APPENDIX A: SPECIFICATIONS
ANALOG SPECIFICATIONS
Full Scale Input Signal
30mV, including dead load
Minimum Sensitivity - Non H-44
0.4
µ
V / grad
Minimum Sensitivity - H-44
1.0
µ
V / grad
Input Impedance
30M
Ω
, 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 350
Ω
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/350
Ω
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