00mm and 200mm Calorimeters Setup and Operating Procedures PN11434C
Thank you for choosing a Scientech large aperture calorimeter. Scientech, an ISO 9001 registered company, and our employees are pleased to provide you with a product designed for years of reliable service. Please read this manual completely before using your calorimeter. This information will enable you to fully utilize the equipment and should be located nearby for reference. The calorimeter is intended to be used only in the manner outlined in this manual.
LARGE APERTURE CALORIMETER SPECIFICATIONS: Model Type of Absorber Aperture Diameter Minimum Beam Diameter Spectral Response Maximum Average Power Minimum Average Power Noise Level Maximum Power Density Maximum Peak Power Density Maximum Single Pulse Energy Maximum Energy Density Precision Accuracy Response Time Dimensions DxL - inches/cm Weight - pounds/kgs Indicator Compatibility * This is a segmented absorber Note 1: 380401 Note 2: 384UV5, 388UV5 Note 3: 380801 Note 4: 380401 Note 5: 384UV5, 388UV5 Note 6
UNPACKING AND SET UP: The calorimeter and accessories are shipped in custom packing materials. All packing materials should be saved for future damage free shipments. A ¾” diameter mounting post is included. Screw the post into the mounting hole in the body of the calorimeter. Mount the post to your optical bench or working surface. If you are using a Scientech indicator, connect the calorimeter to the interface module and the interface module to the indicator.
Operation of Large Aperture Calorimeters with an Analog Chart Recorder: Calorimeter Response: The response of a calorimeter to a single pulse input as displayed by a chart recorder appears below.
Initial Voltage Interpolation: A method used to eliminate the tedious numerical integration task is to project the thermal decay envelope on to the voltage axis, determine the 1/e decay time constant T, and estimate the total energy value (E): E = (Vo/S) x T The change from thermal absorption to thermal transport phenomena near the peak causes difficulty in accurately projecting the envelope on to the voltage axis introducing an error, dVo.
F. Record the voltage reading of the DVM (Vc). G. Calculate the calorimeter’s output sensitivity (S) as follows: S = Vc/W where: S = calorimeter’s output sensitivity Vc = voltage output from the calorimeter in mV W = desired laser power output. The measured sensitivity should be ± 3 % of the calorimeters original sensitivity value. FACTORY RECALIBRATION: Scientech recommends that a complete calibration be performed annually to verify system accuracy.
DISPOSAL OF ELECTRICAL AND ELECTRONIC EQUIPMENT: Scientech, Inc. recommends the following for disposal of electrical and electronic equipment: 1. The best option is to reuse the equipment in its entirety. 2. Where the equipment can not be reused in its entirety, priority should be given to reuse of its subassemblies and components. 3. Where reuse is not appropriate, electrical and electronic equipment, including batteries, should be recycled according to local ordinances.
