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소각로 온도계 - CDA
Incinerator Thermometer  
The CDA incinerator thermometer is intended for measurement of the atmosphere temperature in waste incinerators. The CDA thermometer can be used for gas or flame temperature measurement in a variety of other plant situations provided there is a sufficient path length.

The non contact infrared thermometer reading is unaffected by cold CO2 so it will “ see through” a cold combustion atmosphere to measure a hot atmosphere beyond.
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In an incinerator it can be pictured as an “invisible thermocouple” extending into the atmosphere above the bed by perhaps 2m/6.5ft (penetration depth depends on atmosphere conditions). In use it is fitted wholly external to the incinerator, usually to a flanged tube penetrating the wall.

Incinerator plant  

The CDA incinerator thermometer fits the standard Land System 4 thermometer mounting accessories and protection jackets which can be air or water-cooled. The sighting tube should normally be air-purged.

The incinerator thermometer operates on a simple 2-wire loop connection and outputs a 4 to 20mA signal linear with temperature.

The thermometer reading is insensitive to the presence of gases other than CO2 and is relatively insensitive to particulate matter in the atmosphere - i.e. it measures true gas temperature.

As an approximate guide, good measurements are possible for temperatures above 600°C/1112°F, at CO2 concentrations above 4% and for path lengths of a few metres. At higher temperatures lower concentrations and/or shorter paths can be measured.

  Temperature range: 400 to 1800°C/752 to 3272°F
  Output: 4 to 20mA linear (2-wire loop connection)
  Field of view: 20mm/0.79in parallel to 600mm/23.6in (nominal)
  Response time: 1 to 10 seconds adjustable
  Emissivity Adjustment: 0.10 to 1.00 in 0.01 increments
  Resolution: 1°C/2°F
  Accuracy (absolute): <0.5% Kelvin over 600 to 1600°C/1112 to 2912°F
<1% Kelvin over 400 to 600°C/752 to 1112°F
<1% Kelvin over 1600 to 1800°C/2912 to 3272°F
  Ambient operating temperature: 0 to 50°C/32 to 122°F
  Drift with ambient temp: <2° per 10° ambient change
  Drift with time: <1°C/2°F per year
  Power supply: 11 to 45V d.c.
  Sealing: To IP65/NEMA4X requirements
  CE: EN 50-082-2 (immunity), EN 50-081-1 (emission), IEC 1010 (safety)
  Vibration: 3G, any axis, 10 to 300Hz
  A further leaflet (available on request) indicates how the measurement precision varies with temperature, CO2 concentration and path length.

A literature download on this product is available here.
Last Modified (14/10/05) 203KB
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