Broadband 250 W Water-Cooled Thermopile Sensor with Ø50 mm Aperture
Broadband 250 W Water-Cooled Thermopile Sensor with Ø50 mm Aperture
The L250W-BB-50 thermopile sensor is a water cooled low profile laser power and energy thermal sensor with a 50 mm aperture. It can measure optical power from 1 to 250 W and energy from 120 mJ to 200 J. It has the spectrally flat broadband BB coating and covers the spectral range from 0.19 to 11 µm. .
- Broadband 0.19 to 11 µm absorber
- Water-cooled for 1 to 250 W average power measurement
- 120 mJ to 200 J energy measurement See All Features
Features
Choosing a Thermal Sensor
In this short “Basics” video we review the use – and selection - of thermal sensors for measuring low, medium and high laser powers.
Sensors for Measuring Laser Power
In this short "Basics" video we review in general how one goes about measuring laser beam power, so that you'll have a clear understanding of what the different sensor types are, and when to use each type.
Thermal Power Sensor Accuracy
Ophir former CTO Dr. Ephraim Greenfield discusses the various factors that contribute to uncertainties in measurement when using Ophir laser power and energy meters.
Water Cooled Sensors: Things to Look Out For
Water cooled sensors are commonly used when measuring laser beams of more than a few hundred watts. In this video, you will learn about some critical issues you need to consider when using water cooling, such as water temperature, water flow rate, and corrosion prevention.
Thermal Sensor Calibration
As the spectral sensitivity of the absorber used for the power and energy measurement is not fully linear, Ophir sensors get a high precision calibration by default with more than one wavelength.
Each thermal sensor is calibrated independently of a particular Ophir power meter with its calibration information contained in the DB15 plug. When the sensor is connected to the meter, the meter reads and interprets this information to display a calibrated reading. Each power meter is calibrated independently and has the same sensitivity as an other meter within about 2 tenths of a percent.
Unless otherwise indicated, Ophir sensors and meters should be recalibrated within 18 months after initial purchase, and then once a year after that.
Accessories
Metric Water Fitting
Thermal Sensor Cables
Sensor Connector to BNC Adapter
Resources
Data Sheets
High Power Water Cooled Thermal Sensors 0.5W to 300W Datasheet (160.1 kB, PDF)
Catalogs
Power Sensors Catalog(11.2 MB, PDF) Laser Power & Energy Measurement and Laser Beam Analysis Catalog(27.5 MB, PDF)
Drawings & CAD
L250W and L300W-LP2-50 Drawing(188.2 kB, PDF)
Technical Notes
Absorption, Angle Dependence and Damage Graphs for Thermal Sensors(216.1 kB, PDF) How to Use Water Cooled Ophir Sensors 5 Situations Where Laser Performance Measurement is Necessary Effect of Ambient Conditions on Laser Measurements How do I know what range, or scale, to set my power/energy meter to? Setting Your Thermal Sensor up in Energy Mode for the Best Accuracy and Repeatability How Much of the Power Sensor Aperture Can My Laser Fill Up? How to Properly Select a Laser Power or Energy Sensor Common Reasons for Thermal Sensor Damage or Out of Tolerance Conditions
