FI-521 Force Indicator

View Specifications

The FI-521 is a bi-directional load cell instrument accepting both positive and negative load cell signals, internally performing the analog to digital conversion at 80 times per second. The FI-521 Indicator features an IP65 stainless steel enclosure for reliable performance in wet or dusty environments. Included swivel mounting bracket allows for wall or bench mounting. Watertight connections include the AC power cable, 7-pin load cell quick disconnect cable connector and three additional cable ports. The instrument’s 6 key front panel enables all setup, configuration and calibration procedures. FI-521’s calibration procedures include a multi-point calibration feature for correcting the performance of non-linear load cells. The indicator has memory to store calibration information for up to three load cells.

The FI-521 can store peak and first peak values at 80 Hz. Operators can track stored data using date/time information and a 6-digit ID number. The stored data can then be printed or sent to a PC or other device using programmable print and data output formats. The FI-521’s four logic level inputs and the bi-directional serial port can receive control commands from external devices. The instrument can control external devices via any of the two standard cutoff outputs. Also, has on board an analog output that is fully calibrated for 0 to 2.5 VDC.

FI-521_LED FI-521_LED_Left



7 digits, 7-segment, 0.7″ (17 mm) ultra-bright LEDs with 14 annunciators

Display update rate 10Hz

Max display range -999,999 to 999,999


6 push buttons: select, cell, print, unit, zero, on/off

Real Clock

Built-in nonvolatile real time and date


Serial Port 1: Full-duplex RS-232

Serial Port 2: Full-duplex RS-232 or half-duplex RS485

Baud Rate: Selectable 1200-2400-4800-9600-19200/38400-57600 bps

Data Output Format: 8N1, 7O1, 7E1

Serial Output: Select up to 14 additional data parameters

RS-485: 0-5VDC

Analog Output: 0 to 2.5VDC (≤ 2.5mA)

Remote Input: Select,cell, print, unit, zero, off

Setpoint 1 & 2: 5 to 24VDC (.5A max) external, 5 to 8VDC (≤ .1A) internal

Why the FI-521 Force Indicator?

3 Cell Memory

80Hz Peak Capture Rate


2RS-232 Serial Ports


5 Point Curve Linearization

Built-in Real Time and Date Clock

Choose your unit of measure: lb, kg, N

2 Set Point Outputs

7-pin load cell quick disconnect (equipped)

4 remote keypad inputs

Analog output


Product Resources

These resources help you get the most out of your Dillon product. Can’t find what you’re looking for? Contact Us