ExDetector
IRCO2
ExDetector
IRHC
Data Sheet
Gas Detection and Warning Systems
Gas Detector
ExDetector IRCO2 / IRHC
Data Sheet
Installation / Set-up In combination with a controller system, gas detectors in the
ExDetector IR range haven the following functions:
● Measurement and display of the current concentration of gases and
vapours
● Monitoring and warning of the presence of these gases
● Initiating protective measures:
- Technical: countering a further increase in concentration (fans,
switching off....)
- Organisational: visual and acoustic messages and warnings.
Detector Controler A gas warning system consists of the following components:
● Sensor
● Controller system
● Controllable devices such as fans, warning signs, and solenoid valves
Product Features ● Exdetector IRCO2: detection of carbon dioxide CO2
Measurement range: 2.0 vol %
● Exdetector IRHC: Monitoring gases and vapours capable of forming an
explosive mixture
Measurement range: 0 ... 100 % LEL
● NDIR (non-dispersive infrared)
● Linear measurement signal 4 ... 20 mA
r
cto
ete
D
One-man calibration (using optional calibrator)
Ex
●
● Certified for use in Ex-zones 1 and 2
● Three-conductor technology
- 24 VDC
- 4 ... 20 mA
- Neutral
How It Works The NDIR sensor element consists of a light source, optical band filters,
and detectors. The light source emits a pulsing, wide-band spectrum. The
light beams pass through the measuring chamber, and the substance
Light source being monitored enters it by diffusion.
Certain gases have the property of absorbing some radiation intensity in
particular wave-length regions. At the end of the optical path, there are two
detectors. Before radiation reaches them, it must pass through two optical
Path of beam band filters. Their transmission range is chosen to suit the detection task.
Gas inlet The transmission range of the reference filter is limited to a wave-length
range that is not absorbed by the gas to be detected. The filter of the
Measuring detector only allows passage of the spectrum that can be absorbed by the
chamber gas. From the difference recorded between the detector and its
compensation detector, the concentration of the gas is determined using
Optical filter
linearisation algorithms. In addition, a temperature measurement
compensates for ambient temperature effects.
Detectors
The detector electronics are supplied with 24VDC. They supply a linear, 4 ...
20 mA signal, proportional to the quantity being measured, for further
evaluation. Using the optional calibrator, which is also explosion-protected,
operating parameters can be programmed and the detector element
adjusted. Thus, operation and maintenance can also be carried out in
hazard zones.
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Gas Detector
ExDetector IRCO2 / IRHC
Data Sheet
Block Diagram "EEx e" "EEx d" "EEx e" "EEx d"
DC DC
1
DC
U
CPU #
2 4-20mA
U
# Interface
3
"EEx i"
Technical Data ExDetector IRHC 32
ExDetector IRCO2 31 ExDetector IRHC 33
General ExDetector IRHC 34
Field of application Ex-zones 1 and 2
Equipment category II 2G
Installation Wall-mounting
Combustible gases / vapours
Detection gases Carbon dioxide CO2 (see list "Technical Data,
Substances)
Measurement range: 0 ... 2.0 vol % 0 ... 100% LEL
Measurement NDIR
principle: (non-dispersive infrared)
Depending on detection gas
Response time (T90)
< 50 sec
Max. flow speed 6 m/sec
Temperature range -20 °C ... +55°C
Air pressure range 900 ... 1100 hPa
Humidity range 30 ... 90 % RH
Technical Data Detectable substances:
Substances ExDetector IRHC 32:
propane, n-pentane, n-hexane, nonane, methanol, ethanol, butanol, butyl
acetate, methyl methacrylate, dioxane, methyl ethyl ketone (MEK)
ExDetector IRHC 33:
methane, benzene, toluene, xylene
ExDetector IRHC 34:
acetylene (ethyne)
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Gas Detector
ExDetector IRCO2 / IRHC
Data Sheet
Technical Data
ExDetector IRCO2 / IRHC
Installation
Field interface 4 ... 20 mA
18 ... 32 VDC SELV / PELV
Supply voltage (detector
max 5.5 W
terminals)
Fuse 100 mAT
Ex-classification: Ex ib IIC; only for connection to a certified
Calibration interface intrinsically-safe circuit:
Ui = 13.8 V / Pi = 432 mW / Li = 0 / Ci = 0
Safety-related maximum
Um = 250 V
voltage
Max. cable length 1000m depending on cable type
3 active conductors,
Connection cable screened, preferably
H05VVC4V5-K
Gasmesscomputer 8022,
Suitable controller
GMC 8022E, GMC 8364
Housing/electronics: Sensor head:
II 2G II 2G
Explosion-protection
Ex de [ib] IIC T6 Ex ed IIC
Certificate
PTB 00 ATEX 1075 T6 for -20°C < TA < 55°C
-20°C < TA < +55°C PTB 00 ATEX 1076U
Functional assessment Applied for
Mechanical Data ExDetector IRCO2 / IRHC
Degree of protection
IP54
(housing)
Sensor: stainless steel
Housing material
Housing: aluminium
Weight ca. 1300 g
Cable gland Cable diameter 8 ... 13 mm
2
Connection terminals 3 terminals 0.5 ... 1.5 mm
r
to
ec
et
D
Ex
85 mm
170 mm
110 mm
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Gas Detector
ExDetector IRCO2 / IRHC
Data Sheet
Assessments ● Explosion-protection Certificates
- Housing/electronics (ExDetector IRCO2 / IRHC):
II 2G
Ex de [ib] IIC T6
PTB 00 ATEX 1075
- Sensor:
II 2G / Ex ed IIC
T4 für -20°C < TA < +80°C
T6 für -20°C < TA < +55°C
PTB 00 ATEX 1076U
● Functional assessment: applied for
Safety For its intended use in Ex-zones 1 and 2, the ExDetector, which complies
with the following standards, ensures the highest levels of safety and
reliability:
● EN 50270 (product standard)
Electromagnetic compatibility of electrical equipment for the detection
and measurement of combustible gases, toxic gases, oxygen and
breath alcohol.
Accessories ● Test-gas set
● Calibration gases
● Calibrator Calibrationbox-i
Service Everything from a single supplier - from system design to installation of
your new gas warning system. The comprehensive coverage of our sales
and service network ensures this. Ask us about regional representatives in
your area. And after purchase, our service technicians are available to help
and advise.
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Gas Detector
ExDetector IRCO2 / IRHC
Data Sheet
Bieler + Lang GmbH
Gas Detection and Warning Systems
Postfach 1129, D-77842 Achern
Von-Drais-Straße 31, D-77855 Achern
Telephone +49 (0) 78 41 69 37 - 0
Telefax +49 (0) 78 41 69 37 - 99
E-mail info@bieler-lang.de
Technical status: 01/2011
Internet www.bieler-lang.de We reserve the right to make technical changes!
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