7MB6121-.....-....

LDS 6, 19" central unit

Analytical performance

Measuring range

Depending on sample gas component: See table for standard applications.

Detection limit (DL):

Calculated in accordance with VDI 2449, measured on every supplied analyzer during the temperature test (between 5 ... 45 °C) in accordance with VDI 4203.

Depending on sample gas component: see table for standard applications.

For application letter ET and FT: in accordance with the requirements of 17th and 27th BImSchV

Smallest recommended measuring range (with 1 m path length)

Depending on sample gas component: see table for standard applications.

The maximum applicable measuring ranges can be found in the table of standard combinations. These can only be applied if the individual process conditions allow it. Please contact the Technical Support from Siemens for checking the applicability.

Accuracy¹⁾

2% / 5%, depending on sample gas component and application letter. At best: detection limit. See table for standard applications.

For application letter ET and FT: in accordance with the requirements of 17th and 27th BImSchV

Linearity

Better than 1%

Repeatability

2% of the measured value or same amount as the detection limit (whichever is larger)

For application letter ET and FT: in accordance with the requirements of 17th and 27th BImSchV

Calibration interval

No recalibration required thanks to internal reference cell

General information

Concentration units

ppmv, Vol%, mg/Nm³

Display

Digital concentration display (5 digits with floating decimal point)

Laser protection class

Class 1, safe to the eye

Certificates

CE marking, TUV, MCERTS

Design, enclosure

Degree of protection

IP20 according to EN 60529

Dimensions

177 x 440 x 380 mm

Weight

Approx. 13 kg

Mounting

Horizontal

Electrical characteristics

Power supply

100 ... 240 V AC 50 ... 60 Hz, automatically adapted by the system; with a 3-channel central unit, an additional external power supply +24 V DC, 50 VA is included in the scope of delivery

Power consumption

50 W

EMC

According to EN 61326 and standard classification of NAMUR NE21

Electrical safety

According to EN 61010-1, overvoltage classification II

Fuse specifications

100 ... 240 V: T2.5L250V

Time response

Warm-up time at 20 °C ambient temperature

Approx. 15 min

Response time

Min. of 1 s, depending on application

Integration time

1 … 100 s, adjustable

Influencing variables

Ambient temperature

< 0.5%/10 K of the measured value

Atmospheric pressure

Negligible

Process gas pressure compensation

Recommended

Process gas temperature compensation

Recommended

Process gas pressure range

See table for standard applications

Power supply changes

< 1%/30 V

Electrical inputs and outputs

Number of measurement channels

1 … 3, optional

Analog output

2 per channel, 4 ... 20 mA, floating, ohmic resistance max. 750 ?

Analog inputs

2 per channel, designed for 4 ... 20 mA, 50 ?

Binary outputs

6 per channel, with changeover contacts, configurable, 24 V AC/DC/1 A, floating

Binary inputs

6 per channel, designed for 24 V, floating, configurable

Communication interface

Ethernet 10BaseT (RJ-45)

Climatic conditions

Temperature range

5 … 45 °C during operation, -40 … +70 °C during storage and transportation

Atmospheric pressure

800 … 1 200 hPa

Humidity

< 85% relative humidity, above dew point (in operation and storage)