Pax Instruments T400

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Pax Instruments T400
Pax instruments t400.jpg
Status unsupported
Source code [1]
Connectivity USB serial port
Measurement range (A) -270 - 1370 C
Resolution 0.1 C
Accuracy (94dB@1kHz) 1.5 C
Website paxinstruments.com

The Pax Instruments is a logging thermometer with four thermocouple inputs, USB connectivity, and MicroSD storage. It supports K type thermocouple.

Hardware

  • Microcontroller: ATmega32U4, 8 MHz, 3.3 V
  • ADC: MCP3424
  • Junction temperature: MCP9800
  • Screen: 132x64 LCD

Protocol

The T400 output CSV data in ASCII format over a USB serial port. Upon device boot or when a new log file is starter a header is also output.

Here is a sample of serial output when a new logging session has started.

v0.14-beta
File: LD0041.CSV
time (s), temp_0 (C), temp_1 (C), temp_2 (C), temp_3 (C)
      0, 24.86, 24.30, 25.83, 23.48
      1, 24.86, 24.30, 25.83, 23.48
      2, 24.86, 24.30, 25.83, 23.28
      3, 24.79, 24.22, 25.56, 23.21
      4, 24.99, 24.22, 25.56, 23.04
      5, 24.79, 24.22, 25.56, 23.21
      6, 24.74, 24.17, 25.51, 22.99
      7, 24.99, 24.22, 25.36, 23.04
      8, 24.94, 24.17, 25.31, 22.99
      9, 24.94, 24.17, 25.31, 22.99
     10, 24.94, 24.17, 25.31, 22.99
     11, 24.94, 24.17, 25.31, 22.99


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