Ashcroft S5500 Manuel d'instructions pour l'installation et l'entretien - Page 3

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Installation and Maintenance Instruction Manual for All

Stainless Steel Gas Actuated Thermometer Model S5500

(non-electrical device) in a configuration for explosion risk areas pursuant to

Directive 2014/34/EU (ATEX)Zone I and II, Category 2, Group II for gas and dust

range and manufacturer. The gauge can be provided with

additional signs and safety markings advising on special

conditions:

• Advice on the filling liquid

• Advice on calibration

• Ex (for ATEX configuration)

2.6 Safety equipment

The window uses multi-layer safety glass. This device is

fitted with a rear plug capable of being blown out.

2.7 Environmental protection

This device may optionally contain a filling liquid (e.g.

glycerin or silicone oil). The provisions set out in the

REACH regulation on production and use of chemicals

are to be respected.

3 USE IN EXPLOSION RISK AREAS PURSUANT TO

DIRECTIVE 2014/34/EU (ATEX)

Area of use:

Gas actuated thermometers are intended for installation

in pipes, tanks, plant and machinery to measure the

temperatures of gaseous and/or liquid materials. The

requirements for the explosion area are limited to Zone I

and II, Category 2, Group II for gas and dust.

Permitted temperatures:

A temperature class is not specified, since no heating

emanates from the device. The ambient temperature is

limited to the range -30 °C to 80 °C.

For the non-electrical part of the devices, the standards

EN 13463-1, EN 13463-5:2009 and EN 60079-0:2011

are applicable with regard to explosion protection. The

relevant requirements of these standards are satisfied.

The documentation has been filed with TÜV-Nord-Cert

(see declaration of conformity).

Labeling:

II 2 G c or II 2 D c

4 TECHNICAL DATA

The detailed technical information can be found in the

documents in the Appendix, Chapter 12.

All sales subject to standard terms and conditions of sale. S5500_Gas_Act_Therm_RevA_(008-10293)_05-26-21

5 LABELING ON THE DEVICE

The label with the serial number and type designation is

located on the outside right of the housing. The nature

of the subject characteristics is encoded in the type

designation.

5.1 Overview

The label with the marking for explosion risk areas is

located on the housing.

6 CONSTRUCTION AND FUNCTION

6.1 Overview

1 Bulb

2 Capillary line

3 Movement

4 Bourdon tube

5 Link

6.2 Description of function

The temperature is transferred via thermal conduction to

a compressed inert gas inside the sensor. The properties

of gases mean that any temperature change brings about

a change in pressure, and this is transferred via a capillary

tube (in the fixed stem or executed as a flexible capillary

line) to the Bourdon tube on the gauge. This produces a

deflection of the Bourdon tube that is proportional to the

change in pressure. A rotary movement is produced via a

connecting rod and a movement, which is transferred to

the indicator arm using an arbor. The angle of rotation for

the complete range is approx. 270°.

6.3 Description of components

6.3.1 Bulb

The temperature sensor has a diameter of 6-10 mm and

a length of 55-1000 mm, and contains the inert gas under

pressure. Its active length is 55-190 mm, dependin gon

the diameter. The temperature sensor must not be

subjected to pressure without a supplementary thermowell.

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