H
Please read these operating instructions before placing the
instrument in service. Keep the manual in a place which is accessible
to all users at all times. Please assist us in improving these operating
instructions where necessary. Your comments will be appreciated.
Tel49 661 6003-716
Fax
+49 661 6003-504
H
All necessary settings and manual changes within the device (if
required) are described in these operating instructions. If any
difficulties should nevertheless arise during startup, please do not
manipulate the unit in any way. By doing so, you could endanger
your rights under the instrument warranty! Please contact the
nearest subsidiary or the head office in such a case.
H
The instruments are maintenance-free. In the event of malfunction,
please return the instrument to the supplier with precise details of
the fault. The staff at our field offices, branches, and agencies are
always available to provide service and advice.
JUMO GmbH & Co. KG
Company address: Moritz-Juchheim-Strasse 1
36039 Fulda, Germany
Delivery address:
Mackenrodtstrasse 14
36039 Fulda, Germany
Postal address:
36035 Fulda, Germany
Phone:
+49 661 6003-716
Fax:
+49 661 6003-504
E-mail:
Internet:
www.jumo.net
JUMO Mess- und Regelgeräte Ges.m.b.H.
Pfarrgasse 48, 1232 Vienna, Austria
Phone:
+43 1 610610
Fax:
+43 1 6106140
E-mail:
Internet:
www.jumo.at
JUMO Mess- und Regeltechnik AG
Laubisrütistrasse 70, 8712 Stäfa, Switzerland
Phone:
+41 1 928 24 44
Fax:
+41 1 928 24 48
E-mail:
Internet:
www.jumo.ch
1. Introduction / Application
ETH series fitted thermostats are approved as:
■
safety temperature limiters (STB).
■
safety temperature monitors STW (STB)
■
Type examination to:
- DIN EN 14597
- Pressure Equipment Directive 97/23/EC
Safety instructions
Physical and toxicological properties of substances which may escape,
should the system fracture:
H
Fitted thermostats of type series ETH comply with VDE 0631.
End of scale
Danger-
ous
reac-
tions
Fire/
explosion hazard
Water
contami
nation
Toxicology
Ignition
tempera-
ture
°C
Explosion
limit
% v/v
irri-
tant
danger
to health
toxic
liquid-filled
≥
+200°C
< +200 °C
no
+355 °C
0.6 - 8
yes
yes
1
no
≥
+200 °C
≤
+350 °C
no
+490 °C
- -
yes
yes
1
no
gas-filled
≥
+400 °C
≤
+500 °C
no
H
1
Should the measuring system fracture, the fill fluid may escape. At
present, there is no restrictive statement from the health authorities
concerning danger to health in the event of short-term exposure at low
concentration, for example, should the measuring system fracture.
2. Instrument identification / type
declaration
Type designation
Nameplate
(reference example)
( 1 ) Type
( 2 ) Order code
( 3 ) Limit value/max. housing
temperature/contact rating
( 4 ) Manufacturing number/
sales number
( 5 ) Mark of approval/
connection diagram
( 6 ) Year of manufacture
( 7 ) Week of manufacture
ETH . - . .
/
ETH
Fitted thermostat with microswitch
with capillary
-20
safety temperature monitor STW (STB),
with changeover contact
-70
Safety temperature limiter (STB)
with break contact and restart lockout
/au
gold-plated snap-action switch contact
/U
only with STB. microswitch with normally-closed
contact, restart lockout, and
additional signal contact
B 60.2010.0
Operating Manual
2009-03-06/
00073781
3.
Mounting / general information
Capillary / temperature probe / pocket
General information
■
If the capillary of the surface-mounting thermostat is cut through or becomes
kinked, this could result in permanent device failure!
■
The minimum bending radius allowed for the capillary is 5 mm.
■
JUMO pockets must be used when installing the temperature probe, if the approval
for the surface-mounting thermostat is to remain valid.
■
The temperature probe must be fully immersed in the measurement medium.
■
When air is the measurement medium, you must choose a process connection
without a pocket.
■
To ensure the general accuracy of the operating value, the instruments must only
be used with the pockets supplied on delivery (diameter D = 8, 10 mm).
■
Only a probe of diameter d = 8 mm may be used in pockets of D = 10 mm.
■
Multiple assignments of pockets are only allowed with 2 or 3 cylindrical probes of
Ø 6 mm and pockets of 15 x 0.75 mm.
■
If two probes are assigned, the spring clip provided on delivery must be installed in
the pocket.
■
With pockets U, US, E, ES, and EZS made from St 35.8I/16Mo 3 materials, the
permitted operating period at operating temperatures above 420 °C is limited to
200,000 hours. Compliance with TRD 508 is essential for applications in this range.
Mounting the thermostat head
Any installation position
Mount the thermostat head
On the chassis with 2 M3 screws
( 1 ) screw
( 2 ) panel
( 1 )
( 2 )
4.
Dimensions
Panel cut-out
Dimensions
ETHf-20
ETHf-70
Fitted thermostat
Type series ETH
ETH-20
ETH-70
Approved probes and pockets
A
U
UO
US
ES
Plain cylindrical probe
Screw-in pocket with screw-in
spigot Form A to DIN 3852/2.
With fixing screw
Pocket as screw-in pocket, with
screw-in spigot Form "A" to
DIN 3852/2, with fixing screw
Weld-in pocket
with fixing screw and clamp
For code "f" pocket as weld-in pocket, with
welding shoulder; pocket secured with union nut,
connection "C".
E
B
C
D
Q
V
( A ) = washer / ( B ) = seal
For code "f" pocket as screw-in
pocket, with screw-in spigot
Form A to DIN 3852/2; pocket
secured with union nut, probe
mounting "C"
Probe mounting "C"
with loose coupling, threaded at
both ends
Plain cylindrical probe with
shoulder and union nut. Shoulder
brazed or welded to capillary
Plain cylindrical probe, threaded
connector brazed or welded to
capillary
For code "f" double threaded
coupling for subsequent capillary
mounting. Probe temperature
max. +200 °C
For code "f" clamping gland for
subsequent capillary mounting.
Probe temperature max. +200 °C
SW
ØD
G
L1
S