Siemens CD 3002 User manual

Brand: Siemens

Model: CD 3002

Type: User manual

Your

eye

in

hell

Air Blower

for CD 3002

© Siemens Laser Analytics AB Jan 2001

CD 3002 Air blower manual

Document number: CID 3002-1110 Rev. 1A

LDS 3000 Air blower Content

I

Content

1. Purging of CD 3002 using air blower 1

1.1 General 1

1.2 Installation 1

1.3 Maintanance 4

Content LDS 3000 Air blower

II

LDS 3000 Air blower Purging of CD 3002 using air blower

1

1. Purging of CD 3002 using air blower

1.1 General

In application with high dust load and ash build-up in front of the lens in

CD 3002 very high purging flows may be necessary. For these applica-

tions an air blower producing flow rates in the 1000 ltr/min. range can be

used. A typical application where this is preferable is in MWI (municipal

waste incineration). This manual relates to the installation and operation

of the air blower set supplied by Siemens Laser Analytics.

1.2 Installation

An important issue is the counter pressure build up at the output of the

air blower. It is vital to keep this as low as possible since the air flow is

decreasing when the counter pressure increases – se the graph below.

Flow rate vs counter pressure.

A large cross section of the air blower output and a short tube is param-

eters that affects this in a positive direction. If a long tube must be used

– make sure it has a large diameter. The following diagram illustrates the

flow changes with different output tubes and may serve as a guide when

the set-up is designed. If the air blower is serving two sensors it is very

important that the lengths of the tubes to the two sensors are equal. This

ensures that the air is split 50/50 between the two.

0 200 400 600 800 1000

0

40

80

120

160

200

Flow rate [ltr/min]

Counter pressure [mbar]

Flow rate vs counter pressure

Purging of CD 3002 using air blower LDS 3000 Air blower

2

Flow rate vs length of the tube between the air blower and the sensor.

Mechanical

The air blower should be monted close to the sensor using bolts of the di-

mension M10 on the following positions

Position of mounting holes.

110

100

1000

Length of tube [m]

Air flow [ltr/min]

Maximum flow: Q

m

Maximum flow: Q

900 ltr/min

9

m

n

900 ltr/min

226 mm

220 mm

LDS 3000 Air blower Purging of CD 3002 using air blower

3

The position of the air blower should either be horizontal with the mount-

ing plate facing downwards or vertical with the air exit facing upwards.

The figure below shows a good way of setting up the sensor with an air

blower.

Example set-up of CD 3002 with air blower.

Output air tube

Input air filter

Air blower

Purging of CD 3002 using air blower LDS 3000 Air blower

4

1.3 Maintanance

The major maintanance on the air blower is to change the input filter at

a regular interval. The time between changes is totally dependent on the

environment in which the air blower operates. The inlet under-pressure

(directly after the filter) will reveal the condition of the filter and can be

used to monitor this. Siemens Laser Analytics can provide suitable

equippment for this.

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Siemens CD 3002 User manual

Brand: Siemens

Model: CD 3002

Type: User manual

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