.3 when the instrument is irradiated in the vertical...
  • Page 8 3.14 Variation coefficient (deviation of instruments readings caused by statistical fluctuations) during DER measurement at confidence probability 0.95, no  10 % more than 3.15 Radionuclide isotope composition identification identified radionuclides are displayed on instrument LCD 3.16 Quantity of registration channels of gamma radiation scintillation spectra 1024 3.17 Energy resolution during registration of...
  • Page 9 3.23 Response time (time to alarm) at dose rate increase by 0,50 μSv/h for 0.5 s produced by Co at the radiation background not more than 0,25 µSv/h, not more than 2 s. Response time (time to alarm) at gradual dose rate increase by 0,50 μSv/h for 0.5 s produced by Cs (The approach speed no more than 0.25 m/s.) at the radiation background not more than 0,25 µSv/h, not more than 2 s.
  • Page 10 60 min 3.36 Weight, no more 0.4 kg 3.37 Overall dimensions (size), no more 130 х 60 х 46 mm Inquire additional information from the manufacturer or visit www.polimaster.com Table 3.4 Source type Parameter name Gamma radiation source activity, MBq 20.0...
  • Page 11 Table 3.5 Source type Parameter name Gamma radiation source activity, kBq (uCi) 55.0 (1.5) 100.0 (2.7) 50.0 (1.35) Speed (source/instrument), m/s 0.50.05 0.50.05 0.50.05 Distance between the source and sensitive detector 0.20.005 0.20.005 0.20.005 surface, m Figure 3.1 – Standard energy response in search mode...

  • Page 12: External Instrument View. Control Keys

    4 EXTERNAL INSTRUMENT VIEW. CONTROL KEYS 4.1 External view External instrument view (by the example of PM1704) is given in the Figure 4.1. Instrument is constructed as monoblock, enclosed in small size sealed container (Bopla type), protected from water jets and dust.
  • Page 13 4.2 Key functions There are four control keys on instrument’s front panel. Keys (Figure 4.1, keys 1 and 3, 2 and 4) are to the right and to the left, at the bottom and up on the keypad. The keys are located so that they correspond to LCD commands.

  • Page 14: Lcd Information

    5 LCD INFORMATION For РМ1704, РМ1704М For РМ1704GN 1 – area to display information signs: – keypad blockage; – connected to the USB; – battery charge level; – audio alarm on/off;  search mode. 2 – area to display instrument operation modes; 3 –...

  • Page 15: Instrument Design And Operational Principle

    6 INSTRUMENT DESIGN AND OPERATIONAL PRINCIPLE Scintillation detector CsI(Tl) with photodiode is used as gamma radiation detection block in РМ1704, РМ1704GN and РМ1704М. Scintillation detector Li(I) with photodiode is used as neutron radiation detection block in РМ1704GN. Detection block with Geiger-Muller counter is used in РМ1704М altogether with detection block with scintillation detector so that to widen DER measurement range of gamma radiation.
  • Page 16 Figure 6.2 – Geometric centers of gamma detector and neutron detector (+), and РМ1704GN direction of calibration Figure 6.3. – Geometric center of gamma detector (+), РМ1704М direction of calibration...

  • Page 17: Safety Measures

    7 SAFETY MEASURES Instrument is electrically safe. Instrument meets the requirements of the Class III State Standard 12.2.091-2002 in relation to the degree of the electric shock protection. All operations of setting, checking, repair, instrument technical maintenance at using of radioactive sources must be done according to local radiation safety norms and sanitary rules of radiation safety.

  • Page 18: Instrument Power

    9 INSTRUMENT POWER Instrument is powered from single battery (АА type). Battery types: - rechargeable  NiMH rechargeable battery of 1.2 V nominal voltage; - non-rechargeable  Alkaline battery of 1.5 V nominal voltage. Users themselves select the type of battery in the settings after the battery placement into the battery compartment.

  • Page 19: Select Battery Type

    9.2 Select battery type Select battery type when the battery is already placed into the instrument. To select battery type use key to enter MENU (instrument menu) (Figure 9.2). keys to select “SETTINGS”; then press SELECT key. While in SETTINGS mode, buttons to select line “5.

  • Page 20: Rechargeable Battery Charging

    PC to exit PC communication mode and unlock the keypad. Figure 9.3 Select "USB Mass Storage Device" line in the opened window and press "Stop" key. Window with list of connected USB devices opens. Select "PM1704 Data USB Device" and press "OK" (Figure 9.4).
  • Page 21 Figure 9.4 Instrument must exit PC communication mode in 5 s after its removal selection through "USB Mass Storage Device", unlock the keypad and activate all its operation modes. When the battery is fully charged or in order to stop powering the instrument from external source disconnect "USB-mini –...

  • Page 22: Get The Instrument Ready For Operation

    10 GET THE INSTRUMENT READY FOR OPERATION 10.1 General information Study carefully this Operation Manual before operation. Take the instrument from the packaging. Protect the instrument from shocks and damages caused by any mechanical effects, hostile environment, organic solvents ad sources of open fire. 10.2 Switch the instrument On Install the battery according to Chapter 9.1.

  • Page 23: Instrument Operation

    11 INSTRUMENT OPERATION 11.1 Instrument Operation Modes  test mode (11.1.1);  calibration mode by ambient radiation background (11.1.2);  gamma radiation DER measurement mode (11.1.3);  search mode (mean count rate indication, cps) (11.1.4);  menu indication mode (11.1.5); ...
  • Page 24 Figure 11.2 Instrument analyzes level of gamma background (and neutron – for PM1704GN) radiation while in calibration mode. Processor counts quantity of pulses incoming from detection block during set calibration time. When user recalibrates the instrument during operation, calibration time can be automatically reduced due to increasing of background level at a time.

  • Page 25: Gamma Radiation Der Measurement Mode

    Figure 11.3 Autocalibration Autocalibration function is switched on using PC communication mode. Autocalibration enables instrument to keep its sensitivity on high level automatically when background level decreases and to avoid false alarms when background level “slowly” increases. Instrument is highly sensitive to radiation level changes.
  • Page 26 Figure 11.4 When set DER threshold is exceeded, analogue scale is filled totally, audio (monotonous double signals with 1 s interval) and light (red LED blinks in time with signal) alarms are activated. Instrument LCD displays message that corresponding threshold is exceeded: ALARM LO/ALARM HI, and measured DER value is displayed in red color.

  • Page 27: Search Mode

    11.1.4 Search Mode Press key to switch instrument from DER measurement mode into this mode. Press another time to return to DER measurement mode. Instrument in search mode calculates current value of average pulses count rate per second (cps) and indicates it on LCD: - in upper area –...

  • Page 28: Detect Gamma And Neutron Radiation Sources

    11.1.4.1 Detect Gamma and Neutron Radiation Sources To detect sources of gamma (and neutron  for РМ1704GN) radiation (further RS) place the instrument so that its back panel (with ledge) faces the tested object. The closer effective center of instrument detector is placed towards to tested object (luggage, person, container, vehicle and so on) and slower it moves alongside the object, the higher RS detection rate is.
  • Page 29 Table 11.1 – Comparative information on instrument operation under normal conditions and when neutron channel alarm threshold is exceeded LCD/Analogue scale Alarm Condi tion РМ1704, РМ1704М PM1704GN Audio Vibro Light Green LED blinks Green segments zone is filled. Yellow zone is filled – value is close to alarm threshold level. Rate of coming In time with audio Red LED blinks...

  • Page 30: Localization Of Gamma Radiation Sources

    11.1.4.2 Localization of Gamma Radiation Sources To locate RS place the instrument near the object at the distance no more than 10 cm. Move the instrument alongside the object no faster than 10 cm/s. The closer RS is, the higher signals repetition rate is.

  • Page 31: Menu Indication Mode

    11.1.5 Menu Indication Mode User enters menu indication mode from gamma radiation DER measurement mode or search mode. Press key under MENU indicated on instrument LCD to enter instrument’s “MENU”. “MENU” displays instrument possible functions (Figure 11.7). Figure 11.7  Calibration mode (11.1.2) ...

  • Page 32: Settings Mode

    11.1.6 Settings Mode key to enter instrument’s MENU and select “SETTINGS” tab (Figure 11.8) to enter settings mode. Figure 11.8 The description of settings mode tabs is given in 1.1.6.1 – 1.1.6.9. 11.1.6.1 Instrument Information keys to select “1.About” while in “SETTINGS” mode to view instrument identification information.

  • Page 33: History Setting Mode

    11.1.6.2 History Setting Mode To enter history setting mode being in “SETTINGS” mode use keys to select “2.History” line. Then open tab HISTORY by pressing SELECT key. Use key, and select the required option for setting:  INTERVAL, min – history recording interval in minutes between two adjacent events in instrument history;...

  • Page 34: Display Settings Configuration

    Figure 11.11 11.1.6.4 Display Settings Configuration keys to select “4. Display” while in “SETTINGS” mode to configure display settings. Then double press SELECT key to open and activate first option setting (Figure 11.12). To go to the next option press NEXT key.

  • Page 35: Set Instrument Date And Time

    11.1.6.6 Set Instrument Date and Time keys to select “6. Date/Time” option while in “SETTINGS” mode to set date and time. Then double press SELECT key to open and activate first option setting (Figure 11.13). To go the next option press NEXT key.

  • Page 36: Search Function On/Off In Measurement Mode. Select Measurement Units

    Figure 11.14 11.1.6.8 Search Function On/Off in Measurement Mode. Select measurement units keys to select “8.Measurement” option to switch on/off search function in measurement mode while in “SETTINGS” mode. Then double press SELECT key to open and activate this setting (Figure 11.15). keys to flag/unflag corresponding check-box to switch “Search in measurement mode”...

  • Page 37: Threshold Setting Mode

     Start timeout, sec – time in seconds for instrument to automatically enter identification mode of radionuclide isotope composition after the set threshold is exceeded (in search or DER measurement in case the option "Search in measurement mode" is ON. If 0 sec is selected, then this option is deactivated.
  • Page 38 keys to select required option for setting: DER threshold values:  hi – DER value at which instrument will display ALARM HI alarm while in DER measurement mode;  "μSv/h", "mSv/h", "Sv/h" (or "kR/h", "μR/h", "mR/h", "R/h") – dimensions of measurement units of set DER threshold level hi;...

  • Page 39: Scintillation Spectra Registration Mode

    11.1.8 Scintillation Spectra Registration Mode to enter instrument’s MENU and select “SPECTRUM” tab (Figure 11.19) to enter scintillation spectra registration mode. Use keys to select tab by scrolling. Select “SPECTRUM” and press SELECT. Instrument will switch into scintillation spectra registration mode.

  • Page 40: Scintillation Spectra Accumulation

    11.1.8.1 Scintillation Spectra Accumulation Attention! Quarterly or after a long-term storage before beginning the operation on the spectra accumulation or on the identification, it is recommended to conduct the testing of the spectrometric calibration of the instrument. Use the Eu source of intensity from 5×10 Bq to 10 Bq.
  • Page 41  “Red arrow” sign means that average count rate of gamma channel is too high (more than 500 cps). Spectrum will be distorted if gamma channel load is high.  “Radiation danger” sign means that average count rate of gamma channel corresponds to optimum load (100-500 cps).
  • Page 42 11.1.8.1.1 Start Identification by Accumulated Spectrum keys to select “IDENTIFY” line. To start identification of radionuclide isotope composition by accumulated spectrum press OK. After some time LCD will display identification report with full list of identified nuclides (Figure 11.23). The report contains identified nuclides data, found peaks quantity (found peaks/general quantity), nuclides types and identification certainty degree.
  • Page 43 Figure 11.24 11.1.8.1.2 Save Accumulated Spectrum To save the accumulated spectrum in instrument’s memory without identification use keys in “SPECTRUM” tab selecting line “Save” (Figure 11.25) and then perform the procedure according to 11.1.8.1.1 describing identification results saving. When pressing keys STOP or EXIT the instrument will exit and go into scintillation spectra registration mode (tab "SPECTRUM", line "New").

  • Page 44: View Mode Of Saved Scintillation Spectra

    11.1.8.1.4 Exit Menu of Scintillation Spectra Accumulation Mode To leave scintillation spectrum registration mode use to select “Back” line (Figure 11.27), and then press OK key. Instrument will continue scintillation spectrum accumulation. New accumulated spectrum is being processed as described above in 11.1.8.1.1. Figure 11.27 11.1.8.2 View Mode of Saved Scintillation Spectra keys to select “Load”...

  • Page 45: Select Of Reference Source For Autocailbration

    Figure 11.29 Press OK or BACK keys and the instrument will go to scintillation spectra registration mode. 11.1.8.3 Select of reference source for autocailbration “Settings” tab of SPECTRUM menu has only “SETTINGS” position and is designed to select the reference source for autocalibration. (Figure 11.30). Figure 11.30 11.1.8.4 Autocalibration Autocalibration is performed to correct instrument calibration coefficients in case of their drifts.

  • Page 46: Reset Of Statistics

    autocalibration at temperatures above 30 ºC (86 ºF). Before carrying out the calibration you should select an isotope for the autocalibration on the "Settings" tab in the “SPECTRUM” menu (for autocalibration is recommended to use a source of Eu with activity of 5 × 10 Bq and 10 Bq.).

  • Page 47: Manual Start Of Quick Identification Of Radionuclide Isotope Composition Mode

    11.1.10.1 Manual Start of Quick Identification of Radionuclide isotope composition Mode Instrument enters mode of quick identification of radionuclide isotope composition from DER measurement mode or search mode when MODE key is pressed. Before starting quick identification, configure identification settings required for identification accuracy. Use keys to select required option for setting in the opened window of quick identification settings (Figure 11.32).

  • Page 48: Automatic Start Of Mode Of Radionuclide Isotope Composition Identification

    LCD displays USB communication sign. Polimaster provides “РМ1704Built-in Software” (further software) for user to work with instrument. It represents software embedded into instrument’s flash memory and requires no installation and additional external media (CD-ROM and so on). Hence software is ready for operation on any PC when instrument is connected to it.
  • Page 49 PC requirements: - IBM PC – compatible PC with Pentium III or higher; - color display 19'; - operation system: MS Windows Vista, MS Windows XP or MS Windows 7; - USB-port. Periphery equipment requirements: - printer (to print reports); - some acoustic system or head-phones (to listen to voice tags of spectrum files).

  • Page 50: Technical Maintenance

    12 TECHNICAL MAINTENANCE Procedures of technical maintenance include the following: - performing preventive maintenance works (external examination, dust removal and decontamination, checking instrument operability (see 10.2 – 10.3). Decontaminate the instrument by wiping it with soft cloth wetted with ethyl alcohol; - replacing the battery.

  • Page 51: Verification Method

    14 VERIFICATION METHOD 14.1 Introduction Current verification procedure covers Spectroscopic Personal Radiation Detectors PМ1704, РМ1704GN, РМ1704М (further instruments). Verification is carried out by local state metrological services according to current standards and correspondingly authorized companies. Verification is done by the manufacturer on-site, after repair, while in service and storage every 12 months.
  • Page 52 14.4 Safety Requirements Any works with radioactive sources must be done according to state and local safety instructions for radioactive sources and other ionizing radiation sources valid at the verification site. The verification process should be considered as work under special conditions. 14.5 Verification Conditions Instrument verification is carried under normal environmental conditions: - ambient temperature...
  • Page 53 5) place the instruments onto the dosimetric unit so that geometrical center of the detector coincides with the reference point where reference DER value equals to 0.8 μSv/h, and start irradiation of the instrument; 6) wait at least 300 s after the irradiation start, and then take 5 DER measurement readings with interval at least 60 s.
  • Page 54 3) move the instrument on the verification unit so that geometrical center of the detector of the instrument being tested, aligns with the reference point where neutron flux density value  is enough for instrument readings range to be from 0.5 to 0.8 of end value of count rate, and then start irradiation of the instrument;...

  • Page 55: Storage And Transportation

    15 STORAGE AND TRANSPORTATION 15.1 Storage Instruments should be stored in a warehouse in original packing without batteries installed. Ambient air temperature is to be from -15 to 50 °С and relative humidity up to 95 % at 35 °С. Instruments storage period should not exceed their average service life (10 years).

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