Hello, the equipment came with a certificated paper of conformity or similar? Thanks

My unit did not include any form of certification. Hope this helps.

I am not interested in a Cert of conformity, does the unit come with a calibration certificate?

Hi, the unit doesn't come with calibration certificate, we can do the calibration certificate if you need but with extra cost. Please send email to us if you need to do the calibration certificate, we will quote you the price.

Hi at what distance from which point of the device should SPL be measured?

As noted, the level produced depends the VOLUME of the calibrator CHAMBER, hence how well the microphone fits into it. There is a small "stop" at the base of each microphone adapter. With just the microphone adapter in place and no microphone, it's very soft even close to your ear. 1. Insert the microphone to the point that it stops 2. Turn on the calibrator to the required level, 94 dB is the more common 3. Set the meter to "A" weighting 3. Adjust your meter as appropriate 4. Repeat for the second level and with both "A" and "C" weighting if the meter has both. Make notes of any differences for future reference.

Manufacturer	Gain Express Holdings Ltd
Part Number	ND-9
Item Weight	12.8 ounces
Product Dimensions	4 x 7 x 2 inches
Item model number	ND-9
Batteries	2 AAA batteries required. (included)
Is Discontinued By Manufacturer	No
Color	Analog Sound Calibrator
Material	ABS
Item Package Quantity	1
Number Of Pieces	1
Batteries Included?	Yes
Batteries Required?	No
Battery Cell Type	Lithium Ion
Description Pile	9V Battery

Sound Level Calibrator Decibel Meter Sound Level Reader Sonometro Decibel Meter Calibrator 94db & 114db Output Levels For 1 Inch And 1/2 Inch Mic

Description

Specifications

Common Questions