Cu-CuNi thermocouple (type T) is also named Cu- Constantan
thermocouple.
The positive leg Cu(TP) is made by pure Copper, and the main
chemical composition of negative leg Constantan (TN) is Cu: Ni≈
55%: 45%.
Although EN, TN, JN are all called Constantan, TN and EN don not
give the same EMF output curve as JN. EN and TN are able to
interchange but they are not interchangeable with JN.
The operating temperature range of type T thermocouple is
-200~350°C, Due to the low resistance of oxidation that Copper has,
it is not advisable to go beyond that range.
Type T thermocouple has good resistance to oxidation, high EMF
output, with good
temperature accuracy, sensitivity and stability.
In the temperature range -200~0°C, it has better property, the year
stability is less
than ±3μV
NiCr-NiSi (Type K) thermocouple wire
NiSi (Type K) thermocouple finds the widest use in all base metal
thermocouple, at
temperature above 500°C.
The main chemical composition of positive leg NiCr (KP) are Ni≈90%
and Cr≈10%; negative leg NiSi (KN) are Ni≈97% and Cr≈3%. The
operating temperature range is -200~1300°C(for short term) and
0~1100°C( for long term).
Type K thermocouple has strong resistance to oxidation than other
base metal thermocouples. It has high EMF against Platinum 67,
excellent temperature accuracy, sensitivity and stability, with a
low cost. It is recommended for oxidizing or inert atmospheres
NiCr- CuNi(Constantan) thermocouple (Type E)
NiCr- CuNi thermocouple (type E) is also named NiCr- Constantan
thermocouple. The main chemical composition of positive leg NiCr
(EP) is Ni: Cr≈90:10; negative leg Constantan (EN) is Cu: Ni≈ 55%:
45%. Although EN, TN, JN are all called Constantan, EN and TN don
not give the same EMF output curve as JN. EN and TN are able to
interchange but they are not interchangeable with JN. The operating
temperature range of type E thermocouple is -200~900°C.
Type E thermocouple has the largest EMF output and highest
sensitivity, so it is ideal for measuring small temperature change.
It also has good stability in the low temperature range up to
300°C, and good property of anti-corrosion in humidity atmosphere.
It is recommended for oxidizing or inert atmospheres, but cannot be
used directly in reducing atmosphere and atmosphere with sulphur
gases.
Nicrsi-NisiMg (Type N) thermocouple
Nicrsi-NisiMg (Type N) thermocouple is the latest base metal
thermocouple,
developed to improve the drawbacks that type K thermocouple has.
The main chemical composition of positive leg Nicrsi (NP) is Ni:
Cr: Si≈84.4: 14.2: 1.4;
negative leg NisiMg (NN) is Ni: Si: Mg≈95.5: 4.4: 0.1. Type N
thermocouple also be used in the similar atmospheres that
type K works, and the operating temperature range is -200~1300°C.
Type N thermocouple improves the EMF drift and short term EMF
change, compared to type K thermocouple, and has a longer life than
type K thermocouple. Therefore, in the industries where temperature
control and measurement are especially critical, type N
thermocouple has more advantages than other thermocouple as it has
long life and stable thermal EMF.
Shanghai Tankii Alloy Material Co., Ltd. Focus on the production of
resistance alloy(nichrome Alloy, FeCrAl Alloy, copper nickel alloy,
thermocouple wire, precision alloy and thermal spray alloy in the
form of wire, sheet, tape, strip, rod and plate. We've already got
ISO9001 quality system certificate and approval of ISO14001
environmental protection system. We own a complete set of advanced
production flow of refining, cold reduction, drawing and heat
treating etc. We also proudly have independent R&D capacity.
Shanghai Tankii Alloy Material Co., Ltd has accumulated lots of
experiences over 35 years in this field. During these years, more
than 60 management elites and high science and technology talents
were employed. They participated in every walk of the company life,
which make our company keep blooming and invincible in the
competitive market. Based on the principle of "first quality,
sincere service", our managing ideology is pursuing technology
innovation and creating the top brand in the alloy field. We
persist in Quality - the foundation of the survival. It is our
forever ideology to serve you with full heart and soul. We
committed to provide customers all over the world with
high-quality, competitive products and perfect service.
Our products, such us nichrome alloy, precision alloy, thermocouple
wire, fecral alloy, copper nickel alloy, thermal spray alloy have
been exported to over 60 countries in the world. We are willing to
establish strong and long-time partnership with our customers. Most
complete range of products dedicated to Resistance, Thermocouple
and Furnace manufacturers Quality with end to end production
control Technical support and Customer Service.