420 Plus Digital Weight Indicator)

  • LED display, 0.8 in (20.3 mm), 6-digit, 7-segment
  • Full numeric keypad
  • NEMA Type 4X/IP66 stainless steel washdown enclosure
  • Power for eight 350 ohms load cells or 16, 700 ohms load cells
  • Configurable analog to digital measurement rate
  • Primary/secondary units configuration: lb, kg, ounces, short tons, metric tons, grams or none
  • 2 independent communication ports: two full duplex, one unidirectional active 20mA current loop
  • Standardized EDP command sets
  • Programmable ticket formats up to three 300-character printouts
  • Full front-panel digital calibration and configuration
  • Universal mounting stand
  • 3-stage digital filtering
  • Consecutive transaction numbering
  • 2 digital inputs, two digital outputs
  • Time and date
  • Count mode
  • 2 setpoints, free running
  • Keyed tare
  • Accumulator
  • Configurable with Revolution® software
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Performance, Plus Durability, Plus a Full Numeric Keypad

From tare entry to counting to setpoint outputs, the 420 Plus is the ideal choice for any industrial weighing application. A full numeric keypad allows tare entry directly from the keypad for weighing the contents of totes, cylinders, and containers, eliminating the need to scroll and toggle tare weight values. A count mode allows keyed piece count and APW (average piece weight). Two front panel accessible, free-running setpoints activate lights or buzzers.

Optional DC capability makes the 420 plus an ideal instrument for onboard weighing. Time and date are easily set from the front panel to display and print on a transaction ticket.

The 420 Plus is encased in a tough, all stainless steel NEMA Type 4X/IP66 enclosure for extra-long life, even in the harshest conditions. The ultra-bright, oversized display reduces operator error and accelerates productivity.

Fully interactive, the 420 Plus features two independent communication ports for complete EDP and print ticket programmability. It easily programs two formats with up to 300 characters, allowing you to create complex custom tickets.

The 420 Plus drives up to eight 350Ω load cells, making it the perfect choice for multi-cell applications. Additionally, it features three-stage RATTLETRAP® digital filtering for eliminating most vibration interference and providing stable, accurate weight data regardless of environment


420 Plus Digital Weight Indicator Specifications


Power – AC:
Line voltages: 115/230 VAC
Frequency: 50 or 60 Hz
Power consumption: 1.5 A at 115 VAC (8 W)
0.75 A at 230 VAC (8 W)

Power – DC:
Line voltages: 9-36 VDC DC input
Power consumption: 1.5 A Max

Excitation Voltage:
+5 VDC 8 x 350 Ω or 16 x 700 Ω load cells

Analog Signal Input Range:
-0.5 mV/V – 4.5 mV/V

Analog Signal Sensitivity:
0.3 µV/graduation minimum,
1.5 µV/grad recommended

Internal resolution: 8 million internal graduations
Display resolution: 100,000 displayed graduations

Measurement Rate:
60, 30, 15, 7 1/2, per second

System Linearity:
Within 0.01% of full scale

Digital Inputs:
2 inputs with 8 functions
2 outputs, 250 mA max sink

Circuit Protection:
RFI, EMI, ESD protection

Serial Output:
EDP port: Full duplex RS-232
Printer port: Full duplex RS-232 or simplex active 20 mA current loop
Both ports: 38400, 19200, 9600, 4800, 2400, 1200, 600, 300 bps; 7 or 8 data bits; even, odd, or no parity

0.8 in (20 mm), 6-digit Super Red Light Emitting Diode (LED) display, 7-segment, digits

Status Annunciators:
Designators for: center of zero, stand still, gross, net, lb, kg, count, tare

21-key flat membrane panel

Operating Temperature:
Legal: 14°F to 104°F (-10°C to 40°C)
Industrial: 14°F to 122°F (-10°C to 50°C)

6.1 lb (2.8 kg)

Enclosure: NEMA Type 4X/IP66, heavy gauge stainless steel

Two-year limited warranty
NTEP CC 04-076, Class III/IIIL 10,000d
Measurement Canada AM-5554, Class III/IIIHD 10,000d
OIML TC7004, 10,000d,
UL & CUL listed
CE marked