Ion Science Hydrosteel 7000 - Manual (Page 10)

Hydrosteel 7000 MANUAL Ion Science Ltd
Page 10 of 43
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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