Wika CTD9300 Manual de usuario descargar pdf (Pagina 38)

9037926 03/2005

Temperature Dry Well Calibrators CTD 9300

3. Moduses and Functions

38 WIKA Operating Instructions CTD 9300 Rev. 1

This menu comprises the parameters for linearising the internal

reference thermometer.

The internal reference

thermometer is linearised in two

stages. First of all, using a basic

linearisation that is always

performed and thereafter using

an individual fine linearisation.

In this case, "t'" is the

temperature following the basic

linearisation.

t display = P0 + P1 * t' + P2 * t' ² + P3 * t' ³ + P4 * t' 4

Linearisation CTD 9300-650 CTD 9300-165

parameters

P0 0 0

P1 1 1

P2 0 0

P3 0 0

P4 0 0

Using these parameters, only the general basic linearisation is

enabled and fine linearisation is switched off. In the case of DKD

calibration of the temperature calibrators, the errors of

measurement of the reference are exactly determined and the

parameters P0 to P4 are set to the optimum.

Fine linearisation can be disabled by setting the switch to OFF.

This function simplifies the determination of new parameters Pn

for adjusting the reference, at an autuorised laboatory.

The user should not edit these settings.

3.1.3.1 Internal Reference

Fig. 23: Internal reference

parameter set

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 133 134

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Wika CTD9300 Manual de usuario Pagina 38