Industrial assembled thermocouple | 0℃～1800℃

Name: Industrial assembled thermocouple | 0℃～1800℃ | Customizable
Brand: Sino-Inst
SKU: Industrial Assembled Thermocouples
Price: 69 USD
Availability: InStock

As a sensor for measuring temperature, industrial assembled thermocouples are usually used in conjunction with display instruments, recording instruments and electronic regulators. It can directly measure the surface temperature of liquid, steam and gas media as well as solids in various production processes ranging from 0℃ to 1800℃.

We Sino-Inst produce and supply platinum-rhodium 30-platinum-rhodium 6, platinum-rhodium 10-platinum, nickel-chromium-nickel-chromium, nickel-chromium-copper-nickel, copper-copper-nickel, iron-copper-nickel in accordance with IEC national standard graduation numbers Other types of thermocouples.

RFQ Temperature Sensors

Assembled thermocouple technical parameters

Assembled thermocouple types and temperature measurement range
Type	Temperature measuring element material	Division No	The wire diameter and temperature relationship
Type	Temperature measuring element material	Division No	Wire diameter(mm)	Long term temperature ℃	Short term temperature ℃
WRR	Platinum rhodium 30-Platinum rhodium 6	B	φ0.5	1600	1800
WRQ	Platinum rhodium 13-Platinum	R	φ0.5	1300	1600
WRP	Platinum rhodium 10-Platinum	S	φ0.5	1300	1600
WRN	Nickel chromium-Nickel silicon	K	φ0.3	700	800
			φ0.5	800	900
			φ0.8、1.0	900	1000
			φ1.2、1.6	1000	1100
			φ2.0、2.5	1100	1200
			φ3.2	1200	1300
WRE	Nickel chromium-Copper nickel	E	φ0.3	350	450
			φ0.5	450	550
			φ0.8、1.0	550	650
			φ1.2、1.6	650	750
			φ2.0、2.5	750	900
WRF	Iron-constantan	(J)	φ0.3、φ0.5	300	400
			φ0.8、1.0	400	500
			φ1.2、1.6	500	600
			φ2.0、2.5	600	750
WRC	Copper – Copper nickel	(T)	φ0.2	150	200
			φ0.3、0.5	200	250
			φ1.0	250	300
			φ1.6	350	400
Note:The brackets mark is generally not recommended,If ordering please contact the company!

Thermal response time:
When there is a step change in temperature, the time required for the output of the thermocouple to change to equal to 50% of the change is called the thermal response time, represented by T0.5.

Thermocouple nominal pressure:
Generally refers to the static external pressure that the protective tube can withstand at room temperature without rupture. In fact, the allowable working pressure is not only related to the protective tube material, diameter and wall thickness. It is also related to its structural form, installation method, insertion depth, and the flow rate and type of the measured medium.

The minimum insertion depth of the thermocouple: should be no less than 8 to 10 times the outer diameter of the protective tube (except for special products).

Thermocouple insulation resistance (normal temperature):

The test voltage of insulation resistance at room temperature is DC 500V±50V. The atmospheric conditions for measuring insulation resistance at room temperature are temperature 15~35℃, relative humidity 45%, and atmospheric pressure 86~106kPa.

For thermocouples with a length exceeding 1 meter, the product of its normal temperature insulation resistance value and its length should not be less than 100MΩ.m;
That is, Rr.L≥100 MΩ.m, L>1m.
Where: Rr-the length of the thermocouple m.

For thermocouples with a length equal to or less than 1 meter, its insulation resistance value at room temperature should not be less than 100 MΩ.

Upper limit temperature insulation resistance:

Upper limit temperature tm ℃	Test temperature t℃	Resistance value MΩ
100≤tm＜300	t=tm	10
300≤tm＜500	t=tm	2
500≤tm＜850	t=tm	0.5
850≤tm＜1000	t=tm	0.08
1000≤tm＜1300 tm＞1300	t=1300	0.02

Protection Tube
Protection tube material	Long term temperature ℃	Short term temperature ℃
CT1 Corundum	1600	1800
CT2 High alumina	1300	1600
Nickel base Wrought Superalloys 3YC52	1300	1350
Nickel base Wrought Superalloys GH3039	1250	1320
Nickel base superalloy GH3030	1200	1250
Heat resistant stainless steel 2Cr25Ni20	1200	1250
Silicon carbide	1100	1150
Stainless steel 316L	900	950
Stainless steel 1Cr18Ni9Ti	800	900

Order Guide

Temperature instrument

Thermocouple

Platinum rhodium 30—Platinum rhodium 6

Temperature measuring element material

Platinum rhodium 13—Platinum

Platinum rhodium 10—Platinum

Nickel chromium silicon—Nickel silicon magnesium

Nickel chromium—Nickel silicon

Nickel chromium—Copper nickel

Iron —constantan

Copper —Copper nickel

Single

Temperature sensor options

Double branch

No protection tube

Fixed form

No fixed device

Fixing screw

Movable flange

Fixed flange

Rectangular movable flange

Fixed thread taper protection tube

No terminal box(components)

Connection box

All stainless stee

Waterproof type

Explosion proof type

φ16mm

Design sequence

φ25mm Double-deck

φ16mm High alumina

φ20mm High alumina

W R N— 2 3 0 (example)

Industrial Assembled Thermocouples Types

**Non fixture type(ceramic and corundum protective tube)**

**Non fixture type(Silicon carbide protective tube)**

**Fixed thread type(ceramic and corundum protective tube)**

**Movable flange right angle type(Silicon carbide protective tube)**

**Conical protective tube fixed thread type**

The difference between fabricated thermocouples and Sheathed Thermocouples

Both fabricated and armored thermocouples are sensors that measure temperature.

The assembled thermocouple is composed of thermocouple core, insulation layer, metal protection tube and connector. A thermocouple core consists of interlaced wires of two different materials. At the junction of two metals, the thermoelectric effect caused by the temperature difference is called thermoelectromotive force, and the magnitude of thermoelectromotive force is proportional to the temperature difference.

Armored thermocouples are formed by encasing the thermocouple core in a metal sleeve (armored tube) and sealing it. Armored tubes can play a protective role.

Response time: The response time of armored thermocouples is slower.
Usage scenarios: Assembled thermocouples are suitable for measurements within a general temperature range, while armored thermocouples are suitable for measurements that require higher accuracy, a larger measurement range, and high-temperature environments.
Cost: The cost of armored thermocouples is higher.

When selecting a thermocouple, the main factors to consider include temperature range, measurement accuracy, response time, interference immunity, reliability and cost.

For occasions where temperature in high temperature environments needs to be measured and accuracy is required, armored thermocouples can be selected;
For temperature measurement under normal circumstances, it is enough to choose an assembled thermocouple.