M310-HT Manual Appendix A: Calibration & Emissivity • 19
Appendix A: Calibration & Emissivity
Radiometric Method:
In this method, calibration is based on the energy radiated from the emitter surface at a desired
spectral band. This emitted radiation is compared with the primary blackbody calibration source
with emissivity of greater than 0.998, using a precision transfer standard. The advantage of this
technique is that the characteristic of emitter emissivity has already been calibrated into the
system. An apparent emissivity of greater than 0.995 can be achieved. Recalibration or field
calibration using this technique is more difficult and elaborate since highly precision primary
blackbody calibration sources and transfer standard are needed.
This blackbody was calibrated radiometrically.
Calibration Certificate
The certificate of calibration of your blackbody source has been included with the shipment.
This certificate contains valuable information including traceability to NIST. Please observe
recommended date of next calibration.
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