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OHM EQUIPMENT |
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PO Box 538 Millville, NJ 08332
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| EXCELLENCE IN EVERYTHING WE DO |
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FURNACES |
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GLORY HOLES |
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ANNEALERS |
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KILNS |
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GARAGE & PIPE WARMERS |
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ACCESSORIES |
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CONTROL COMPONENTS |
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SAFETY SYSTEMS |
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CUSTOM SOLUTIONS CONTACT US |
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ENERGY BASICS |
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CONTROL: |
There are many control solutions for each device. The following are basic standard options for each. The possibilities are vast if you want a tricked out shop. The sky's the limit and we'll be happy to talk with you about options. |
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Furnaces: The basic devices used to control furnace burners are the following. 1) a microprocessor controller 2) an S-type thermocouple 3) an actuator with an automatic butterfly valve 4) an air induction line 5) a proportional gas regulator 6) a manual air valve and 7) a manual gas valve.
Our controller of choice is a Honeywell UDC 2500 and all valving is Eclipse. The cost for this system is ....$2420
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Glory Holes: Most glory hole control is manual and is our preference, however they can be hooked up just like a furnace for automated temperature control. The manual controls involve the following. 1) an LP mixer 2) a zero governor 3) a manual butterfly valve for air.
We use Eclipse devices and the cost installed is typically $890.
The price can vary depending on size and fuel type
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| Honeywell furnace control with Digitry annealer control |
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| Annealers/Kilns: Temperature control for these devices is relatively simple but the choices are quite numerous. The basics of controlling these devices involves 1) a microprocessor controller (digitry, watlow, love, honeywell) 2) a K-type thermocouple 3) relays. Our choice for rental studios and schools is a Digitry GB-5...$1635 and for the private studio a Watlow 981...$445
As for relays, mercury are the cheapest but will soon be banned. I reccomend solid state relays at this point. Price varies with amperage demands but you can estimate about $2 per amp.
Control systems can get as complex as you like. We have made systems to control multiple zones, installed panel meters to check 12 remote thermocouples, used proportional element control to name a few. If you want something fancy it can be done but this is not common
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| Watlow 981/982 annealer controller |
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| Garage/Pipewarmer: This is by far the most basic control system in a shop. Each device uses a Venturi mixer with a nozzel burner tip..$230(installed) and is controlled with a manual adjustment valve...$80
The garage uses an analog pyrometer to verify temperature ,,,$150
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