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Seamless Incoloy Sheath Strip Heaters
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Strip-heater advantages for higher temperature applications are offered by
NS series. The heater design, materials and construction give long life for
given power densities. The Incoloy sheath encloses nickelchromium resistance
wire embedded in a densely compacted refractory material selected for dielectric
insulation value and good heat conduction to the sheath. The small cross-section
is often an advantage where space is a factor.
Clamp-on temperatures to 1200°F
Maximum work temperature
depends on the watt density of
the heater. Table 1 gives a few
examples of work temperatures
at different watt densities. Figure
C-11 of the Heater Selection
Nomographs page can be used to
determine allowable watt densities
for other specific temperatures.
Mounting
The flat top and bottom
surfaces may be flush mounted
or sandwiched between two heatconducting
metal parts. Straight
heaters can be mounted on
surfaces curved to 6" (15 cm) inside
radius or larger. The heater may be
field bent to minimum 3 " (8 cm)
inside radius. Standard strip heater
clamps and clamping bands may be
used for mounting.
In free or forced air, sheath
temperature to 1500°F, maximum
work temperature depends on the
watt density of the heater. Table
gives a few examples of work
temperatures at different watt
densities.
| Max. Work
Temperature °F |
| Application | 30 W/in2 | 20 W/in2 | 10 W/in2 |
| Clamp-on | 300 | 750 | 950 |
Convection
Air Heating | 950 | 1200 | 1350 |
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| Dimension-Inches (cm) NS
Series. Incoloy Sheath |
NSL Series. 10" Wire Type
Leads |
| A
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B
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Watts
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W/In2
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Model
No.
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Model
No.
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Wt.
(lb) kg
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| 121/2 (32)
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87/8 (23)
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500
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32
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NS-1205/**
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NSL-1205/**
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.63 (.28)
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| 133/4 (35)
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101/8 (26)
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500
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28
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NS-1405/**
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NSL-1405/**
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.68 (.30)
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| 157/16 (39)
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1113/16 (30)
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500
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24
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NS-1505/**
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NSL-1505/**
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.73 (.33)
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| 1713/16 (45)
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143/16 (36)
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750
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30
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NS-1807/**
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NSL-1807/**
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.90 (.40)
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| 181/2 (47)
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147/8 (38)
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1000
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38
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NS-1801/**
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NSL-1801/*
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.93 (.42)
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| 193/8 (49)
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153/4 (40)
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1000
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36
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NS-1901/*
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NSL-1901/*
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1.0 (.45)
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| 217/16 (54)
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1713/16 (45)
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1100
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35
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NS-2001/**
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NSL-2001/*
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1.1 (49)
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| 233/4 (60)
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201/8 (51)
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1200
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34
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NS-2401/*
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NSL-2401/*
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1.2 (.54)
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| 251/4 (64)
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215/8 (55)
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1300
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34
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NS-2501/*
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NSL-2501/*
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1.25 (.56)
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| 2615/16 (68)
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235/16 (59)
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1400
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34
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NS-2601/**
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NSL-2601/*
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1.30 (.59)
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| 303/16 (77)
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269/16 (67)
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1500
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32
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NS-3015/*
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NSL-3015/*
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1.52 (.68)
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| 3315/16 (86)
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305/16 (77)
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1500
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28
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NS-3301/**
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NSL-3301/*
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1.68 (.76)
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| 363/8 (92)
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323/4 (83)
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1850
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32
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NS-3601/*
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NSL-3601/*
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1.85 (.83)
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| 39 (99)
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353/8 (90)
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2000
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32
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NS-3802/*
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NSL-3802/*
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2.00 (.90)
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| 403/4 (104)
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371/8 (94)
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2100
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32
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NS-4302/*
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NSL-4302/*
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2.13 (.96)
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| 513/8 (130)
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473/4 (121)
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2700
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32
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NS-4827/**
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NSL-4827/*
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2.7 (.12)
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| 54 (138)
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503/8 (128)
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3000
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34
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NS-5403/***
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NSL-5403/***
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2.75 (.12)
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/* Designate voltage, i.e.; insert 120V for 120 or 240V or 480V voltage required.
/** 120 or 240 Vac only.
/*** 240 or 480 Vac only.
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† All dollar amounts on this site are shown in US currency.
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Part Number Builder |
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Option Descriptions
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(1)
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Style
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Select
NS for NS series-incoloy sheath
NSL for NSL Series- 10 in. wire type leads
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(2)
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Size Power and Watt Density from Table Above
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Select
1205 for 1205
1405 for 1405
1505 for 1505
1807 for 1807
1801 for 1801
1901 for 1901
2001 for 2001
2401 for 2401
2501 for 2501
2601 for 2601
3015 for 3015
3301 for 3301
3601 for 3601
3802 for 3802
4302 for 4302
4827 for 4827
5403 for 5403
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(3)
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Voltage
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Select
120V for 120 Vac
240V for 240 Vac
480V for 480Vac
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NOTE: All combinations may not be valid, check spec sheet for valid part numbers.
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