Rice Lake 720i Digital Weight Controllers

The 720i Digital Weighing Indicators set a new standard for control over more processes, more equipment, and more information than ever before. The 720i allows you to automate entire systems by dictating batch formulation, inventory management, or traceability. Capture and store weight data. Link more peripheral equipment. And do it all with incredible ease. Advanced programmability using ProAction (PCEE) and enhanced data base storage make the 720i ideal for a wide variety of weighing applications. Available in both universal and panel-mount configurations.

Download the 720 IQ Plus Brochure.

IQ Plus 720i Digital Weight Controllers

Notable Features

  • LCD display size: panel mount (3.8" x 1.2") universal (5.3" x 1.5")
  • Four soft keys
  • Truck in/out, 1,000-ID memory
  • Process control engine - define conditions and actions
  • Data storage onboard, user-defined
  • (8) Digital I/O (expandable)
  • One option slot for pluggable options
  • (20) Auxiliary print formats
  • Time & date
  • Audit trail tracking and alibi storage
  • Peak hold
  • Rate of change
  • Multi-range/interval
  • Local/remote


  • Two full duplex serial ports
  • One PC style (PS/2) keyboard port
  • Header for fiber optic, Ethernet or USB

720i Digtial Weight Controllers

Specifications Description
Power Line voltages: 115 or 230 VAC,
Frequency: 50 or 60 Hz
Power consumption: 25 watts maximum
Excitation Voltage 10 VDC, 16 x 350 Ω or 32 x 700 Ω load cells
Analog Signal Input Range -10 mV to +45 mV
Analog Signal Sensitivity 0.3 μV/graduation minimum @ 7.5 Hz
1.0 μV/graduation typical @ 120 Hz
4.0 μV/graduation typical @ 960 Hz
A/D Sample Rate 7.5 to 960 Hz, software selectable
Resolution Internal resolution: 8 million counts/8,000,000
23 bit
Weight display resolution: 9,999,999
System Linearity ± 0.01% full scale
Digital I/O Eight channels on CPU board; optional
24-channel I/O
Circuit Protection RFI, EMI, ESD protection
Serial Ouput Two ports on CPU board support up to 115,200
bps; optional dual-channel serial expansion
boards available
Port 2: Full duplex RS-232 with handshaking
Port 4: Full duplex RS-232, simplex 20 mA output
PS-2 Keyboard port hard wired (Scan Code 1)
Optional Communication Ethernet TCP/IP
RS-485-4 wire
Fiber optic
Rating/Material NEMA 4X/IP66, stainless steel
Display Viewable area:
Panel mount 3.8 in x 1.2 in (96 mm x 30 mm)
Universal 5.3 in x 1.5 in (133 mm x 39 mm)
240 x 64 pixel, Transflective VGA Liquid Crystal
Display (LCD) module with adjustable contrast
Keyboard 10-key (panel mount) membrane panel,
22- key (universal mount) membrane
panel tactile feel,
720i will support an external keyboard
Operating Temperature Legal: 14°F to 104°F (-10°C to +40˚C)
Industrial: 14°F to 122°F (-10°C to +50˚C)
Dimensions (W x H x D) Universal: 10.5 in x 7.5 in x 3.4 in
Panel Mount Display: 7.6 in x 3.9 in x 1.5 in
CPU: 6 in x 11 in x 2.2 in
Weight Universal enclosure: 9.5 lb (4.3 kg)
Panel Mount enclosure: 8.5 lb (3.9 kg)
Approvals NTEP - certified at 10,000 divisions, Class III/IIL
CC# 08-022
Measurement Canada-10,000
divisions, Class III/IIIHD (Pending)
OIML-6,000/10,000 divisions (Pending)
CE marked
UL /CUL listed (universal)
UL recognized (panel mount)
ROHS compliant
Warranty Two year limited warranty

Contact us today: Toll Free: 1.800.268.3269 or by Email:

The Ownership and Management - Interweigh Systems Inc. 51 Bentley Street, Markham, Ontario, Canada, L3R 3L1
Phone: (416) 491-7001 ~ Toll Free: (800) 268-3269 ~ Fax: (905) 940-1711

Or contact us at one of our five locations: Markham, Mississauga, Woodstock, Montreal and Calgary