AB6E5

Thermistor is welded to 38 gauge, nickel alloy 200,

bifilar, heavy ISONEL insulated extension leads, 6.5

ft (1.98 m) ±0.5 ft (±0.15 m) long. Polyimide sleeve is

epoxied over bead and weld joints for strain relief and

insulation. Liquid epoxy resin conformal dipcoats are

applied for moisture sealing.

For use where assembly will be subjected to limited

fluid immersions and where maximum strain relief

is also required with minimum outside diameter.

Maximum continuous operating temperature is 221°F

(105°C).

0.13 in (3.2 mm) reference

72 in (1830 mm) minimum

D

AB6E8

Thermistor is welded to 38 gauge, nickel alloy 200,

bifilar, heavy ISONEL insulated extension leads 6.5 ft

(1.98 m) ±0.5 ft (±0.15 m) long. Polyimide sleeve is epoxied

over welds and thermistor for strain relief and electrical

insulation. Multiple conformal dip coatings of liquid epoxy

resin are applied for complete immersibility in conductive

fluids.

For use in applications where superior strain relief

and full immersion are required. Maximum continuous

operating temperature is 221°F (105°C).

0.13 in (3.2 mm) reference

72 in (1830 mm) minimum

D

0.25 in (6.4 mm) reference

Coding

1. Select the appropriate thermistor bead or small

probe from one of the thermistor types shown

in Table 1. Refer to the appropriate datasheet

for electrical and mechanical properties of

the thermistor selected and specific ordering

information for that thermistor.

2. Select one of the assembly types shown and use the

assembly prefix listed for that type followed by the

thermistor part number. Example: AB6A8-

BR16KA103N

This assembly uses a 0.016 in (0.40 mm) nominal

diameter, ruggedized Thermobead (Refer to NTC

Type BR Series datasheet) with adjacent cut leads, 10

kW ±25% at 77°F (25°C) nominal resistance, welded

to standard 6.5 (1.98 m) ±0.5 ft (±0.15 m) long, 38

gauge, nickel alloy 200, bifilar, heavy ISONEL insulated

extension leads with epoxy resin web between the

welded joints for strain relief.

Special Coding

The assembly types shown represent the most

standard selections of the many combinations

of thermistors and materials that Thermometrics

manufactures. These selected types are suitable for

many applications; however, there are always special

requirements that need to be satisfied for some

applications. A partial listing of alternate materials and

options is given on the next page to assist the designer

for applications in which the standard units shown are

not suitable. If assistance is required in the selection

of materials or design of the assembly, please contact

our applications engineering department and detail the

exact requirements or specifications desired.

Alternate Materials Selection

The alternate materials listed are available for NTC

Type AB6 thermistor assembly orders. Other materials

may be available to the designer or user upon special

order. Please allow additional time for the completion

of special assembly orders.

Type A Insulations

A web of insulating material is put over the weld joints

for strain relief. Available insulating materials with

maximum temperature ratings;

• Vinyl:140°F(60°C)

• Polyurethane:221°F(105°C)

• Siliconerubber:500°F(260°C)

• Epoxies:from221°Fto500°F(105°Cto260°C),

specify maximum temperature required.

Type B Insulations

A polyimide sleeve is epoxied over the weld joints for

improved strain relief and electrical insulation. The

bead may be covered for maximum strain relief or

exposed for faster response. Epoxies are generally

used to fill the polyimide sleeve and have temperature

ratings from 221°F to 500°F (105°C to 260°C).

Type C Insulations

Multiple conformal dip coats over the thermistor and

welds are used in order to provide fully immersible

assemblies. Any of the Type A insulating materials may

be used for the conformal dip coatings depending

upon the application or environment.

Type D Insulations

A thermoplastic tubing is heat sealed over the bead or

probe thermistor. A small amount of insulating material

is applied over the weld joints for electrical isolation.

The assembly is not fully immersible over the back end

of the tubing. Available heat sealed tubing materials

with maximum temperature ratings:

•

Polyethylene:176°F(80°C)

•

Mylar:257°F(125°C)