Analytical performance

Measuring range

Internally adjustable

Detection limit at standardized conditions:
25 °C gas temperature, 1 000 hPa, 1 m effective optical path length, 3 s integration time and constant ambient conditions.

O₂: 200 ppmv

CO: 0.6 ppmv

Linearity (under standard conditions)

Better than 1%

Repeatability (under standard conditions)

O₂: 1% of the measuring range

CO: 0.5 % of the measuring range

General information

Design

Transmitter and detector units, connected by a sensor cable

Materials

• Sensor enclosure: treated aluminium/stainless steel
• Process interface: acid-resistant stainless steel
• Window: hardened borosilicate glass

Installation

In-situ or bypass

Concentration units

ppm, vol. %, mg/Nm³

Display

Digital concentration display (4 digits with floating decimal point)

Laser protection class

Class 1, safe to the eye

Explosion protection

Optionally, according to

• ATEX II 2G Ex de op is IIC T6
  ATEX II 2D Ex tD A21 IP65 T85 °C
• FM Class I, II, III Div 1 Groups A, B, C, D, E, F, G T6
  FM Class I, Zn 1, AEx d IIC T6
  FM Class II, Zn 21, AEx td T85 °C
• XP Class I, II, III Div 1 Groups C, D T6 Ta = 55 °C;
  DIP Class II,III Div 1 Groups E, F, G T6 Ta = 55 °C; Class I, Zn 1, Ex d IIC T6 Ta = 55 °C; Zn 21, Ex tD T85 °C Ta = 55 °C

Design, enclosure

Degree of protection

IP65 according to EN 60529

Dimensions

For each unit (transmitter, detector)

• Diameter: 165 mm
• Length: 357 mm

Purging tube

Length, outer diameter, inner diameter:
340, 48, 44 mm

Weights

• Detector unit

6.0 kg

• Transmitter unit

5.2 kg

• Process interface

• for DN50/PN25

5.3 kg

• for ANSI4''/150 lbs

Approx. 12 kg

Connection dimension customer flange

DN 50/PN 25, DN 50/PN 40 or ANSI 4"/150 lbs

Electrical characteristics

Power supply

24 V DC nominal (18 ... 30.2 V DC)

Power consumption, maximum

10 VA

EMC

In accordance with EN 61326-1

Electrical safety

In accordance with EN 61010-1

Fuse specifications

T1.6L250V

Dynamic performance

Warm-up time at 20 °C ambient temperature

Approx. 15 min

Response time (T90)

Approx. 2 s, depends on application

Integration time

0 ... 100 s, selectable

Influencing variables

Variations in ambient temperature

< 0.5%/10 K of the measuring range

Process gas temperature

With compensation: < 1 %/100 K of the measuring range

Variations in atmospheric pressure

Negligible

Process gas pressure

O₂: With compensation: < 1%/4 000 hPa of the measuring range

CO: Negligible

Variations in supply voltage

Negligible

Electrical inputs and outputs

Number of measurement channels

1

Analog outputs

2 outputs, 4 ... 20 mA, floating, ohmic resistance max. 660 ?. External isolating power supplies may have to be provided by the customer.

Analog inputs

2 inputs, designed for 4 ... 20 mA, 120 ?

Digital outputs

2 outputs, with switchover contacts, configurable, 24 V/0.5 A, floating, single pole double throw (SPDT)

Digital input

1 input, designed for 24 V, floating, configurable

Service port

Ethernet 10BaseT (RJ-45)

RS 485 PROFIBUS DPV0 version

Two-wire interface, up to 3 Mbit/s, -7 … 12 V

RS 485 Modbus version

Two-wire interface, up to 115 200 bit/s, -7 … 12 V

Cable to customer interface (not included in standard delivery, ATEX or optional)

Analog connection cable
(with ATEX configuration: only supplied cables may be used!)

10 x 2, with shielding in twisted-pair configuration (depending on type and number of I/Os used)

PROFIBUS DP connection cable
(with ATEX configuration: only supplied cables may be used!)

1 x 2 + 4 (PROFIBUS DP hybrid cable)

Modbus connection cable
(with ATEX configuration: only supplied cables may be used!)

1 x 2 + 3, with shielding in twisted-pair configuration

Cable length for ATEX configuration

3 m

Conductor cross-section

Min. 0.34 mm?

Cable diameter

8 ... 12 mm or 13 ... 18 mm

Minimum bending radius ATEX-PROFIBUS

110 mm

Sensor cable (not included in standard delivery, ATEX or optional)

Sensor cable type configuration

4 x 2, with shielding, in twisted-pair configuration

Conductor cross-section

Min. 0.34 mm?

Cable sheath

PUR (polyurethane)

Dimensions

• Diameter: 11 mm
• Length: up to 25 m

Minimum bending radius

ATEX: 85 mm

Climatic conditions

Ambient temperature range

• -20 ... +55 °C during operation (additional solar radiation not permissible!)
• -40 ... +70 °C during transport and storage

Temperature range on the sensor side of the process interface (connection plate)

-20 ... +70 °C

Atmospheric pressure

800 ... 1100 hPa
(for ATEX and FM version)

Humidity

< 100 % rel. humidity

Measuring conditions

Measurement path

0.3 ... 8 m (other lengths: please contact Siemens)

Process gas pressure, temperature

• O₂: 900 ... 1 100 hPa, 0 … 600 °C
• O₂: 700 … 5 000 hPa, 0 … 200 °C
• CO: 700 … 2 000 hPa, ?20 … 300 °C
• CO: 800 … 1 200 hPa, ?20 … 700 °C

Dust load

The influence of a high dust load is complex, and depends on the optical path length and particle size distribution.

Purging

Purging gas

• Oxygen (for O₂ and CO applications)
• Instrument air (for CO applications)

• Quality

O₂ application: Purity better than 99.7 % in order to achieve full performance. For oxygen measurements, an O₂ content < 0.01 vol. % in the purging gas is recommended.

• Dew point

< -10 °C, condensation on the optics must be avoided

Sensor purging

• Max. overpressure in the sensor

500 hPa

• Purging gas temperature on sensor side

0 ... +55 °C

• Flow

O₂ application: When commissioning a sensor enclosure previously filled with air: 3 ... 5 l/min (for at least 15 min), subsequently: at least 0.25 l/min

Purging on the process side (optional)

• Pressure at purging gas inlet

2 000 ... 8 000 hPa

• Flow

Dependent on process gas pressure, process gas velocity, dust load, moisture, etc. up to max. 50 l/min