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Surface-mountingthermostats
Series ATH.-SE-..
B 60.3031.0Operating Instructions
03.02 / 00073788
H Please read these Operating Instructions before commissioning the instrument. Keep theoperating instructions in a place which is accessible to all users at all times. Please assistus to improve these operating instructions. Your suggestions will be welcome.
Phone +49 661 6003-0Fax +49 661 6003-607
H All necessary settings and, where appropriate, alterations inside the instrument aredescribed in these operating instructions. If, however, any difficulties should arise duringcommissioning, you are asked not to carry out any unauthorized manipulations on theunit. You could endanger your rights under the instrument warranty! Please contact thenearest subsidiary or the main factory in such a case.
Contents Page
1 Introduction ............................................................................... 5
1.1 Typographical conventions ...................................................................... 51.1.1 Warning signs .............................................................................................. 51.1.2 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 case .................................................................................... 10
3.3 Fixing the surface-mounting thermostat .............................................. 103.3.1 Code s (rigid stem) .................................................................................... 103.3.2 Code f (with capillary) ................................................................................ 10
3.4 Capillary / temperature probe / pocket ................................................. 113.4.1 General ...................................................................................................... 113.4.2 Permitted probes and protection tubes (pockets) .................................... 11
3.5 Permissible operating conditions at the pocket .................................. 123.5.1 Pockets U, US, UZ, UZS, ES and EZS ..................................................... 12
3.6 Mounting the probe ................................................................................. 14
4 Installation ............................................................................... 15
4.1 Regulations and notes ............................................................................ 15
4.2 Electrical connection .............................................................................. 164.2.1 Closing the case ....................................................................................... 17
Contents Page
5 Settings .................................................................................... 19
5.1 Setting the limit value ............................................................................. 19
5.2 Resetting the STB ................................................................................... 20
5.3 Self-monitoring ........................................................................................ 215.3.1 Response to a fracture of the measuring system ..................................... 215.3.2 Response to low temperature ................................................................... 21
5.4 Using the STW(STB) as STB ................................................................... 21
6 Instrument description ........................................................... 22
6.1 Technical data ......................................................................................... 22
5
1 Introduction
1.1 Typographical conventions
1.1.1 Warning signs
1.1.2 Note signs
abc1 Footnote
Footnotes are comments which refer to specific parts of the text. Footnotesconsist of two parts:
1) The marking in the text, arranged as continuous superscript numbers.
2) The footnote text, at the bottom of the page, in a smaller typeface than themain text, and preceded by a superscript number.
✱ Action
This symbol marks the description of a required action.
The individual steps are indicated by an asterisk, e.g.
✱ Select setpoint
V Danger
This symbol is used where there may be danger to personnel if the instruc-tions are disregarded or not followed accurately.
A Caution
This symbol is used where there may be damage to equipment if the instruc-tions are disregarded or not followed accurately.
H Note
This symbol is used to draw your special attention to a remark.
v Reference
This symbol refers to additional information in other chapters or sections.
1 Introduction
6
1.2 Application
Surface-mounting thermostats Series ATH.-SE-.. are approved for monitoringinstallations on steel-hulled ocean-going ships (e.g. steam and boiler plant,indirect heating systems) as:
❏ Temperature monitor (TW)
❏ Safety temperature monitor STW (STB)
❏ Safety temperature limiter (STB).
The models comply with DIN 3440 and are approved to the guidelines of theClassification Societies:
- Germanischer Lloyd
- Det Norske Veritas
- Bureau Veritas
- See-Berufsgenossensschaft
1.3 Marking
H Surface-mounting thermostats Type ATH.-SE-.. are approved to VDE 0631
1.4 Safety notes
Physical and toxicological properties of substances which may escape in the event of a system fracture:
A Cutting through or kinking the capillary of the surface-mounting thermostats Type ATH.-SE-.. will lead to permanent failure of the instrument!
H In the event of a fracture of the measuring system, the filling liquid can escape.At present there is no restrictive statement from the health authorities con-cerning any danger to health over short periods and at low concentrations,e.g. after fracture of the measuring system.
End of scale Dangerous reaction
Fire/explosion hazard Water contam-ination
Toxicological data
Ignition temperature
°C
Explosion limit
% v/v
irritant danger to health
toxic
below +200°C no +280°C 1.2 - 7.5 yes yes yes no+200°C to +350°C no +490°C 1.0 - 3.5 yes yes yes no
7
2 Instrument identification
2.1 Nameplate
(1) Type code (see type designation, below)
(2) Control range / contact rating
(3) Approval mark
2.2 Type designation
Type code
( 1 )
( 2 )
( 3 )
ATH . -SE - . .ATH surface-mounting thermostat with microswitch
s with screw-in pocket, attached to the case(pocket U or UZ)
f with capillary (pocket U)
-SE approved for use on ocean-going ships
-20 temperature monitor (TW) with changeover contact-20 safety temperature monitor STW (STB),
with changeover contact
-70 safety temperature limiter (STB),with n.c. (break) contact
8
3 Mounting
3.1 Dimensions
ATHs-SE-2, ATHs-SE-20 with pocket U(up to +150°C)
9
3 Mounting
ATHs-SE-2 (20) with pocket UZ(up to +300°C)
ATHf-SE-70, with pocket U(up to +300°C)
3 Mounting
10
3.2 Opening the case
Opening✱ Unscrew the two lead-sealable cheese-head screws ( 5 )
✱ Remove the upper part of the case ( 1 )
3.3 Fixing the surface-mounting thermostat
Operatingposition
unrestricted(for open-air mounting on request)
3.3.1 Code s (rigid stem)
The case boss is secured in the enlarged open end of the pocket by two fixing screws.
3.3.2 Code f (with capillary)
by ½" pipe thread on the case boss
( 1 )
( 5 ) ( 5 )
V Make sure that the gasket is seated correctly when reassembling!
11
3 Mounting
3.4 Capillary / temperature probe / pocket
3.4.1 General
3.4.2 Permitted probes and protection tubes (pockets)
Forms A, U and UZ
A Cutting through or kinking the capillary will lead to permanent failure of theinstrument!
Minimum permissible bending radius of the capillary is 5 mm.
The temperature probe must be fitted in a JUMO pocket, otherwise theapproval of the surface-mounting thermostat becomes invalid.
H The temperature probe must be immersed in the medium for its entire length.
In order to ensure the general accuracy of response, the instruments must onlybe used with the pockets supplied from the factory (diameter D = 8, 10 mm).
Only probes with a diameter d = 8 mm may be fitted in pockets with a diame-ter D = 10 mm.
When the operating medium is air, probe Form A (without pocket) must beselected.
A U UZPlain cylindrical bulb Screw-in pocket with
threaded boss Form A to DIN 3852/2,with fixing screw
Screw-in pocket with fixing screw andextension
L
_15
Ød
½" pipe
hex.
3 Mounting
12
3.5 Permissible operating conditions at the pocket
3.5.1 Pockets U, US, UZ, UZS, ES and EZS
3.5.1.1 Steel protection tube
Materials Tube: St 35.8 IScrew-in nipple to 300°C: 9 SMnPb.28 KScrew-in nipple to 450°C: 16 Mo 3 (with turned groove)Weld-in nipple: 16 Mo 3 (without turned groove)
Loading
Permitted flow velocities
Permissible flow velocity “v” at maximum permitted pressure loading and vari-ous immersion tube lengths S
A The following values refer to the maximum loading of the probe mounting con-cerned. The maximum pressure which can be sealed depends on the mount-ing conditions and may possibly be lower.
Temperature Tube diameter
8 x 0.75 mm or conical 10 x 0.75 mm
Max. permissible pressure Max. permissible pressure
100°C 89 bar 72 bar
150°C 83 bar 67 bar
200°C 78 bar 63 bar
300°C 59 bar 47 bar
350°C 50 bar 40 bar
Temperature: +200°C
Therm. medium:Air (1)Water, oil (2)
Tube diameter D: 08 mm10 mm
13
3 Mounting
Permissible flow velocity “v” at maximum permitted pressure loading and vari-ous immersion tube temperatures “t”
3.5.1.2 Stainless steel pocket
Material
Permissible flow velocities
on request
A The following values refer to the maximum loading of the probe mounting con-cerned. The maximum pressure which can be sealed depends on the moun-ting conditions and may possibly be lower.
Material: ST35.8 �Immersion tube length “s” 200 mm
Therm. medium:Air (1)Water, oil (2)
Tube diameter D: 08 mm10 mm
Tube and nipple material: X 6 CrNiMoTl 17 122
Temperature Tube diameter
8 x 0.75 mm or conical 10 x 0.75 mm
Max. permissible pressure Max. permissible pressure
100°C 92 bar 74 bar
150°C 88 bar 71 bar
200°C 83 bar 67 bar
300°C 72 bar 58 bar
350°C 70 bar 56 bar
3 Mounting
14
3.5.1.3 Pocket U in brass
Permitted flow velocities
on request
The plain cylindrical bulb, Form A must only be used in pressure-free media.
3.6 Mounting the probe
Pocket U tube and nipple material: brass
Temperature Tube diameter
8 x 0.75 mm 10 x 0.75 mm
Max. permissible pressure Max. permissible pressure
100°C 50 bar 40 bar
150°C 48 bar 39 bar
A Because of the general accuracy of response, the instrument must only beused with the pockets supplied from the factory.
H The temperature probe (2) must be immersed in the medium for its entirelength, otherwise there will be appreciable switching point errors.
With probe forms U and US, thetemperature probe is secured in thepocket by the clip (1).
On thermostats with capillary (codef), with probe forms U and US, thetemperature probe is secured in thepocket by the clip (1).
(1)
(2)
15
4 Installation
4.1 Regulations and notes
V ❏ The electrical connection must only be made by qualified personnel.
❏ The choice of cable, the installation and the electrical connection mustconform to the requirements of VDE 0100 “Regulations for the installation of power circuits with nominal voltages below 1000 V”, or the appropriate local regulations.
❏ If contact with live parts is possible while working on the unit, it must be completely disconnected from the supply.
❏ Earth the instrument at the PE terminal to the protective conductor. This cable must have a cross-section that is at least as large as the supply cables. Earth cables must be run in a star configuration to a common earth point which is connected to the protective earth of the supply. Do not loop earth cables, i.e. do not run them from one instrument to another.
❏ Apart from faulty installation, incorrect settings on the thermostat can affect the proper functioning of the following process or lead to damage. Setting up must therefore be restricted to qualified personnel. Please observe the appropriate safety regulations in this respect.
4 Installation
16
4.2 Electrical connection
✱ Open the case.➩ Section 3.2 “Opening the case”, page 10.
✱ Pass the connection cable (cable diameter 10 — 16,5 mm) through the compression gland (1). Fitting type"X" (no special tools), screw connection up to 2.5 mm2 conductor cross-section.
✱ Take off the protective cover ( 4 ).
✱ Make the connection to the terminals ( 1 ) in accordance with the appropri-ate connection diagram.
✱ Connect the protective conductor to terminal PE ( 2 ).
✱ Put protective cover ( 4 ) back on and snap it onto the guide lug ( 5 ).
( 4 )
( 5 )
17
4 Installation
Connectiondiagrams
4.2.1 Closing the case
✱ Make sure that the plastic gasket in the lower part of the case ( 2 ) is seatedcorrectly.
✱ Place the upper part of the case ( 1 ) onto the lower part ( 2 ).
✱ Tighten the lead-sealable cheese-head screws ( 5 ).
TW / STW (STB) STB as break contactwith signal contact
STBwith (n.c) break contact
H On thermostats with code -70, the external reset button ( 3 ) must be locatedprecisely on top of the internal reset button ( 4 ) for the microswitch, since thisis the only way the reset button ( 3 ) can be operated from the outside.
H
( 1 )
( 2 )
( 3 )
( 4 )( 5 )
( 5 )
4 Installation
18
Connecting the cable
✱ Turn the compression gland ( 1 ) clockwise until the cable entry is sealedand the cable is secured against pulling out. The cable has to be protectedagainst vibration overload by leaving sufficient extra cable length ( 2 ).
✱ Close the case.
19
5 Settings
5.1 Setting the limit value
✱ Open the case.➩ Section 3.2 “Opening the case”, page 10.
✱ Set the limit value on the setpoint marker ( 5 ) using a screwdriver.
( 1 ) upper stop
( 2 ) lower stop
( 3 ) setpoint marker
( 4 ) scale division
( 5 ) setpoint spindle
5 Settings
20
5.2 Resetting the STB
After the temperature has fallen below the set limit (safe temperature limit) byabout 10% of span, the microswitch can be reset.
✱ Screw off the cap nut (1).
✱ Press the reset button (2) until the microswitch is reset.
✱ Screw the cap nut (1) back on.
21
5 Settings
5.3 Self-monitoring
5.3.1 Response to a fracture of the measuring system
5.3.2 Response to low temperature
5.4 Using the STW(STB) as STB
H On the STB and STW (STB), the circuit stays open permanently in the event ofa fracture of the measuring system (leakage).
On the STB, the microswitch is additionally locked out.
H If the probe temperature falls below the minimum value of -10°C, the circuit isopened.
After the minimum probe temperature is exceeded, the STB must be manuallyreset.➩ Section 5.2 “Resetting the STB”, page 20.
The TW and STW reset themselves automatically.
V The lock-out facility to DIN 3440 must be ensured by the susequent circuit. This circuit must be in accordance with Section 8.7 of DIN VDE 0116.
22
6 Instrument description
6.1 Technical data
Permissibleambienttemperaturein operation
Permissiblestoragetemperature
maximum +50°C, minimum -50°C
Case Cover: polycarbonate with screws for lead sealing
Base: die-cast aluminium, painted
Connection cable
Diameter 10 — 16,5 mm, maximum conductor cross-section 2.5 mm2
Switchingdifferentialin % oflimit valuerange span
Current rating
Fusingrequired
see current rating
Protection IP54 to EN 60 529, operation under normal conditions
Operatingmedium
Water, oil, air, superheated steam
Time constantst0.632
Capillary Thermostat head
for end of scale
maximum +80°C +80°C
minimum-40°C -40°C below +200°C
-20°C -20°C +200°C to +350°C
Codeonly on types 2 and 20
nominal value possible actual value
S 1S 2S 3
36
1.5
3 - 66 - 111 - 3
TW, STW (STB) with switching differentials 3% and 6%
230 V, 10 (2) A AC, p.f. = 1 (0.6) 230 V, 0.25 A DC
TW, STW (STB) with switching differential 1.5%
230 V, 6 (1.2) A AC, p.f. = 1 (0.6) 230 V, 0.15 A DC
in water in oil in air / superheated steam
45 sec max. 60 sec max. 120 sec max.
23
6 Instrument description
Mode ofoperation
according to EN 60 730-1
TW: Type 2BL = automatic operation with microswitch disconnection in operation, which requires no auxiliary energy source.
STB, STW (STB): Type 2BK = automatic operation with microswitch disconnection in operation, with fail-safe facility.
Operatingposition
unrestricted (with open-air mounting on request)
Weight approx. 0.65 kg
Capillary and probe
Materials
Minimumbending radius
5 mm
End of scale Capillary Probe
up to +200°C copper Mat. Ref. 2.0090tin-plated1.5 mm dia.
copper Mat. Ref. 2.0090tin-platedbrazed
up to +300°C copper Mat. Ref. 2.0090tin-plated1.5 mm dia.
stainless steelMat. Ref. 1.4571brazed
up to +500°C stainless steelMat. Ref. 1.45711.5 mm dia.
stainless steelMat. Ref. 1.4571welded
6 Instrument description
24
Switching point accuracy
(in % of scale span;referred to the setpoint or limit value at +22°C ambient temperature)
TW in upper third of scale ± 1.5%at start of scale ± 1.5%
STB, STW (STB) in upper third of scale
at start of scale
Mean ambient temperature error
(in % of scale span) referred to the limit value
There is a displacement of the switching point if the ambient temperature at the thermostat head and/or the capillary deviates from the +22°C calibration ambient temperature.higher ambient temperature = lower switching pointlower ambient temperature = higher switching point
+0-5 %
+0-10 %
for temperatures with end of scale:
below +200°C +200°C to +350°C
TW STB/STW (STB) TW STB/STW (STB)
due to thermostat head, % per °C
0.08 0.17 0.06 0.13
due to capillary, % per °C per m length
0.047 0.054 0.09 0.11
M. K. JUCHHEIM GmbH & CoStreet address:Moltkestraße 13 - 3136039 Fulda, GermanyDelivery address:Mackenrodtstraße 1436039 Fulda, GermanyPostal address:36035 Fulda, GermanyPhone: +49 661 6003-0Fax: +49 661 6003-607E-mail: [email protected]: www.jumo.net
JUMO Instrument Co. Ltd.JUMO HouseTemple Bank, RiverwayHarlow, Essex CM20 2TT, UK
Phone: +44 12 79 63 55 33Fax: +44 12 79 63 52 62E-mail: [email protected]
JUMO PROCESS CONTROL INC.885 Fox Chase, Suite 103Coatesville, PA 19320, USAPhone: 610-380-8002
1-800-554-JUMOFax: 610-380-8009E-mail: [email protected]: www.JumoUSA.com
