NB1-2 / 2-3 / DH-1 / 1-385H - Ceramic Insulated Thermocouple Elements Inserted into Thermowells

Ceramic Insulated Thermocouple Elements Inserted into Thermowells
NB1-2 / 2-3 / DH-1-14-K-12 / 1-385H-U41/2-304SS

Ceramic insulated thermocouple elements can be used to make HWA assemblies. Here, the protection head is attached to the thermowell with a Type 2 extension assembly. The thermocouple element is housed inside and is wired to the terminal block inside the protection head. Spring loading is not available in this configuration.

A Type 4 extension assembly can also be used in this type of HWA assembly. This nipple-union-nipple extension assembly allows for disassembly of the unit without having to spin the protection head (which may be hooked up to conduit).

How To Order
Ordering an HWA assembly is easy. Simply follow the part number format below:
HWA / NB1-2 / 2-3 / DH-1-14-K-12 / 1-385H-U41/2-304SS

NB1-2 - $26
NB1 type cast iron protection head with a two-position terminal block. See thermocouple head selection guide for a complete listing of available protection heads.

2-3 - $5
Type 2 extension assembly; 3" long assembled. Either a Type 2 or Type 4 extension assembly can be used with this style HWA. See thermocouple head selection guide for complete selection of extension assemblies.

DH-1-14-K-12 - $17
Double hole ceramic insulated thermocouple element, type K, 14 AWG, 12" length. See Section A. The length of this thermocouple should be the element (stem) length of the thermowell desired (6"), plus the extension assembly length (3"), plus 3", for a 12" total.

1-385H-U41/2-304SS - $42
Heavy duty thermowell, 1" NPT thread, 0.385" bore for up to 3/8" dia. elements. 4 1/2 " insertion length, 6" stem/element length. The bore size of the well (.385" in this case) must exceed the outside dimensions of the ceramic insulators

Total HWA price - $90