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Cross-duct sensor CD 6
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General information
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Design
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Transmitter and detector units, connected by a sensor cable
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Materials
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Stainless steel, aluminum
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Installation
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Vertical or parallel to the gas flow
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Laser protection class
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Class 1, safe to the eye
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Explosion protection
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II 1 G Ex ia op to IIC T4 Ga
II 1 D Ex ia op to IIIC T135 °C Da
A defined leak rate can only be guaranteed when using high-pressure window flanges. Otherwise, it may be necessary for the owner to carry out an evaluation in accordance with ATEX
DEMKO 06 ATEX 139648X;
IECEx UL 13.0029X
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Design, housing
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Degree of protection
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IP65
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Dimensions
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Diameter: 163, L: 450 mm
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Purging gas tube in mm
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400 (370 net) x 44 x 40
800 (770 net) x 44 x 40
1 200 (1 170 net) x 44 x 40
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Weight
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2 x approx. 11 kg
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Mounting
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DN 65/PN 6, DN 80/PN 16 or ANSI 4"/150 lbs
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Please note:
- For purging tubes with a length of 800 and 1 200 mm, the wall thickness must not exceed 200 mm with DN 65/PN 6 connections. To carry out measurements with thicker walls, please contact Siemens.
- The optimum adjustment of the flanges can change with high differences in temperature depending on the type of assembly.
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Electrical characteristics
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Power supply
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24 V DC, supply from central unit via hybrid cable
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Power consumption
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< 2 W with non-Ex configuration, max. 0.6 W with Ex configuration
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Climatic conditions
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Sensor temperature
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Non-Ex
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-20 ... +70 °C during operation,
-30 ... +70 °C during storage and transportation
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Haz:
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-20 ... +60 °C during operation,
-30 ... +70 °C during storage and transportation
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Humidity
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< 95 % RH, above dew point
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Pressure
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800 ... 1 100 hPa
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Temperature range on the sensor side of the process interface (connection plate)
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-20 … +70 °C
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Measuring conditions
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Measurement path
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0.3 ... 12 m (other lengths on request)
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Dust load
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The influence of dust is very complex and depends on the path length and particle size. The optical attenuation increases exponentially at longer path lengths. Smaller particles also have a large influence on the optical attenuation. With high dust load, long path length and small particle size, the technical support at Siemens should be consulted.
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Accessories
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Purging
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Nitrogen is permissible as the purging gas for the sensor side. Nitrogen, steam, air and gases which are not subject to the pressure equipment directive Cat. 2 are permissible as purging gases for the process side.
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Purging with instrument air, N2
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- Max. overpressure in the sensor
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< 500 hPa
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According to ISO 8573-1:2010 [2:3:3]
Note: It is sufficient if the pressure condensation point is min. 10 K below the minimum ambient temperature.
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Purity better than 99.7 %. For oxygen measurements, an O2 content < 0.01% in the purging gas (optical path length ? 1 m, min. 5% oxygen in the process gas)
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- Maximum flow rate (process purging)
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500 l/min
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Benchmark: < -10 °C, condensation on the optics must be avoided
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Blower purging
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40 hPa
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850 l/min
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370 W
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- Degree of protection (fan)
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IP54, cover required to protect against rain
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Steam purging
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Overheated
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240 °C
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> 4 000 hPa
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16 000 hPa, refers to a volume flow of approx. 1 100 l/min
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Hybrid and sensor cables
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General information
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Configuration hybrid cable
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Two optical fibers and two twisted copper wires in one cable for 24 V DC. Single-mode optical fiber configured at both ends with E2000 angle connectors. Multimode optical fiber configured at both ends with SMA connectors.
Cable is flame-retardant, very good resistance to oil, gasoline, acids and alkalis, outer sheath UV-resistant
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Cable sheath
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Oil-resistant polyurethane
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Dimensions
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- For > 500 m, an external power supply must be additionally ordered
- For installation in hazardous zones, non-intrinsically-safe cables have to be spatially separated from intrinsically-safe lines
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< 8.5 mm
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- Use in non-hazardous and Ex Zone 2: Up to 700 m
- Use in Ex Zone 0 and Zone 1: Up to 250 m
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Weight
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75 kg/km
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Maximum tensile force
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200 N
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Maximum lateral pressure
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1 000 N/cm
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Impact resistance
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200 N/cm
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Maximum tensile strength
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500 N
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Minimum bending radius
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12 cm
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Climatic conditions
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Ambient temperature
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-40 ... +70 °C during transport, storage and operation
-5 ... +50°C during laying
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Humidity
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< 95% rel. humidity, above dew point (in operation and storage)
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