1 introduction, 2 application, 3 ex marking – JUMO 60.5051 Explosion-protected surface-mounting thermostat, ATH-EXx Operating Manual User Manual

Page 6

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.

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

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

– = no; X = yes

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.

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.

End of scale

°C

Danger-

ous

reaction

Fire and

explosion hazard

Water

conta-

mination

Toxicological data

Ignition

temp.

°C

Explosion

limit

% v/v

irritant

danger to

health

toxic

< +200°C

–

+355°C

0,6 - 8 V

–

 +200°C

 +350°C

–

+490°C

- -

–

> 350°C

 +500°C

–