Low Cost Strain Gage to PLC Converter
Calex Mfg. Co., Inc. announces the model 8555 DIN mount Strain Gage to Frequency
converter which is a cost effective solution for taking strain gage or load
cell signals and converting them to a pulse for input into the high speed
counter of a PLC. The 8555 accepts a 0 to 50mV differential or single ended
signal and converts it to a 0 to 5kHz pulse compatible will virtually all
PLC manufacturer’s high speed inputs. The 8555 includes a 10 Volt excitation
source making it a complete turn key strain gage/load cell conditioner. The
list price for the 8555 is only $125 and when combined with a Micro PLC provides
a very cost effective control system for a variety of weighing applications.
For input requirements other than 0 to 50mV, Calex has produced a number of
variations all the way down to 0 to 2mV full scale for customer specific applications.
The output of the 8555 is an isolated floating optocoupler transistor which
provides DC isolation from the input and DC power. The output frequency of
0 to 5kHz can also be adjusted by the factory for customer specific applications.
The output is linear to 0.01% with a very high accuracy of better than 0.1%.
The built-in 10 Volt excitation source provides sufficient current to drive
a 350 Ohm bridge. The 8555 is powered by 24VDC with a maximum current draw
of 45mA.
The dimensions of the 8555 are 1.65"H x 1.06"W x 3.78"L. The
unit is recognized to UL 508 and UL 1604. Units are typically available from
stock to three weeks.
Complete Datasheet:
Model 8555