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Sound Level Calibration 

 

 

Calibrator will not operate when the green LED 
turns to red, which means that battery voltage 
has fallen bellow the acceptable range.

   

Dimensions (LxWxH):

   

4.4 x 2.4 x 1.7inch (113 x 63 x 44mm) 

Weight:

 approx. 170g(inc luding battery)

 

Ambient conditions: 

0° – 40°C (32° – 140°F), 10 – 90%RH, 
650  –1080hpa 

Storage temperature & humidity: 

-10° – 50°C (14° – 122°F), 0 – 70%RH  

Accessories: 

Instruction manual, carrying case, 9V battery, 
1/2”microphone adapter   

 

www.

.com

[email protected]

1.800.561.8187

Summary of Contents for CAL73

Page 1: ...tput frequency 2 Reference conditions 2 Influence of ambient conditions 2 Total Harmonic Distortion THD 2 Accuracy of sound pressure level 2 Power 2 Battery life 2 Battery test 3 Dimensions 3 Weight 3 Ambient conditions 3 Storage temperature humidity 3 Accessories 3 5 Nomenclature And Function 4 6 Operating Preparation 5 7 Calibration Procedure 5 www com information itm com 1 800 561 8187 ...

Page 2: ...ed in this manual should only be performed by qualified personnel Periodically wipe the case with a dry cloth Do not use abrasives or solvents on this instrument Safety symbols Comply with EMC When servicing use only specified replacement parts 2 Description Sound level calibrator is used to calibrate sound level meters and other sound measurement equipment You can calibrate 1 inch diameter microp...

Page 3: ...ncy 1000Hz 2 Reference conditions Temperature 23 C 74 F Relative humidity 50 Atmospheric pressure 1013hpa Influence of ambient conditions Temperature coefficient 0 005dB Humidity coefficient 0 005dB RH Total Harmonic Distortion THD 3 Accuracy of sound pressure level 0 5dB Power one 9V battery 006P or IEC 6F22 or NEDA 1604 Battery life approx 40 hours Alkaline Battery Battery test Internal circuitr...

Page 4: ...e acceptable range Dimensions LxWxH 4 4 x 2 4 x 1 7inch 113 x 63 x 44mm Weight approx 170g inc luding battery Ambient conditions 0 40 C 32 140 F 10 90 RH 650 1080hpa Storage temperature humidity 10 50 C 14 122 F 0 70 RH Accessories Instruction manual carrying case 9V battery 1 2 microphone adapter www com information itm com 1 800 561 8187 ...

Page 5: ...cate LED Power and output level select switch ƒ Transducer assembly 1 inch cavity for microphone insertion 1 2 inch microphone adapter Battery cover 94dB 114dB ANSI S1 40 1984 IEC 60942 Class 2 OFF NEDA 1604 9V BAT TERY 6F22 006P 1 2 3 4 5 www com information itm com 1 800 561 8187 ...

Page 6: ...20 You can calibrate in noisy environments and check linearity 7 Calibration Procedure 1 The cavity of the calibrator will accommodate 1 inch microphone 2 When the calibration is performed to an instrument with 1 2 inch microphone the 1 2 inch microphone adaptor will have to be inserted by gently pushing it into the cavity till the end 3 Place the sound level calibrator over the microphone of the ...

Page 7: ...rument may be set to FAST or SLOW response and C or A weighting 5 Read the level on the instrument under test and adjust the sensitivity control for the correct indication of the sound level calibrator level selected in step 6 When the calibrator is not being used please switch OFF the power to save the battery CAUTION Ambient sources of noise or vibration can cause a false calibration indication ...

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