JUMO 60.5051 User Manual

ATH-EXx

Explosion-protected surface-mounted thermostat

for potentially explosive gas atmosphere Zone 1 and

potentially explosive dust atmosphere Zone 21

B 605051.0

Operating Instructions

2011-04-01/00379556

Please read these Operating Instructions before commissioning the instrument.
Keep the manual in a place that 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, where appropriate, alterations inside the instrument
are described in these operating instructions. If any difficulties should still arise
during commissioning, 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

Seite

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 Ex marking ................................................................................................. 6

1.4 Safety notes ............................................................................................... 6

2 Instrument identification .......................................................... 7

2.1 Nameplate .................................................................................................. 7

2.2 Type designation ....................................................................................... 8

3 Mounting .................................................................................... 9

3.1 Dimensions ................................................................................................ 9

3.2 Opening the surface-mounting thermostat .......................................... 10

3.3 Fixing the surface-mounting thermostat .............................................. 10

3.4 Capillary / temperature probe / pocket ................................................. 10

3.4.1 General ...................................................................................................... 10

3.4.2 Approved probes and sheaths .................................................................. 10

3.5 Permissible operating conditions at the pocket .................................. 11

3.5.1 Probe mountings 20 and 22 ...................................................................... 11

3.5.2 Probe mountings 10, 15, 21, 60, 65 .......................................................... 14

3.6 Mounting the probe ................................................................................. 14

4 Installation ............................................................................... 15

4.1 Regulations and notes ............................................................................ 15

4.2 Electrical connection .............................................................................. 16

4.3 Connection diagrams ............................................................................. 16

5 Settings .................................................................................... 17

5.1 Limit setting ............................................................................................. 17

5.1.1 TW, STW, TB (code 7) ............................................................................... 17

5.1.2 STB (code 70) ........................................................................................... 17

5.1.3 TB, STB (code 7-F or 70-F) ....................................................................... 18

5.2 Resetting the TB or STB limiter ............................................................. 19

5.3 Self-monitoring (fail-safe) ....................................................................... 19

5.3.1 Response to a fracture of the measuring system ..................................... 19

5.3.2 Response to low temperature ................................................................... 19

6 Instrument description ........................................................... 20

6.1 Technical data ......................................................................................... 20

7 Appendix .................................................................................. 24

1.1 Typographical conventions

1.1.1 Warning signs

Danger

This symbol is used when there may be danger to personnel if the instruc­tions are ignored or not followed correctly!

Caution

This symbol is used when there may be damage to equipment if the instruc-
tions are ignored or not followed correctly!

1.1.2 Note signs

Note
This symbol is used when your special attention is drawn to a remark.

1 Introduction

Reference
This symbol refers to further information in other chapters or sections.

1

abc

✱ Action

Footnote

Footnotes are remarks that refer to specific points in the text. Footnotes
consist of two parts:

A marker in the text, and the footnote text.
The markers in the text are arranged as continuous superscript numbers.
The footnote text (in smaller typeface) is placed at the bottom of the page and

starts with a superscript number.

This symbol indicates that an action to be performed is described.
The individual steps are marked by this asterisk, e.g.
✱ Select setpoint

5

1 Introduction

1.2 Application

Depending on the version, the explosion-protected surface-mounting
thermostat type ATH-EXx can be used as a

■ TW temperature monitor

■ TB temperature limiter

■ STW fail-safe temperature monitor

■ STB break-proof protection temperature limiter

in areas with an explosion hazard caused by gases, vapors or mists, Zone 1 or
in areas with combustible dust or dust/air mixtures, Zone 21.

If this surface-mounting thermostat is used inside the hazardous area, the
relevant regulations for mounting and operating equipment in such an area
must be observed.

Cutting through or kinking the capillary of the surface-mounting thermostat,
type ATH-EXx, will result in permanent failure of the instrument!

Only use the ATH-EXx with TZ 679 in areas that are classified as areas with
low mechanical risk.

1.3 Ex marking

II 2G Ex ed IIC T5 bzw. T6

for potentially explosive gas atmospheres

II 2D Ex tD A21 IP65 T95°C bzw.T80°C

for potentially explosive dust atmospheres

Test certificate: PTB 03 ATEX 1187

CE marking and No. of notified body: CE 0044.

1.4 Safety notes

Filling liquid may escape in the event of a measuring system fracture. 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.

Physical and toxicological properties of the substances that may escape in the
event of a system fracture.

End of scale°CDanger-

ous

reaction

< +200°C – +355°C 0,6 - 8 V X X X –

 +200°C

 +350°C

> 350°C

 +500°C

– +490°C - - X X X –

– – – ––––

Ignition

Fire and

explosion hazard

Explosion

temp.

°C

% v/v

limit

Water

conta-

mination

Toxicological data

irritant danger to

health

– = no; X = yes

toxic

6

2.1 Nameplate

( 4 )

( 3 )

( 2 )

( 1 )

( 5 )

( 6 )

( 8 )

( 9 )

(10)

(11)

( 7 )

( 12 )

( 1 ) Type ➩ Chapter 2.2 "Type designation", page 8
( 2 ) Type code
( 3 ) Control range or limit value range / ambient temperature at which this

( 4 ) Ex-protection marking
( 5 ) Testing laboratory / certification

2 Instrument identification

thermostat was calibrated (option)

( 6 ) Switching capacity
( 7 ) Permissible ambient temperature
( 8 ) Serial number
( 9 ) Year of production
(10) Week of production
(11) Running serial device number
(12) Extra code

7

2 Instrument identification

2.2 Type designation

ATH-EXx- . .- .
ATH Surface-mounting thermostat (with capillary)

ATH-EXx Marking for explosion-protected version
ATH-EXx- ..-. Code number for the function:

2=0Temperature monitor (TW)

with changeover contact.
Limit adjustable within the housing.

7=0Temperature limiter (TB)

with changeover contact and restart lock-out.
Limit adjustable within the housing.

7-F =0Temperature limiter (TB)

with changeover contact and restart lock-out.
Limit is factory-set.

20 =0Fail-safe temperature monitor (STW)

with changeover contact.
Limit adjustable within the housing.

70 =0Break-proof protection temperature limiter (STB)

with change-over contact and restart inhibit.
The limit value can be set by the installing engineer–
before commissioning the plant – within the housing.

70-F =0Break-proof protection temperature limiter (STB)

with change-over contact and restart inhibit.
Limit value set to a fixed value at the factory.

ATH-EXx- . .- .F=0Designation for factory-set limit setting.

Extra code (TZ) 679: Min. operating temperature: -50°C

8

3.1 Dimensions

90

d

122

120

82

6.4

10.4

106

L

29

25

( 1 )

( 2 )

( 1.1 )

( 1.2 )

( 7 )

( 5 )

( 6 )

( 4 )

( 3 )

3 Mounting

(1) Ex cable gland M 20 x 1.5 x 6-12
(1.1) Screw-in thread Tightening torque: 3,75 Nm
(1.2) Compression screw Tightening torque: for cable dia. 06mm=3.5Nm

(2) Cover screws
(3) Cover
(4) Housing base
(5) Drilling diagram
(6) Ex cable gland for sealing the capillary exit
(7) Temperature probe

Tightening torque: for cable dia. 12 mm = 2.5 Nm

9

3 Mounting

3.2 Opening the surface-mounting thermostat

✱ Unscrew the 4 cover screws (2)
✱ Remove cover (3) with seal (not visible)

Make sure that the seal is seated correctly when reassembling!

3.3 Fixing the surface-mounting thermostat

Mounting
position

To DIN 16257, NL 0 — NL 90 (other NL on request)

✱ Drill fixing holes according to the drilling diagram.
✱ Use the 4 screws to secure the housing base.

3.4 Capillary / temperature probe / pocket

3.4.1 General

Cutting through or kinking the capillary of the surface-mounting thermostat will
lead to permanent instrument failure!

Minimum permissible bending radius of the capillary is 5 mm.
The temperature probe must be mounted in a JUMO pocket, otherwise the

approval of the surface-mounting thermostat becomes invalid.

The temperature probe must completely immersed in the medium to be
measured.

To ensure their overall accuracy, the thermostats must only be used together
with the pockets supplied by the factory (diameter D = 8, 10 or 15 mm).

Pockets with a diameter D = 10 mm must only be fitted with probes with
diameter d = 8 mm.

Fitting several probes into a common pocket is only permitted with 2 or 3
probes (mounting type "10", diameter d = 6 mm) and 15 x 0.75 mm pockets.
When fitting 2 probes in a common pocket, the factory-supplied spring clip
must be fitted in the pocket.

For operation in air, probe mounting type "10" (without pocket) must be cho­sen.

3.4.2 Approved probes and sheaths

see current data sheet 606710

10