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TEMPCO Electric Heater Corporation
Electric Infrared Radiant Heaters


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Quartz Tubular Elements

Quartz heaters consist of a helically wound resistance coil
housed in a tube of pure vitreous silica fused quartz tube.

 

Ceramic End Cap Dimensions
Quartz Tube OD "A" "B"
3/8" 3/8" 5/8"
1/2" 1/2" 7/8"
5/8" 1/2" 7/8"

Design Features

  • Good Radiant Efficiency - up to 79%

  • 40 to 50 seconds Heat-up time and less than 15 seconds Cool-down Time

  • Watt Density up to 40 watts / sq. in.

  • Infrared Wavelength Range from 2.5 to 6µm

Dimensional Specifications
Diameters: 3/8", 1/2" and 5/8"
Max. Length: 3/8" diameter 50", 1/2" diameter 100", 5/8" diameter 100"
Length Tolerance: Minimum ±1/8" up to 12" long, ±2% over 12" long
 

Electrical Specifications
Max. Volts: 480 Volts
Max. Amperage: 20 Amps
Resistance Tolerance: +10%, −5%
Wattage Tolerance: +5%, −10%
Max Watt Density: 40 Watts/in2

Warning: Quartz Heaters are Designed to be Used in a Horizontal Position Only.

 

 

Standard Sizes and Electrical Ratings with Type T1 Termination

For other Terminations a Part Number will be issued at time of order.

Quartz Tube Diameter Overall Length Heated Length Watts Part Number
in mm in mm 120V 240V
3/8" 14 355.6 12-1/2 317.5  480 KRD00001 KRD00002
20 508 18-1/2 469.9  720 KRD00003 KRD00004
26 660.4 24-1/2 622.3  960 KRD00005 KRD00006
38 965.2 36-1/2 927.1 1450 KRD00007 KRD00008
48 1219.2 46-1/2 1181.1 1900 — KRD00009
1/2" 18 457.2 16-1/2 419.1  900 KRD00010 KRD00011
20 508 18-1/2 469.9  900 KRD00012 KRD00013
26 660.4 24-1/2 622.3 1200 KRD00014 KRD00015
36 914.4 34-1/2 876.3 1800 KRD00016 KRD00017
38 965.2 36-1/2 927.1 1800 KRD00018 KRD00019
42 1066.8 40-1/2 1028.7 1580 KRD00020 KRD00021
48 1219.2 46-1/2 1181.1 1820 KRD00022 KRD00023
50 1270 48-1/2 1231.9 2400 — KRD00024
54 1371.6 52-1/2 1333.5 2060 — KRD00025
60 1524 58-1/2 1485.9 2300 — KRD00026
66 1676.4 64-1/2 1638.3 2540 — KRD00027
72 1828.8 70-1/2 1790.7 2780 — KRD00028
5/8" 24 609.6 21 533.4 1075 KRD00029 KRD00030
26 660.4 23 584.2 1800 KRD00031 KRD00032
30 762 27 685.8 1375 KRD00033 KRD00034
38 965.2 35 889 2500 — KRD00035
42 1066.8 39 990.6 1975 KRD00036 KRD00037
48 1219.2 45 1143 2275 — KRD00038
50 1270 47 1193.8 3400 — KRD00039
54 1371.6 51 1295.4 2575 — KRD00040
60 1524 57 1447.8 2875 — KRD00041
62 1574.8 59 1498.6 4200 — KRD00042
66 1676.4 63 1600.2 3175 — KRD00043
72 1828.8 69 1752.6 3475 — KRD00044

 

Termination Types

Type T1  Standard Termination
10-32 thread screw terminal standard termination.
Type T2  Panel Mount Bushings
10-32 thread screw terminals with extension bushings for CRA/TRH housing assemblies.
Type T3  End Caps with Slots
Slots in ceramic end caps are for mounting in grooved sheet metal housings. Coil tension and the slots hold the heater in place and allow for thermal expansion of the assembly. 1/4" quick-disconnect tabs standard for lead wire termination. Screw terminals optional.
Type ST  Tabs with Slotted Holes
1/2" wide by 3/4" long, with a 9/32" by 3/8" slot.
Type FT  Quick Disconnect Fuse Type
Fuse type connector provides ease of installation. 
Connectors are 3/8" OD by 1/2" long brass.
Type L1  Straight-Out Leads
10" flexible lead wire externally spliced standard. If longer leads are required, specify.
Type C4  Ceramic Caps with Leads
This termination provides 10-32 screw terminals insulated with ceramic terminal covers. Screws are pre-wired with 10" flexible lead wire. If longer leads are required, specify.