BL673 Blackbody Calibration Source (-20℃~125℃)
The BL673 is a portable blackbody calibration source utilizing a digital indicating temperature from -20℃ to 125℃. A precision platinum RTD temperature sensor is embedded in the blackbody emitter, providing high accuracy and repeatability.
The BL673 feature a large, temperature controlled blackbody target with a diameter 65mm, which offers a large field of view area for optical variations in infrared thermometers. The emissivity of the isothermal target is set at 0.995, and target temperature can be controlled in set-point increment of 0.01℃ from -20℃ to 125℃.
The BL673 is as easy to use as “point and shoot.” Simply set the desired blackbody temperature from the convenient front panel control buttons, wait a few minutes for equilibrium, and pint the gun at the target. The radiated energy from the blackbody is measured by your IR thermometer. Simply compare its readings to the display on the blackbody and record the difference.
FEATURE
Ideal for most of IR Guns!
Temperature range -20 to 125℃
65 mm aperture diameter end closed tube
Emissivity is better than 0.995
Fast Heat Up & Cool Down Times
0.15℃ high temperature stability
Built-in temperature correction function
Simple to Use
Rugged & Light weight
Nitrogen purge connection available
TYPICAL APPLICATION
Infrared temperature sensors
Infrared thermal imaging systems
Spectrographic analyzers
Spectral radiometers
Heat flux meter
SPECIFACTION
Temperature range:-20℃ to 125℃
Aperture diameter: 65 mm
Heated emitter shape: End closed tube
Emissivity: better than 0.995
Resolution: 0.01℃ (<100℃)；0.1℃ (>100℃)
Stability (10min): 0.1℃
Uniformity: 0.15℃
Display accuracy: 0.5℃
Cool down time: 30 minutes from ambient to -20℃
Heat up time: 20 minutes from ambient to 125℃
Control method: Digital PID controller with readout
Temperature sensor: Precision Platinum RTD
Power supply: 220VAC, 350VA (110VAC is option)
Interface: RS485
Calibration band: 8um-14um spectral band
Dimension: 300mm(H)x 200mm(W)x 280mm(D)
Net weight: Approx. 8.3 kg
SCOPE OF DELIVERY
BL673 Portable infrared calibration source
Power cord (need to confirm the power plug type in advance)
Protective carrying case
User manual
OPTIONAL ACCESSORIES
Accredited calibration certificate (P/N: CAL-673)
ORDERING MODEL NUMBER
BL673-110V
BL673-220V
REFERENCE
IEC/TS 62492-1-2008：Industrial process control devices - Radiation thermometers. Part 1: Technical data for radiation thermometers
ASTM E2847-2013: Standard practice for calibration and accuracy verification of wideband infrared thermometers
ASTM E1256-2011a: Standard Test Methods for radiation thermometers (Single waveband type)
OIML D24 (1996):Total radiation pyrometers
JJG 856-2015: Verification regulation of radiation thermometers
Calibration Methods
There are two distinctly different methods of calibrations, each with its own application advantages.
These methods are described as follows:
Radiometric non-contact 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 standard. The advantage of this technique is that the characteristic of emitter emissivity has already been calibrated into the system. An effective emission of greater than +0.99 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.
Thermometric contact method: In this method, the surface temperature of emitting surface is precisely measured and controlled. The sensor is an ultra-precision platinum RTD that closely monitors the temperature of the emitting surface. This method is widely used in aerospace industries, since it provides an easy method of periodically verifying calibration. A deep hole with a 0.165 inch (4.2mm) diameter is provided for customer insertion of calibration RTD.