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CONTENTS Title Page 1. Safety Information………………………….. 1 Environment Conditions…………………………………1 Maintenance & Cleaning………………………………...1 Safety symbols…………………………………………... 1 2. Description ……………….….………………2 3. Features……………………..…..…………… 2 4. Specifications………..……..………………..2 Output sound pressure levels………………………….. 2 Output frequency…………………………………………2 Reference conditions…………………………………….2 Influence of ambient conditions…………………………2 Total Harmonic Distortion(THD)………………………...
1. Safety Information Read the following safety information carefully before attempting to operate or service the meter. Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired. Environment Conditions § Altitude up to 6562ft. (2000 meters) § Relative humidity 90% max. § Operation Temperature 32º - 140ºF (0º to 40 ºC) Maintenance & Cleaning Repairs or servicing not covered in this manual should only be performed by qualified personnel.
3. Features Conforms to ANSI S1.40-1984 and IEC 60942-2003 Class 2. Calibration levels of 94dB and 114dB. Fits the 1-inch and 1/2-inch diameter microphones. 4. Specifications Output sound pressure levels: 94dB and 114dB re 20 uPa under reference conditions. Output frequency: 1000Hz +/- 2% Reference conditions: Temperature: 74ºF (23ºC) Relative humidity: 50% Atmospheric pressure: 1013hpa Influence of ambient conditions: Temperature coefficient: 0.005dB/ºC Humidity coefficient: 0.
The calibrator should not be operated when the green LED turns to red, which means that the battery voltage has fallen below acceptable range. Dimensions: 4.4"(L) x 2.4"(W) x 1.7"(H), 113mm(L) x 63mm(W) x 44mm (H) Weight: approx. .41lbs. (186.4g) (including battery) Operating conditions: 32 – 140ºF (0 – 40ºC), 10 – 90%RH, 650 –1080hpa Storage temperature & humidity: 14 – 122ºF (-10 – 50ºC), 0 – 70%RH Accessories: Instruction manual, carrying pouch, 9V battery, ½” microphone adapter.
5. Nomenclature And Functions 1 2 3 4 5 Power and low battery indicator LED. Power and output level select switch. Transducer assembly 1-inch cavity for microphone insertion. 1/2-inch microphone adapter. Battery cover.
6. Operating Preparation (1) Remove battery cover and install a 9V Battery in the battery compartment. (2) To quickly check the operation of the sound level calibrator: (a) Slide the power switch from OFF to the 94dB position and listen for the 1 kHz audible tone. A green LED indicates a good battery. A red LED indicates the battery is low and should be replaced. (b) Change the switch from 94dB to 114dB and listen for the 20dB increase in the level of the tone.
(3) If 94dB is selected on the calibrator, then choose a level range on the instrument under test to a range having 100dB as it’s upper limit. If 114dB is selected on the calibrator, choose a range with an upper limit of 120dB. The instrument may be set to FAST or SLOW response and C or A weighting. (4) Insert the microphone of the of the instrument being calibrated all the way into the cavity of the calibrator.
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