Capintec CRC-712MH, Руководство пользователя

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CAPINTEC, INC. CRC
®
-712MH
CHAPTER 3
GENERAL OPERATING INSTRUCTIONS
GENERAL
This section describes the features and general operating procedures for the front panel
controls and the back panel connectors.
PANEL DESCRIPTIONS
Front Panel
General selection and control functions are briefly described. The specific function of each
control will be provided in the appropriate sections of this manual.
Range Selection Push-Buttons
These 8 buttons manually or automatically set the activity measurement range. The
display will be blanked if the push-button selected does not correspond to the units of
measurement or if none of the push-buttons are selected. The correct measurement
range will be automatically set if the
ZERO , BKG , or TEST push-buttons are selected.
A
Digital Readout
Chamber activity is presented to the operator on the four-digit, seven-segment
numeric display and unit indicators. The placement of the decimal point and
illumination of the proper units is done automatically. Blinking digits indicates an
activity above the warning level. (Reference CHAPTER 2: FUNCTIONAL &
TECHNICAL DESCRIPTION; SECTION: PERFORMANCE, DIGITAL READOUT)
B
TEST Push-Button
When this button is pressed, the Ionization Chamber bias battery voltage is
displayed. The reading should be between 140 and 180 volts. This also gives a
general check of the system's functions.
C
ZERO Adjust
This is a multi-turn potentiometer that compensates for the offset voltage of the
amplifier in the chamber base. It is always active and therefore is equipped with a
locking ring. Adjustments are made with the
ZERO push-button depressed and the
locking ring rotated counter-clockwise.
D
PRINT Push-Button
When this button is pressed, the currently displayed activity measurement, units of
measurement, selected isotope name, and the number of the Ionization Chamber
selected is output serially from the calibrator.
E
December 09 GENERAL OPERATING INSTRUCTIONS 3 - 1