Fluke-biomedical 451P User Manual download pdf (Page 26)

451P

Operators Manual

The operation portion of the firmware performs all of the control functions needed

to read and control the electrometer and range change amplifier, calculate

radiation rate, and display the calculated values on the LCD Display. In addition,

the measured data are smoothed and displayed in an exponential manner with

time that simulates the rise and fall time of an ordinary meter display. Range

changing is performed automatically. If a large increase in signal is detected, the

range changing skips to higher ranges bypassing exponential rise with time to

get to the new reading quickly. The Survey Meter continually integrates the

detected radiation signal and saves the accumulated amount that may be read

by the operator at any time. The operator may also reset the integration process.

When the RS-232 cable is attached to the Survey Meter, the Survey Meter

detects its presence and runs the communications portion of the program. The

communication parameters are 1200, N, 7, and 1. Serial communications are

performed in software rather than using a hardware device. The operation

program can be run from communications in the Test mode.

Maintenance

Very little maintenance is required for the Survey Meter, but some periodic

attention may be necessary, especially if the Survey Meter is used in harsh

industrial conditions.

 Warning

To prevent possible electrical shock, fire, or personal injury:

• Do not operate the Product with covers removed or the

case open. Hazardous voltage exposure is possible.

• Use only specified replacement parts.

• Have an approved technician repair the Product.

• Only assemble and operate high-pressure systems if you

know the correct safety procedures. High-pressure liquids

and gases are hazardous and the energy from them can be

released without warning.

• Many components on the printed circuit board are static

sensitive. Obey all ESD precautions when you touch the

printed circuit board assembly.

Routine Cleaning

Do not immerse the Survey Meter. The Survey Meter is not waterproof; liquid

could damage the circuits. The Survey Meter should be kept clean and free from

dirt and contamination. To clean the Survey Meter, wipe with a damp cloth using

any commercially available cleaning or decontaminating agent.

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Fluke-biomedical 451P User Manual Page 26