Transmitter and detector units, connected by a sensor cable
Materials
Stainless steel (1.4305/303), aluminum
Installation
Vertical or parallel to the gas flow
Laser protection class
Class 1, safe to the eye
Explosion protection
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
Design, housing
Degree of protection
IP65
Dimensions
Diameter: 163, L: 450 mm
Purging gas tube in mm
400 (370 net) x 44 x 40
800 (770 net) x 54 x 40
1 200 (1 170 net) x 54 x 40
Weight
2 x approx. 11 kg
Mounting
DN 65/PN 6, DN 80/PN 16 or ANSI 4"/150 lbs
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 between the process and environment depending on the type of assembly.
Electrical characteristics
Power supply
24 V DC, supply from central unit via hybrid cable
Power consumption
< 2 W with non-Ex configuration, max. 0.6 W with Ex configuration
Climatic conditions
Sensor temperature
Non-Ex
-20 ... +70 °C during operation,
-30 ... +70 °C during transport and storage
Haz:
-20 ... +60 °C during operation,
-30 ... +70 °C during transport and storage
Humidity
< 95 % RH, above dew point
Pressure
800 … 1 100 hPa
Temperature range on the sensor side of the process interface (connection plate)
-20 … +70 °C
Measuring conditions
Measurement path
0.3 ... 12 m (other path lengths on request)
Dust load
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 very 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.
Accessories
Purging
Nitrogen is permissible for purging on the sensor side. Nitrogen, steam, air and gases which are not subject to the pressure equipment directive Cat. 2 are permissible as purging gases on the process side.
Purging with instrument air, N2
Max. overpressure in the sensor
< 500 hPa
Quality
Instrument air
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.
Nitrogen
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)
Maximum flow rate (process purging)
500 l/min
Dew point
Benchmark: < -10 °C, condensation on the optics must be avoided
Blower purging
Maximum counter pressure
40 hPa
Maximum flow rate
850 l/min
Power consumption
370 W
Degree of protection (fan)
IP54, cover required to protect against rain
Steam purging
Steam conditioning
Overheated
Maximum temperature
240 °C
Minimum pressure
> 4 000 hPa
Maximum pressure
16 000 hPa, refers to a volume flow of approx. 1 100 l/min
Hybrid and sensor cables
General information
Configuration hybrid cable
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
Cable sheath
Oil-resistant polyurethane
Dimensions
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
Diameter
< 8.5 mm
Length
Use in non-hazardous and Ex Zone 2: Up to 700 m
Use in Ex Zone 0 and Zone 1: Up to 250 m
Weight
75 kg/km
Maximum tensile force
200 N
Maximum lateral pressure
1 000 N/cm
Impact resistance
200 N/cm
Maximum tensile strength
500 N
Minimum bending radius
12 cm
Climatic conditions
Ambient temperature
-40 ... +70 °C during transport, storage and operation
-5 ... +50°C during laying
Humidity
< 95% rel. humidity, above dew point (in operation and storage)
