1010 East Main Street, League City, TX 77573
www.stiweb.com / www.stiwebstore.com
Toll Free 888.777.7213
Fax 281.334.4255
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September 2010 Newsletter
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Vibration Monitoring & Machine Protection Systems 1010 East Main Street, League City, TX 77573 www.stiweb.com / www.stiwebstore.com |
Tel
281.334.0766 Toll Free 888.777.7213 Fax 281.334.4255 |
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| Sensors - Vibration Monitors - Vibration Transmitters - Protection Systems - Junction Boxes - BNC Switch Boxes - Sensor Cables - Mounting Hardware - Rotor Kits - Balancing Kits |
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| Copyright © 2014 STI Vibration Monitoring Inc. All Rights Reserved. |
We have completed our relocation (2.8 miles down the road) to our new office facilities this summer. Our new address is 1010 East Main Street, League City, TX 77573. As we are changing all Marketing and Technical Data to reflect the new address we have also taken this opportunity to change our name from "Sales Technology Inc." to "STI Vibration Monitoring Inc." As most of you know us as "STI" this will make that name official and make us easier to find in directories and on the Internet. All emails, web addresses and phone numbers remain the same. 
To allow the customer a connection to the buffered Accelerometer signals, 
Occasionally a customer will ask us how to interface one of our Transmitters with a 4-20 mA output to a DC Input Field IO Card. What is important to understand is that even a 4-20 mA Input Card uses a shunt resistor to convert the 4-20 mA to a voltage usable by the card for measurement. If you have a DC Voltage IO Card simply install a shunt resistor across the input that will change the 4-20 mA to DC Voltage. A 250 Ohm 2% Resistor produces 1 to 5 VDC. Many of the IO Cards we have been interfacing with in the last few years use a 100 Ohm resistor which when installed across the 4-20 mA provides a 0.4 to 2.0 VDC signal (Ohms x Current = VDC). Remember to use your PLC's "Offset" setting to have 0.0 in/sec start at 4mA or the equivalent calculated voltage.
