Transcript Diapositiva 1

direx
Infrared exproof 4-20mA detector
DURAN ELECTRONICA. Tomás Bretón 50, 28045 Madrid, Spain
[email protected] www.duranelectronica.com
direx
advanced solution for detection
of CO2 & explosives
Exp
Infrared exproof detector 4-20mA standard for Carbon Dioxide -CO2-,
Methane, Acetylene & Hidrocarbons
CO2
CO2
Range 0-2% vol.
Resolution < 0.01% vol.
CH4
Explosive gases
Range 0-100% L.E.L.
Resolution < 0.5% L.E.L.
DURAN ELECTRONICA. Tomás Bretón 50, 28045 Madrid, Spain
[email protected] www.duranelectronica.com
C2H2
Where to install
direx
In those installations where other poisonous gases emissions affect pellistors - fluorine, silicon vapors,
trichloroethylene, sulfur dioxide, sulphydric acid…-. DIREX is not affected by these gases.
In those installations where there is a lack of Oxygen. DIREX, on the contrary to pellistors, it doesn´t require
Oxygen to work
For CO2 detection: As this is the one applicable and most accurate technology for this gas.
In those installations where maintenance operations are particularly complex because of temperature and humidity
conditions-: DIREX doesn´t need maintenance operations.
DURAN ELECTRONICA. Tomás Bretón 50, 28045 Madrid, Spain
[email protected] www.duranelectronica.com
Reliable detection without
interferences of
inhibitants of poisonous
gases
direx
4-20mA standard output 3 wires
Exproof detector
Box, adaptor & sensor ATEX certified
Minimum impact of Temperature & humidity
Constant checking of the sensor
Presence of O2 not needed for detection
Gas exposure does not reduce its useful life
No interference of inhibitans or poisonous gases
Quick response
Minimum maintenance
DURAN ELECTRONICA. Tomás Bretón 50, 28045 Madrid, Spain
[email protected] www.duranelectronica.com
CONNECTIONS
4-20mA systems – 3 wires
If the system is not provided of 4-20 mA input, but 0-5V DC or 0-10V DC, then a resistor must be connected to
carry out the conversion. It must be installed in the receiver device, never in the detector.
Depending on the voltage supply of the detector it is recommended a certain resistance to obtain a proportional
voltage to the measurement range of the detector (see below)
Detector voltage
Resistance
Output voltage
Between 12V & 18V DC
250 Ω
1V to 5V DC
Between 18V & 36V DC
500 Ω
2V to 10V DC
DURAN ELECTRONICA. Tomás Bretón 50, 28045 Madrid, Spain
[email protected] www.duranelectronica.com
CONNECTIONS
EUROSONDELCO-SIEMENS CC62P
DIREX can be connected to EUROSONDELCO / SIEMENS CC62P using
an interface. Up to 2 interfaces per module line.
Each interface allows the connection of 8 detectors automatically
addressable.
An external power supply 24V 6A should be connected for detectors
powering.
RS485
4-20mA
Connection example
DURAN ELECTRONICA. Tomás Bretón 50, 28045 Madrid, Spain
[email protected] www.duranelectronica.com
CONNECTIONS
EUROSONDELCO-SIEMENS CC62P
Connection example of detectors and
2 interfaces to EUROSONDELCO
/SIEMENS CC62P
DURAN ELECTRONICA. Tomás Bretón 50, 28045 Madrid, Spain
[email protected] www.duranelectronica.com
infrared sensor
double
wavelenght
Technical characteristics
Voltage supply
Maximum consumption
Loop maximum resistance
From 12V to 36V DC
250mA at 12V & maximum output load
250 Ω
Output resolution
0.02mA
Loop fault current
2mA
Offset Drift
Zero Drift
< 0.002% F.S/ºC
Span Drift
< 0.05% F.S/ºC
Response speed T90
Certificates
± 20µA
Box material Aluminium.
LOM 02ATEX2037 Certified
≤ 36 seconds
Useful life (MTBF)
> 5 years
Relative humidity
From 15% to 95% -no condensation-
CO2 coverage area
75m2 aprox.
Exp. coverage area
16m2 aprox.
Protection Grade
Code of explosive atmosphere
Sensor material & synterised filter:
BAS01ATEX2110X Certified
according to EN50014 (points A1-A2)
IP 435
EEx dII C T5
DURAN ELECTRONICA. Tomás Bretón 50, 28045 Madrid, Spain
[email protected] www.duranelectronica.com