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View Full Version : PID vs Ranco



Bierkoenig
04-28-2011, 10:03 PM
Anybody have opinions regarding Rancos vs. PIDs for solenoid control? By the time you add the cost of SSRs or relays for the PIDs the price is about the same. PID features may be overkill, but many can be set to take a thermocouple or RTD on the same unit.

gitchegumee
04-28-2011, 11:39 PM
PID as a brand name? PIDs stand for proportional, integral, differential control--it's generic. This is for modulation of a component-not on/off as in solenoid control. The unit you would need for solenoid on/off is only a digital thermostat or a very simple temperature controller. Most I've seen have inputs for a variety of Thermocouples/Thermistors/RTD. Rob at Premier sells a 1/32 DIN Fuji unit that does it all and can be configured easily. It's cheap too. Personally, I like the solid state digital units over the mechanical ones any day.

South County
04-29-2011, 12:24 AM
The Love TS series controllers are great, they run about $77 and will read a range of inputs. They come in F or C degrees, 110 vac, 220 vac, 12 vdc with a internal 16 amp SPST relay.

Cole Parmer sells them.

gitchegumee
04-29-2011, 06:46 AM
Price is certainly right on the Love TS series. Compact unit, too. Adjustable deadband, check. Have to buy them for the voltage and units you need, but that shouldn't be a problem. Resolution (1C) and accuracy (+/- 1C) isn't so great, but may be good enough for budget-conscious. The specifications on the unit say it is a PTC thermistor only. No RTD or Thermocouple.

burlybeer
04-29-2011, 07:04 AM
I'm working on an older DME system and some of the Athena controllers that came with it were falling apart, I replaced them with these:

http://www.auberins.com/index.php?main_page=product_info&cPath=1&products_id=14&zenid=4846240617c481f38ac9e1fe4a980c06

Bierkoenig
04-29-2011, 11:04 AM
Yeah, auber is where I usually get PIDs. Good prices and fast delivery. Never had a problem with their units. One thing I like about them is that some models display temp and set point simultaneously, which rancos don't. I'll check out the love units as well.

South County
05-03-2011, 01:12 PM
Price is certainly right on the Love TS series. Compact unit, too. Adjustable deadband, check. Have to buy them for the voltage and units you need, but that shouldn't be a problem. Resolution (1C) and accuracy (+/- 1C) isn't so great, but may be good enough for budget-conscious. The specifications on the unit say it is a PTC thermistor only. No RTD or Thermocouple.


This is the correct thermocouple unit, around the same price.



http://www.coleparmer.com/catalog/product_view.asp?sku=9352001&pfx=EW

brewman21
05-04-2011, 09:48 AM
We use these ones at our brewery, a little more $, but come with
sesor probes. http://www.controlproductsonline.com/digital-temperature-controllers.html