Pico TC08 USB THERMOELEMENT DATA LOGGER PP222 Manual Do Utilizador

channel

- Specifies from which channel to read temperature.  Should be 0 for

CJC, 1 for Channel 1, 2 for Channel 2 and so on.

temp

- Pointer to a location where readings are to be placed. Each reading

should be compared with 2147483647L or LONG_MAX (include
limits.h) to check for overflows.  An overflow occurs when the input
signal is higher than the measuring range of the USB TC-08.

filtered

- Specifies whether or not to filter the data.  The readings are median

filtered if set to 1. 0 causes the unfiltered temperature to be stored in

temp

. The filter has a depth defined by the filter factor, set during a

 call.

0

- Use 

.

1

- Temperature retrieval successful.

Note: This function should not be called unless you are operating the USB TC-08 in legacy mode,
having called 

.

short usb_tc08_legacy_get_cold_junction (long * temp,

short handle)

This routine retrieves a cold junction temperature reading. This can also be achieved by passing
channel = 0 to 

. Temperatures are returned in hundredths of a degree Centigrade.

Normally, you do not need to worry about the cold junction temperature, as the driver automatically
uses it to compensate thermocouples. It can, however, be useful as an indication of ambient
temperature.

handle

- Specifies USB TC-08 unit.

temp

- Pointer to a location where the temperature reading is to be stored.

0

- Use 

.

1

- Retrieval of cold junction temperature reading successful.

short usb_tc08_legacy_get_driver_version (void)

This routine returns the driver version. This is useful when you need to find out if the latest driver is being