Gentec-EO UP and XLP12 - Manual (Page 36)

Version 5.0
Ultra Series UP Instruction Manual Gentec Electro-Optics Inc. All rights reserved
32
Measured power[W] = (output voltage[V] - zero level voltage[V]) / calibration sensitivity[V/W]
= 1000 x (Vout[mV] - Vzero level[mV]) / calibration sensitivity[mV/W]
2.3 SAFETY OPERATION NOTES
Diffusive surfaces
When using the UP with a coating H, W, and VR be aware of the diffused back reflection:
-
H and W: ~ 5-15%
- VR: ~ 40-45%
As on any diffusive surface, the light on the sensor coating is scattered more or less
uniformly as a Lambertian diffuser. It is recommended to use the head with a black
protective sleeve. This will limit wide-angled diffused reflections.
Detector temperature while in operation
During usage, detectors can become hot enough to cause burns.
3 DAMAGE TO THE OPTICAL ABSORBER MATERIAL
Damage to the optical absorber material is usually caused by exceeding the manufacturer's
specifications, such as:
- Incident Average Power Density
- Incident Pulse Energy Density
Refer to the specifications pages for the Ultra Series UP power head specifications. Damage may
also be caused if the absorber surface is contaminated. A slight discoloration of the coating does
not affect the calibration.
In any case, the beam’s incident area should not be less than 10% of the detector’s aperture.
Please contact Gentec-EO to make measurements with such smaller beams.
In the event of significant damage to the coating, the Ultra Series UP sensors can be recoated.
Contact your local Gentec-EO representative for information on repair and recalibration. See p. ii
Contacting Gentec Electro-Optics Inc.