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There's a whole category of data acquisition instruments known as 'data loggers' that are self-contained units with analog inputs, some storage and some means of exporting data, sometimes as a .csv file. Google can find them for you.

Is there an existing "data acquisition setup" that you're not inclined to use? Why? The owners of the PLCs will ask the same question. The AI's-on-the PLC approach is technically doable, if the PLC 'owners' are willing to let you alter the PLC program(s). If your PC is outside the...

Google could be your friend illustrated slides: https://www.agilent.com/cs/library/eseminars/public/GC_Troubleshooting_09072017.pdf lists...

1. The most common issue is loop resistrance. A HART loop requires a minimum of about 250 Ohms in order to develop sufficient signal strength. That resistance is usually supplied by the resistor across the (+) and (-) terminals on the analog input card. Many brands and models of AI cards...

I can't help you. The manual is not clear on which parameter needs to be turned OFF. The references might refer to the Windows PC based tools like Fieldcare or DeviceCare or Field Xpert.

Sometimes good instrumentation shows a process condition that operators don't want to see. How do you know that " there is not fluctuation in syn gas flow"? Noise can be the result of a poor flow profile. Swirls in the flow profile affect the formation of vortices. Vortex meters need long...

Many process instruments that use a temperature or pressure sensor for compensation have an emergency mode where a static value can be used, instead of the dynamic measurement in order to bypass a failed sensor measurement and still get an output value. Page 156 of the Prowirl F200 manual at...

Let's start at the very beginning: With the signal source disconnected from the isolator/splitter, can your DVM (milliamp mode) measure a valid 4-20mA signal? With the signal source reconnected to the isolator/splitter, but disconnected from the 16 ch AI card, can your DVM (milliamp mode)...

The real debate is between a motion controller and a PLC. DCS is typically not a contender. There should be some opinions expressed by those far more knowledgeable than I in motion control that can offer their opinions. The topics has come before.

If the value at register 49 is a floating value then you'll need to enter 2 for the Length.

Modscan: Check the box to force the use of FC16 when FC06 is not available: Connection > Connect > Connection Details > Protocol Selections To Write values with FC16: Setup > Extended > Preset Regs 16: Preset Multiple Registers: Enter the starting register number (decimal) and the total...

For your information, forum replies are from 'volunteers' who offer their expertise and assistance as they see fit. There is no paid staff to execute any response in any form. This is the nature of all internet fora that are not hosted as a support function for a specific commercial...

Which temperature sensors did you replace? The ones on the cooling system or the sensor(s) detecting the column temperatures that are used for alarm/trip detection? Over time, have dissolved or suspended material in the cooling water coated the surface area,effectively insulating the area that...

If you don't have a text book to reference for your studiess, there's a free, downloadable textbook on electronics and process instrumentation authored by Tony Kuphaldt. It's a great go-to resource. Since it is in pdf format, it has the pdf search function. download the pdf from...

Voltage Outputs For some reason, analyzers and scientific instruments that find their way into the process world are the suspects for voltage output signals. And probably not isolated which will require an isolator module by the time the signal gets to wherever it goes. There are some "low...

1. Cable is called STP, Shield Twisted Pair. Accept no substitute for a low level mV signal. Hopefully there is a ground connection for the shield at the analog input. 2. The issue Joseph_E2 is trying to alert you to is a common mode voltage issue. Your amplifier card almost certainly...

Ethernet-APL has a real chance of supplanting 4-20mA. Ethernet-APL is 2-wire, loop powered Ethernet communications that can be intrinsically safe. The 2-wire (power to run the field device over the same wires as the output signal) part is a big deal for long cable runs encountered in the...

The analog signal, 4-20mA, is used worldwide because - it is simple and rugged - in its 2 wire, loop powered form it gets its power over the same wires as the signal, which reduces the cost of wiring extra wires over long distances. - it has an inherent 'live zero' where zero engineering...

Sometimes Modbus documentation is with the user manual. Sometimes the Modbus documentation is in a separate 'Communications' manual. It depends on the vendor.

See this thread on the same topic: https://control.com/forums/threads/modbus-rtu-slave-address-unknown.34490/#post-190781 Note the reply in post #5, which implies that the slave node (device) ID for the energy meter is configured via Modbus at register address (4)2385. In the absence of the...