Radiation Alert MONITOR 4 Operation Manuals
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Radiation Alert MONITOR 4 Operation Manuals

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4 4
Same Monitor 4. New ergonomic
design. The M4 and M4EC are
compact, general purpose survey
meters capable of detecting alpha,
beta, gamma, and x-rays over 3
selectable ranges. A red count light
flashes and a beep sounds with each
event detected. The Monitor 4EC
offers a more linear reading for
gamma and x-rays (above 40 keV).
OPERATION
MANUAL
RoHS

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Summary of Contents for Radiation Alert MONITOR 4

  • Page 1 Same Monitor 4. New ergonomic design. The M4 and M4EC are compact, general purpose survey meters capable of detecting alpha, beta, gamma, and x-rays over 3 selectable ranges. A red count light flashes and a beep sounds with each event detected. The Monitor 4EC offers a more linear reading for gamma and x-rays (above 40 keV).

  • Page 2: Table Of Contents

    OPERATION MANUAL FOR THE MONITOR 4, MONITOR 4EC, AND MC1K Before using this instrument the user must determine the suitability of the product for his or her intended use. The user assumes all risk and liability connected with such use.

  • Page 3: Description

    DESCRIPTION The monitor senses ionizing radiation by means of a GM (Geiger Mueller) tube with a thin mica window. (Note: There is no window on the MC1K). The tube is enclosed inside the instrument. When a ray or particle of ionizing radiation enters or passes through the tube, it is sensed electronically and displayed by a red count light.

  • Page 4: Making Measurements

    Factory calibration is by pulse generator and is typically ±15% of reading, relative to Cesium 137. For calibration to NIST standards, contact the manufacturer, distributor, or a certified lab. Calibration Procedure for the Monitor 4, Monitor 4EC, and MC1K: Remove the four screws on the rear of the case and the one screw inside the battery compartment.

  • Page 5: Technical Service

    MEASURING RADIATION The Monitor 4 and Monitor 4EC detect the four main types of ionizing radiation: alpha, beta, gamma, and x-rays. The MC1K detects gamma and x-rays. They are calibrated to Cesium 137, but also serve as an excellent indicator for many other sources of ionizing radiation.

  • Page 6: Glossary

    entered the market as radioactive rings and other types of gold jewelry. Some imported cloisonne being glazed with uranium oxide exceeds U.S. limits. Some gems are irradiated by an electron beam or in an accelerator to enhance their color. Irradiated gems typically are held until there is no residual activity remaining.

  • Page 7: Specifications

    MONITOR 4 and 4EC Detector for the MONITOR 4 and the MONITOR 4EC: MONITOR 4- Halogen-quenched uncompensated GM tube Thin mica window is 1.5-2.0 mg/cm2 thick. Approx. 1000 CPM/mR/hr for Cesium 137. MONITOR 4EC- Halogen-quenched GM tube. Energy compensated sidewall with 2 mm tin filter. Thin mica window, 1.5- 2.0 mg/cm2 thick.

  • Page 8: Mc1K

    X100 position (5) 0 to 100 mR/hr or 0 to 1 mSv/hr X1000 position (50) 0 to 1000 mR/hr (1R) or 0 to 10 mSv/hr. COMMON SPECIFICATIONS FOR THE MONITOR 4, MONITOR 4EC, AND MC1K Accuracy: Typically ±15% of reading (referenced to Cs-137) Audio: Built-in piezoelectric transducer gives audible beep when switch is in the AUDIO position.

  • Page 9: Limited Warranty

    LIMITED WARRANTY ELEMENTS OF WARRANTY: This warranty covers all materials and craftsmanship in this product to be free from defect for a period of one year with only the limitations or exclusion set out below. WARRANTY DURATION: This warranty shall terminate and be of no further effect one year after the original date of purchase of the product or at the time the product is: a) damaged or not maintained as is reasonable or necessary, b) modified, c) repaired by someone other than the warrantor for the defect or malfunction covered by this Warranty, d) used in a manner or purpose for which the instrument was not intended or contrary to the written instructions or e) is...
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This manual is also suitable for:

Monitor 4ecMc1k

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