Best hardware for an application

[cpalka]

Dear all

I need to recover a broken furnace from my lab.

The manufacturer does not support it anymore.

I will present the furnace:

- works all time 540 degrees C

- it has a balance incorporated

- it has 2 thermocouples type K

- it has 1 solenoid for door lock

- it has 3 SSR relays for the heat resistors.

I should need:

- now a pc with LB

- a hardware with analog IN (2 for temp, 1 for balance)

- need a signal amplifier for load cell from balance and amplifiers for thermocouples

- a hardware with analog or digital out for lock door, control temp by controlling SSR

 This furnace is for burning a sample in a constant temp of 540C and the time is that between 2 weight we has no weight difference.

The NI6009 should be the right choice?

What are your opinion?

Best

CPalka

[GerdW]

Hi Cpalka,

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@cpalka wrote:

The NI6009 should be the right choice?

---

Not at all.

It doesn't handle thermocouples…

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@cpalka wrote:

I will present the furnace:

- works all time 540 degrees C

I should need:

- now a pc with LB

---

Use a PLC with some suitable input/output modules.

Or use a cRIO to handle your "works all time" condition…

What is a "pc with LB"?

[cpalka]

Hi Knight

The idea at the beginning was to use a PLC with a display window, but it will be another challenge to study and learn....

Idem for cRIO

Pc with labview installed and connected to a bord as NI6009

Best

cpalka

[GerdW]

Hi cpalka,

---

@cpalka wrote:

The idea at the beginning was to use a PLC with a display window, but it will be another challenge to study and learn....

Idem for cRIO

Pc with labview installed and connected to a bord as NI6009

---

A stone-old USB-based cheap hardware like the NI6009 isn't recommended to control your system IMHO.

What are the safety requirements for such a system?

How much can be harmed (humans and laboratory devices) when something in this system breaks?

(How much is it allowed to cost when that cheap solution breaks?)

Again: to provide some (but not all!) safety measures you should use an "always on" PLC or cRIO…

[GRCK5000]

Hi Cpalka,

How are you?

I would suggest you use US-TC-AI (https://www.mccdaq.com/PDFs/specs/USB_TEMP_TC_series_data.pdf)

I have used it before. All you have to do is to download drivers or whatever that needs to be interfaced with LabVIEW then you should be good to go. Below are how its VIs look like. You have a bunch of options as you can see below. 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~John 14: 6~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[cpalka]

Hi knight

You are completely right. Safety first.

I worked in the past with omron PLC, but it was many years ago.

I will see.

Best

cpalka

[cpalka]

Hi GRCK5000

Seems a good solution to use with labview and a PC.

I will think on that or in the way to use a PLC

Best

cpalka