OPII - How Do I Connect 88 Temp Sensors?

[yeti]

1. I have an HAI 20A00-2 OPII all fired up and running. Cocoon has been amazing in helping me do this, both searching/reading the forums and getting great responses to my n00b questions. So far so good.
    
2. I want to add a *LOT* of HAI 31A00-7 temperature sensors to the panel. 88 to be exact. Long story why.
    
3. The OmniPro comparison chart PDF on the HAI website says that I can have up to 176 temperature connected to an OPII.
    
4. According to the HAI 31A00-7 temp sensor instructions both in the box and found online, I cannot connect temp the sensors to a HAI 17A00 Expansion Enclosure.
    
5. The only other expansion module for the OPII I see besides the HAI 17A00 Expansion Enclosure is the HAI 10A06-1 16 Zone Hardwire Expander.
    
6. According to the documentation for the HAI 10A06-1 16 zone expander, I can connect two of them total to the OPII.
    
7. So if I max out the 16 onboard zones on the OPII, and add two HAI 10A06-1 expanders with 16 zones each, that gives me a grand total of 48 zones that I can connect the HAI 31A00-7 temperature sensors to.
    

What am I missing? TIA
 

 

[picta]

Maximum number of 31A00-7 on OmniPro is 48.
 
http://kb.homeauto.com/default.asp?id=621&SID=&Lang=1

 

[yeti]

Picta,
 
Thanks for the reply. This really pisses me off, not at you certainly, but according to the technical comparison chart from HAI about the Omni family, as you can see on the 8th line down it says you can run 176 temperature sensors.
 
(Go to almost the very bottom of the page and you can click for the PDF): http://www.homeauto.com/products/haisystems/omnipro2/omnipro2_tech.asp
 
Any other suggestions?
 
:angry2:
-y

 

[picta]

You can ask HAI for clarification on what they meant with this comparison chart, but I could think of one way that will make the statement technically correct, but not very useful in your situation, like connecting 64 thermostats with 1-2 remote sensors on each. If you really want so many HAI temp sensors, you could consider either having 2 HAI controllers with some software in between for coordinating, or use the relays and periodically switch a zone between 2 sensors. I am not sure how the relay will affect the sensors signal, but you can calibrate it empirically.
 
Also, if your application permits, consider using 14A00 sensors that can be connected to any zone.

 

[BraveSirRobbin]

OK, I got to ask...what are you doing with 88 temp sensors (and more specifically, why the HAI as the recording device)?

 

[yeti]

OK, I got to ask...what are you doing with 88 temp sensors (and more specifically, why the HAI as the recording device)?

 
Maintaining temperature in a climate-controlled storage facility with some pretty nice stuff in each space. I need to be able to keep track of temps in each space and do some good automation from there.
 

 

[ano]

Hmmm where does it say the expansion enclosures doesn't support temp sensors?  On page 10 of the expansion enclosure document it says it does.
 
http://www.asihome.com/ASIshop/manuals/17A00-1_Install.pdf?osCsid=e3cc193c9472d5c5f8d51d1f1083b87b
 
It may just not support the EXTENDED temp sensors, but does support regular temp sensors. If you are just measuring indoor temps and not extreme outdoor temps, it should work fine.  The website is correct, it supports 176 temp sensors.
 
You need a 31A00-1 temp sensor, or 88 of them.  You can use the extended ones on the 48 zones in the panel, so 40 will need to be regular temp sensors. They work from 0 to 120 degress. Do you really need to measure to -40 degreess?

 

[HAI_fjh]

Let me try to clarify. You can put a 31A00-1 Indoor/Outdoor Temperature Sensor (0-120 F) on the main board, a hard wire expander board, or expansion enclosure. The problem is with the 31A00-7 Extended Range Temperature Sensor (-40-120 F). These can also be used on any of the zones, but there is a limitation when connected to an expansion enclosure. These temperature sensors convert temperature to frequency. The higher the temp the higher frequency. The extended range sensors generate higher frequencies and when connected to an expansion enclosure, and the temperature gets above 100 or so the readings are unreliable. So here are your limitations.

31A00-1 can reliably measure 0-120 F on any zone.
31A00-7 can reliably measure -40-120 F on the main board zones and hard wire expander boards, but only -40~100 F on an expansion enclosure.

Depending on your temperature range requirements you can choose which works best for you.

I hope this helps.