Forward Light Scatter Dust Monitor QAL181

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QAL181 Standard Type

QAL181 Standard Type
Suitable for emission gas measurement at big boiler or big kiln.
Long sensor (Whole length 1557mm) is available.
Self diagnosis function on the transmission surface of the sensor is available.

Model

QAL181 Sensor

Housing Material

ADC(epoxy coated)

Enclosure Rating

IP65

Temperature

Ambient Temp:-25℃~+55℃
Temperature inside the exhaust gas pipe:
0℃~+250℃(Standard)
0℃~+400℃(Option)

Min. Duct Dia.

φ250mm

Process Connection

Flange 80A over

Air purge

Requires continuous air supply of 30 to 40 litres/minute.

 

Model

QAL181 Interface Module

Power Supply

90~260VAC 1A(50/60Hz)

Outputs

DC4~20mA
(isolated, resistance load max.500Ω)
Serial RS232C・RS485
Relay contact 1cX2(AC250V 2A)

Inputs

 

Sensor connection point

1

Resolution

< 0.01mg

Self-checks

Zero and Span checks

Memory capacity

(1 Sensor)
Short:7 days @ 1 minute
Pulse data:2 hours @ 1 second
Alarms:500 entries

Housing Material

ADC(epoxy coated)

Enclosure Rating

IP65

Display

LCD(Bar-graph,Values,Trend screen etc)

 

Operating Principles

Laser light is irradiated on dust particles, and the scattered light (forward light scattering method) is collected and scattered by the mirror, and then detected through the quartz rod. As forward-scattered light from which the largest scattering intensity can be obtained is collected with an efficient collection mirror and detected through the quartz rod without transmission loss, the monitor can make stable detections with less influence of noise.