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Calibration Certificate <br />Part Number: 714A0401 <br />Description: Linear Microphone BM III, 2Hz-250Hz <br />Date: Oct. 11, 2001 <br />Unit S/N: BH6077 <br />TEST REFERENCES* Model Serial No. <br />Stanford Specvum Analyzer <br />Good Will Inst. Frequency Counter <br />Fluke Multimeter <br />VOD Cable Simulation Test Jig <br />Bruel &Kjaer Accelerometer <br />Bruel &Kjaer Charge Amplifier <br />Bruel &Kjaer Mic Power Supply <br />Bruel &Kjaer Microphone Preamplifier <br />Bruel &Kjaer Microphone Element <br />SR760 41036 <br />GUC-2010G 5110825 <br />87111 71990510 <br />717J0201 n/a <br />4370 1425906 <br />2635 1423229 <br />2804 1904864 <br />2669 1936412 <br />4193 1863904 <br />INSTANTEL INC. hereby certifies that this unit has been calibrated and that <br />the results are consistent with the specifications published regarding this <br />instrument. The SENSORCHECKTM feature of the unit is sufficiently <br />reliable to indicate proper operation, although it is recommended that this <br />unit be sent to INSTANTEL or an authorized service centre for regular <br />calibration. <br />AUTHORIZED BY: :' ~u?_ <br />*References are vaceable to NRC, NIST or equivalent <br /> <br />Inc. 1999 ~~ ~~ ~~ ~~ ~~ 7190-26Z-Rfr 2 <br />