Rice Lake Intrinsically Safe - Manual (Page 71)

320IS Installation Manual - Appendix B 65
8.9 320IS Specifications
Power
Nominal Voltage Intrinsically safe power supply (7.5 VDC output) or optional 6 VDC battery
Minimum Voltage 5.8 VDC
Maximum Voltage 7.9 VDC
Current Consumption 100 mA average
175 mA maximum (4 x 350
load cells)
Maximum Surface
Temperature
T4
Fusing 2 x 125 mA, fully-encapsulated (RLWS PN 82432)
Analog Specifications
Full Scale Input Signal Up to 22.5 mV
Load Cell Excitation
4.3VDC (350
); 4.6VDC (700)
Load Cell Current 34 mA (4 x 350
or 8 x 700 load cells)
Analog Signal
Input Range -0.5 mV/V to 4.5 mV/V
Analog Signal
Sensitivity 0.3 μV/graduation minimum,
1.5 μV/grad. recommended
Input Impedance 200 M
 typical
Internal Resolution 8,000,000 count
Display Resolution 100 000 dd maximum
Measurement Rate Up to 60 measurements/sec.
System Linearity Within 0.01% of full scale
Zero Stability 150 nV/°C, maximum
Span Stability 3.5 ppm/°C, maximum
Calibration Method Software, constants stored in EEPROM
RFI Protection Signal, excitation, and sense lines protected by capacitor bypass
ESD/Transient
Protection 600 watt PPD, Transient
voltage suppressors

IEC 6100-4-2
8kv contact
15kv air discharge
Digital Specifications
Microcomputer Phillips PXAG30K processor @

22.1184 MHz
Digital Filter RATTLETRAP TM digital filtering
Optical Port
Physical Medium 2.2mm plastic fiber @ 640 nm
Max Transmission
Length
246 ft. (75 m)
Operator Interface
Display 6-digit LED display. 16-segment, 0.8 in (20 mm) digits
LED annunciators Gross, net, center of zero, standstill, lb/primary units, kg/secondary units, count, tare
Front Panel 6-key flat membrane panel (including power on/off button)
Environmental
Operating Temperature –10 to +40°C (14 to +104°F)
Storage Temperature –25 to +70°C (-13 to +158°F)
Humidity 0–95% relative humidity
Enclosure
Enclosure Dimensions 9.5 in x 6 in x 2.75 in
24 cm x 15 cm x 7 cm
Weight 2.8 Kg (6.1 lb)