Datasheet

MAX31855 Evaluation Kit
Evaluates: MAX31855
3Maxim Integrated
Read from the MAX31855 Section
Interfacing to the MAX31855 is simple. The interface
is read-only and consists of one 32-bit shift register.
When the Single Read button is pressed, all 32 bits
are read, parsed, and then displayed. The raw data
read from the device is shown in both binary and hexa-
decimal format in the edit boxes labeled Raw B[31:0].
Furthermore, the four fault bits are analyzed and then
their states are indicated in the Alarm Status sec-
tion. The Raw Thermocouple Temperature and Cold
Junction Temperature edit boxes are calculated. And
finally, the Linearized Thermocouple Temperature edit
box is calculated using the sensitivity value and NIST
coefficients to compensate for thermocouple nonlineari-
ties. Refer to the MAX31855 IC data sheet for additional
information.
Multiple Reads Section
This section allows the user to enter a desired number
of samples (temperature readings) as well as the delay
between the samples (in milliseconds) in order to auto-
mate temperature readings. It is also possible to write the
results to a file by clicking the Log to file checkbox and
providing a folder and filename for the comma separated
value (.CSV) file to be stored.
Figure 1. MAX31855 EV Kit GUI