STEP OD-02 Technical Description And Operating Instructions
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STEP OD-02 Technical Description And Operating Instructions

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Technical description and operating instructions
Technical description and operating instructions
Survey meter OD-02
Rev 7 from 27 July 2016
Survey meter
OD-02
OD-02 Hx
STEP Sensortechnik und Elektronik Pockau GmbH
Siedlungstrasse 5-7
D-09509 Pockau
1

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  • Page 1 Technical description and operating instructions Survey meter OD-02 OD-02 Hx STEP Sensortechnik und Elektronik Pockau GmbH Siedlungstrasse 5-7 D-09509 Pockau Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...
  • Page 2 Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 3: Table Of Contents

    Table of contents OD-02 Product characteristics / scope of services ....... 4 Safety instructions ................5 Components ..................6 3.1. Control elements ......................7 3.1.1. Meter switch (15) ....................8 3.1.2. Zero adjuster (16) ....................8 3.1.3. “Light / Reset Dose / Reset Max Dose rate” button (12) ........8 3.1.4.

  • Page 4: Product Characteristics / Scope Of Services

    1. OD-02 Product characteristics / scope of services The OD-02 is an easy-to-handle survey meter for measuring the directional dose & ′ ′ / dose rate equivalent and the ambient dose / dose rate Ω Ω & equivalent of mixed radiation fields (X-rays, gamma and beta radiation).

  • Page 5: Safety Instructions

    Statutory provisions for regular re-tests of mobile equipment must be observed for the optional power supply according to BGV A3! Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 6: Components

    3. Components The basic equipment of the OD-02 / OD-02 Hx includes: Device carrier (1) Connecting cable 0.7 m (2) Probe with detachable probe cable (3) Display and control unit (4) Wall reinforcement cap (5) Fig. 1 OD-02 Standard components (scope of services)

  • Page 7: Control Elements

    18 USB connection 19 Switch for internal and external power supply (optional) 20 Safety fuse (optional) 21 Probe connection Fig. 4) Control elements and connections device front side Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 8: Meter Switch (15)

    4 and 5. 3.1.2. Zero adjuster (16) The zero adjuster permits electrical zero balancing of the OD-02 (see chapt. 4.1) in cases where the electrical zero lies beyond the pre-adjusted range. 3.1.3. “Light / Reset Dose / Reset Max Dose rate” button (12) The display backlight is switched on by briefly pressing the “Light“/Reset Dose/Reset...
  • Page 9 13 “History Table / switch dose, max dose rate” and holding it for a while (about 4 sec., see fig. 7 and 8). Fig. 7) Mode “dose rate“: Display “Accumulated Dose”. Fig. 8) Mode “dose rate“: Display “Max dose rate”. Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 10: External Power Supply (Option)

    3.1.5. External power supply (option) The OD-02 can be operated by means of an internal (batteries) as well as by means of an external DC voltage supply (4 .. 6.2 V). Therefore, the switch for internal and external power supply (19) must be set to the respective operating mode (“PS” for power supply mode and “Batt.”...

  • Page 11: Measuring Principle

    The separate detection of the dose equivalents H*(10) and H’(0.07;Ω) with the OD-02 is carried out by means of measurements with or without wall reinforcement cap (5): H ′ &...

  • Page 12: Electrical Zero Adjustment

    The measured unit of OD-02 Hx is shown in first line of display: The factor of the applied ionisation chamber of OD-02 / OD-02 Hx amounts to approx. 4.2 fA/µSv⋅h The current generated by the ionisation chamber is transformed into processable voltage by means of the probe electronics.
  • Page 13 If the automatic adjustment lies beyond this range, the following message appears on the display: Fig. 13) Zero adjustment beyond the specified range Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 14: Calculated Air Pressure Correction

    ⋅ ⋅ Torr Air pressure in kPa / torr ϑ Temperature in °C. The corrected measuring value M results from: ⋅ Indicated measuring value Correction factor Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 15: Measurement Preparation And Performance

    After the removal of a wall reinforcement cap, care must be taken that the marks on the wall reinforcement cap coincide with the marks on the soft radiation chamber at fitting (fig. 14). Fig. 14) Interlock of the wall reinforcement cap Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...
  • Page 16 / 90° to probe Beta radiation ≥ 160 keV Only qualitatively The measured unit of OD-02 Hx is shown in first line of display: Caution! The entry windows of the soft radiation chamber are sensitive to mechanical stresses! After measurement completion, the acrylic plastic shielding must be refitted on the probe and the device must be switched off.

  • Page 17: Dose Rate Equivalent Measurement

    “Dose” should be select- The function “Reset dose” of the button 12 is only active in the measuring mode “Dose rate”. Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 18: Dose Measurement

    “dose”, the display of the dose value > 1999 µSv (see fig. 18 b) is kept also without radiation field and must be reset for a new measurement according to point 5.3. Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 19: Special Remarks For Measurement Performance

    Optional für OD-02 Hx: The calibration of the survey meter OD-02 Hx is carried out at 1.25 MeV (Co-60) (homogeneous radiation field). The point of reference (chamber centre of gravity) is marked on the detector by means of a line.

  • Page 20: Note On Battery Lifetime

    A long-term period with inserted batteries must be avoided as the contact materi- al may be affected by electrolyte leakage. Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 21: Use Of The Device Carrier

    The probe must be fixed in the device carrier according to fig. 20 and secured by means of the locking screw. Subsequently, the probe and the display unit can be reconnected with each other via the probe cable. Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...
  • Page 22 Fig. 23) Disconnection of the plug connectors measuring probe cable. Measuring probe and display unit must be separated at disconnected state only! When separating, do not turn the connector out of position. Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 23: Storage, Handling And Transport Instructions

    Polystyrene solving agents, such as fuel, benzol or acetone containing substances, must not be used. 8. Service Inspections and recalibrations shall be performed by the manufacturer only. STEP Sensortechnik und Elektronik Pockau GmbH Siedlungsstraße 5-7 D-09509 Pockau-Lengefeld Phone: 037367 / 9791...

  • Page 24: Technical Data

    With wall-reinforcement cap 100 keV ... 15 MeV (> 15 MeV with acrylic plastic for H*(10) shielding) Photons OD-02 Hx - Without wall-reinforcement cap 6 keV W 100 keV - With wall-reinforcement cap 100 keV ... 15 MeV (> 15 MeV with acrylic plastic...
  • Page 25 Relative air humidity max. 80 % EMC test According to EN 61000 The manufacturer reserves the right to any modification of the specifications in terms of technical progress. Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 26: Appendix

    1,10 101,3 102,7 104,0 1,05 1,00 0,95 0,90 Temperatur ϑ/ °C Energy dependent response OD-02: without wall-reinforcement cap for H'(0,07) with wall-reinforcement cap for H*(10) 1000 10000 100000 Photon energy in [keV] Technical description and operating instructions Survey meter OD-02...
  • Page 27 Energy dependent response OD-02 Hx ohne Wandverstärkungskappe mit Wandverstärkungskappe 1000 10000 100000 Photonenenergie in [keV] Angular dependent response for photon radiation Winkelabhängigkeit des Ansprechvermögens Angular dependent response ° ° ° q / q ° ° ° ° A 20 (16 keV)
  • Page 28 Relative response for various beta energies (characteristic values) Relative Direction of Radiation Isotope Energy in keV response incidence Beta Sr-90/Y-90 0.70 axial Beta Kr-85 0.30 axial Beta Pm-147 0.20 axial Technical description and operating instructions Survey meter OD-02 Rev 7 from 27 July 2016...

  • Page 29: Operation Sheet Od-02

    Operation sheet OD-02 / OD-02 Hx Type: OD-02 OD-02 Hx Serial number: _______________________________ External power supply available  not available  Internal software version: _______________________________ Final inspection date: _______________________________ Delivery date: _______________________________ Notes: __________________________________________ __________________________________________ __________________________________________ __________________________________________ __________________________________________ __________________________________________ __________________________________________...

  • Page 30: Ce Declaration Of Conformity

    For product evaluation in regard to electromagnetic compatibility, paragraphs of the following standard were used as a basis: EN 61000 This declaration is transmitted on behalf of the manufacturer STEP Sensortechnik und Elektronik Pockau GmbH Siedlungsstraße 5-7 D-09509 Pockau-Lengefeld Dr. Werner Schüler,...

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Od-02 hx

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