Proven IR Technology for Hot CO2 Gas or Flame Temperature
Process Sensors Metis models MY45 & MY46 pyrometers measure temperature in the high absorption band wavelength region, operating in the mid, 4 micron spectral range. By utilizing these optimal wavelengths, the non-contact Infrared sensor measures Hot CO2 gas or flame temperature.
Standard temperature measurement ranges for the model MY45 are 212° to 2552°F (100° to 1400°C), and 572° to 2732°F (300° to 1500°C).
Minimum temperature ranges for the MY46 start higher at 932° to 2732°F (500 to 1500°C) or 1472° to 3632°F (800° to 2000°C) and handle most boiler applications. Consult PSC for non-standard temperature ranges.
|Measurement Range||MY46: 932° to 2732°F (500° to 1500°C) or 1472° to 3632°F (800° to 2000°C) MY45: 212° to 2552°F (100° to 1400°C) or 572° to 2732°F (300° to 1500°C)|
|Measurement Uncertainty||1°C + 0.5% of difference between measured and housing temp. (Ta = 23°C, ε = 1, t90 = 10s)|
|Repeatability||0.1% of measured temperature in °C + 0.2°C (Ta = 23°C, ε = 1, t90 = 10 s)|
|Response Time t90||100 ms adjustable up to 10 seconds|
|Output Signal||4 to 20 mA or 0 to 20ma (switchable), max. Load: 500 Ω|
|Emissivity Range||0.10 to 1.00|
|Temperature Resolution||analog: ≤ 0.1% adjusted temperature range, digital: 0.1°C|
|Ambient Temperature||pyrometer operation without cooling jacket: 0 to 70°C, storage: -20 to 80°C|
|Power Supply||24 VDC nominal (18 to 30 VDC operation)|
|Isolation||power supply, analog and digital outputs are galvanically isolated from each other and from the housing|
|Housing and Rating||extruded aluminium profile, IP 65 per DIN 40 050|
|Weight (IR sensor only)||1.54 lbs., (700 g)|
|CE Label||according to EU directives for electromagnetic compatibility (EMC)|
CO2 Gas Measurement Operation
The infrared radiation emitted from the gas stream is collimated onto the IR detector via the sensor’s lens. The acquired temperature reading is the average from the IR sensor’s cone of vision which penetrates up to 8 to 14 foot into the boiler/furnace. This based on an 8 to 12% CO2 gas concentration. The heavy duty protective cooling housing with protective sapphire window and air purge insures reliable operation in harsh environments.
- Garbage Incinerators
- Hazardous Waste boilers
- Fluidized Bed Boilers
- Utility Boilers
- Biomass Boilers
Located at the rear of the pyrometer, sight-through optics allow the operator to visually see into the boiler/furnace, enabling observation of any debris build up that may be lodged in the IR sensor’s sight tube, such as coal fly ash. It is important that the pyrometers’ field of view or cone of vision is kept unobstructed. The protective housing with flange and steel sight tube offers a ½ air purge inlet that is used to reliably maintain a clear sight path.
The PSC Metis Pyrometer offers a variety of analog and digital output signals for displaying, controlling and archiving of the measured process temperatures. The analog outputs are switchable from 0 to 20mA to 4 to 20 mA. There is a choice of 2 bi-directional digital communication interfaces, either RS232 or RS485 with a maximum baud rate of 19.2 k.
Protective Hardware Package
Assembly includes Water-Cooled Jacket KG10-00 for ambient temperature up to 200°C, removable sapphire sealed window, sight tube with strong air purge and welded flange.