Doran GuardianXL, Installation And Instruction Manual

Page: 6 / 87

5
Standard Features
The Doran GuardianXL is a full-featured digital weight Indicator with a number of
advanced features including dual displays, keypad data entry, set points, accumulators,
ID, date & time and serial data communications capability. NTEP approved to 10,000
divisions, the
GuardianXL calibration and pushbutton features can be accessed via the
front panel using a pass code. NTEP integrity is maintained by an audit trail feature that
records all metrological activity. Powered by external rechargeable battery or AC line
power, the
GuardianXL carries approvals from NTEP and Factory Mutual.
¾ Dual Displays – Bright, highly visible, 1” high, 6 digit, red LED display is the
primary digital weight display. A two line, 32 character, alphanumeric, backlit
Liquid Crystal Display (LCD) provides custom messaging for excellent user
feedback, including Mode, Status and Units.
¾
Zero – Pushbutton ZERO up to 100% of scale capacity.
¾ Tare – A tare value can be entered in two ways – pushbutton tare or digital tare entry.
¾ Keypad Data Entry – Numeric keypad for digital entry of tare and set point values.
Numeric pushbuttons have dual function to access pushbutton indicator functions.
¾ Gross/Net – Display gross or net weight at the push of a button
¾ Units – Selects up to 6 weight display units – lb, kg, g, oz, lb&oz or user units.
¾ Print – Activates a serial data transmission to external devices
¾ Accumulator and Counter – automatically accumulates gross and net weight.
Standard print string available for accumulator and counter output.
¾ Time & Date
¾
Digital Calibration – Set via front panel with operator pass code, and recorded in
two audit trail memory. Select any capacity value and the corresponding resolution
will be automatically selected. Zero and Span are independently set, allowing for
easy calibration in large scale filling or hopper applications.
¾ Resolution – Display resolution from 200 to 50,000 divisions.
¾ Update Rate – Select from 5.5 to 11 updates/second
¾ Digital Filters - Wide selection of digital filter settings for maximum stability in the
presence of vibration or air movement.
¾ Auto Zero Tracking feature compensates for small changes in zero and is selectable
from 0.5 to 5.0 divisions.
¾
Full Duplex RS-232 Communications standard
¾ Digital I/O Standard – Access to four TTL inputs and four TTL outputs on board.
¾ Microprocessor Watchdog System monitors operation to prevent scale failure or
lock-up under severe fault conditions.
¾ Approvals – NTEP Class III certification to 10,000 divisions.