680HE Synergy Series Hostile Environment Digital Weight Indicator

As of: Friday, July 31, 2026

Standard Features

LED display
Battery backed time and date
Full numeric keypad
Multiple communication ports
Eight setpoints, 22 configurable types
Numeric keyed entry for tare and setpoint entry
Formattable tickets
Four onboard configurable digital I/O points, TTL logic
Local/remote

Options

Ethernet bulkhead connector
Analog output: 16-bit resolutions, 0-10 VDC, 0-20 mA, 4-20 mA

Approvals

WARNING: Cancer and Reproductive Harm California Proposition 65

Hostile Environment Scale Indicator

Rice Lake's 680HE hostile environment weight indicator is made to withstand the unique demands of corrosive environments. Ideal for the agriculture industry, fertilizer production and transfer, as well as other applications with a high concentration of corrosive substances such as chlorine, the 680HE uses an FRP enclosure and IP66 rating for the highest level of protection.

The bright 2.5-inch, six-digit display makes it easy to view weight from a distance in any lighting condition. The large display size and local/remote capability give the 680HE the option to be used as a secondary display. Configure display color as red or green for enhanced visibility that best suits the application.

The 680HE supports multiple communication options for connecting to multiple devices such as printers and PCs. The full numeric keypad makes tare entry easy, and four digital I/O points are available for basic weightbased control of interfaced equipment.

680HE Specifications

Power:
Line voltages: 100 to 240 VAC
Frequency: 50/60 Hz

Power Consumption:
12W (AC) with one 350-ohm load cell, 30W max

Excitation Voltage:
10 VDC (± 5 VDC), eight 350-ohm or 16 × 700-ohm load cells

Analog Signal Input Range:
-0.5 mV/V to +7 mV/V

Analog Signal Sensitivity:
1 μV/graduation recommended

A/D Sample Rate:
6.25 to 120 Hz, software selectable

Resolution:
Internal: 8,000,000 counts
Display: 100,000

System Linearity:
Within 0.01% full scale

Digital I/O:
Four configurable I/O-5 V logic

Communication Ports:
Two full-duplex RS-232
RS-485/422 (half/full duplex)
Micro-B USB (device)
Ethernet TCP/IP (10/100)

Annunciators:
Eight LED annunciators

Display:
Six 2.5 in tall, seven-segment digits

Keys/Buttons:
Flat membrane panel, tactile feel
(18 buttons)

Dimensions:
(L × W × H)
12.50 × 6.30 × 10.50 in
(318 × 160 × 267 mm)

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

Rating/Material:
IP66, FRP

Weight:
7.9 lb (3.5 kg)

Warranty:
Two-year limited

EMC Immunity:
10 V/m

Approvals:
NTEP 19-021, Class III/IIIL, 10,000 d
Measurement Canada AM-6121C
CE Marked
UKCA
cULus Listed
IEC

680HE Dimensions

Dimensions
A	12.50 in (318 mm)	C	6.30 in (160 mm)	E	8.00 in (203 mm)
B	10.50 in (267 mm)	D	13.00 in (330 mm)

Part #	Description	List Price
199574	Full Numeric Keypad, 115-230VAC FRP Enclosure with external RJ-45	List Price: $2,300.00
197177	Full Numeric Keypad, 115-230VAC FRP Enclosure	List Price: $2,170.00

Part #	Description	List Price
195084	68x Series/iQube3, Install Kit	List Price: $360.00

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