User manual
EN Operating manual – temperature measuring device XP100 / XP101 11
11_2014
Explanations regarding ITS-90:
Calculation of the deviation to the reference function W:
W corresponds to the sensor's current resistance divided by the sensor's
resistance at the water triple point (0.01°C).
a1) If W < 1 and cL1 = 0 (for the range from -190°C to 0.01°C):
In that event the parameter cL1 is bracketed in the selection: (cL1)
∆W = aL[W - 1] + bL[W - 1] ln W
Default setting:
aL = 0; bL = 0; cL1 = 0
a2) If W < 1 and cL1 ≠ 0 (for the range from -219°C to 0.01°C):
In that event the parameter cL1 is displayed as usual in the selection: cL1
∆W = aL[W - 1] + bL[W - 1]
2
+ cL1[ln W ]
2
b) If W >= 1
∆W = aH[W - 1] + bH[W - 1]
2
+ cH[W - 1]
3
+ dH[W - W Al)]
2
Default setting:
aH = 0; aH = 0; cH = 0; dH = 0; W-Al = 3.3760086
Measuring mode screen
A.
B.
40
42
43
44 45 46 47
41
40 Indicates the current temperature value.
41 Displays information on the current measuring mode and the character-
istic curve.
42 This symbol indicates, that the displayed measured values under 43 are
calculated (e.g. minimum/maximum measured value).
43 Indicates the calculated measured values according to the selection
(e.g. minimum/maximum measured value).
44 Sets the measured values displayed under 43 and the duration back to
zero.
45 Specifies how the measured values under 43 are shown (see fig.
B.):
Minimum: Always shows the smallest detected measured value
from a measuring period.
Maximum: Always shows the largest detected measured value
from a measuring period.
Average: Shows the average value of all measured values which
have been detected so far from a measuring period.
Hold: Pauses the current detected measured value and
shows it continually (when this option is selected).
Off: Switches the display (42) off.
46 Carries out an automatic measurement for the duration of an already
specified recording interval. The recording interval can be specified in
the following screen (see fig. C. and fig. D.).
47 Saves the currently displayed measured value as single measurement
in the archive with date and time stamp.