Dust Monitor

Bulletin 11K01C01-01E

www.yokogawa.com/an/

Subject to change without noticeAll Rights Reserved. Copyright © 2005, by Yokogawa Electric Corporation

Dust MonitorDT450G

Vig-PMK-G·NL-10E

YOKOGAWA ELECTRIC CORPORATION

World Headquarters9-32 Nakacho 2-chome, Musashino-shi,Tokyo 180-8750, JAPANTel: +81-422-52-6316 Fax: +81-422-52-6619http://www.yokogawa.com/an/

North AmericaYOKOGAWA CORPORATION OF AMERICAGeorgia, U.S.Ahttp://www.yokogawa.com/us/

South AmericaYOKOGAWA AMERICA DO SUL LTDA.BRAZILhttp://www.yokogawa.com.br/

EuropeYOKOGAWA EUROPE B.V.European HeadquartersTHE NETHERLANDShttp://www.yokogawa.com/eu/YOKOGAWA ELECTRIC CIS LTD. RUSSIAN FEDERATIONhttp://www.yokogawa.ru/

Middle EastYOKOGAWA MIDDLE EAST B.S.C.(C)http://www.yokogawa.com/bh/

SingaporeYOKOGAWA ENGINEERING ASIA PTE.LTD.http://www.yokogawa.com/sg/

KoreaYOKOGAWA ELECTRIC KOREA CO., LTD.http://www.yokogawa.com/kr/

ChinaYOKOGAWA CHINA CO., LTD.http://www.yokogawa.com/cn/YOKOGAWA SHANGHAI INSTRUMENTATION CO., LTD.http://www.ysi.com.cn/YOKOGAWA SICHUAN INSTRUMENT CO., LTD.http://www.cys.com.cn/

TaiwanYOKOGAWA TAIWAN CORPORATIONhttp://www.yokogawa.com.tw/

IndiaYOKOGAWA INDIA LTD.http://www.yokogawa.com/in/

AustraliaYOKOGAWA AUSTRALIA PTY. LTD.http://www.yokogawa.com/au/

Printed in Japan, 312(KP) [Ed : 04/b]

Represented by:

DT450G

Detecting Leakage and Damage to Bag Filter and Monitoring Operation Status of Electrostatic Precipitator

Triboelectric method Dust Monitor Electrostatic precipitators at boilers, incinerators, cement kilns

Bag filters at pulverized coal, granulation, sugar, powder milk plants

The DT450G Dust Monitor features improved operationality and reliability based on installation and application experiences with the previous model DT400G. Features

include one-touch automatic range setup in response to process conditions and automatic drift compensation. Also, the DT450G can measure at a process temperature

up to 250°C, allowing it to cover a wide range of applications.

Bag Filter Breakage Detection in a Pulverized Coal Injection SystemBag Filter Breakage Detection in a Pulverized Coal Injection System

Dust Monitoring to Detect Damage in Coke Oven WallsDust Monitoring to Detect Damage in Coke Oven Walls

Dust Monitoring of Exhaust Gases for Efficient ESP Operation in Cement ManufactuDust Monitoring of Exhaust Gases for Efficient ESP Operation in Cement Manufacturing ProcessDust Monitoring of Exhaust Gases for Efficient ESP Operation in Cement Manufacturing Process

Applications

The measurement range can be set through a one-touch operation in response to process conditions

Automatic drift compensation function is available

Air purging prevents moisture condensation at connecting portions

Maintenance-free operation over a long time without being affected by dust accumulation

All you need to do is just set the parameters through key operation on the front panel

Standard specifications are applicable to a wide range of applications at a process temperature up to 250°C and with a pressure of up to 200 kPa

Integrated construction of sensor and converter allows for easy installation

Flange mounting or socket welding mounting can be selected

Excellent Maintainability

Wide Range of Applications with Simple Operation

High Performance and High Reliability

Flexible Installation

FeaturesFeatures

Backwashing gas flow

Filter

Fan

Schematic Flow Diagram of Coke Oven with Measurement Points of Dust

Cement Manufacturing Process and Dust Measurement Point

Supporter

250mm

Protective pipe Air purge

:Leak detect point

Coal Hot air flow

Pulverized coal flow

BunkerBag filter

Feed tank

Distributor

Storage tank

Smokestack

Pulverizing mill

Exhaust gas

Hot stoveBlast

furnace

Pulverized coal injection system Gas Flow in Reverse Flow Bag Filter Equipment Measurement Example

Narrow flue

Narrow flue

Wide flue

From another coke oven

Coke Oven

·············

·············

Chimney

Purge air(instrument air)

Purge air (instrument air)

Output signal

Output signal

Filter brokenFilter broken Normal operationNormal operation

After a filter breaks, the dust increase to an abnormal level.After a filter breaks, the dust increase to an abnormal level.

Filter breaksFilter breaks

Filter operation stopsFilter operation stops

20.0mA

18.4mA

16.8mA

15.2mA

13.6mA

12.0mA

10.4mA

8.8mA

7.2mA

5.6mA

4.0mATime

Out

put s

igna

l (du

st a

mou

nt)

1 2 2 3 4 53

45

1

1

DT450G vs. Optical Dust Monitor

Relationship between Applied Voltage and Efficiency of ESP

Dus

t Con

tent

Time DT450G Optical Dust Monitor

HammeringHammering

DT450GDT450G

Optical Dust MonitorOptical Dust Monitor

Dus

t Con

tent

Time

Normal combustion chamber wallDamaged combustion

chamber wall

When the coke oven is exhausted by the extruder

Leak occurring through the wall

DT450G’s DataDT450G’s Data

Applied Voltage to ESPApplied Voltage to ESP

DT450G Dust Monitor

: Material flow: Gas flow

Smokestack

Cyclone

Burner

Flash furnace

Rotary kiln

Cooler exhaust

Exhaust gas

ESP

Clinker coolerClinker

Burner

Bucket elevatorMill

Clay

Limestone

ESP

Limestonedryer

Clay dryer

Exhaust gas

Stabilizer

Water

Monitoring System

Bulletin 11K01C01-01E

www.yokogawa.com/an/

Subject to change without noticeAll Rights Reserved. Copyright © 2005, by Yokogawa Electric Corporation

Dust MonitorDT450G

Vig-PMK-G·NL-10E

YOKOGAWA ELECTRIC CORPORATION

World Headquarters9-32 Nakacho 2-chome, Musashino-shi,Tokyo 180-8750, JAPANTel: +81-422-52-6316 Fax: +81-422-52-6619http://www.yokogawa.com/an/

North AmericaYOKOGAWA CORPORATION OF AMERICAGeorgia, U.S.Ahttp://www.yokogawa.com/us/

South AmericaYOKOGAWA AMERICA DO SUL LTDA.BRAZILhttp://www.yokogawa.com.br/

EuropeYOKOGAWA EUROPE B.V.European HeadquartersTHE NETHERLANDShttp://www.yokogawa.com/eu/YOKOGAWA ELECTRIC CIS LTD. RUSSIAN FEDERATIONhttp://www.yokogawa.ru/

Middle EastYOKOGAWA MIDDLE EAST B.S.C.(C)http://www.yokogawa.com/bh/

SingaporeYOKOGAWA ENGINEERING ASIA PTE.LTD.http://www.yokogawa.com/sg/

KoreaYOKOGAWA ELECTRIC KOREA CO., LTD.http://www.yokogawa.com/kr/

ChinaYOKOGAWA CHINA CO., LTD.http://www.yokogawa.com/cn/YOKOGAWA SHANGHAI INSTRUMENTATION CO., LTD.http://www.ysi.com.cn/YOKOGAWA SICHUAN INSTRUMENT CO., LTD.http://www.cys.com.cn/

TaiwanYOKOGAWA TAIWAN CORPORATIONhttp://www.yokogawa.com.tw/

IndiaYOKOGAWA INDIA LTD.http://www.yokogawa.com/in/

AustraliaYOKOGAWA AUSTRALIA PTY. LTD.http://www.yokogawa.com/au/

Printed in Japan, 312(KP) [Ed : 04/b]

Represented by:

Measurement objects

Measurement principle

Process conditions

Measurement range

(Note 1)

Analog output signal

Contact output signal

Ambient conditions

Construction

Materials

Power supply

Air purge

Mounting

Weight

Dimensions

Solid particles in gas

Particle size: 0.3 µm or greater

Measurement range: 0.1 mg/m3 to 1 kg/m3

Inductive electrification

Temperature: 250 °C or less

Pressure: 200 kPa or less

Gas flow rate: 4 m/s or greater (approx. 30 m/s max)

Humidity: 40 %RH or less

Range setup: One-touch automatic setup or

manual setup (Note 2)

Setup range: Variable (10 to 50 %, 10 % step)

4-20 mA DC, insulated, load resistance; 500 ΩHigh/Low alarm

Contact capacity: 5 A, 240 V AC or 24 V DC

Setting range:1 to 99 % (1 % step) of

measurement span

Temperature: –20 to 45 °C

Humidity: 95 %RH or less (non-condensing)

Vibration: 5 m/s2 (0.5G) or less

Converter: Integrated with detector, protection

rating IP 64

Sensor probe: Direct insertion

Sensor probe:Stains steel (316SS)

Insulation of sensor:PEEK

Case:Aluminum

Rating: 100 to 120 V AC, 200 to 240 V AC

Air source: Clean, dry air equivalent to instrument

air at process pressure +50 kPa

Air consumption: approx. 50 Nl/min

Connection: Rc 1/4

Flange or Socket (dedicated)

Approx. 2.3 kg (excluding flange)

172W x 173H x 672D mm

Model Suffix Code Option Code DescriptionDust monitor (heat resistant up to 250°C)

4-20 mA DC analog output + fine adjustment for measuring range

200-240V AC, 50/60Hz

100-120V AC, 50/60Hz

460mm

316SS

With air purge

Japanese

English

Socket mounting (welding socket)

Flange mounting (ANSI Class 150 2 1/2 RF)

Flange mounting (JIS 5K 65 FF)

Flange mounting (JIS 10K 80 FF)

Flange mounting (JIS 10K 100 FF)

Flange mounting (JPI Class 150 2 1/2 RF)

Always -A

Probe: Teflon coated

DT450G

Analog output

Power supply

Probe length

Sensor material

Air purge

Instruction Manual

Mounting

Option

-5

-2

-5

-05

-1

-A

-J

-E

-W

-A

-K

-M

-P

-T

-A

/TC

JPI Class 150 2 1/2 RFANSI Class 150 2 1/2 RF

JIS 10K 100 FF

JIS 10K 80 FF

JIS 5K 65 FF

Class

18

18

22.5

22.4

14

t

19

19

19

19.1

15

h

175

150

139.7

139.7

130

C

210

185

178

177.8

155

D4

8

8

4

4

g

Flange Mounted Model

STANDARD SPECIFICATIONS

DIMENSIONS

MODEL AND SUFFIX CODES

g-h

t460

(Insertion Length)

93 579

Max

.20

30127

173

172 30

146.

5

D

67

Rc1/4(Air Purge Piping Connection)

Power Cable inletOutput Signal Cable Inlet

(5 to 10)

(5 to 10)

Unit: mm

10

13

265250

Teflon coated(Option : /TC)

D

C

g-h

JIS 10K 80 FF (Example)

JIS 5K 65 FF (Example)

Note 1: Measurement range does not directly represent dust concentration. To know the absolute value of dust concentration, the relationship between the output signal and the dust concentration should be obtained by laboratory analysis or relevant way.

Note 2: With one-touch automatic setup function, measurement range is set so that the dust concentration of the process corresponds to a setpoint of setting level. In manual setup, the measurement range is set by gain (x1, x10, x100, x1000, x10000).

Refer to GS 11K01C01-01E for detailed specification.

Note: Teflon coated probe (option code “/TC”) is recommended to prevent the insufficient insulation by dust and moisture deposited on sensor probe.Teflon coated probe is designed to operate at a temperature not exceeding approximately 150 °C.