Service manual

PT300, Service Manual
Rev B, October, 2000
6
Specifications
Electrical
Display settling
time:
950 milliseconds to typical reading (static).
Accuracy: ±1% of applied load
±1 display division in static mode
±2% of applied load
±1 display division in roll-over mode.
Overcapacity: 105% of nominal capacity.
Safe Overload: 150% of capacity.
Batteries: 6 x 1.2 volt AA nickel cadmium cells.
(Alkaline batteries can be used, but do not attempt to recharge
them).
Battery Life: Approximately 5 years. (1500 charge/discharge cycles).
Battery Duration: Approximately 8 hours of continuous use before the low battery
indicator comes on, and 2 hours after that before the scale
shuts itself off.
Automatic Shutoff: The scale turns itself off when the battery voltage gets down to
approximately 6.3 volts.
Charging Voltage: 11.5 volts - 14.5 volts DC. Protection is provided for accidental
reversal of the charging connections.
Charging Current: Starts at approximately 300 mA and drops down to 50 mA after
8 hours.
Charging Time: 8 hours if the batteries are discharged to the point of turning off
the scale.
Low Batt.: Indicator comes on when the battery voltage gets down to
approximately 7.2 volts.
Fuse: Buss type AGC-1.
Serial interface specifications:
Interface: 1200 baud, 8 data, no parity, 2 stop bits.
Format: Each print line contains
Physical
Overall Dimensions: 3 x 16 x 20 inches / 76 x 406 x 508 mm.
Platform Dimensions: 12 x 12 inches / 305 x 305 mm.
Scale Weight: 37 lb / 16.8 kg.
Display Height: 0.55” / 14mm