ASL INTERCOM CTR5000, Руководство пользователя

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CTR5000 Operating Instructions
114 ASL operating instructions, model CTR5000
will be of special importance to metrology standards departments which need to
make precise measurements at ambient temperatures.
 The part of the ITS-90 scale which may be measured by PRTs extends from 83.8058
K (-189.3442
 C) to 961.78  C. The actual range of temperatures which may be
measured depends on the type and range of the PRT used.
The ITS-90 scale requires the entry of 6 constants into the CTR5000 before the instrument can
accurately convert resistance to temperature for a particular PRT.
The constants are conventionally called R
0.01
, Ap, Bp, Cp, Dp, An, Bn and W.