JUMO ATHf-SW User manual

Surface-mounting
Thermostats
Series ATH.-SW-..
B 60.3035.0
Operating Instructions
02.03/00408320
ATHf-SW-..
ATHs-SW-..

Please read these Operating Instructions before commissioning the instrument. Keep the
manual in a place which is accessible to all users at all times. Please assist us to improve
these operating instructions, where necessary. Your suggestions will be appreciated.
Phone [phone]
Fax [phone]
All necessary settings and possible adjustments inside the instrument are described in
these operating instructions. However, if any problems should still arise during commis-
sioning, you are asked not to carry out any unauthorized manipulations on the unit. You
could endanger your rights under the instrument warranty! Please contact the nearest
subsidiary or the head office in such a case.

Contents Page
1 Introduction ............................................................................... 5
1.1 Typographical conventions ...................................................................... 5
1.1.1 Warning signs .............................................................................................. 5
1.1.2 Note signs ................................................................................................... 5
1.2 Application ................................................................................................. 6
1.3 Marking ...................................................................................................... 6
1.4 Safety notes ............................................................................................... 6
2 Instrument identification .......................................................... 7
2.1 Nameplate .................................................................................................. 7
2.2 Type designation ....................................................................................... 7
3 Mounting .................................................................................... 8
3.1 Dimensions ................................................................................................ 8
3.2 Opening the housing ............................................................................... 10
3.3 Fixing the surface-mounting thermostat .............................................. 10
3.3.1 Code s (rigid stem) .................................................................................... 10
3.3.2 Code f (with capillary) ................................................................................ 10
3.4 Capillary / temperature probe / pocket ................................................. 10
3.4.1 General ...................................................................................................... 10
3.4.2 Approved probes and pockets ................................................................. 11
3.5 Permissible loading on pocket .............................................................. 13
3.5.1 Pockets U, US, UZ, UZS ........................................................................... 13
3.6 Mounting the probe ................................................................................. 17
4 Installation ............................................................................... 18
4.1 Regulations and notes ............................................................................ 18
4.2 Electrical connection .............................................................................. 19
4.2.1 Closing the housing .................................................................................. 21

Contents Page
5 Settings .................................................................................... 22
5.1 Setpoint / limit setting ............................................................................ 22
5.1.1 TW, STW (STB), STB ................................................................................. 22
5.2 Resetting the STB ................................................................................... 23
5.3 Self-monitoring ........................................................................................ 24
5.3.1 Response to a system fracture ................................................................. 24
5.3.2 Response to falling below the temperature limit ....................................... 24
5.4 Use of the STW (STB) as STB ................................................................. 24
6 Instrument description ........................................................... 25
6.1 Technical data ......................................................................................... 25

5
1 Introduction
1.1 Typographical conventions
1.1.1 Warning signs
1.1.2 Note signs
abc1Foonote
Footnotes are comments which refer to specific parts of the text. Footnotes
consist of two parts:
Marking in the text and the footnote text.
The text markings are arranged as continuous superscript numbers.
The footnot text (in smaller typeface) is placed at the bottom of the page and
starts with a superscript number.
✱Action
This symbol indicates that an action to be performed is described.
The individual steps are marked by this asterisk, e. g.
✱Open housing
VDanger
This symbol is used where there may be danger to personnel if the instruc-
tions are disregarded or not followed accurately.
ACaution
This symbol is used where there may be damage to equipment if the instruc-
tions are disregarded or not followed accurately.
HNote
This symbol is used to draw your special attention to a remark.
vReference
This symbol refers to additional information in other chapters or sections.

1 Introduction
6
1.2 Application
Surface-mounting thermostats ATH-SW series are approved as:
❏Temperature monitor (TW)
❏Safety temperature limiter (STB).
❏Safety temperature monitor STW (STB)
❏Type examination to:
- DIN 3440
- Pressure Equipment Directive 97/23/EC (all types, except ATH.-SW-2 and
ATH.-SW-22)
1.3 Marking
1.4 Safety notes
Physical and toxicological properties of the media which may escape in the
event of a system fracture:
ACutting through or kinking the capillary will result in permanent instrument
failure!
H
Surface-mounting twin thermostats ATH-SW series conform to VDE 0631.
End of scale
°C
Danger-
ous
reaction
Fire/explosion
hazard
Water
contami-
nation
Toxicologal data
Ignition
temp.
°C
Explosion
limit
% v/v
irritant danger
to
health
toxic
liquid-filled
≥+200°C < +200 no +280 1.2 — 7.5 yes yes 1) no
≥+200°C ≤+350 no +490 1.0 — 3.5 yes yes 1) no
gas-filled
≥+400°C ≤+500 no
H1) The filling liquid may escape in the event of a system fracture. At present
there is no restrictive statement from the health authorities concerning any
danger to health over short periods and at low concentrations, e.g. after a
fracture of the measuring system.

7
2 Instrument identification
2.1 Nameplate
(1) Type code (see type designation below),
part number, serial number
(2) Control range /limit value, contact rating, permissible ambient temperature,
enclosure protection
(3) Mark of conformity
2.2 Type designation
Type
designation
Types
(1)
(3)
(2)
Typ:
AC
A
V
IP 1K/min
System
I
°C
System
II
Tu
V T II
A
AC
ATH-SW-2
0 +100
10(2)
230 80
54
TW89201
TN
Geprüft
DIN
ATH . -SW /
ATH surface-mounting thermostat with microswitch
s with screw-in pocket attached to housing (rigid stem)
(pocket U or UZ)
f with capillary (pocket U)
-SW die-cast aluminium housing, dust-tight and
proof against water jets, IP65 enclosure
-20temperature monitor (TW) with changeover contact
-20 safety temperature monitor STW (STB),
with changeover contact
-70 safety temperature limiter (STB),
with break contact (n.c.) and lock-out
/au snap-action switch contact gold-plated
Single thermostatsTwinthermostats
ATH.-S W-2
ATH.-S W-20
ATH.-S W-70
ATH.-S W-22
ATH.-S W-220
ATH.-S W-270
ATH.-SW-2020
ATH.-SW-2070
ATH.-SW-7070

8
3 Mounting
3.1 Dimensions
ATHs-SW-..,
with pocket U
ATHs-SW-..,
with pocket UZS
hex
cable gland
M 20x1.5
80
ØD
S
G
25
100
100
cable gland
M 20x1.5
100
80
25
100
S
D
Ø 90
Ø91
Ø 30

9
3 Mounting
ATHf-SW-..,
with plain
cylindrical bulb
A,
no pocket
ATHf-SW-..,
with pocket U
cable gland
M 20x1.5
100
100 80
66
86
Ø 8
Ø 5
d
L
15
25
cable gland
M 20x1.5
hex
100
100 80
66
86
Ø 8
Ø 5
15
25
L1
G
D
S

3 Mounting
10
3.2 Opening the housing
Opening ✱Unscrew the 4 cover screws
✱Remove housing top
3.3 Fixing the surface-mounting thermostat
Nominal
position (NL)
to DIN 16 257, NL 0 — NL 90 (other NL on request)
3.3.1 Code s (rigid stem)
The housing spigot is secured by a fixing screw in the enlarged pocket open-
ing.
3.3.2 Code f (with capillary)
Fixing the ther-
mostat head
by 4 screws through base of housing,
capillary exit at side of housing
3.4 Capillary / temperature probe / pocket
3.4.1 General
VTake care that the seal is seated correctly!
ACutting through or kinking the capillary of the surface-mounting thermostats
will result in permanent instrument failure!
Minimum permissible bending radius of the capillary is 5 mm.
The temperature probe must be installed in JUMO pockets, otherwise the
approval of the surface-mounting thermostat becomes invalid.
HThe temperature probe must be completely immersed in the medium.
To ensure their overall response accuracy, the thermostats must only be used
in conjunction with the pockets supplied by the factory.
When used in air, a process connection without pocket must be chosen.

11
3 Mounting
3.4.2 Approved probes and pockets
AUUZ
Plain cylindrical bulb Screw-in pocket with
screw-in spigot Form A
to DIN 3852/2,
with fixing screw.
Screw-in pocket
with fixing screw and
extension
US UZS
Weld-in pocket
with fixing screw and clamp
Weld-in pocket
with fixing screw and
extension
L
_15
Ød
SW
ØD
G
L1
S
hex
27
S
ØD
Ø25
Ø8
Ø12
Ø30

3 Mounting
12
UO UZO
Screw-in pocket open at
end, with screw-in spigot
Form A to DIN 3852/2,
with fixing screw
For code s, above +150°C
probe temperature, screw-in
pocket open at end, with
screw-in spigot Form A to
DIN 3852/2, with fixing screw
and extension
QV
For code f,
thead at both ends, for
retrofitting on capillary.
Max. probe temperature
+200°C.
For code f,
sealing gland for
retrofitting on capillary.
Max. probe temperature
+200°C.

13
3 Mounting
3.5 Permissible loading on pocket
3.5.1 Pockets U, US, UZ, UZS
3.5.1.1 Steel pockets
Material Tube: St 35.8 I
Screw-in nipple up to 300°C: 9 SMnPb.28 K
Screw-in nipple up to 450°C: 16 Mo 3 (turned groove)
Weld-in nipple: 16 Mo 3 (no groove)
Loading
AThe values below refer to the maximum loading on the probe mounting con-
cerned. The maximum pressure that can be sealed depends on the installation
conditions and may therefore be lower.
Temperature
Tube diameter D
8 x 0.75 mm or taper 15 x 0.75 mm
Max. permissible pressure
100°C 89 bar 48 bar
150°C 83 bar 45 bar
200°C 78 bar 42 bar
300°C 59 bar 32 bar
350°C 50 bar 27 bar
400°C 46 bar 25 bar
450°C 24 bar 13 bar

3 Mounting
14
Permissible
flow velocity
Permissible flow velocity (m/sec) at maximum permissible pressure loading
and different immersion tube lengths S
Permissible flow velocity (m/sec) at maximum permissible pressure loading
and different immersion tube temperatures t.
Temperature: +200°C
Thermal medium: air ( 1 )
water, oil ( 2 )
Tube diameter D:
08mm
- - - - - - - - - - - - 10 mm
. . . . . . . . . . . . . .
15 mm



AThe values below refer to the maximum loading on the probe mounting con-
cerned. The maximum pressure that can be sealed depends on the installation
conditions and may therefore be lower.
Temperature: +200°C
Thermal medium: air ( 1 )
water, oil ( 2 )
Tube diameter D:
08mm
- - - - - - - - - - - - 10 mm
. . . . . . . . . . . . . .
15 mm




15
3 Mounting
3.5.1.2 Stainless steel pockets
Material
Permissible
flow velocity
on request
3.5.1.3 Brass pockets
Material
Permissible
flow velocity
on request
Tube and nipple: X 6 CrNiMoTl 17 122
Temperature Tube diameter D
8 x 0.75 mm or taper 15 x 0.75 mm
Maximum permissible pressure
100°C 92 bar 50 bar
150°C 88 bar 48 bar
200°C 83 bar 45 bar
300°C 72 bar 39 bar
400°C 67 bar 36 bar
Tube and nipple: CuZn
Temperature
Tube diameter D
8 x 0.75 mm 15 x 0.75 mm
Maximum permissible pressure
100°C 50 bar 27 bar
150°C 48 bar 26 bar

3 Mounting
16
3.5.1.4 Probe mountings A, UO, UZO, Q und V
(probe in direct contact with medium)
AThe process connections A, UO, UZO, Q and V may only be used in unpres-
surized media.
ATo ensure their overall accuracy, the thermostats may only be used together
with the pockets supplied by the factory.
Fitting several probes into a common pocket is only permitted with 2 or 3
cylindrical probes with 6 mm diameter and pockets 15 x 0.75 mm.
When fitting 2 probes into a common pocket, the factory-supplied spring clip
must be fitted inside the pocket.
With pockets U, US, UZ and UZS in the materials St 35.8I/16Mo 3, the permis-
sible operating life at operating temperatures above 420°C is limited to
200,000 hours. Please refer to the requirements of TRD 508 for application in
this range.

17
3 Mounting
3.6 Mounting the probe
HThe temperature probe ( 2 ) must be completely immersed in the medium,
otherwise there will be appreciable deviation from the switching point.
In the case of thermostats with capillary (code f), the temperature probe is
secured in the pocket by a clamp ( 1 ) with mountings U and US.
(1)
(2)

18
4 Installation
4.1 Regulations and notes
V❏The electrical connection must only be carried out by qualified personnel.
❏The choice of cable, the installation and the electrical connection must con-
form to the requirements of VDE 0100 “Regulations on the installation of
power circuits with nominal voltages below 1000 V” or the appropriate local
regulations.
❏Ensure that the instrument is completely isolated from the mains supply
before carrying out work where live components may be touched.
❏Earth the instrument at terminal PE to the protective earth. This cable must
have at least the same cross-section as the supply cable. Earthing cables
must be wired in star configuration, to a common earthing point which is
connected to the protective earth of the supply. Do not loop the earthing
cables, i.e. do not run them from one instrument to another.
❏Apart from faulty installation, incorrect settings on the thermostat may also
affect the proper functioning of the subsequent process or lead to damage.
Adjustment should therefore only be made by qualified personnel. Please
observe the corresponding safety regulations in this matter.

19
4 Installation
4.2 Electrical connection
Steps ✱Open housing. ➩Chapter 3.2 “Opening the housing”, page 10.
✱Pull off protective cover.
✱Pass the connecting cable (cable diameter 5 to 10 mm) through the cable
gland ( A ). Screw connection for up to 2.5 mm2cable cross-section.
✱Make the connection to the terminals ( 1, 2 and 4 ) according to the con-
nection diagram.
✱Connect protective earth conductor to the terminal PE .
✱Replace protective cover.
✱The reset button ( B ) on the STB must be free to move.
Connection
diagrams
Single thermostat
1
2
4
1
2
( A )
( B )
HConnection suitable for fixed wiring. Cable entry without fixed strain relief.
Type X attachment (without any special tools).
TW, STW (STB) with
changeover contact
STB with break contact
and lockout

4 Installation
20
Connection
diagrams
Twin thermostat
System I and II:
with changeover contact,
switching action: TW, STW
System
I:
with changeover contact,
switching action: TW, STW
System
II:
with break contact and
lockout,
switching action: STB
System I and II:
with break contact and lockout,
switching action: STB