Rice Lake 120 Digital Weight Indicator - Manual (Page 40)

36 120 Installation Manual
7.8 Specifications
Power
Line Voltages 115 or 230 VAC
Frequency 50 or 60 Hz
Power Consumption 15 mA @ 115 VAC (2 W)
8 mA @ 230 VAC (2 W)
Main Circuit
Input Voltage 8.0–12.0 VDC
Maximum Current 250 mA
Analog Specifications
Full Scale Input Signal Up to 22.5 mV
Excitation Voltage
5 ± 0.3 VDC,
4 x 350¾ or 8 x 700
 load cells
Sense Amplifier Differential amplifier with
4- and 6-wire sensing
Analog Signal
Sensitivity 0.15 mV/graduation minimum,
1.0 mV/grad recommended
Input Impedance 200 M¾, typical
Noise (ref to input) 0.3
V p-p with digital filters at 4-4-4
Internal Resolution 1 677 000 counts
Display Resolution 999 999 dd
Measurement Rate Up to 30 measurements/sec
Input Sensitivity 0.6 nV per internal count
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
Common Mode
Voltage +1.5 to +3.5 V, referred to zero voltage
Common Mode
Rejection 130 dB minimum @ 50 or 60 Hz
Normal Mode
Rejection 90 dB minimum @ 50 or 60 Hz
IRFI Protection Signal, excitation, and sense lines
protected by capacitor bypass
Digital Specifications
Microcomputer Intel MCS-52 with 16K EEPROM @
18.432 MHz
Digital Filters 3 filters, software selectable
Environmental
Operating Temperature –10 to +40°C (legal);
–10 to +50°C (industrial)
Storage Temperature –25 to +70°C
Humidity 0–95% relative humidity
Altitude 2000 m (6500 ft) maximum
Serial Communications
EDP Port Full duplex RS-232, 1200–38400 bps
Printer Port Output-only RS-232 or active 20 mA
current loop, 1200–9600 bps
Both Ports 7 or 8 data bits; even, odd, space, or no
parity
Operator Interface
Display 6-digit LED display. 7-segment, 0.8 in
(20 mm) digits
LED annunciators Gross, net, center of zero, standstill,
lb/primary units, kg/secondary units,
oz, g
Keyboard 5-key flat membrane panel
Enclosure
Enclosure Dimensions
%
%
A=7.32” (1863 mm)
B = 6.06” (154 mm)
C = 3.74” (95 mm)
D = 1.65” (42 mm)
E = 4.76” (121 mm)
Weight
0.9 lb (0.4 Kg)
Rating/Material ABS plastic
Certifications and Approvals
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NTEP CoC Number03-05999-010
Accuracy ClassIII/IIIL
n
max
: 6 000
Measurement Canada
Approval AM-5517
Accuracy Class III/IIIL
n
max
: 6 000
OIM
Approval TC6736
n
max
: 5 000
Power Adapter