General information

Design

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, enclosure

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 in operation

-30 ... +70 °C during transport and storage

Ex

-20 ... +60 °C in 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.

Purging

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.

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

General information

Configuration hybrid cable

Two optical fibers and two twisted copper wires in one cable for 24 V DC. Single-mode optical fiber fabricated 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

• An external power supply must be additionally ordered for > 500 m
• 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 cable installation

Humidity

< 95% rel. humidity, above dew point (in operation and storage)