4-20mA Signal To What To Record Flow?

If I'm reading your post correctly, normally you would connect it up to a chart recorder.

We similarly do this to HTST's (High Temperature Short Time) Pasteurizers.

phoenix911

Your flow-meter will have to be ranged to output the 4-20mA signal as equivilant to a given range, such as 0 to 100 gpm. The loop power supply is not always supplied by the transmitter. If your flow-meter has to be plugged into a power source, such as 120vac, then it likely provides a loop power supply.

The 4-20 signal may be received by a digital indicator or chart recorder.

If your flow-meter does not have its own loop power, then you will also have to supply a 24v DC loop power to the instruments.

You need to connect other ends of wires to a process indicator / recorder. if you go through the manual you can easily manage..

visit Endress + Hauser website

Just as HerbVic posted in#2

I like using the Honeywell 4500 series chart recorder. It prints its own chart, can handle 4 inputs of completely different scales and types. The time/rev (chart speed) can be set anywhere from 1 rev/hour to 31 days/rev. Handy for troubleshooting in the short term or long term monitoring to meet mandated requirements. So on the same paper chart, you can record accurate Flow Rate, pH, Temperature and another analog input. It also prints time of day, date, chart speed, and scale for each input, directly on the chart. If you need to meet a mandated limit or risk a fine or jail, you need that data to CYA. Honeywell Tech support is very effective and timely in addressing any problems our customers have had, something I wish some others would learn.

Regulators are very reluctant to trust paperless chart recorders; someone may tamper with the data, in their view. Strip chart recorders are harder to read, fold and file, but will record the data just as well.

Dear Friend,

I dont know practically how to design the motor at this moment. But i do know the best tools available for the testing and measurement and for the maintainance of the motor for lifelong period. I have my firm for the transformer repair and winding in maharashtra.

Rishabh Instruments, a nasik based company, i suppose, is the worlds leading manufacturer of the Analog panel meters and it is also engaged in manufacturing of the digital instruments for easing the daily tasks of people like us.

Now i have herd that they are representing Gossen Metrawatt of Germany and METREL of Slovenia for the marketing and servicing of the same in India.

I have found the websites of all the three companies and i am glad to tell you they are:

www.rishabh.co.in

www.gossenmetrawatt.com

www.metrel.si

I have bought the multimeter from this company and i was amazed with the performance of the same. Rishabh provides a very wonderful after sales service for all its instruments and now i came to know why they claim "German Quality products at Indian prices". Isnt that wonderful. I have ccordinated with a lady there at marketing@rishabh-instruments.com and spoke to her on 02532202160 when i had purchased the meter.

Have a nice time...

DATAQ has some pretty nice equipment for very reasonable prices.

You can get 4 differential inputs, software, and the cable for 99 bucks.

<We want to able to view this flow-rate as a function of time.>

Then what is required is a device that will do this, complete with a 4-20mA input for the signal that the transmitter is sending.

It is possible that a DC power source will be needed as well.

The original equipment manufacturer's manual for the flowmeter instrument ought to contain typical wiring diagrams, and these will need to be interpreted to encompass local circumstances.

All flow rates are a function of time. There are many ways to display or record 4-20mA signals: LED display, Chart recorders, ASICs, a/d converters, PLCs, DCS, etc. What you pick depends on the application. Do you need a filtered signal? What resolution do you need? Sampling rate? Do you need to collect and store the data? Do you have to do any signal conversion or math to get it into a usable unit of measurement? If it is a simple display look into one of the red lion displays.

http://www.redlion.net/Products/DigitalandAnalog/DigitalPanelMeters/Process/CUB5P.html

The nice thing about these is they have an optional RS232 card you can use to send data to a PC or remote display or whatever.

If you are thinking of using a chart recorder, there are plenty of paperless types available from almost all vendors. I have used Yokogawa before.