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35040
Operators Manual
1-2
WARNING
• The ion chamber bias voltage may be set to one of 11 user-customized settings. The display
indicates the polarity of the central electrode and the actual measured output voltage generated by
the ion chamber bias supply.
• Highly regulated, stable, electronic ion chamber bias supply.
• The level of the internal electronic bias supply is continuously monitored. Annunciators appear on
the display if an abnormal bias voltage level is detected.
• Bright, clear, multi-line alphanumeric display.
• Simplified, uncluttered control panel.
• A wide AC line input range of 100 to 240 VAC and the use of an IEC 320/C13 style receptacle
provide worldwide operation by use of the proper line cord.
• The system may be operated from either AC line power source or from its internal battery. The
battery will be charged from AC line power during use.
• A high performance rechargeable battery system provides 8 hours of continuous operation from a
3-hour charge. A low battery annunciator indicates when 30 minutes or less of operation remains.
• Automatic power-down after a user-specified time period, when operating from battery power.
1.3 Before You Start - Safety Precautions
The Model 35040 Therapy Dosimeter should be used only by people who are:
• Aware of and understand the limitations of the device as they relate to the measurement of
radiation output
• Knowledgeable about safety procedures observed when working with radiation sources, such as
therapy radiation machines
• Aware of safety precautions required to avoid possible injury when using electrical/electronic
equipment
The Model 35040 Therapy Dosimeter is NOT
approved for applications where the sensor or the
dosimeter is in contact with the patient.
Please take the time to read this manual carefully before operating this instrument.
1.4 Safety Symbols And Terms
The following symbols and terms are found on the instrument and used in this manual.
The symbol on the instrument indicates that the user should refer to the operating instructions
located in the manual.
The symbol on the instrument shows that high voltage may be present on the terminal(s). Use
standard safety precautions to avoid personal contact with these voltages.
The heading used in this manual explains dangers that might result in personal injury or
death. Always read the associated information very carefully before performing the indicated procedure.
NOTE