Resetting The Stb; Self-Monitoring; Behaviour In The Event Of A Measuring System Breakage; Response To Low Temperature - JUMO ATH.-SE Series Operating Manual

5.2

Resetting the STB

Action
5.3

Self-monitoring

5.3.1 Behaviour in the event of a measuring system breakage

H
On the STB and STW (STB), the circuit stays open permanently in the event of
a measuring system breakage (leakage).
On the STB, the microswitch is additionally locked.

5.3.2 Response to low temperature

H
The electrical circuit opens when cooling the probe of STW (STB) and STB
down to the negative temperature range, but it then closes again if the temper-
ature rises. The STB must be unlocked manually if the minimum probe temper-
ature is exceeded.
The STW (STB) unlocks itself automatically.
5.4

Using the STW(STB) as STB

V
After the temperature has fallen below the set limit value (safe temperature
limit) by about 10% of the scale range, the microswitch can be reset.
1.
✱ Unscrew the cap nut
(1).
The restart lock as per DIN EN 14597 must be ensured by the subsequent cir-
cuit. This circuit must be in accordance with VDE 0116.
2.
✱ Press the reset but-
ton (2) until the micro
switch is reset.
5 Settings
3.
✱ Screw the cap nut (1)
back on
19