somewhere on this board (I think) within the last couple of months someone put a link to an online 4-20 ma transmitter that they were using to supply a DCS that also had BNC connections for walk around hookup. Whoever supplied the link commented that they had been putting several of them in.
I had the link on my laptop, but unfortunately my laptop was stolen last month out in Sunny Oakland, CA.
I have searched the forum, but can't come up with the thread.

If you recognize the description, would you please post the link again. I am in need.

Dave

Dave,
I am not sure about the link to which you refer, but I do know that you will find such a product on the Adash website, www.adash.cz, it is called the 3900II.

Best Regards,
Tom Murphy

Dave,

Is this it?

http://maintenanceforums.com/eve/forums/a/tpc/f/3751089...891039472#3891039472

Tom and Danny,

No, neither was what I may have "dreamed"

Thanks,

D

Dave here is a link to the it series from wilcoxin could this be what you are looking for
http://www.wilcoxon.com/vi_index.cfm?CatS_ID=31

CTC has a new line of "dual-output" sensors, which may be seen here: http://ctconline.com/__lp400_dual_output_sensors__.aspx

These are available in a number of configurations. The dynamic output may be either acceleration (probably the right answer for use with most data collectors) or velocity, while the 4 - 20 mA output can be proportional to acceleration or velocity as well. In addition, the full scale range for the 4 - 20 mA signal must be specified. The range must be specified because of the limited dynamic range of the 4 - 20 mA signal.

A typical application might use a sensor with acceleration as the dynamic output, and velocity as the 4 - 20 mA process output. Process output set to RMS, with a maximum level of 1.0 IPS RMS, with a bandwidth of 3 Hz - 2500 Hz. This would be part number LP402-1-R-2-1A.

The complexity of integral electronics and the need for customization add significantly to the cost. These sensors are $350 for the version with a integral connector. They are also available with an integral cable.

Jon
Spintelligent Labs

Lee and John,

Those weren't it either. However, thanks for the replys.

I just hope it was this board

Dave

Dave,

SKF has a transmitter with a BNC connector on the side for AC output.

SKF Loop-powered Vibration Transmitter
CMSS 420VT

If you are going to be at the machine with a data collector, then why not use its accelerometer? The other options are to plug in at transmitter module or a terminal box, if dual output sensor is used.

Walt

CTC has (2) different style transmitters available that output a 4-20mA signal for the DCS and a BNC jack that offers unfiltered/non-buffered full range dynamic for use with walk around data collectors.
Here is there site;
http://www.ctconline.com/__sc200_and_vx_series_signal_c...nd_transmitters.aspx

If you need more info about these, please give me a call at 800-999-5290, ext 831
Gary Kaiser
Application Engineer

Walt,

I guess I should have posed my question differently looking back in hindsight. I believe the box I saw allowed for you to use your own transducer, and then output a "proportional" 4-20 ma signal that could be ran to the DCS for overall trending.
I am looking for something that can be utilized for a chem plant.
Their thought process right now kinda goes along with the thread on Legacy companies. I'm trying to develop something that we utilize both worlds for right now.

Thanks for all your replys.

Dave

I think I know what it is. The IMI 689B01 4-20mA proportional to 0-1ips with a BNC output direct link to a 100mv/g sensor. A 500mv/g sensor will give you 0-.2ips proportional to 4-20mA I use them here. But you know Dave, that CTC SC-101 is exactly the same thing with added benefit of specifying a band filter. It may cost less as well. I've had good luck with their products also.

http://www.imi-sensors.com/series.asp?series=689B01

This message has been edited. Last edited by: vibbase,

The IMI 682A03 is the din-rail version of the transmitter above. If you already have a distributed system, it works pretty well as it has a few more bells and whistles, like an extra "raw" output, plugin filters, etc. We used these to implement a simple monitoring system on some baghouse fans using off-the-shelf accels and cables (from CTC of course... that lifetime guarantee thing is very smart).

IMI 682 transmitters

Dave,

We have mentioned dual output transmitters and standard accel plus transmitter modules, so what the heck are you thinking about? Kind of like playing Charades game!

Walt

Walt,

I'm getting old. Too old to play charades. The pictures of the ones I see on this thread do not mirror what my old dried up brain has in it. However, The CTC or IMI ones will work for what I want to do. I have to use common accels, and may have to fool with outputs because we have some cutters that will peg a 50mv transducer with high freq g's in the range of 60. I currently use 25 mv for them. So if I can use standard transducers, output a 4-20 and have a place to hook my walk around box to I'll be happy. A reasonable price, small enough to fit 4 to 8 channels in a nema box along with some barriers, would be exceptionaly nice.

I'm done.
Dave

We have over 10,000 channels installed world-wide with our 4-20mA vibration transmitters interfaced to DCS/PLC systems for trending and control. We provide them as modular single channel systems and package them in single, dual, four, 8, or any number required for the application. Our systems are available from STI, SKF, CSI, Dresser Controls, Dynalco, GE Woodward, Reliability Direct and others.

http://www.stiweb.com/proddata/cmcp500sample.htm

http://www.reliabilitydirectstore.com/Vibration-Transmitters-s/57.htm

Happy to discuss your application directly.

Dave,

I'll be callin in a month or two.
And I added this thread to my favorites. Won't ask again

D

SKF has a brand new one out called DMx. If you have MA it will really work for you. We have put in alot of Metrix transmitters with 4-20 output plus a BNC for analysis as a low cost replacement for the old Bently racks. You can check them out at

http://www.metrix1.com/

Good luck on hacking through the rainforest

Hope this helps