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CAL200

Precision Acoustic Calibrator

Manual

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Summary of Contents for CAL200

Page 1: ...CAL200 Precision Acoustic Calibrator Manual ...

Page 2: ......

Page 3: ...I200 1 Rev H A P P E N D I X Larson Davis CAL200 Manual ...

Page 4: ...ject to change without notice and should not be construed as a commitment or representation by PCB Piezotronics Inc This publication may contain inaccuracies or typographical errors PCB Piezotronics Inc will periodically update the material for inclusion in new editions Changes and improvements to the information described in this manual may be made at any time Recycling PCB Piezotronics Inc is an...

Page 5: ...cy of 1 kHz It has been designed for both field and laboratory use and the accuracy has been calibrated to a reference traceable to the National Institute of Standards and Technology The Larson Davis CAL200 Sound Level Calibrator has the following features Precision sound level calibrator Dual output levels 94 0 dB and 114 0 dB user selectable Output frequency 1 kHz Internal batteries for portable...

Page 6: ...1 2 Features CAL200 Technical Reference Manual ...

Page 7: ...ibrations Follow the steps below to install the battery Step 1 Slide the battery door on the lower section of the back panel up to remove it Step 2 Gently pull the battery connector clip sufficiently outside the interior to permit it to be snapped onto the battery terminals Step 3 Tuck the battery with the battery connector clip attached into the battery compartment Step 4 Slide the battery door b...

Page 8: ...3 98 dB for its level when set to 114 dB then set the Cal Level in the instrument to 113 86 dB and 1 kHz When the microphone and instrument are at a temperature other than near room temperature or static pressures not near sea level then corrections will need to be added for the ambient temperature and the prevailing static pressure Check the calibration data shipped from Larson Davis with the CAL...

Page 9: ... the calibrator Make sure it fits snugly Step 3 Insert the microphone fully into the adapter Make sure it fits snugly The preferred method for calibrating with the CAL200 is to mount the preamplifier in a fixed vertical position FIGURE 2 1 Vertical Positioning Step 4 With the microphone connected to the instrument being calibrated press the CAL200 s ON button With a fresh battery the calibrator wi...

Page 10: ...is too short to accomplish an adequate calibration When making a sequence of measurements a calibration check and an adjustment if necessary of the instrument should be made at the beginning At the end of the measurement sequence the calibration should be checked again The inaccuracy of the measurements will be at least as large as the difference between the level measured for the initial calibrat...

Page 11: ... An acoustical calibrator should be recalibrated at least annually by the instrument manufacturer or an acoustical test laboratory qualified to perform calibration American National Standards Institute Specifications for Acoustical Calibrators ANSI S1 40 2006 par 5 2 Larson Davis believes the frequency of recalibration depends on the number of calibrators being used and the number of instruments b...

Page 12: ...ng If all the measurement instruments are drifting in the same direction by an amount you consider significant the CAL200 should be recertified If several instruments and several calibrators are in use then the history of calibration adjustments would precisely pinpoint any problem pieces of equipment Furthermore it is probably satisfactory to recalibrate only one of the calibrators each year ...

Page 13: ... 1 General Requirements IEC 61326 1 2005 Electrical equipment for measure ment control and laboratory use EMC requirements Technical Specifications Measurement uncertainty and coverage factor information is shown on test reports that ship with the calibrator Calibration sound pressure level 94 0 dB and 114 0 dB 0 2 dB re 20 Pa 101 3 kPa 23 ºC and 50 RH 114 0 dB is the principal sound pressure leve...

Page 14: ...106 1 mm 4 18 in Width 63 4 mm 2 5 in Thickness 25 9 mm 1 02 in Weight 156 gm 5 5 oz Battery 9 V NEDA 1604A or IEC 6LR61 With sufficient battery voltage calibrator will run after releasing ON button for 1 to 1 5 minutes before automatic shutdown With insufficient battery voltage calibrator will not remain ON after release of button Battery Voltage Operating Range 6 7 Volts to 10 Volts Traceability...

Page 15: ...es According to IEC 61094 4 1995 1 2 WS2P WS2F and WS2D microphones no adaptor required 1 4 WS3P WS3F and WS3D microphones with ADP024 adaptor According to IEC 61094 1 2000 1 2 LS2P Other Microphones 3 8 with ADP031 adaptor 4180 Microphone The CAL200 level correction is 0 26 dB ...

Page 16: ...3URFHHGXUHV IRU 6RXQG DOLEUDWRUV PLVVLRQV 7HVW 6WDQGDUGV 635 HGLW QGXVWULDO VFLHQWLILF DQG PHGLFDO 60 UDGLR IUHTXHQF HTXLSPHQW OHFWURPDJQHWLF GLVWXUEDQFH FKDUDFWHULVWLFV LPLWV DQG PHWKRGV RI PHDVXUHPHQW ODVV URXS OHFWURVWDWLF GLVFKDUJH 6 LPPXQLW N9 FRQWDFW GLVFKDUJHV DQG N9 DLU GLVFKDUJHV 5DGLDWHG UDGLR IUHTXHQF HOHFWURPDJQHWLF ILHOG LPPXQLW 0 WR DW 9 P PPXQLW 7HVW 6WDQGDUGV 3RZHU IUHTXHQF PDJQHWL...

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