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ED810 INSTRUCTION MANUAL 27-02-07 3
MARKING
All units have a rating label which carries the following important information:-
Model type: GAS DETECTOR TYPE ED810
Input voltage: 12Vdc/24Vdc (delete as appropriate)
Vmax in; Um: 250V
Code: [EEx ia] II C
Certificate no. Baseefa03ATEX0507
Epsilon x,
gas group II (1) G
and category:
CE marking,
Notified body
number:
Serial no. (serial number must be entered here)
Year of construction: (year of manufacture must be entered here)
GENERAL
The ED810 is a fixed installation gas detection system which can detect a wide range of
flammable and toxic gases dependent upon sensor type used.
The ED810 is designed for use in 12V or 24V DC insulated and earthed return electrical
systems. For insulated return systems special consideration should be given to the
“Hazardous Area common connection” terminal. This should normally be connected to a
good quality earth suitable for intrinsically safe equipment. However this terminal is
internally connected to 0V (-VE) of the DC supply and on insulated return installations may
produce an earth fault. Isolation can be provided by using a DC-DC inverter, or if mains is
available, a suitable linear power supply unit. Both are available from EDL.
Attention is drawn to the need for correct cabling, particularly to the sensors located in the
Hazardous Area. The cable supplied by EDL for use with the ED810 has been tested to
ensure correct parameters, see installation section of this manual.
Attention is also drawn to the need for calibration soon after installation. When supplied
alarm levels are approximately set for the target gas (if stated with order) so that a measure of
immediate protection is obtained once correct operation has been ensured.
1180