features

FORWARD SCATTERING DUST MONITOR QAL181  
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).

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.
Forward Light Scatter Measurement

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）

  • products lineup

    • QAL181
      Standard Type

    • QAL181 PLUS
      MultiController Type