- Omega 8 Channel Thermocouple USB Data Acquisition Module User's Guide

Technical reference

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 41 uV/°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 (10 uV/°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 (10 uV/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. 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 megabits per second), and is much faster than a COM port.

USBTC08_INFO. This structure is used to receive information from the

usb_tc08_get_unit_info function and is defined in the usbtc08.h header file. Note: If

the programming language you are using does not support structures, use the

usb_tc08_get_formatted_info function.

typedef struct tUSBTC08Info

{

short size;

short DriverVersion;

short PicoppVersion;

short HardwareVersion;

short Variant;

char szSerial[USBTC08_MAX_SERIAL_CHARS];

char szCalDate[USBTC08_MAX_DATE_CHARS];

} USBTC08_INFO, *LPUSBTC08_INFO;