Limit Value Setting; Self-Monitoring Of The Stb And Stw (Stb); Use Of The Stw (Stb) As Stb - JUMO EM Series Operating Instructions Manual

5.2

Limit value setting

EM-20-E ( 1 ) Set point value setter
( 2 ) Scale subdivision
( 3 ) Set point value indicator
Adjust the set point value setter via the inter-
nal scale using a screwdriver
EM-30-E The limit value is permanently factory set and sealed. Readjustment is not
EM-80 admissible.
5.3

Self-monitoring of the STB and STW (STB)

H
If the measuring system is destroyed, i.e. if the expansion fluid emerges, the
pressure in the diaphragm drops and permanently opens the current circuit.
Unlocking is no longer possible.
If the probe has cooled down to a temperature below approx. -20 °C, the cur-
rent circuit is also opened, however, automatically closes again, when the tem-
perature rises above -10 °C.
5.4

Use of the STW (STB) as STB

V
The restart lock required as per DIN EN 14597 must be ensured by the follow-
ing switching diagram. This switching diagram must comply with VDE 0116.
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°C
5 Settings
(1)
(2)
(3)
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