Thermocouple Head& Junction Box

Short Description:

The thermocouple head is an important part of the construction of an accurate thermocouple system. Thermocouple and RTD connection heads provide a protected, clean area for mounting a terminal block or transmitter as part of the transition from temperature sensor assembly to lead wire.

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Product Detail

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Product Overview

The head is used to house the thermocouple terminal block. The block also connects the thermocouple element to the extension wire. The head's function is twofold. To protect the connections from the elements. It also maintains a constant temperature around the connections.

As an added benefit, JEORO provides private brand OEM labeling of its thermocouple and RTD heads upon request. Connection heads are available as separate components or as a part of complete temperature sensor assemblies.

Thermocouple heads are available in a variety of materials and NPT process thread sizes. We stock metalheads in Aluminum, Cast Iron, Stainless Steel, Brass, and Nickel Plated Steel. We also stock plastic heads in Polypropylene, Delrin, and Nylon.

Specifications

● Material: Cast Iron, Cast Aluminum, Cast Aluminum, Nylon, 316 Stainless Steel.

● Terminals: Single elements, No terminal block, Duplex element.

● Process Connection: 1/2NPT, 3/4NPT, G1, G1/2, M20*1.5.

● Protection Tube Entry: 1/2NPT, 3/4NPT, G1, G1/2, M20*1.5.

● Functions: General Purpose, Weatherproof, Corrosion Resistant, Explosion-Proof.

Product Details

Thermocouple Installation

1. Carefully select the location and insertion depth at a point where the temperature is most likely representative of the process temperature. It is important to avoid stagnant areas of the measured media which do not have representative temperatures.

2. Locating the thermocouple where the hot end can be seen assures visual confirmation of the junction location.

3. Immerse the thermocouple far enough to ensure that the measuring junction is entirely included in the temperature area to be measured. a depth ten times that of the diameter of the protection tube is recommended. The heat that is conducted away from the hot junction will cause a lower reading due to "stem loss."

4. Keep the connecting head and cold junction in the coolest ambient temperature available.

5. To prevent breakage due to thermal shock, never insert a ceramic tube into a hot area rapidly. Preheat gradually while installing.

6. Avoid direct flame impingement on protecting tube. Impingement shortens the tube life and causes the temperature readings to be inaccurate.

7. When measuring high temperatures, install the thermocouple vertically, whenever possible. Such installation minimizes the sagging of the tube or sheath.

Terminal block

N-2P-C	2 poles	Ceramic	68g
N-3P-C	3 poles	Ceramic	82g
N-4P-C	4 poles	Ceramic	100g
N-6P-C	6 poles	Ceramic	120g
N-2P-B	2 poles	Bakelite	56g
N-3P-B	3 poles	Bakelite	70g
N-4P-B	4 poles	Bakelite	84g
N-6P-B	6 poles	Bakelite	100g