Duran Electronica DURTOX-X, Installation & User Manual

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© 2010 DURAN ELECTRONICA S.L.
All rights reserved · www.duranelectronica.com
1. DURTOX-X. Electrochemical technology detectors
DURTOX-X
is an exproof detector using electrochemical technology for the detection of toxic gases and O
2
.
Communication formats
• RS485C
addressable, 4 wire connection, compatible with
EUROSONDELCO
and
SIEMENS
CC62P
control panels. Up to 16 detectors can be connected in parallel on the same loop.
• 4-20mA
, 3 wire connection, compatible with any standard system provided with this type of input.
Applications
DURTOX-X
exproof detectors have been designed for environments in which the formation of explosive atmospheres
due to gases or vapours is probable, and assure a high level of protection.
(Group of apparatus II –
ATEX
Directive Category 2)
Special features
• Provided with a 12bit microprocessor
allowing total control over the sensor status..
• Thermal compensation
that allows a correct response from each of the electrochemical sensors
when faced with temperature variations, except for DURTOX-X O2, which due to its systems does
not require such a feature.
• Self testing hardware.
• Digital filter
based on variable samplings of the sensor average values
• Auto-Zero automatic adjustment
This special feature monitors zero value in relation to sensor
response and electronics. The following protocol is used for this: Every 30 minutes an automatic
test is performed, if drift is +/- than 2% of the full scale, it will readjust itself to zero, otherwise it
will be shown as a readout.
• Other features
accessible with factory based methodology allow us to check on the sensor remaining
useful life, date of manufacture, date of last calibration and serial number.
2. RELAY OUTPUT MODULE (optional)
The optional relay output for the RS485 models of
DURTOX-X
is programmed with the following default values:
Activated, instantaneous –no delay-
Alarm: 50ppm for CO, 10ppm for H
2
S, 25ppm for NH
3
, 5ppm for NO
2
, <18% for O
2
Available gases
Standard range*
Installation height Area covered
Carbon monoxide CO 0-300ppm* 1,50 to 2m from floor 300 m 2
Hydrogen sulfide H
2
S 0-100ppm / 0-200ppm* 1m from floor 150 m 2
Ammonia NH
3
0-100ppm*/0-1000ppm/0-5000ppm 30cm from ceiling 75 m 2
Nitrogen dioxide NO
2
0-20ppm* 1m from floor 200 m
2
Oxygen O
2
0-25% vol* 1,70 to 2m from floor 200 m
2
* Ranges available with RS485C detectors compatible with EUROSONDELCO / SIEMENS CC62P