JUMO 60.5051 Explosion-protected surface-mounting thermostat, ATH-EXx Operating Manual - Manual (Page 23)

23
6 Instrument description
Switching point
accuracy in % of scale span, referred to the limit value at T
a
+22°C.
Mean ambient
temperature
effect in % of scale span, referred to the limit value.
A deviation of the ambient temperature at the thermostat head and/or the cap-
illary from the +22°C calibration ambient temperature produces a shift in the
switching point:
higher ambient temperature = lower switching point
lower ambient temperature = higher switching point
TW, TB
in upper third of scale
+0
%
-4
at start of scale
+0
%
-6
STW, STB
in upper third of scale
+0
%
-5
at start of scale
+0
%
-7
Surface-mounting thermostats with end of scale
< +200°C
 +200°C  +350°C
> 350°C
TW
TB
STW
STB
TW
TB
STW
STB
TW
TB
STW
STB
effect due to the thermostat head, % per °C
0.08%/K 0.17%/K 0.06%/K 0.13%/K 0.14%/K 0.12%/K
effect due to capillary, % per °C per meter
0.047%/K 0.054%/K 0.09%/K 0.11%/K 0.04%/K 0.03%/K