| Measurement Type |
Water cooled beam absorber chamber with deflecting cone. Separate power measuring unit monitoring input and output cooling water flow and temperature |
| Spectral Range |
0.9μm –1.1μm (a) |
| Aperture |
Ø200mm |
| Power Range for Calibrated Reading |
10kW – 120kW |
| Power Noise Level |
±20W with stable water temperature |
| Backscattered Power |
Less than 1% |
| Maximum Average Power Density |
Designed for near Gaussian beam. The 1/e2 beam diameter should have a divergence of 0 to 6 degrees and should be Ø100mm in diameter at the reflecting cone (see sketch above where the beam may also be collimated and not divergent as long as beam diameter requirement is met). |
Beam Centering Requirements
IMPROPERLY CENTERED BEAM CAN
CAUSE DAMAGE TO SENSOR |
Beam to be centered on deflecting cone ±5mm and parallel ±2degrees |
| Response Time 0-95% typ |
40s at flow rate 60 liter/min and 60s at flow rate 20 liter/min |
| Calibration Uncertainty |
±1.9% |
| Power Accuracy |
±5% (a) |
| Linearity with Power |
±2% |
| Cooling Requirements |
Water flow rate, 60 liters/min at max power. Inlet temperature 15-20degC.
Inlet water temperature rate of change <0.3degC/min at full power, proportionately less at lower power (b, c) |
| Water Pressure Drop across Beam Absorber |
0.4MPa at 60 liter/min flow rate |
| Water Connections |
Up to 4 meters in each direction of 1” OD 13/16” ID flexible nylon tubing |
| Outputs |
1. Cable terminated in DB9 plug with RS232 ASCII output reading power, flow rate and temperature on PC (using WaterFlowMeter PC App). Cable lengths 10 meters (recommended for access to full data).
2. Cable terminated in DB15 Ophir smart plug reading power. |
| Optional Scatter Shield Accessory (c) |
NA |
| Dimensions |
See drawing below |
| Weight |
Beam Absorber 50kg. Power measuring unit 10kg |
| Part number |
7Z02691 |
| Notes: (a) |
Calibrated for 1.07 μm |
| Notes: (b) |
a safety interlock flow switch on the return water line (after beam dump) to immediately shut down the laser if flow rate drops. |
| Notes: (c) |
For solutions for prolonged usage with untreated water (tap water, non DI water), please contact Ophir |
