Temperature Module

The Temperature Module is an optional plug-in data acquisition module for PRAP and ZAP. Its use requires the Basic Data Acquisition Module. The Basic Data Acquisition Module is an optional plug-in data acquisition module for PRAP while it is part of the regular ZAP package.

The Temperature Data Acquisition Module allows resonance spectra to be acquired as a function of temperature in a 'sawtooth' waveform. First a starting temperature is set, and the instrumentation is allowed to settle for the measurement delay time in seconds. A resonance spectrum is then acquired and stored in a PRAP compound document. The temperature is held for the specified soak time, and then ramped to the next temperature in the specified ramp time. The temperature at the end of the ramp is determined by incrementing or decrementing by the specified step size, and the delay and measurement sequence is repeated. When the next temperature exceeds the minimum or maximum temperature, the temperature in the sequence is 'aliased' around the limit so that no temperature is greater or less than the maximum or minimum, respectively. The number of resonance spectra acquired is determined by step size, maximum and minimum temperature, the percentage of sawtooth waveform cycles from the starting temperature to be performed, and the number of times the whole sequence is to be repeated.

As an example, a starting temperature of 25°C, a step size of 25°C, a maximum temperature of 100°C, a minimum temperature of -25°C, an initially increasing scan in temperature, and 100% of a cycle would produce resonance spectra at the following temperatures;

Spectrum

Temperature (°C)

1

25

2

50

3

75

4

100

5

75

6

50

7

25

8

0

9

-25

10

0

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