4© 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 O2.
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 exproofdetectorshavebeendesignedforenvironmentsinwhichtheformationofexplosiveatmospheres
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 accessiblewithfactorybasedmethodologyallowustocheckonthesensorremaining
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 H2S, 25ppm for NH3, 5ppm for NO2, <18% for O2
Available gases Standard range* Installation height Area covered
Carbon monoxide CO 0-300ppm* 1,50 to 2m from floor 300 m2
Hydrogen sulfide H2S 0-100ppm / 0-200ppm* 1m from floor 150 m2
Ammonia NH30-100ppm*/0-1000ppm/0-5000ppm 30cm from ceiling 75 m2
Nitrogen dioxide NO20-20ppm* 1m from floor 200 m2
Oxygen O20-25% vol* 1,70 to 2m from floor 200 m2
* Ranges available with RS485C detectors compatible with EUROSONDELCO / SIEMENS CC62P
