I/O Specification Equivalents

[dierkens]

I've got a project where we're trying to replace a customers existing Emissions Monitor data logger.  

I'm trying to match the specifications of their current products to the equivalent Unitstream I/O products.  I've looked at the specification sheets for all of the I/O module and I'm not seeing a direct correlations between some of them.  What's the best way to post up the specs of the existing I/O to see if you guys can help me match it.  Here's an example of the Current Input Cards of the existing controller.

I tried to post the specs here in the post itself but I couldn't lay it out nicely; so there attached.  

Any help is really appreciated.

 

Existing Controller IO Card Specifications.pdf

[Ausman]

Hi Dierkens,

As an example, have you actually dug down to something like https://unitronicsplc.com/unistream-series-unistream7/

and opened up the modules list which shows them all?  (My personal belief is that some things on the new site layout are not as easy to find as before.)

cheers,

Aus 

[Joe Tauser]

UniStream does not have isolated differential analog inputs or outputs, and the resolution is not quite as high.  You need to determine if this is important. 

I'm betting the UniStream I/O is a lot lower cost.  Are all the sensors powered from the same supply?  Are they 0-10V, 4/20mA, or something else?

Joe T.

[dierkens]

Yes, I've looked at the specifications for what's posted.

I just want to make sure I'm not missing anything.

[dierkens]

9 hours ago, Joe Tauser said:

UniStream does not have isolated differential analog inputs or outputs, and the resolution is not quite as high.  You need to determine if this is important. 

I'm betting the UniStream I/O is a lot lower cost.  Are all the sensors powered from the same supply?  Are they 0-10V, 4/20mA, or something else?

Joe T.

They're a mix of 0-5v; 0-10v; with the majority of them 4-20mA.

8 of the inputs are from the same source (a DCS); there's 6 separate Voltage Inputs and 17 separate mA inputs.

I've got two (2) choices; either purchase some isolation modules (at a cost of about $75/input) or use another companies I/O products that are isolated.

Are there any other non-Unitronics modules that you'd recommend?

[Ausman]

13 hours ago, dierkens said:

non-Unitronics modules

Lots out there but one is the ADAM-4017+.  Other people will no doubt have their own preferences.

cheers,

Aus