Rotem RAM SURF Operating Manual

Rotem RAM SURF Operating Manual

Surface contamination meter

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RAM SURF
Surface Contamination Meter
Operating Manual
Document #PRIR72S0-100902.DOC
Version 3.3 – September 2010

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Summary of Contents for Rotem RAM SURF

  • Page 1 RAM SURF Surface Contamination Meter Operating Manual Document #PRIR72S0-100902.DOC Version 3.3 – September 2010...
  • Page 2 RAM SURF / Operating Manual Page 2...
  • Page 3 For air delivery, the detector should be placed in a sealed container to ensure gradual changes in pressure, which otherwise may cause irreparable damage to the GM tube. ROTEM Industries Ltd. reserves the right to change specifications without advance notice. Page 3...
  • Page 4: Table Of Contents

    3.3. General Functions ......................10 3.4. Threshold Selection ......................10 3.5. Alarms ..........................11 3.6. Push-buttons Function ....................... 12 4. Power Supplies ........................13 5. Calibration .......................... 14 6. Measuring Units Selection ....................14 RAM SURF / Operating Manual Page 4...
  • Page 5: The Surf Meter

    10 preset threshold values. When the meter is turned off, the last threshold value is kept in memory. The RAM SURF meter can be placed in a holder. The detector surface is covered with a cap for protection against mechanical damage.
  • Page 6: Ordering Information

    Ordering Information Item description Model No. RAM SURF (including meter, detector, cable, holder and cover cap) BAK-2080 BAK-2090 RAM SURF meter cps BAK-2085 RAM SURF meter cpm BAK-2086 RAM SURF detector (GM-10) with telephone connector BAK-1171 RAM SURF holder BAK-2190...
  • Page 7: Specifications

    0 to 1 cps 0 to 50 cpm Sensitivity (Cs-137) Approx. 5.8 cps/Sv/h (58 cps/mR/h) Approx. 350 cpm/Sv/h (3500 cpm/mR/h) Count rate range 0 to 42,000 cps 0 to 999,000 cpm 15% of reading Accuracy Page 7 RAM SURF Operating Manual...
  • Page 8 0.15 0.04 1700 I () 7.56 I () 4600 Th () 5400 Am () * Minimum Detectable Level calculations are based on background reading of 1 cps, and the confidence level is 99%. RAM SURF / Operating Manual Page 8...
  • Page 9 Tc () 580+2280 1446 21.7 1.57 0.06 Y() 0.27 Cl () 1160 6.42 0.21 Pb () * Minimum Detectable Level calculations are based on background reading of 50 cpm, and the confidence level is 99%. Page 9 RAM SURF Operating Manual...
  • Page 10: Operating Instructions

    3, 4, 5, 10, 20, 50, 100, 200, 300, 500 [cps] 200, 250, 300, 350, 400, 1000, 5000, 10.0E, 20.0E, 999E [cpm] To choose the required threshold value, proceed with the following steps: RAM SURF / Operating Manual Page 10...
  • Page 11: Alarms

    If the reading exceeds threshold value and then decreases below 75% of threshold value, the ALr. LCDs and the beep sound are automatically cancelled, even though the SPEAKER push-button has not been pressed. Page 11 RAM SURF Operating Manual...
  • Page 12: Push-Buttons Function

    Displays / advances threshold RESET Long press Out of threshold mode saving new threshold RESET Short press Out of threshold mode resuming old threshold RESET& Measuring units selection (refer to section 5) SPEAKER RAM SURF / Operating Manual Page 12...
  • Page 13: Power Supplies

    Figure 5-1. RAM SURF Battery Compartment 4.2. External Power Supply The RAM SURF equipped with an external dc input. It can be operated either with a 9V battery or an external 9V DC power supply. The battery can be used in conjunction with the external power supply.
  • Page 14: Calibration

    5.1. Calibration with a Contamination Source Calibration should be performed by an authorized technician. 5.1.1. To calibrate the RAM SURF meter, use U9 dip-switch on the CPU board. 5.1.2. Expose the detector to a Beta source to calibrate the meter to contamination measurement (cps or cpm) ( Tc source whose activity is 50 to 250 Kdpm).
  • Page 15: Measuring Units Selection

    U22 - CPM-uSv/h (not in use in this meter) Each press on the SPK push button will move from one to other measuring unit. To save the new measuring unit Press on the LIGHT& SPK for 10 second again. Page 15 RAM SURF Operating Manual...

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