User manual

USB TC-08 Help37

Type B thermocouple

Type B thermocouples are made from platinum and rhodium and are suitable for high temperature

measurements of up to 1820°C. Unusually, due to the shape of their temperature / voltage curve, type B

thermocouples give the same output at 0°C as at 42°C.

Type E thermocouple

Type E thermocouples are made from chromel and constantan. They have a high output (68uV/°C),

making them well suited to low temperature (cryogenic) use. They are non-magnetic.

Type J thermocouple

Type J thermocouples are made from iron and constantan. They measure temperatures in the range -

210 to +1200°C. The main application is with old equipment that can not accept the more modern

thermocouple. J types should not be used above 760°C, as an abrupt magnetic transformation will

cause permanent decalibration.

Type K thermocouple

Type K thermocouples are low-cost, general purpose thermocouples, made from chromel and alumel,

operating in the -270°C to +1370°C temperature range. Sensitivity is approx 41uV/°C.

Type N thermocouple

Type N thermocouples are made from nicrosil and nisil. The high stability and resistance to high

temperature oxidation of these thermocouples make them suitable for measuring high temperatures.

They are less expensive than platinum types B,R, and S and were designed to be an improved type K.

Type R thermocouple

Type R thermocouples are made from platinum and rhodium, and are suitable for high temperature

measurements of up to 1760°C. Low sensitivity (10uV/°C) and high cost make them unsuitable for

general purpose use.

Type S thermocouple

Type S thermocouples are made from platinum and rhodium, and are suitable for high temperature

measurements of up to 1760°C. Low sensitivity (10uV/vC) and high cost make these thermocouples

unsuitable for general purpose use. Due to their high stability, type S thermocouples are used as the

standard of calibration for the melting point of gold.

Type T thermocouple

Type T thermocouples are made from copper and constantan, are highly accurate, and operate in the -

270°C to +400°C temperature range.

USB

USB stands for Universal Serial Bus. This is a standard port that enables you to connect external

devices to PCs. A typical USB 1.1 port supports a data transfer rate of 12 Mbps (12 mega bits per

second), and is much faster than a serial port.

USBTC08_INFO