JUMO ATH.-SE Series Operating Manual page 21

Operating
mode
Operating position
Weight
Capillary and
probe materials
Minimum
bending radius
Switching point
accuracy
Mean ambient
temperature
influence
as per EN 60 730-1
TW: Type 2BL = automatic mode
STB, STW (STB): Type 2BK = automatic mode
unrestricted (with open-air mounting on request)
approx. 0.65 kg
End of scale Capillary
up to +200 °C copper Mat. Ref. 2.0090
tin-plated, 1.5 mm dia.
up to +300 °C copper Mat. Ref. 2.0090
tin-plated, 1.5 mm dia.
up to +500 °C stainless steel,
1.5 mm dia.
5 mm
(in % of scale range;
in relation to the set point or limit value at +22 °C ambient temperature)
TW in upper third of scale
at start of scale
STB, STW (STB) in upper third of scale
at start of scale
(in % of scale range) in relation to the limit value
There is a displacement of the switching point if the ambient temperature at
the thermostat head and/or the capillary deviates from the +22 °C calibration
ambient temperature.
higher ambient temperature = lower switching point
lower ambient temperature = higher switching point
below +200 °C
TW
influence on thermostat head, % per °C
0.08
influence on capillary, % per °C per m length
0.047
6 Instrument description
with microswitch disconnection in operation,
which requires no auxiliary energy source.
with microswitch disconnection in operation,
with fail-safe facility.
for temperatures with end of scale:
STB/STW (STB)
0.17
0.054
Probe
copper Mat. Ref. 2.0090
tin-plated, brazed
stainless steel
Mat. Ref. 1.4571, brazed
stainless steel
Mat. Ref. 1.4571, welded
±
1.5%
±
1.5%
+0
%
-5
+0
%
-10
+200 °C to +300 °C
TW STB/STW (STB)
0.06 0.13
0.09 0.11
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