Tempco offers three standard Circulation Heater designs that are compact lightweight unit used for heating gases or liquids. The material being heated is pumped through the coiled seamless 316 SS tubing which has been cast into an aluminum body that acts as the heat exchanger. A cartridge or tubular heating element is the heat source. The material being heated never comes into contact with the heating element.
- CHX Series
- Electrical Terminations
- Termination Protection
- Cooling/Flow Tube Fittings
- Thermocouple Calibration
- Bayonet Style Thermocouple
- Thermocouple Terminations
- Thermostats
CHX Series
CHX – 100 Series
- Replaceable 5/8″ diameter Hi-Density Cartridge Heater
- Cast Aluminum heat exchanger body
- Operating pressure up to 3000 PSI
- Operating temperature up to 350°F (177°C)
- Heater Lengths: 6.5″ and 12.5″
CHX – 200 Series
- Cast-In Tubular Heater
- Cast Aluminum heat exchanger body
- Operating pressure up to 3000 PSI
- Operating temperature up to 392°F (200°C)
- Heater Lengths: 13.5″, 17.75″, and 23.75″
- Single- or Three-Phase
CHX – 300 Series
- Cast-In Tubular Heater
- Cast Aluminum heat exchanger body
- Operating pressure up to 3000 PSI
- Operating temperature up to 392°F (200°C)
- Heater Lengths: 13.5″, 19.5″, and 25.5″
- Single- or Three-Phase
Electrical Terminations
Type CN: NPT Fitting
A double threaded pipe fitting is attached to the end of a cartridge heater to allow for installation into a threaded hole. Brass fittings are silver brazed and stainless steel fittings are heli-arc welded.
Type T: Mica Insulator
Mica insulator is the same diameter as the heating element.
.260″ diameter heater has 6-32 screw terminals.
.315″ diameter heater has 8-32 screw terminals.
.430″ diameter heater has 10-32 screw terminals.
Type T7: Ceramic Insulator
Ceramic insulator is the same diameter as the heating element.
.260″ diameter heater has 6-32 screw terminals.
.315″ diameter heater has 8-32 screw terminals.
.430″ diameter heater has 10-32 screw terminals
Termination Protection
NEMA 4 Box
NEMA 4 enclosure with standoff
NEMA 7 Box
NEMA 7 enclosure with standoff
Type C2: Standard Terminal Box (on flat pad)
Type C2 is an individual terminal box for protecting the terminals on each Cast-In Band Heater half and on many other Cast-In Heater designs with one set of heater terminals.
The C2 box design requires a flat pad on half-round castings or a flat surface on other casting designs for mounting. It is made from heavy gauge, rust-resistant sheet metal. The cover is removable for easy access to terminals. The box has two 7/8″ diameter knockouts opposite each other for standard 1/2″ BX connectors.
Type EP: Explosion & Moisture Resistant Box
Cast iron explosion and moisture resistant boxes should be used in areas where the surrounding air may become contaminated with combustible gases or a high humidity level may exist. Installation requires one box per Cast-In Heater half and they are brazed to the tubular heater. The standard box has one 1/2″ NPT hub.
Type MPR: Moisture Resistant Box
This design has a moisture resistant die cast aluminum box with a non-removable polyurethane gasket in the lid. Lid is secured with captive stainless steel screws. Body and lid are painted in basic industrial gray; interior contains copper ground screw. Box is mounted to a plate that is brazed to the element. Available in a wide variety of sizes.
Cooling/Flow Tube Fittings
Type FF: Flared Seal Fittings
Brass flared seal fittings are well adapted for low to medium
pressure and resistant to mechanical pullout. Available for 3/8″ and 1/2″ diameter tubing with SAE 45° flare.
| Diameter Tubing |
Thread | Part Number |
|---|---|---|
| 3/8″ | 5/8″-18 | FTG-124-101 |
| 1/2″ | 3/4″-16 | FTG-124-104 |
Type HS: Hi-Seal Fittings
Hi-seal brass fittings are highly dependable under the most adverse conditions. For reliable and trouble-free service with ease of installation, we strongly recommend hi-seal fittings.
Available for 3/8″ and 1/2″ diameter tubing. Male thread is 1/2″ NPT for 1/2″ tube and 3/8″ tube.
| Diameter Tubing |
Part Number |
|---|---|
| 3/8″ | FTG-118-124 |
| 1/2″ | FTG-118-116 |
Thermocouple Calibration
Type J
United States, Canada, Mexico: Iron/Constantan, Temperature Range: 32-1382°F (0-750°C)
Type K
United States, Canada, Mexico: Chromel®/Alumel, Temperature Range: 32-2282°F (0-1250°C)
Bayonet Style Thermocouple
Style 1: Spring Adjustable Bayonet Thermocouple
Design Features
- Insertion length adjustable from 1″ to 10″.
- Forms easily to any angle.
- One style can replace several fixed length thermocouples.
- Use with bayonet adapters on page 14-87.
Style 2: Armor Cable Adjustable Bayonet Thermocouple
Design Features
- Insertion length adjustable over length of armor cable.
- Forms easily to any angle.
- One style can replace several fixed length thermocouples.
- Use with bayonet adapters on page 14-87.
Thermocouple Terminations
Style B: Plain Leads
Split leads with plain ends
Style S: Spade Lugs
Split leads with spade lugs on both leads
Style P: Standard Plug
Standard Plug end
Thermostats
High Limit
General purpose high limit switch with manual reset
Once fixed opint is reached, the high limit switch will remain open until the manual reset button is pushed
SPST
General purpose thermostat recommended for most applications
Capable of controlling loads from 120V/30A up to 480V/20A
DPST
Recommended for directly controlling high wattage loads due to its heavy duty contacts
Capable of controlling loads up to 30 Amps at 277 VAC and 10 Amps at 480 VAC