Ion-science Hydrosteel 7000 User Manual download pdf (Page 10)

Hydrosteel 7000 MANUAL Ion Science Ltd

Page 10 of 43

Unrivalled Detection. www.ionscience.com

Introduction to safety certification

Apparatus certification (ATEX)

Hydrosteel 7000 has been issued with EC-type examination certificate Baseefa04ATEX0205 BASEEFA

2001. Confirming compliance with the European ATEX directive 94/9/EC for group II, Category 2 gas

atmospheres, EEx ia IIc T4 (T

amp

–40 C to +60 C). This instruction manual describes the installations that

conform with PD60079-12:2000 electrical installation in hazardous areas. When designing systems for

installation outside the UK, the local Code of practice should be consulted.

Certification label information

The certification label is fitted on the top outer surface of the enclosure. This shows the certification

information plus the Ion Science Ltd name, location, instrument serial number and year of manufacture.

Other non-European certification information may also appear on this label.

Note: The specified operating temperature range for the Hydrosteel 7000 is –20 C and +50 C, due to

constraints on the internal components.

System certificates

Currently no system certificates have been issued for this equipment. The Hydrosteel 7000 can be operated

safely in the hazardous area utilising a range of safety barriers. See Power and signal requirements in the

Installation section for full details.

Main power supply

When installed in a hazardous area the Hydrosteel 7000 must be powered from galvanic isolator, safety

barrier or IS power supply. The power supply must meet operational and safety requirements. In addition,

the power supply must not create a spark risk in conjunction with the power cable. The specific cable

parameters allowed will depend on the safety barriers use.

4-20mA outputs

The 4-20 mA outputs are 2 wire loop powered. That is, for operation in addition of a 4-20 mA receiver, there

must be a loop power source. This source must be intrinsically safe or supplied through an appropriate

safety barrier or galvanic isolator.

RS232 Connection

Non-hazardous Conditions

Under non-hazardous area conditions the RS232 port may be connected to a self-contained battery powered

computer containing 30 V or less. This allows connection to most laptop computers.

Hazardous Conditions

If the laptop is to be used in the hazardous areas local safety rules must be followed. Often all that is

required is a suitable permit and the use of an explosive gas detector to prove that the local area is safe at

the time of download. Under hazardous conditions this circuit must only be connected to a galvanically

isolated intrinsically safe RS232 connection.

To summarise;

 The Hydrosteel 7000 can be installed in zones 1 & 2 in the presence of most common industrial

gasses.

 A Safety barrier or isolator is required for the main power supply.

 Safety barriers or isolators are required for the 4-20 mA outputs if they are used.

 A portable computer may be used to download data provided local rules such as permits and safety

precautions are followed. The use of a standard laptop does not invalidate the HY7K safety

certificate.

See Power and signal requirements in the installation section for full details.

Hydrosteel 7000

S/No: “**-*****”

Manufactured: “Date”

Baseefa04ATEX0205

II 2 G EEx ia IIC T4,

-20 C <= T ambient <= +60 C

Ion Science Ltd, Cambs, England

1180

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