Laserfiche WebLink
Calibration Certificate <br />Certificate Number 2017004789 <br />Customer. <br />LSA Associates Inc <br />20 Executive Park <br />Irvine, CA 92614, United States <br />Model Number <br />PRM831 <br />Procedure Number <br />Serial Number <br />017139 <br />Technician <br />Test Results <br />Pass <br />Calibration Date <br />Initial Condition <br />AS RECEIVED same as shipped <br />Calibration Due <br />Temperature <br />Description <br />Larson Davis 1/2" Preamplifier for Model 831 <br />Humidity <br />Type 1 <br />Static Pressure <br />D0001.8383 <br />Ron Harris <br />9 May 2017 <br />9 May 2018 <br />23.4 °C ± 0.01 °C <br />50.5 %RH ± 0.5 %RH <br />85.94 kPa ± 0.03 kPa <br />Evaluation Method Tested electrically using a 12.0 pF capacitor to simulate microphone capacitance. <br />Data reported in dB re 20 NPa assuming a microphone sensitivity of 50.0 mV/Pa. <br />Compliance Standards Compliant to Manufacturer Specifications <br />Issuing lab certifies that the instrument described above meets or exceeds all specifications as stated in the referenced procedure <br />(unless otherwise noted). It has been calibrated using measurement standards traceable to the SI through the National Institute of <br />Standards and Technology (NIST), or other national measurement institutes, and meets the requirements of ISO/IEC 17025:2005. <br />Test points marked with a t in the uncertainties column do not fall within this laboratory's scope of accreditation. <br />The quality system is registered to ISO 9001:2008. <br />This calibration is a direct comparison of the unit under test to the listed reference standards and did not involve any sampling plans to <br />complete. No allowance has been made for the instability of the test device due to use, time, etc. Such allowances would be made by <br />the customer as needed. <br />The uncertainties were computed in accordance with the ISO Guide to the Expression of Uncertainty in Measurement (GUM). A <br />coverage factor of approximately 2 sigma (k=2) has been applied to the standard uncertainty to express the expanded uncertainty at <br />approximately 95% confidence level. <br />This report may not be reproduced, except in full, unless permission for the publication of an approved abstract is obtained in writing <br />from the organization issuing this report. <br />Standards Used <br />Description <br />Cal Date <br />Cal Due <br />Cal Standard <br />Sound Level Meter / Real Time Analyzer <br />03/08/2017 <br />03/08/2018 <br />003003 <br />Hart Scientific 2626-S Humidity/Temperature Sensor <br />06/17/2016 <br />06/17/2017 <br />006946 <br />Agilent 34401A DMM <br />06/07/2016 <br />06/07/2017 <br />007165 <br />SRS DS360 Ultra Low Distortion Generator <br />10/14/2016 <br />10/14/2017 <br />007167 <br />Larson Davis, a division of PCB Piezotronics, Inc <br />1681 West 820 North <br />Provo, UT 84601, United States <br />716-684-0001 <br />%��� n�J�, <br />-E!!!j MRS <br />ACCREDITED <br />Cert.#3622.01 <br />®LARSONDAVIS <br />A PCB PIEZOTRONICS DIV. <br />5/9/2017 9:34:34AM Page 1 of 5 D0001.8412 Rev A <br />