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Reference Manual Rev 3.23
Software Versions 3.xx
Page 6
2. Specifications
Performance
Resolution
Up to 30,000 divisions, minimum of 0.25
µ
V/division,
(K303 up to 60,000 divisions)
Zero Cancellation
2.0mV/V
Span Adjustment
0.1mV/V to 3.0mV/V full scale
Stability/Drift
Zero: < 0.1
µ
V/
°
C (+ 8ppm of deadload max)
Span < 8 ppm/
°
C, Linearity < 20ppm, Noise < 0.2
µ
Vp-p
Excitation
5 volts for up to 4 x 350 or 8 x 700 ohm load cells (4-wire or 6-
wire plus shield)
Maximum total load cell resistance: 1,000 ohms
A/D Type
24bit Sigma Delta with 8,388,608 internal counts
A/D Conversion
Rate
20Hz with FIR filtering > 80dB
Operating
Environment
Temperature: –10 to +50
°
C ambient
Humidity: <90% non-condensing
Storage: –20 to +50
°
C ambient
IP65 when panel mounted
Case Materials
ABS, Silicon Rubber, Nylon, Acrylic (no halogen used)
Packing Weights
Basic R320 Indicator: 0.34kg
Digital
Display
LED Backlit LCD with six 20mm high digits with units and
annunciators
Setup and
Calibration
Full digital with visual prompting in plain messages
Digital Filter
Sliding window average from 0.1 to 4.0 seconds
Zero Range
Adjustable from 2% to 100% of full capacity
Power Input
Standard Power
Input
7 to 24VDC, 4.8, 7.2, 9.6,12 and 24V batteries (2.5 VA max) -
ON/OFF key with memory feature
Variants
AC
AC Plug pack: 110/240VAC 50/60Hz in 24VDC 1.25A out
Battery
4 x AA batteries (Alkaline or rechargeable NiMH, NiCad, etc.)
12V battery pack (2.5Ah rechargeable NiMH)
Features
opto-LINK Data
Coupling
Infra-red Connector for optional opto-LINK PC cable (to RS-232
or USB PC port)
Correction
Ten point linearity correction (K302 Only)
Outputs
RS-232 automatic transmit, network or printer outputs.
Transmission rate: 2400, 4800 or 9600 baud
Assignable Function
Key
Unit switching, counting, manual hold, peak hold, live weight,
totalising
Drive Outputs
2 isolated transistor drive outputs (300mA total at 50VDC)
Battery Backed
Clock Calendar
Battery life 10 years minimum