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Thermal Power Sensors

Thermal sensors have a series of bimetallic junctions called a thermopile. Radial or axial heat flow through the sensor creates a voltage proportional to the power absorbed as it flows through the thermopile. The reading is not dependent on the ambient temperature since only the temperature difference is measured and not the absolute temperature. The thermopile elements are so arranged that the reading is almost independent of beam size and position. Generally, Ophir specifies ±2% or better uniformity of reading over the surface.
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8 µW -3W Min Power High Sensitivity Thermopile Sensors
6 Products
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8 µW -3W Min Power High Sensitivity Thermopile Sensors 7Z02621 Thermal Laser Power Sensor, BB Type, 10 µW to 3 W, Ø9.5 mm Aperture, 0.19-20 µm
$1,291
3A Broadband 10µW to 3W High Sensitivity Ø9.5mm Thermal Sensor 7Z02621C Thermal Laser Power Sensor, BB Type, 10 µW to 3 W, Ø9.5 mm Aperture, 0.19-20 µm with 10m cable
$1,534
3A-P Short Pulse 15µW to 3W High Sensitivity Ø12mm Thermal Sensor 7Z02622 Thermal Laser Power Sensor, P Type, 15 µW to 3 W, Ø12 mm Aperture, 0.15-8 µm
$1,305
3A-FS Fused Silica Window 8µW to 3W High Sensitivity Ø9.5mm Thermal Sensor 7Z02628 Thermal Laser Power Sensor, BB Type, 8 µW to 3 W, Ø9.5 mm, 0.19-20 µm
$1,624
3A-P-FS-12 Fused Silica Window 15µW to 3W High Sensitivity Ø12mm Thermal Sensor 7Z02687 Thermal Laser Power Sensor, P Type, 15 µW to 3 W, Ø12 mm, 0.22-2.1 µm
$1,494
3A-PF-12 High Peak Power 15µW to 3W High Sensitivity Ø12mm Thermal Sensor 7Z02720 Thermal Laser Power Sensor, PF Type, 15 µW to 3 W, Ø12 mm, 0.15-20 µm
$1,283
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8-100 W Max Power Convection Cooled Thermopile Sensors
13 Products
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8-100 W Max Power Convection Cooled Thermopile Sensors 7Z02624 Thermal Laser Power Sensor, P Type, 2 mW to 12 W, Ø16 mm, 0.15-8 µm
$1,812
12A Broadband 12W Air-Cooled Ø16mm Thermal Sensor 7Z02638 Thermal Laser Power Sensor, BB Type, 2 mW to 12 W, Ø16 mm, 0.19-20 µm
$1,826
12A Broadband 12W Air-Cooled Ø16mm Thermal Sensor 7Z02638B Thermal Laser Power Sensor, BB Type, 2 mW to 12 W, Ø16 mm, 0.19-20 µm with 5m cable
$1,938
10A-P Short Pulse 10W Air-Cooled Ø16mm Thermal Sensor 7Z02649 Thermal Laser Power Sensor, P Type, 40 mW to 10 W, Ø16 mm, 0.15-8 µm
$1,214
L30A-EX-10MM Excimer Laser 8W Air-Cooled Ø26mm Thermal Sensor 7Z02686 Thermal Laser Power Sensor, EX Type, 80 mW to 30 W, Ø26 mm, 150-700 nm, 10.6 µm
$1,057
30A-P-17 Short Pulse 30W Air-Cooled Ø17mm Thermal Sensor 7Z02693 Thermal Laser Power Sensor, P Type, 60 mW to 30 W, Ø17 mm, 0.15-8 µm
$1,283
30A-N-18 YAG Laser 30W Air-Cooled Ø17.5mm Thermal Sensor 7Z02695 Thermal Laser Power Sensor, N Type, 60 mW to 30 W, Ø17.5 mm, 532/1064 nm
$999
30(150)A-HE-17 High Pulse Energy 30/150W Air-Cooled Ø17mm Thermal Sensor 7Z02722 Thermal Laser Power Sensor, HE Type, 50 mW to 30/150 W, Ø17 mm, 190-625/1064/2100/2940 nm
$1,711
30(150)A-SV-17 High Damage Threshold 30/150W Air-Cooled Ø17mm Thermal Sensor 7Z02724 Thermal Laser Power Sensor, SV Type, 100 mW to 30/150 W, Ø17 mm, 0.19-11 µm
$2,000
30(150)A-HE-DIF-17 High Pulse Energy 30/150W Air-Cooled Ø17mm Thermal Sensor with Diffuser 7Z02729 Thermal Laser Power Sensor, HE Type, Diffuser, 50 mW to 30/150 W, Ø17 mm, 190-625/900-3000 nm
$1,809
L50(150)A-PF-35 High Peak Power 50/150W Air-Cooled Ø35mm Thermal Sensor 7Z02737 Thermal Laser Power Sensor, PF Type, 100 mW to 50/150 W, Ø35 mm, 0.15-20 µm
$1,567
50A-PF-DIF-18 High Peak Power 50W Air-Cooled Ø17.5mm Thermal Sensor with Diffuser 7Z02738 Thermal Laser Power Sensor, PF Type, 140 mW to 50 W, Ø17.5 mm, 240-2200 nm
$1,812
15(50)A-PF-DIF-18 High Peak Power 15/50W Air-Cooled Ø17.5mm Thermal Sensor with Diffuser 7Z02740 Thermal Laser Power Sensor, PF Type, Diffuser, 140 mW to 15/50 W, Ø17.5 mm, 240-2200 nm
$1,932
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50-1100 W Max Power Fan Cooled Thermopile Sensors
3 Products
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50-1100 W Max Power Fan Cooled Thermopile Sensors 7Z02728 Thermal Laser Power Sensor, BB Type, 150 mW to 250 W, Ø35 mm, 0.19-20 µm
$1,749
FL400A-BB-50 Broadband 400W Fan-Cooled Ø50mm Thermal Sensor 7Z02734 Thermal Laser Power Sensor, BB Type, 300 mW to 500 W, Ø50 mm, 0.19-20 µm
$1,964
FL400A-BB-50 Broadband 400W Fan-Cooled Ø50mm Thermal Sensor 7Z02734B Thermal Laser Power Sensor, BB Type, 300 mW to 500 W, Ø50 mm, 0.19-20 µm with 5m cable
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