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E-HELP: Filtering Out AC Noise

E-HELP: Filtering Out AC Noise
Q: Do you have or do you know of a product that will filter out AC noise on an unshielded pair of wires carrying a 4-20mA signal over a distance of approximately 400 feet?
Published: April 14, 2015

Use the SSX to Pass Critical HART Information

Use the SSX to Pass Critical HART Information
A plant upgraded to new Smart HART® field transmitters but was still using their original field-mounted isolators. This meant that engineers in the control room were unable to access the HART transmitters – mitigating the benefits of performing the upgrade.
Published: April 10, 2015

E-HELP: Loop Power for the SPA in the Field

E-HELP: Loop Power for the SPA in the Field

Q: I am installing 24 SPA RTD transducers (Model: SPA/RTD/2PRG/U/-AO [DIN]) and I have a question about how the 4-20mA is powered. They are currently wired as loop-powered and I would like to confirm that this model supports loop-powered field devices.

Published: February 23, 2015

E-HELP: Replacing the DCA with the SPA2

E-HELP: Replacing the DCA with the SPA2
Q: We have been using Moore Industries’ DCA Direct Current Alarms. Is there a like-for-like digital microprocessor-based replacement available with the same mounting dimensions?
Published: February 23, 2015

E-HELP: Choosing the Right Input Option for the FDY

E-HELP: Choosing the Right Input Option for the FDY
Q: I need to order an FDY transmitter for monitoring up to 13600 Hz from a magnetic pickup on a gas turbine for speed indication. Do you recommend the PRG or 10-250V input option?
Published: February 23, 2015
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