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Network Type Weighing Indicator

Product outline

F850 is a mid-class loadcell indicator that can be used for wide-ranging applications from weighing scales requiring a high-level sequence such as hopper scales and packing scales to simple applications such as general platform scales.

F850 is a Bessel type low-pass filter that has high-speed A / S conversion and powerful digital processing capabilities of 100 times/sec and a strong attenuation characteristics. SI/FII interface allows easy construction of a network system to communicate with peripherals. F850 is a mid-class loadcell indicator that can be used for wide-ranging applications from weighing scales requiring a high-level sequence such as hopper scales and packing scales to simple applications such as general platform scales. F850X1 is a series controller equipped with a checker function.


Analog section
Excitation voltage 10V DC ±5%, Output current; within 120mA (Up to 4 units at 350Ω are parallel-connectable)
Zero adjustment range 0 to approx. 2mV/V (digital adjustment)
Gain adjustment range 0.3 to 2.0mV/V (digital adjustment)
Min. input sensitivity 0.3μV/count
Accuracy Non-linearity: within 0.01%/FS (Typ: 0.005%/FS at room temperature)
Zero drift: within 0.1μV/°C RTI (Typ: 0.08μV/°C)
Gain drift: within 15 ppm/°C (Typ: 5 ppm/°C)
Noise: within 0.1μVp-p RTI (0.1 to 10 Hz)
Analog filter Bessel low-pass filter (-12dB/oct.), Selectable from 2, 4, 6, 8 Hz
A/D converter Speed: 100 times/sec.
Resolution: 16bit (binary)
Min. display resolution 1/10000
Secondary calibration Calibration can be carried out without an actual load by connecting a resistor to one of the bridges of a loadcell.
Setting section
Setting method ・ Keyboard operation (keyboard with a key click buzzer)
・ External setting is available by installing RS-232C option
Setting value storage ・ Initial set values: NOV RAM (Non-volatile RAM)
・ Other set values: C-MOS RAM with backup of a lithium battery (Effective for more than 7 years depending on usage conditions and storage environment)
Setting value protection Setting operation can be locked to prevent unauthorized modifications of default values and calibration by malfunction (LOCK)
I/O section
External output signal Transistor’s open collector output (Emitter = COM terminal); Output is LO when transistor is ON.
External input signal ON when shorted to COM terminal by contact (relay, switch) or non-contact (transistor, open collector)
Interface SIF: 2-wire type serial interface (standard); Interface to link with Unipulse printer or external display
SI2: 2-wire type bi-directional serial interface (standard): Interface to link with peripherals such as printers and display units.
232: RS-232C communication interface (optional): Write (change) / read weight data, various statuses and setting values via commands from host computer
Display section
Display unit Numerical display with a character height of 17 mm by fluorescent display tube (8-digits)
Weight value display 5 digits, Sign: Minus sign displayed on most significant digit
Scale capacity 5-digit numerical values (up to 99999)
Character display 5 x 7 dot matrix display, 24 digits x 2 lines ANK
Unit display 5 x 7 dot matrix display, 2-character selectable from t, kg, g, N, lb, none
Display frequency Selectable from 25, 13, 6, 3 times/sec. (display only, system speed 100 times/sec.)
Min. scale division 1 to 100 selectable
Decimal point Selectable from 0. 0.0, 0.00, 0.000
Center zero True zero point (0±1/4 scale) or the center of each value is displayed.
Message Menus and guidance for settings are displayed. Operation status of the indicator is displayed when setting is not carried out.
General performance
Power supply voltage 85 to 110V, 102 to 132V, 170 to 220V, 187 to 242V AC (Please specify when ordering), 50/60Hz
Power consumption Approx. 15VA
Operating conditions Temperature: Working temperature range -10°C to +40°C; Storage temperature range -40 to +80°C
Humidity: 85%RH or less (non-condensing)
External dimensions 192 (W) x 96 (H) x 154 (D) mm (protruding parts not included), DIN standard size
Panel cutout dimensions 186 (W) x 92 (H) mm (+0.5/-0)
*Installation panel thickness: 1.6 mm or more
Weight Approx. 2.2kg
Power supply cable (2m) 1
Spare fuse (1A) 1
Mini-driver for terminal block connection 1
Loadcell connector 1
Control signal connector 1
Operation manual 1


Model Interface
232 RS-232C communication interface

Optional accessories

Model Description
CAAC2P-P2 AC input cord 2m
CAAC3P-CEE7/7-P1.5 AC input cord (Voltage resistance: 250V) 1.5m
CN3P-2P 3P-2P conversion plug for AC input cord
CA4131 (6-core) cable with JR connector at one end (cable end is separated) 3m
CA4230 JR-PRC conversion relay (6-core) cable 0.3m
CA4311 JR-PRC conversion relay (6-core) 4-wire type/6-wire type (for 520A) 1m
CN22 57 series 50p connector for external I/O
CN35 D-Sub 25p connector for RS-232C
LB01-NH 57 series 24p connector for external input/output
CN34 Lithium battery (with NH connector)


Product catalogue(PDF)
F850 Product catalogue Dowmload
Operation manual(PDF)
External dimention
Support tools
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