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Electronic Control Concepts 8700 Instruction Manual

X-ray pulse counter / exposure time meter
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X-RAY PULSE COUNTER / EXPOSURE TIME METER
INSTRUCTION MANUAL
MODEL 8700

TABLE OF CONTENTS

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Summary of Contents for Electronic Control Concepts 8700

  • Page 1: Table Of Contents

    MODEL 8700 X-RAY PULSE COUNTER / EXPOSURE TIME METER INSTRUCTION MANUAL TABLE OF CONTENTS OVERVIEW DESCRIPTION GENERAL INSTRUCTIONS BATTERY REPLACEMENT WARRANTY CALIBRATION SERVICE INFORMATION EXPOSURE TIME CONVERSION CHART SPECIFICATIONS APPENDIX db:\8700c\manual_8700c...

  • Page 2: Overview

    5)Multi character display makes operation and understanding of results easier. DESCRIPTION The ECC Model 8700 X-ray Timer/Counter is used to measure the duration of radiation output produced by X-ray generators. The ECC Model 8700 is a solid-state, digital in- strument designed specifically for service personnel in assessing the performance of radiation generator timing controls.

  • Page 3: General Instructions

    The most convenient way of using the 8700 is to place it directly under the x-ray head, step back, take the exposure and then read the exposure time in pulses or millisec- onds. It is important that the user be thoroughly familiar with the contents of this manual be- fore performing any tests on radiation generating equipment.
  • Page 4 To minimize the error from preheat ra- diation, increase the distance from the x-ray source to the 8700 or put an aluminum fil- ter over the front of the instrument.

  • Page 5: Battery Replacement

    BATTERY REPLACEMENT The Model 8700 is supplied with one 9 Volt Alkaline battery. Replace the battery when the "Lo Bat" indicator shows in the display. Any standard 9 Volt Alkaline battery can be used in the 8700. To meet the battery life specification, please use a Duracell MN1604 Battery.
  • Page 6 Electronic Control Concepts 160 Partition Street Saugerties, NY 12477 Page 6...

  • Page 7: Exposure Time Conversion Chart

    EXPOSURE TIME CONVERSION CHART Impulses Time Time Time in Seconds in Seconds in Seconds 0.02 0.02 0.01 0.03 0.04 0.02 0.05 0.06 0.03 0.07 0.08 0.03 0.08 0.04 0.12 0.05 0.12 0.14 0.06 0.13 0.16 0.07 0.15 0.18 0.08 0.17 0.08 0.25 0.13...

  • Page 8: Specifications

    Model 8700 SPECIFICATIONS Accuracy  AC Input / X-ray Pulse - +/- 1 Count  DC Input - 1% +/- 1 Count o Measures at 50% of peak value Sensitivity  AC Input - 90 VAC minimum  X-ray input - 40kVp, 3mA at 5 cm from top surface of case, pointed to target on case.

  • Page 9: Appendix

    APPENDIX X-RAY WAVEFORMS This section has been added to the manual to assist users of the ECC Model 8700 Pulse Counter / Exposure Time Meter. Understanding the material in this section will enable the user to obtain the correct exposure time for any x-ray.
  • Page 10 2/10 second, the actual exposure time should be around 200 milliseconds. It is important to note that the 8700 will end the count at the end of the x-ray when the intensity drops below about 70% of the peak value. This is done to ensure an accurate count when there is a ”tail”...

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