Model 8555
Strain Gage to Frequency
Model 8555
analog to frequency converter offers a cost
effective solution for a single or multiple channel PLC I/O
system. It is designed to operate into the PLC high speed
counter inputs. The input range of 0 to 50mV makes the 8555
compatible with most strain gage based load cell or pressure
transducer outputs. The built-in 10V excitation supply is
capable of driving one 350 ohm bridge. The 8555 output for all
modules is linear to 0.01% with a very high accuracy of better
than 0.1%. The output is an isolated floating optocoupler
transistor which provides DC isolation from the input and DC
power. Connections are made easily accessible with screw
clamp terminal blocks.
FULL BRIDGE CONNECTION
Model 8555
Strain Gage to Frequency
SINGLE ENDED
Model 8555
mV Input
Model
Input
Resistance
Current
Common Mode
Output
Resolution
Bridge Excitation
Pow er Requirements
Environment
Operating
Storage
Siz e
Weight
Agency Approvals
8555
0 to 50 mV Differential or Single Ended Signal
1000 megohm
10 nA
0 to +5 Volts
0 to 5 kHz
Floating Optocoupler Transistor
7 mA Pulse - 50 µSec Width
10 microvolts, 12 Bits
10 Volts for One 350 Ohm Bridge
24 VDC @ 45 mA
0°C to +55°C
-40°C to +80°C
1.65"H x 1.06"W x 3.78"L (42 x 27 x 96 mm)
3 oz. (85 grams)
UL 508, C22.2 No 14-M91, UL 1604, C22.2 No 213-M1987
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
1
3/2001
ETC [ ETC ]
