Forward Scattering Dust Monitor QAL181

►Features
This monitor can make stable detections regardless of the presence or absence and types of dust chambers and exhaust gas treatment systems including a large boiler and large kiln.
The pin spot measurement minimizes the influence of various conditions. High resolution: 0.1 mg/m3 Recommended measuring range: 0 to 10/100 mg/m3 A zero span self-diagnosing function is provided. A 16-channel sensor is supported by the multi-controller (optional).

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►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.

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►Standard Specification

Model	QAL181 Interface module
Power Source	AC90～260V 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）　Long：2 months @ 15 minutes 　Short：7 days @ 1 minute 　Pulse data：2 hours @ 1 second 　Alarms：500 entries
Housing	Enclosure Rating　IP-65 　Material　ADC 　（epoxy coated）
Display	LCD 　（Bar-graph, Values, Trend screen etc）