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1 Introduction
1.2
Application
Panel-mounting thermostats in the KM series are suitable for monitoring heat
generators, boilers, heat exchangers and pumps in HVAC engineering.
A
Cutting through or kinking the capillary of the KM series panel-mounting ther-
mostat will lead to permanent instrument failure!
1.3
Marking
H
Version to DIN 3440:
STB = protection temperature limiter
Panel-mounting thermostats in the KM series comply with VDE 0631.
Type examination to:
H
- DIN 3440
- Pressure Equipment Directive 97/23/EC
- DVGW Gas Appliances Directive 90/396/EEC
1.4
Safety notes
H
Filling liquid may escape in the event of a system fracture.
Physical and toxicological properties of the substances that may leak in the
event of a system fracture:
Control range
with
end of scale
°C
≥ +200°C
< +200
≥ +200°C ≤ +350
1
6
Danger-
Fire/explosion
ous
hazard
reactions
Ignition
temp.
°C
no
+355
no
+490
At present there is no restrictive statement from the health authorities
concerning any danger to health over short periods and at low
concentration, e.g. after a fracture of the measuring system.
Water
contami-
nation
Explosion
limit
% v/v
0.6 — 0.8
yes
- -
yes
Toxicological data
irritant danger to
toxic
health
yes
1
yes
1
no
no
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