APPENDIX A: SPECIFICATIONS
ANALOG SPECIFICATIONS
Full Scale Input Signal 30mV, including dead load
Minimum Sensitivity - Non H-44
0.4 µV / grad
Minimum Sensitivity - H-44
1.0 µV / grad
Input Impedance
30MΩ, typical
Internal Resolution – Neptune 4500
Approximately 260,000 counts
Display Resolution 50,000 display division max
Measurement Rate 10 Meas/sec, nominal
System Linearity Within 0.02% of FS
Calibration Method Software Calibration, with long term storage in EEPROM
Excitation Voltage – Neptune 4500
+10 VDC, 4 x 350Ω load cells
SERIAL COMMUNICATIONS
Serial Port Full Duplex, 1200, 2400, 4800, 9600 Baud
8 data bits, no parity, 1 stop bit
7 data bits, odd parity, 1 stop bit
7 data bits, even parity, 1 stop bit
7 data bits, no parity, 2 stop bits
OPERATOR INTERFACE
Display – LED Indicators 0.56" (14 mm) 7-segment, LED, 6 Digit
Additional Symbols Stable, Zero, lb, kg, lb/oz, oz, Zero, PCS
Keyboard 2-key water proof buttons
POWER
DC Power Consumption – Neptune 4500
80mA + 30mA/350Ω Load Cell
ENVIRONMENTAL
Operating Temperature
–10° to +40° C
Storage Temperature
-25° to +70° C
MECHANICAL
Overall Dimensions (L x W x H) –
Neptune 4500
8.75" x 3.0" x 4.6" (215mm x 75mm x 117mm)
Neptune 4500 Page A-1
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